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EP1848922B1 - Spotlight with a variable light-emitting characteristic - Google Patents

Spotlight with a variable light-emitting characteristic Download PDF

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Publication number
EP1848922B1
EP1848922B1 EP06706741A EP06706741A EP1848922B1 EP 1848922 B1 EP1848922 B1 EP 1848922B1 EP 06706741 A EP06706741 A EP 06706741A EP 06706741 A EP06706741 A EP 06706741A EP 1848922 B1 EP1848922 B1 EP 1848922B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light
holder
light source
head
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
Application number
EP06706741A
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German (de)
French (fr)
Other versions
EP1848922A1 (en
Inventor
Günther SEJKORA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1848922A1 publication Critical patent/EP1848922A1/en
Application granted granted Critical
Publication of EP1848922B1 publication Critical patent/EP1848922B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source

Definitions

  • the present invention relates to a spotlight according to the preamble of claim 1, which has a lamp holder for a light source and a light source at least partially surrounding the reflector for bundling the light emitted from the light source, wherein for changing the Lichtabstrahl characterizing the light, the distance between the reflector and the lamp holder for the light source in the light emission direction is changeable. Furthermore, the present invention relates to a so-called varioreflector for bundling the light emitted by a light source.
  • varioreflectors are reflectors in which the bundle width of the light emitted by a light source can be changed by mechanical adjustment. It is known in this context that the lamp is moved axially - ie in the light emission direction - relative to the reflector. By thus obtained displacement of the light source relative to the focal point of the reflector, the light emitted from the light source via the reflector light can be changed from an approximately parallel beam into a cone of light with a relatively wide opening angle. Of course, this effect can also be achieved by not adjusting the light source but instead the reflector with respect to the light source.
  • a spotlight in which such a focus adjustment of the light source with respect to a reflector is possible, is bpsw. from the EP 0 521 267 A1 known.
  • the socket carrier for the light source can be moved in a simple manner in the axial direction, so that the light emission characteristic of the radiator is influenced in the desired manner.
  • a luminaire in which the reflector is divided into two areas.
  • a head portion of the reflector is in this case fixedly arranged with respect to the light source and can be moved together with the light source relative to the further reflector part.
  • WO 01/36871 A1 From the WO 01/36871 A1 is a spotlight with a socket for a light source and two reflectors known.
  • the socket can be adjusted against the two reflectors; Also, the arrangement of the two reflectors to each other can be changed.
  • the present invention is accordingly an object of the invention to provide a spotlight with an adjustable Lichtabstrahl characterizing in which the above-mentioned disadvantages are avoided and which in particular in the largest possible adjustment range has a homogeneous Lichtabstrahl characterizing in the form of a single beam.
  • the core idea of the present invention is accordingly to subdivide the reflector surrounding the light source into two areas, namely a head reflector surrounding the light source and a main reflector adjoining the head reflector in the light emission direction and forming the light exit opening, whereby the light source can be adjusted relative to the two reflector parts on the other hand, the arrangement of the two reflector parts to one another in the light emission direction is variable and wherein an adjustment of the socket is coupled with a simultaneous adjustment of one of the two reflector parts.
  • a spotlight which has a socket for a light source and a socket at least partially surrounding and a light exit opening forming reflector for bundling the light emitted from the light source, wherein the arrangement of the light source with respect to the reflector in light emission is changeable.
  • the reflector is subdivided into a head reflector surrounding the light source as well as a main reflector adjoining the head reflector in the light emission direction and forming the light emission opening, on the one hand the socket opposite the two reflector parts adjustable and on the other hand, the arrangement of the two reflector parts seen each other in the light emitting direction is changeable.
  • the inventive subdivision of the reflector and provided in the axial direction adjustability of the two reflector parts to each other opens the possibility to avoid the disadvantage of fanning the beam. Namely, if the light source in the luminaire according to the invention relative to the focus of the main reflector shifted too much, this effect can be compensated by a corresponding adjustment of the arrangement of the head reflector again. Ultimately, the light rays are in this way in turn combined into a single beam.
  • the effect is accordingly based on the fact that of the three luminous components light source or socket for the light source, head reflector and main reflector at least two of them - in the light emission direction - are adjustable, relative to each other and with respect to the third element.
  • This does not necessarily have to be the light source or the socket and the head reflector, it would of course also conceivable that the light source is fixed in a certain position and instead a corresponding adjustment of the two reflector parts is performed.
  • the main reflector is fixed and the socket for the light source and the head reflector are designed to be adjustable, since in this case the outer dimensions of the lamp remain unchanged regardless of the set Lichtabstrahl characterizing.
  • the invention provides that the movements of both adjustable elements are coupled.
  • an adjusting device is provided, at the same time both adjustable elements of the luminaire are displaced in a suitable manner, so that in principle the desired bundling of the light beams takes place.
  • the adjusting device may for example have a rotatable adjusting element, which is coupled for example with the socket and the movable reflector part in a suitable manner.
  • This Adjustment can be formed for example by an eccentric or by a rotatable link ring. It is essential that the two adjustable elements are not fixed to each other, as in the lamp according to the DE 40 16 531 A1 the case is. Instead, even in the coupled movement according to the preferred embodiment, both elements perform different movements, ie, they are also displaced relative to each other.
  • Fig. 1 only those elements of the spotlight generally designated by the reference numeral 40 are shown, which are necessary for achieving the inventive effect of the adaptation of the light emission characteristic.
  • the spotlight 40 has a held in a socket 13 light source 14, which is surrounded by a cup-shaped reflector 41 having a light exit opening 42 on its underside.
  • the Lichtabstrahl characterizing the light 40 is given primarily by the shape of the reflector 41 and by the arrangement of the light source 14 within the reflector 41.
  • varioreflectors was provided to adjust the light emission characteristic by changing the position of the light source within the reflector. By shifting the light source relative to the focal point of the reflector, the light beams were fanned out so that the width of the emitted beam could be adjusted at least to a certain extent.
  • This displaceability of the light source 14 relative to the reflector 41 is also provided in the spotlight 40 according to the invention, which is schematically represented by the first double arrow I.
  • the reflector 41 is subdivided into two parts, namely a head reflector 5 and in the light emission direction at the Head reflector 5 subsequent main reflector 11.
  • Another feature of the lamp 40 according to the invention is that the arrangement of the head reflector 5 to the main reflector 11 is also changeable, which is illustrated by the second double arrow II.
  • the light source 14 is moved relative to the main reflector 11, it can be ensured by a suitable adjustment of the position of the head reflector 5, that even in the event that the light source 14 is significantly shifted from the focal point of the annular main reflector 11, despite all single beam is emitted through the light exit opening 42.
  • the range over which a change in the light emission characteristic of the emitter lamp 40 according to the invention is made possible is thereby significantly greater than in previously known emitters.
  • the arrangement of the head reflector 5 with respect to the light source 14 and the main reflector 11 must always be done in a certain way in order to achieve the desired bundling of the light beams.
  • the light source 14 and the socket 13 and the head reflector 5 are not freely adjustable, but instead that a coupling of the displacement paths of the light source 14 and the head reflector 5 is present.
  • a first embodiment of a suitable adjustment, with the help of an adjustment of the socket 13 with a simultaneous adjustment of the head reflector 5 is coupled, will be based on the Fig. 2a to 2c be explained.
  • two guide discs 1a and 1b with the (not shown) luminaire housing of the emitter lamp 40 according to the invention are firmly connected.
  • a cage 2 which is guided by means of a longitudinal axis 3a and a hollow shaft 3b in two guide bores 4a and 4b provided in the guide disks 1a and 1b.
  • hollow axis 3b of the head reflector 5 is fixed, which is configured rotationally symmetrical.
  • an eccentric disc 6 which is freely rotatable about an axis 7, which is at right angles to the Lichtabstrahlraum or to the axis 3a and the hollow shaft 3b and is connected to the lamp housing by an angular range of up to 180 ° ,
  • Fig. 2a to 2c is shown by changing the eccentric disc 6 of the reference numerals 10a to 10c shown distance of the tip of acting as a guide part first stylus 9 from the rotation axis 7 of the eccentric disc 6 and, accordingly, the position of the cage 2 as well as over the hollow axis 3b rigidly connected to the cage 2 Kopfreflektors 5 relative to the fixed to the lamp housing main reflector 11.
  • the eccentric disk 6 clockwise thus the head reflector 5 can be pushed in the light emitting direction and thus in the main reflector 11.
  • the upper edge 11a of the main reflector 11 is dimensioned such that in principle there is an overlap between the two reflector parts 5, 11 in order to avoid undesired lateral light emission.
  • a further axially displaceable axis 12 at the end of the lamp holder 13 is mounted with the lamp 14.
  • this axis 12 is another stylus 15, which is pressed by means of a second spring 16 which abuts between a shoulder surface of the hollow axis 3b and a shoulder surface of the axis 12, against the underside of the eccentric disc 6, which a second trajectory 17b forms.
  • the eccentric 6 Upon rotation of the eccentric 6 so that not only the position of the head reflector 5 but also the position of the light source 14 is changed.
  • the two trajectories 17a and 17b of the eccentric disc 6 so that the positions of the head reflector 5 and the lamp 14 with respect to the main reflector 11 as desired - but matched to each other - be changed. It is important that the arrangement of lamp 14 and head reflector 5 to each other changes. Accordingly, the trajectories will be chosen such that upon an adjustment of the light source 14, a suitable adaptation of the position of the head reflector 5 automatically takes place, so that a uniform beam is emitted.
  • FIG. 3a shows the adjusting device in the lateral cross section
  • Fig. 3b the adjusting device in plan view shows
  • Fig. 3c again shows the side view of a rotary or sliding ring, which is used in this second embodiment of the adjustment.
  • two guide disks 20a and 20b are fixedly connected to the luminaire housing of the luminaire 40 according to the invention.
  • Both guide discs 20a and 20b are further connected by a cylindrical guide body 21, which is arranged axially to the light emission direction of the radiator and has two recesses 22a and 22b parallel to its axis.
  • two slides 23 and 24 are arranged, which can slide vertically or in the light emitting direction.
  • the first slider 23 is connected at its lower end with a support ring 25 to which the head reflector 5 is attached.
  • the second slider 24 in turn is connected to a socket carrier 26, at the lower end of the lamp holder 13 and the light source 14 are arranged. Both slides 23 and 24 are axially displaceable by means of pins 27 and 28 respectively.
  • Fig. 4a shows first the light emission characteristic for a spotlight, in which the light source is disposed within the focal point of the reflector.
  • a very narrow beam is generated in this case, since the light beams are emitted in a very narrow angular range or nearly parallel.
  • a shift of the light source relative to the focal point of the reflector results in an extension of the beam.
  • this is a one-piece reflector - as known from the prior art - used, then results in a strong shift in Fig. 4b illustrated Lichtabstrahl characterizing.
  • the light emission characteristic is shown in the case where the lamp has been displaced 8mm from the focus of the reflector. As can be seen from the illustration, a uniform beam is no longer obtained in this case, instead, the light beams focus in an annular area, so that a dark spot is generated in the central region, which is undesirable from a lighting technical point of view.
  • Fig. 4c the light emission characteristic when using a two-part reflector according to the invention, wherein now the lamp has been moved by 15mm and the head reflector for adjustment by about 10.5mm in the light emitting direction.
  • the lamp has been moved by 15mm and the head reflector for adjustment by about 10.5mm in the light emitting direction.
  • a single beam is still generated, which is due to the adaptation of the position of the head reflector.
  • the present invention thus opens up the possibility of changing the light emission characteristic of a radiator in a wide range, wherein, in spite of all, the light is still emitted in the form of a uniform light bundle.
  • the main reflector 11 is fixedly disposed within the lamp housing. This is quite advantageous since, in this case, regardless of the setting of the light emission characteristic, the overall appearance of the luminaire does not change.
  • the adaptation according to the invention could of course also be achieved by arranging the light source or the head reflector in a fixed position and instead adjusting the two further components of the luminaire.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Led Devices (AREA)
  • Semiconductor Lasers (AREA)

Abstract

The invention relates to a spotlight (40) comprising a holder (13) for a light source (14), and a reflector (41) which at least partially surrounds the holder (13) and forms a light outlet (42) and is used to focus the light emitted by the light source (14). The arrangement of the holder (13) in relation to the reflector (41) can be varied in the light-emitting direction. The reflector (41) is split into a head reflector (5) surrounding the holder (13) and a main reflector (11) which is connected to the head reflector (5) in the light-emitting direction and forms the light emitting opening (42). The holder (13) can be displaced in relation to the two reflector parts (5, 11), and the arrangement of the two reflector parts (5, 11) in relation to each other can vary in the light-emitting direction.

Description

Die vorliegende Erfindung betrifft eine Strahlerleuchte gemäß dem Oberbegriff des Anspruches 1, welche eine Lampenfassung für eine Lichtquelle sowie einen die Lichtquelle zumindest teilweise umgebenden Reflektor zum Bündeln des von der Lichtquelle abgegebenen Lichts aufweist, wobei zum Verändern der Lichtabstrahlcharakteristik der Leuchte der Abstand zwischen dem Reflektor und der Lampenfassung für die Lichtquelle in Lichtabstrahlrichtung gesehen veränderbar ist. Ferner betrifft die vorliegende Erfindung einen sogenannten Varioreflektor zum Bündeln des von einer Lichtquelle abgegebenen Lichts.The present invention relates to a spotlight according to the preamble of claim 1, which has a lamp holder for a light source and a light source at least partially surrounding the reflector for bundling the light emitted from the light source, wherein for changing the Lichtabstrahlcharakteristik the light, the distance between the reflector and the lamp holder for the light source in the light emission direction is changeable. Furthermore, the present invention relates to a so-called varioreflector for bundling the light emitted by a light source.

Es ist bekannt, Strahler bzw. Strahlerleuchten mit sogenannten Varioreflektoren auszustatten. Hierbei handelt es sich um Reflektoren, bei denen die Bündelweite des von einer Lichtquelle abgegebenen Lichts durch mechanische Verstellung verändert werden kann. Bekannt ist in diesem Zusammenhang, dass die Lampe axial - also in Lichtabstrahlrichtung - gegenüber dem Reflektor verschoben wird. Durch die auf diese Weise erzielte Verlagerung der Lichtquelle relativ zum Brennpunkt des Reflektors lässt sich das von der Lichtquelle über den Reflektor abgegebene Licht von einem annähernd parallelen Strahlenbündel in einen Lichtkegel mit einem verhältnismäßig weiten Öffnungswinkel ändern. Dieser Effekt kann selbstverständlich auch dadurch erzielt werden, dass nicht die Lichtquelle sondern stattdessen der Reflektor gegenüber der Lichtquelle verstellt wird.It is known to equip spotlights or spotlights with so-called varioreflectors. These are reflectors in which the bundle width of the light emitted by a light source can be changed by mechanical adjustment. It is known in this context that the lamp is moved axially - ie in the light emission direction - relative to the reflector. By thus obtained displacement of the light source relative to the focal point of the reflector, the light emitted from the light source via the reflector light can be changed from an approximately parallel beam into a cone of light with a relatively wide opening angle. Of course, this effect can also be achieved by not adjusting the light source but instead the reflector with respect to the light source.

Eine Strahlerleuchte, bei der eine derartige Brennpunktverstellung der Lichtquelle gegenüber einem Reflektor möglich ist, ist bpsw. aus der EP 0 521 267 A1 bekannt. Durch einen bestimmten Verstellmechanismus kann der Fassungsträger für die Lichtquelle in einfacher Weise in Axialrichtung verschoben werden, so dass die Lichtabstrahlcharakteristik des Strahlers in gewünschter Weise beeinflusst wird.A spotlight, in which such a focus adjustment of the light source with respect to a reflector is possible, is bpsw. from the EP 0 521 267 A1 known. By a certain adjustment mechanism, the socket carrier for the light source can be moved in a simple manner in the axial direction, so that the light emission characteristic of the radiator is influenced in the desired manner.

Problematisch bei den bislang bekannten Varioreflektoren ist allerdings, dass der zur Verfügung stehende Bereich, über den eine Verstellung der Lichtquelle möglich ist, nur sehr klein ist. Der Grund hierfür liegt darin, dass das von der Lichtquelle über den Reflektor abgegebene Strahlenbündel sehr rasch zu einem Ring auffächert, wenn die Lichtquelle zu stark gegenüber dem Brennpunkt des Reflektors verschoben wird. In diesem Fall entsteht in der Mitte des Strahlenbündels eine dunkle Zone, so dass keine homogene Lichtabstrahlung mehr vorliegt. Eine derartige Auffächerung in einen Lichtring genügt allerdings den lichttechnischen Anforderungen für die Ausleuchtung eines Raumes oder eines Objekts in der Regel nicht.However, a problem with the previously known varioreflectors is that the available range, via which an adjustment of the light source is possible, is only very small. The reason for this is that the bundle of rays emitted by the light source via the reflector fans out very quickly into a ring if the light source is displaced too strongly with respect to the focus of the reflector. In this case, a dark zone is created in the middle of the beam, so no homogeneous light emission is more present. However, such a fanning out into a light ring generally does not meet the lighting requirements for the illumination of a room or an object.

Ferner ist aus der DE 40 16 531 Al eine Leuchte bekannt, bei welcher der Reflektor in zwei Bereiche unterteilt ist. Ein Kopfteil des Reflektors ist hierbei fest in Bezug auf die Lichtquelle angeordnet und kann gemeinsam mit der Lichtquelle gegenüber dem weiteren Reflektorteil verschoben werden. Auch bei dieser bekannten Leuchte wird allerdings das oben beschriebene Problem der Auffächerung des Lichts nur teilweise vermieden.Furthermore, from the DE 40 16 531 A1 a luminaire is known in which the reflector is divided into two areas. A head portion of the reflector is in this case fixedly arranged with respect to the light source and can be moved together with the light source relative to the further reflector part. Even with this known lamp, however, the above-described problem of fanning the light is only partially avoided.

Aus der WO 01/36871 A1 ist eine Strahlerleuchte mit einer Fassung für eine Lichtquelle sowie mit zwei Reflektoren bekannt. Die Fassung kann gegenüber den beiden Reflektoren verstellt werden; auch die Anordnung der beiden Reflektoren zueinander kann verändert werden.From the WO 01/36871 A1 is a spotlight with a socket for a light source and two reflectors known. The socket can be adjusted against the two reflectors; Also, the arrangement of the two reflectors to each other can be changed.

Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde, eine Strahlerleuchte mit einer verstellbaren Lichtabstrahlcharakteristik anzugeben, bei welcher die oben genannten Nachteile vermieden werden und welche insbesondere in einem möglichst großen Verstellbereich eine homogene Lichtabstrahlcharakteristik in Form eines einzigen Strahlenbündels aufweist.The present invention is accordingly an object of the invention to provide a spotlight with an adjustable Lichtabstrahlcharakteristik in which the above-mentioned disadvantages are avoided and which in particular in the largest possible adjustment range has a homogeneous Lichtabstrahlcharakteristik in the form of a single beam.

Die Aufgabe wird durch die in dem unabhängigen Anspruch 1 angegebene Erfindung gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.The object is solved by the invention specified in the independent claim 1. Advantageous developments of the invention are the subject of the dependent claims.

Kerngedanke der vorliegenden Erfindung ist es dementsprechend, den die Lichtquelle umgebenden Reflektor in zwei Bereiche zu unterteilen, nämlich einen die Lichtquelle umgebenden Kopfreflektor sowie einen sich in Lichtabstrahlrichtung an den Kopfreflektor anschließenden und die Lichtaustrittsöffinung bildenden Hauptreflektor, wobei einerseits die Lichtquelle gegenüber den beiden Reflektorteilen verstellbar und andererseits die Anordnung der beiden Reflektorteile zueinander in Lichtabstrahlrichtung veränderbar ist und wobei eine Verstellung der Fassung mit einer gleichzeitigen Verstellung eines der beiden Reflektorteile gekoppelt ist.The core idea of the present invention is accordingly to subdivide the reflector surrounding the light source into two areas, namely a head reflector surrounding the light source and a main reflector adjoining the head reflector in the light emission direction and forming the light exit opening, whereby the light source can be adjusted relative to the two reflector parts on the other hand, the arrangement of the two reflector parts to one another in the light emission direction is variable and wherein an adjustment of the socket is coupled with a simultaneous adjustment of one of the two reflector parts.

Gemäß einem ersten Aspekt der vorliegenden Erfindung wird dementsprechend eine Strahlerleuchte vorgeschlagen, welche eine Fassung für eine Lichtquelle sowie einen die Fassung zumindest teilweise umgebenden und eine Lichtaustrittsöffnung bildenden Reflektor zum Bündeln des von der Lichtquelle abgegebenen Lichts aufweist, wobei die Anordnung der Lichtquelle bezüglich des Reflektors in Lichtabstrahlrichtung veränderbar ist. Erfindungsgemäß ist der Reflektor in einen die Lichtquelle umgebenden Kopfreflektor sowie einen sich in Lichtabstrahlrichtung an den Kopfreflektor anschließenden und die Lichtabstrahlöffnung bildenden Hauptreflektor unterteilt, wobei einerseits die Fassung gegenüber den beiden Reflektorteilen verstellbar und andererseits die Anordnung der beiden Reflektorteile zueinander in Lichtabstrahlrichtung gesehen veränderbar ist.According to a first aspect of the present invention, a spotlight is accordingly proposed, which has a socket for a light source and a socket at least partially surrounding and a light exit opening forming reflector for bundling the light emitted from the light source, wherein the arrangement of the light source with respect to the reflector in light emission is changeable. According to the invention, the reflector is subdivided into a head reflector surrounding the light source as well as a main reflector adjoining the head reflector in the light emission direction and forming the light emission opening, on the one hand the socket opposite the two reflector parts adjustable and on the other hand, the arrangement of the two reflector parts seen each other in the light emitting direction is changeable.

Durch die erfindungsgemäße Unterteilung des Reflektors und die in Axialrichtung vorgesehene Verstellbarkeit der beiden Reflektorteile zueinander wird die Möglichkeit eröffnet, den Nachteil des Auffächerns des Strahlenbündels zu vermeiden. Wird nämlich die Lichtquelle bei der erfindungsgemäßen Leuchte gegenüber dem Brennpunkt des Hauptreflektors zu stark verschoben, so kann dieser Effekt durch eine entsprechende Anpassung der Anordnung des Kopfreflektors wieder ausgeglichen werden. Letztendlich werden die Lichtstrahlen auf diese Weise wiederum zu einem einzigen Strahlenbündel zusammengefasst.The inventive subdivision of the reflector and provided in the axial direction adjustability of the two reflector parts to each other opens the possibility to avoid the disadvantage of fanning the beam. Namely, if the light source in the luminaire according to the invention relative to the focus of the main reflector shifted too much, this effect can be compensated by a corresponding adjustment of the arrangement of the head reflector again. Ultimately, the light rays are in this way in turn combined into a single beam.

Der Effekt beruht dementsprechend darauf, dass von den drei Leuchten-Bestandteilen Lichtquelle bzw. Fassung für die Lichtquelle, Kopfreflektor und Hauptreflektor zumindest zwei davon - in Lichtabstrahlrichtung gesehen - verstellbar sind, und zwar relativ zueinander sowie gegenüber dem dritten Element. Hierbei muss es sich nicht zwangsläufig um die Lichtquelle bzw. die Fassung hierfür und den Kopfreflektor handeln, es wäre selbstverständlich auch denkbar, dass die Lichtquelle in einer bestimmten Position fixiert ist und stattdessen eine entsprechende Verstellung der beiden Reflektorteile durchgeführt wird. Gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung ist allerdings vorgesehen, dass der Hauptreflektor fest angeordnet ist und die Fassung für die Lichtquelle sowie der Kopfreflektor verstellbar ausgestaltet sind, da in diesem Fall die Außenabmessungen der Leuchte unabhängig von der eingestellten Lichtabstrahlcharakteristik unverändert bleiben.The effect is accordingly based on the fact that of the three luminous components light source or socket for the light source, head reflector and main reflector at least two of them - in the light emission direction - are adjustable, relative to each other and with respect to the third element. This does not necessarily have to be the light source or the socket and the head reflector, it would of course also conceivable that the light source is fixed in a certain position and instead a corresponding adjustment of the two reflector parts is performed. According to a preferred embodiment of the present invention, however, it is provided that the main reflector is fixed and the socket for the light source and the head reflector are designed to be adjustable, since in this case the outer dimensions of the lamp remain unchanged regardless of the set Lichtabstrahlcharakteristik.

Da bei einer Verstellung der Lichtquelle gegenüber dem Hauptreflektor die Position des Kopfreflektors immer in einer bestimmten Weise angepasst werden muss, um ein einheitliches Strahlenbündel zu erzielen, ist erfindungsgemäß vorgesehen, dass die Bewegungen beider verstellbaren Elemente gekoppelt sind. Vorzugsweise ist dementsprechend eine Verstelleinrichtung vorgesehen, bei deren Betätigung gleichzeitig beide verstellbaren Elemente der Leuchte in geeigneter Weise verschoben werden, so dass grundsätzlich die angestrebte Bündelung der Lichtstrahlen erfolgt. Hierdurch wird eine besonders einfache Verstellung der Lichtabstrahlcharakteristik ermöglicht, da zum Erzielen einer homogenen Lichtabstrahlung nicht mühsam die Positionen der verschiedenen Elemente aufeinander abgeglichen werden müssen. Die Verstelleinrichtung kann beispielsweise ein drehbares Verstellelement aufweisen, welches z.B. mit der Fassung sowie dem bewegbaren Reflektorteil in geeigneter Weise gekoppelt ist. Dieses Verstellelement kann z.B. durch eine Exzenterscheibe oder durch einen drehbaren Kulissenring gebildet sein. Wesentlich hierbei ist, dass die beiden verstellbaren Elemente nicht fest zueinander angeordnet sind, wie dies bei der Leuchte gemäß der DE 40 16 531 A1 der Fall ist. Stattdessen führen auch bei der gekoppelten Bewegung gemäß der bevorzugten Ausführungsform beide Elemente unterschiedliche Bewegungen durch, d.h., sie werden auch relativ zueinander verschoben.Since in an adjustment of the light source relative to the main reflector, the position of the head reflector must always be adjusted in a certain way in order to achieve a uniform beam, the invention provides that the movements of both adjustable elements are coupled. Preferably, accordingly, an adjusting device is provided, at the same time both adjustable elements of the luminaire are displaced in a suitable manner, so that in principle the desired bundling of the light beams takes place. As a result, a particularly simple adjustment of the light emission characteristic is made possible because the positions of the various elements do not have to be adjusted to one another in order to achieve a homogeneous light emission. The adjusting device may for example have a rotatable adjusting element, which is coupled for example with the socket and the movable reflector part in a suitable manner. This Adjustment can be formed for example by an eccentric or by a rotatable link ring. It is essential that the two adjustable elements are not fixed to each other, as in the lamp according to the DE 40 16 531 A1 the case is. Instead, even in the coupled movement according to the preferred embodiment, both elements perform different movements, ie, they are also displaced relative to each other.

Nachfolgend soll die Erfindung anhand der beiliegenden Zeichnung näher erläutert werden. Es zeigen:

  • Fig. 1 schematisch die Ausgestaltung einer erfindungsgemäßen Strahler-Leuchte;
  • Fig. 2a bis 2c ein erstes Ausführungsbeispiel einer Verstelleinrichtung zur gekoppelten Verstellung der Lichtquelle und des Kopfreflektors;
  • Fig. 3a bis 3c ein zweites Ausführungsbeispiel einer Verstellvorrichtung zur Veränderung der Lichtabstrahlcharakteristik und
  • Fig. 4a bis 4c Lichtabstrahldiagramme, welche den Effekt der erfindungsgemäßen Leuchte verdeutlichen.
The invention will be explained in more detail with reference to the accompanying drawings. Show it:
  • Fig. 1 schematically the embodiment of a radiator lamp according to the invention;
  • Fig. 2a to 2c a first embodiment of an adjusting device for the coupled adjustment of the light source and the head reflector;
  • Fig. 3a to 3c A second embodiment of an adjusting device for changing the Lichtabstrahlcharakteristik and
  • Fig. 4a to 4c Lichtabstrahldiagramme, which illustrate the effect of the lamp according to the invention.

In Fig. 1 sind lediglich diejenigen Elemente der allgemein mit dem Bezugszeichen 40 bezeichneten Strahlerleuchte dargestellt, welche zum Erzielen des erfindungsgemäßen Effekts der Anpassung der Lichtabstrahlcharakteristik erforderlich sind.In Fig. 1 only those elements of the spotlight generally designated by the reference numeral 40 are shown, which are necessary for achieving the inventive effect of the adaptation of the light emission characteristic.

Dementsprechend weist die Strahlerleuchte 40 eine in einer Fassung 13 gehaltene Lichtquelle 14 auf, die von einem topfförmigen Reflektor 41 umgeben ist, der an seiner Unterseite eine Lichtaustrittsöffnung 42 aufweist. Die Lichtabstrahlcharakteristik der Leuchte 40 wird hierbei primär durch die Gestalt des Reflektors 41 sowie durch die Anordnung der Lichtquelle 14 innerhalb des Reflektors 41 vorgegebenen.Accordingly, the spotlight 40 has a held in a socket 13 light source 14, which is surrounded by a cup-shaped reflector 41 having a light exit opening 42 on its underside. The Lichtabstrahlcharakteristik the light 40 is given primarily by the shape of the reflector 41 and by the arrangement of the light source 14 within the reflector 41.

Bei bislang bekannten Varioreflektoren war vorgesehen, die Lichtabstrahlcharakteristik durch eine Veränderung der Position der Lichtquelle innerhalb des Reflektors einzustellen. Durch eine Verschiebung der Lichtquelle gegenüber dem Brennpunkt des Reflektors erfolgte eine Auffächerung der Lichtstrahlen, so dass die Weite des abgegebenen Strahlenbündels zumindest in gewissen Grenzen eingestellt werden konnte.In previously known varioreflectors was provided to adjust the light emission characteristic by changing the position of the light source within the reflector. By shifting the light source relative to the focal point of the reflector, the light beams were fanned out so that the width of the emitted beam could be adjusted at least to a certain extent.

Diese Verschiebbarkeit der Lichtquelle 14 gegenüber dem Reflektor 41 ist auch bei der erfindungsgemäßen Strahlerleuchte 40 vorgesehen, was durch den ersten Doppelpfeil I schematisch dargestellt ist. Da eine zu weite Verschiebung der Lichtquelle 14 gegenüber dem Brennpunkt des Reflektors 41 allerdings zu einer ringartigen Auffächerung der Lichtstrahlen führen würde, ist erfindungsgemäß nunmehr vorgesehen, dass der Reflektor 41 in zwei Teile unterteilt ist, nämlich einen Kopfreflektor 5 sowie einen sich in Lichtabstrahlrichtung an den Kopfreflektor 5 anschließenden Hauptreflektor 11. Eine weitere Besonderheit der erfindungsgemäßen Leuchte 40 besteht darin, dass die Anordnung des Kopfreflektors 5 zu dem Hauptreflektor 11 ebenfalls veränderbar ist, was durch den zweiten Doppelpfeil II verdeutlicht wird. Wird nunmehr also die Lichtquelle 14 gegenüber dem Hauptreflektor 11 verschoben, so kann durch eine geeignete Anpassung der Position des Kopfreflektors 5 sichergestellt werden, dass auch für den Fall, dass die Lichtquelle 14 deutlich gegenüber dem Brennpunkt des ringförmigen Hauptreflektors 11 verschoben wird, trotz allem ein einziges Strahlenbündel über die Lichtaustrittsöffnung 42 abgegeben wird. Der Bereich, über den eine Veränderung der Lichtabstrahlcharakteristik der erfindungsgemäßen Strahlerleuchte 40 ermöglicht ist, ist hierdurch deutlich größer als bei bislang bekannten Strahlern.This displaceability of the light source 14 relative to the reflector 41 is also provided in the spotlight 40 according to the invention, which is schematically represented by the first double arrow I. However, since an excessively wide displacement of the light source 14 relative to the focal point of the reflector 41 would lead to a ring-like fanning of the light beams, it is now provided according to the invention that the reflector 41 is subdivided into two parts, namely a head reflector 5 and in the light emission direction at the Head reflector 5 subsequent main reflector 11. Another feature of the lamp 40 according to the invention is that the arrangement of the head reflector 5 to the main reflector 11 is also changeable, which is illustrated by the second double arrow II. So now if the light source 14 is moved relative to the main reflector 11, it can be ensured by a suitable adjustment of the position of the head reflector 5, that even in the event that the light source 14 is significantly shifted from the focal point of the annular main reflector 11, despite all single beam is emitted through the light exit opening 42. The range over which a change in the light emission characteristic of the emitter lamp 40 according to the invention is made possible is thereby significantly greater than in previously known emitters.

Die Anordnung des Kopfreflektors 5 im Hinblick auf die Lichtquelle 14 bzw. auf den Hauptreflektor 11 muss immer in einer bestimmten Weise erfolgen, um die gewünschte Bündelung der Lichtstrahlen zu erzielen. Vorzugsweise ist deshalb vorgesehen, dass die Lichtquelle 14 bzw. die Fassung 13 und der Kopfreflektor 5 nicht frei verstellbar sind, sondern dass stattdessen eine Kopplung der Verschiebewege von Lichtquelle 14 und Kopfreflektor 5 vorliegt. Eine erste Ausführungsform einer hierzu geeigneten Verstelleinrichtung, mit der Hilfe eine Verstellung der Fassung 13 mit einer gleichzeitigen Verstellung des Kopfreflektors 5 gekoppelt ist, soll nachfolgend anhand der Fig. 2a bis 2c erläutert werden.The arrangement of the head reflector 5 with respect to the light source 14 and the main reflector 11 must always be done in a certain way in order to achieve the desired bundling of the light beams. Preferably, therefore, it is provided that the light source 14 and the socket 13 and the head reflector 5 are not freely adjustable, but instead that a coupling of the displacement paths of the light source 14 and the head reflector 5 is present. A first embodiment of a suitable adjustment, with the help of an adjustment of the socket 13 with a simultaneous adjustment of the head reflector 5 is coupled, will be based on the Fig. 2a to 2c be explained.

Bei diesem ersten Ausführungsbeispiel sind zwei Führungsscheiben 1a und 1b mit dem (nicht weiter dargestellten) Leuchtengehäuse der erfindungsgemäßen Strahlerleuchte 40 fest verbunden. Zwischen beiden Scheiben 1a und 1b befindet sich ein Käfig 2, der mittels einer Längsachse 3a und einer Hohlachse 3b in zwei in den Führungsscheiben 1a und 1b vorgesehenen Führungsbohrungen 4a und 4b geführt ist. Am Ende der in Lichtabstrahlrichtung weisenden Hohlachse 3b ist der Kopfreflektor 5 befestigt, der rotationssymmetrisch ausgestaltet ist.In this first embodiment, two guide discs 1a and 1b with the (not shown) luminaire housing of the emitter lamp 40 according to the invention are firmly connected. Between the two disks 1a and 1b there is a cage 2, which is guided by means of a longitudinal axis 3a and a hollow shaft 3b in two guide bores 4a and 4b provided in the guide disks 1a and 1b. At the end of pointing in light emission direction hollow axis 3b of the head reflector 5 is fixed, which is configured rotationally symmetrical.

Innerhalb des Käfigs 2 befindet sich eine Exzenterscheibe 6, welche um eine Achse 7, die im rechten Winkel zur Lichtabstrahlrichtung bzw. zur Achse 3a sowie zur Hohlachse 3b steht und mit dem Leuchtengehäuse verbunden ist, um einen Winkelbereich von bis zu 180° frei drehbar ist. Eine zwischen der Unterseite der oberen Führungsscheibe 1a und der Oberseite des Käfigs 2 angeordnete Feder 8 drückt einen in Verlängerung der Achse 3a stehenden ersten Taststift 9 an den oberen Rand der Exzenterscheibe 6, der eine erste Bahnkurve 17a bildet.Within the cage 2 there is an eccentric disc 6, which is freely rotatable about an axis 7, which is at right angles to the Lichtabstrahlrichtung or to the axis 3a and the hollow shaft 3b and is connected to the lamp housing by an angular range of up to 180 ° , A arranged between the underside of the upper guide plate 1a and the top of the cage 2 spring 8 presses a standing in extension of the axis 3a first stylus 9 to the upper edge of the eccentric disc 6, which forms a first trajectory 17a.

Wie in den Fig. 2a bis 2c dargestellt ist, verändert sich durch ein Drehen der Exzenterscheibe 6 der mit den Bezugszeichen 10a bis 10c dargestellte Abstand der Spitze des als Führungsteil wirkenden ersten Taststifts 9 von der Drehachse 7 der Exzenterscheibe 6 und dementsprechend auch die Position des Käfigs 2 sowie des über die Hohlachse 3b starr mit dem Käfig 2 verbundenen Kopfreflektors 5 gegenüber dem fest mit dem Leuchtengehäuse verbundenen Hauptreflektor 11. Durch ein Drehen der Exzenterscheibe 6 im Uhrzeigersinn kann somit der Kopfreflektor 5 in Lichtabstrahlrichtung und damit in den Hauptreflektor 11 geschoben werden. Der obere Rand 11a des Hauptreflektors 11 ist dabei derart bemessen, dass grundsätzlich eine Überlappung zwischen beiden Reflektorteilen 5, 11 vorliegt, um eine unerwünschte seitliche Lichtabstrahlung zu vermeiden.As in the Fig. 2a to 2c is shown by changing the eccentric disc 6 of the reference numerals 10a to 10c shown distance of the tip of acting as a guide part first stylus 9 from the rotation axis 7 of the eccentric disc 6 and, accordingly, the position of the cage 2 as well as over the hollow axis 3b rigidly connected to the cage 2 Kopfreflektors 5 relative to the fixed to the lamp housing main reflector 11. By turning the eccentric disk 6 clockwise thus the head reflector 5 can be pushed in the light emitting direction and thus in the main reflector 11. The upper edge 11a of the main reflector 11 is dimensioned such that in principle there is an overlap between the two reflector parts 5, 11 in order to avoid undesired lateral light emission.

Innerhalb der an der Unterseite des Käfigs 2 angeordneten Hohlachse 3b befindet sich ferner eine weitere axial verschiebbare Achse 12, an deren Ende die Lampenfassung 13 mit der Lampe 14 montiert ist. Am anderen Ende dieser Achse 12 befindet sich ein weiterer Taststift 15, der mit Hilfe einer zweiten Feder 16, die zwischen einer Schulterfläche der Hohlachse 3b und einer Schulterfläche der Achse 12 anliegt, gegen die Unterseite der Exzenterscheibe 6 gedrückt wird, welche eine zweite Bahnkurve 17b bildet.Within the arranged on the underside of the cage 2 hollow shaft 3b is also a further axially displaceable axis 12, at the end of the lamp holder 13 is mounted with the lamp 14. At the other end of this axis 12 is another stylus 15, which is pressed by means of a second spring 16 which abuts between a shoulder surface of the hollow axis 3b and a shoulder surface of the axis 12, against the underside of the eccentric disc 6, which a second trajectory 17b forms.

Durch Drehen der Exzenterscheibe 6 verändert' sich dementsprechend auch der mit den Bezugszeichen 18a bis 18c bezeichnete Abstand des Taststifts 15 gegenüber der Achse 7 und damit die Position der Lampe 14 gegenüber Hauptreflektor 11.Accordingly, by turning the eccentric disk 6, the distance between the stylus 15 and the axis 7, and thus the position of the lamp 14 with respect to the main reflector 11, changes as indicated by the reference numerals 18a to 18c.

Bei einem Verdrehen der Exzenterscheibe 6 wird damit nicht nur die Position des Kopfreflektors 5 sondern auch die Position der Lichtquelle 14 verändert. Je nach Gestaltung der beiden Bahnkurven 17a und 17b der Exzenterscheibe 6 können damit die Positionen des Kopfreflektors 5 und der Lampe 14 gegenüber dem Hauptreflektor 11 beliebig - aber aufeinander abgestimmt - verändert werden. Wichtig hierbei ist, dass sich auch die Anordnung von Lampe 14 und Kopfreflektor 5 zueinander ändert. Die Bahnkurven werden dementsprechend derart gewählt werden, dass bei einer Verstellung der Lichtquelle 14 automatisch auch eine geeignete Anpassung der Position des Kopfreflektors 5 erfolgt, so dass ein einheitliches Strahlenbündel abgegebenen wird.Upon rotation of the eccentric 6 so that not only the position of the head reflector 5 but also the position of the light source 14 is changed. Depending on the design of the two trajectories 17a and 17b of the eccentric disc 6 so that the positions of the head reflector 5 and the lamp 14 with respect to the main reflector 11 as desired - but matched to each other - be changed. It is important that the arrangement of lamp 14 and head reflector 5 to each other changes. Accordingly, the trajectories will be chosen such that upon an adjustment of the light source 14, a suitable adaptation of the position of the head reflector 5 automatically takes place, so that a uniform beam is emitted.

Ein zweites Ausführungsbeispiel einer geeigneten Verstelleinrichtung zur Veränderung der Position der Lichtquelle und des Reflektorteils ist in den Fig. 3a bis 3c dargestellt. Fig. 3a zeigt die Verstelleinrichtung im seitlichen Querschnitt, während Fig. 3b die Verstelleinrichtung in Draufsicht zeigt. Fig. 3c wiederum zeigt die Seitenansicht eines Dreh- oder Kulissenrings, der bei dieser zweiten Ausführungsform der Verstelleinrichtung zum Einsatz kommt.A second embodiment of a suitable adjusting device for changing the position of the light source and the reflector part is in the Fig. 3a to 3c shown. Fig. 3a shows the adjusting device in the lateral cross section, while Fig. 3b the adjusting device in plan view shows. Fig. 3c again shows the side view of a rotary or sliding ring, which is used in this second embodiment of the adjustment.

Bei dieser zweiten Variante sind zwei Führungsscheiben 20a und 20b fest mit dem Leuchtengehäuse der erfindungsgemäßen Leuchte 40 verbunden. Beide Führungsscheiben 20a und 20b sind ferner über einen zylindrischen Führungskörper 21 verbunden, der axial zur Lichtabstrahlrichtung des Strahlers angeordnet ist und zwei Ausfräsungen 22a und 22b parallel zu seiner Achse aufweist. In beiden Ausfräsungen 22a und 22b sind zwei Schieber 23 und 24 angeordnet, die vertikal bzw. in Lichtabstrahlrichtung gleiten können. Der erste Schieber 23 ist dabei an seinem unteren Ende mit einem Trägerring 25 verbunden, an welchem der Kopfreflektor 5 befestigt ist. Der zweite Schieber 24 wiederum ist mit einem Fassungsträger 26 verbunden, an dessen unteren Ende die Lampenfassung 13 und die Lichtquelle 14 angeordnet sind. Beide Schieber 23 und 24 sind mit Hilfe von Stiften 27 bzw. 28 axial verschiebbar.In this second variant, two guide disks 20a and 20b are fixedly connected to the luminaire housing of the luminaire 40 according to the invention. Both guide discs 20a and 20b are further connected by a cylindrical guide body 21, which is arranged axially to the light emission direction of the radiator and has two recesses 22a and 22b parallel to its axis. In both recesses 22a and 22b, two slides 23 and 24 are arranged, which can slide vertically or in the light emitting direction. The first slider 23 is connected at its lower end with a support ring 25 to which the head reflector 5 is attached. The second slider 24 in turn is connected to a socket carrier 26, at the lower end of the lamp holder 13 and the light source 14 are arranged. Both slides 23 and 24 are axially displaceable by means of pins 27 and 28 respectively.

Die Verstellung der beiden Schieber 23 und 24 und damit der Lichtquelle 14 und des Kopfreflektors 5 erfolgt über einen Dreh- oder Kulissenring 29, der ringförmig um den Führungskörper 21 und die beiden Schieber 23 und 24 angeordnet ist und um seine zur Lichtabstrahlrichtung parallel liegende Achse verdreht werden kann. Seitlich in den Drehring 29 sind zwei Führungsbahnen bzw. Bahnkurven 30a und 30b eingefräst, in welche die beiden Stifte 27 und 28 der Schieber 23 und 24 eingreifen. Wird dementsprechend der Drehring 29 um seine Achse verdreht, so gleiten die beiden Stifte 27 und 28 entlang der Bahnkurven 30a und 30b und verschieben hierbei die Position des Kopfreflektors 5 und der Lampe 14 gegenüber dem Hauptreflektor. Wiederum können somit je nach Gestaltung der beiden Bahnkurven 30a und 30b des Drehrings 29 die Positionen des Kopfreflektors 5 und der Lampe 14 gegenüber dem Hauptreflektor 11 beliebig - aber aufeinander abgestimmt - verändert werden.The adjustment of the two slides 23 and 24 and thus the light source 14 and the head reflector 5 via a rotary or sliding ring 29 which is arranged annularly around the guide body 21 and the two slides 23 and 24 and rotated about its axis parallel to the light emission axis can be. Laterally in the rotary ring 29 two guideways or trajectories 30a and 30b are milled, in which engage the two pins 27 and 28 of the slide 23 and 24. Accordingly, when the rotary ring 29 is rotated about its axis, the two pins 27 and 28 slide along the trajectories 30a and 30b, thereby shifting the position of the head reflector 5 and the lamp 14 with respect to the main reflector. Again, depending on the design of the two trajectories 30a and 30b of the rotary ring 29, the positions of the head reflector 5 and the lamp 14 relative to the main reflector 11 can be changed as desired - but coordinated with each other.

Die Wirkung der erfindungsgemäßen Verstelleinrichtung für die Strahlerleuchte ist in den Fig. 4a bis 4c dargestellt. Fig. 4a zeigt dabei zunächst die Lichtabstrahlcharakteristik für eine Strahlerleuchte, bei welcher die Lichtquelle innerhalb des Brennpunkts des Reflektors angeordnet ist. Wie der Darstellung entnommen werden kann, wird in diesem Fall ein sehr schmales Strahlenbündel erzeugt, da die Lichtstrahlen in einem sehr engen Winkelbereich bzw. nahezu parallel abgegeben werden.The effect of the adjusting device according to the invention for the spotlight is in the Fig. 4a to 4c shown. Fig. 4a shows first the light emission characteristic for a spotlight, in which the light source is disposed within the focal point of the reflector. As can be seen from the illustration, a very narrow beam is generated in this case, since the light beams are emitted in a very narrow angular range or nearly parallel.

Eine Verschiebung der Lichtquelle gegenüber dem Brennpunkt des Reflektors hat eine Erweiterung des Strahlenbündels zur Folge. Wird allerdings hierbei ein einteiliger Reflektor - wie aus dem Stand der Technik bekannt - verwendet, so ergibt sich bei einer starken Verschiebung die in Fig. 4b dargestellte Lichtabstrahlcharakteristik. Die Lichtabstrahlcharakteristik ist für den Fall dargestellt, dass die Lampe um 8mm gegenüber dem Brennpunkt des Reflektors verschoben wurde. Wie der Darstellung entnommen werden kann, wird in diesem Fall kein einheitliches Strahlenbündel mehr erzielt, stattdessen bündeln sich die Lichtstrahlen in eine Ringfläche auf, so dass im mittleren Bereich ein dunkler Fleck erzeugt wird, was aus lichttechnischer Sicht gesehen unerwünscht ist.A shift of the light source relative to the focal point of the reflector results in an extension of the beam. However, if this is a one-piece reflector - as known from the prior art - used, then results in a strong shift in Fig. 4b illustrated Lichtabstrahlcharakteristik. The light emission characteristic is shown in the case where the lamp has been displaced 8mm from the focus of the reflector. As can be seen from the illustration, a uniform beam is no longer obtained in this case, instead, the light beams focus in an annular area, so that a dark spot is generated in the central region, which is undesirable from a lighting technical point of view.

Fig. 4c hingegen zeigt die Lichtabstrahlcharakteristik bei Verwendung eines erfindungsgemäßen zweigeteilten Reflektors, wobei nunmehr die Lampe um 15mm und der Kopfreflektor zur Anpassung um etwa 10,5mm in Lichtabstrahlrichtung verschoben wurde. Wie der Darstellung entnommen werden kann, wird trotz der verhältnismäßig starken Verschiebung der Lichtquelle nach wie vor ein einziges Strahlenbündel erzeugt, was auf die Anpassung der Position des Kopfreflektors zurückzuführen ist. Fig. 4c however, the light emission characteristic when using a two-part reflector according to the invention, wherein now the lamp has been moved by 15mm and the head reflector for adjustment by about 10.5mm in the light emitting direction. As can be seen from the illustration, despite the relatively strong displacement of the light source, a single beam is still generated, which is due to the adaptation of the position of the head reflector.

Insgesamt gesehen wird somit durch die vorliegende Erfindung die Möglichkeit eröffnet, die Lichtabstrahlcharakteristik eines Strahlers in weiten Bereichen zu verändern, wobei trotz allem das Licht noch in Form eines einheitlichen Lichtbündels abgegeben wird. Anzumerken ist in diesem Zusammenhang, dass bei den in den Fig. 2a bis 2c und 3a bis 3c dargestellten Ausführungsbeispielen grundsätzlich davon ausgegangen wurde, dass der Hauptreflektor 11 fest innerhalb des Leuchtengehäuses angeordnet ist. Dies ist durchaus vorteilhaft, da sich in diesem Fall unabhängig von der Einstellung der Lichtabstrahlcharakteristik das Gesamtaussehen der Leuchte nicht verändert. Die erfindungsgemäße Anpassung könnte allerdings selbstverständlich auch dadurch erzielt werden, dass die Lichtquelle oder der Kopfreflektor in einer festen Position angeordnet und stattdessen die beiden weiteren Komponenten der Leuchte verstellbar sind.Overall, the present invention thus opens up the possibility of changing the light emission characteristic of a radiator in a wide range, wherein, in spite of all, the light is still emitted in the form of a uniform light bundle. It should be noted in this context that in the in the FIG. 2a to 2c and 3a to 3c illustrated embodiments has been assumed in principle that the main reflector 11 is fixedly disposed within the lamp housing. This is quite advantageous since, in this case, regardless of the setting of the light emission characteristic, the overall appearance of the luminaire does not change. Of course, the adaptation according to the invention could of course also be achieved by arranging the light source or the head reflector in a fixed position and instead adjusting the two further components of the luminaire.

Claims (10)

  1. A spotlight (40) having a holder (13) for a light source (14) and also a reflector (41) at least partially surrounding the holder (13) and forming a light-outlet opening (42) for focusing the light emitted by the light source (14),
    wherein the arrangement of the holder (13) can be varied in relation to the reflector (41) in the light-radiating direction,
    wherein the reflector (41) is split into a head reflector (5) surrounding the holder (13) and also a main reflector (11) connected to the head reflector (5) in the light-radiating direction and forming the light-radiating opening (42), wherein on the one hand the holder (13) can be adjusted in relation to the two reflector portions (5, 11) and on the other hand the arrangement of the two reflector portions (5, 11) can be varied in relation to each other, viewed in the light-radiating direction,
    characterised in that
    an adjustment of the holder (13) is coupled with a simultaneous adjustment of one of the two reflector portions (5, 11).
  2. A spotlight according to claim 1,
    characterised by
    an adjusting device for simultaneous adjustment of the holder (13) and the movable reflector portion (5, 11).
  3. A spotlight according to claim 2,
    characterised in that
    the adjusting device has a rotatable adjusting element (6, 29) which is coupled to the holder (13) and also to the movable reflector portion (5, 11).
  4. A spotlight according to claim 3,
    characterised in that
    the adjusting element is formed by an eccentric disc (6) which has cam curves (17a, 17b) for guide portions (9, 15) that are connected to the holder (13) and also to the movable reflector portion (5, 11).
  5. A spotlight according to claim 4,
    characterised in that
    the eccentric disc (6) can be rotated about an axis (7) that is arranged perpendicularly to the light-radiation direction.
  6. A spotlight according to claim 3,
    characterised in that
    the adjusting element is formed by a rotary ring (29) which has two cam tracks (30a, 30b) that are formed as recesses and cooperate with guide pins (27, 28) connected to the holder (13) and also to the movable reflector portion (5, 11).
  7. A spotlight according to claim 6,
    characterised in that
    the rotary ring (29) can be rotated about an axis that is arranged parallel to the light-radiating direction.
  8. A spotlight according to one of the previous claims,
    characterised in that
    the main reflector (11) is fixedly arranged inside a luminaire housing or is fixedly connected to a luminaire housing.
  9. A spotlight according to one of the previous claims,
    characterised in that
    the head reflector (5) is configured in a dish-shaped manner, and the main reflector (11) is formed by a reflector ring.
  10. A spotlight according to one of the previous claims,
    characterised in that
    the head reflector (5) and the main reflector (11) are arranged so that they overlap at all times in the light-radiating direction.
EP06706741A 2005-02-17 2006-02-08 Spotlight with a variable light-emitting characteristic Not-in-force EP1848922B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007348A DE102005007348A1 (en) 2005-02-17 2005-02-17 Spotlight with variable light emission characteristic
PCT/EP2006/001101 WO2006087126A1 (en) 2005-02-17 2006-02-08 Spotlight with a variable light-emitting characteristic

Publications (2)

Publication Number Publication Date
EP1848922A1 EP1848922A1 (en) 2007-10-31
EP1848922B1 true EP1848922B1 (en) 2010-07-14

Family

ID=36190735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706741A Not-in-force EP1848922B1 (en) 2005-02-17 2006-02-08 Spotlight with a variable light-emitting characteristic

Country Status (4)

Country Link
EP (1) EP1848922B1 (en)
AT (1) ATE474186T1 (en)
DE (2) DE102005007348A1 (en)
WO (1) WO2006087126A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2438637A (en) * 2006-05-31 2007-12-05 Jacob Dyson Active lighting system having automatically changing light effect.
USD571498S1 (en) 2006-08-21 2008-06-17 Jacob Dyson Light
DE102006047837A1 (en) * 2006-10-10 2008-04-17 Volkswagen Ag Motor vehicle headlight, has parabolic reflector, whose focus point is brought in combination with light source for forming driving light, where reflector is focused and defocused for forming day driving light opposite to light source
DE502007005800D1 (en) 2007-01-22 2011-01-05 Osram Gmbh METHOD FOR CONTROLLING A HALF BRIDGE SWITCHING AND CORRESPONDING HALF BRIDGE SWITCHING
US8118451B2 (en) 2008-03-13 2012-02-21 Fraen Corporation Reflective variable spot size lighting devices and systems
EP4065885A4 (en) * 2019-11-26 2023-12-20 Philip Gotthelf Adjustable magnetic induction lighting fixture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729065A (en) * 1987-04-24 1988-03-01 Arriflex Corporation Photography light
US4855884A (en) * 1987-12-02 1989-08-08 Morpheus Lights, Inc. Variable beamwidth stage light
DE4016531A1 (en) * 1990-05-22 1991-11-28 Trilux Lenze Gmbh & Co Kg Recessed spotlight for ceiling mounting - has adjustable reflector provided in two parts respectively attached to lamp holder and base frame
DE4121576C2 (en) * 1991-06-29 1994-03-17 Zumtobel Licht Luminaire with adjustable lamp
AU3083801A (en) * 1999-11-18 2001-05-30 Morpheus Technologies, Llc Light projector

Also Published As

Publication number Publication date
EP1848922A1 (en) 2007-10-31
WO2006087126A1 (en) 2006-08-24
DE102005007348A1 (en) 2006-08-31
ATE474186T1 (en) 2010-07-15
DE502006007420D1 (en) 2010-08-26

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