EP0870979B1 - Luminaire comprising an adjustable reflector - Google Patents

Luminaire comprising an adjustable reflector Download PDF

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Publication number
EP0870979B1
EP0870979B1 EP98106625A EP98106625A EP0870979B1 EP 0870979 B1 EP0870979 B1 EP 0870979B1 EP 98106625 A EP98106625 A EP 98106625A EP 98106625 A EP98106625 A EP 98106625A EP 0870979 B1 EP0870979 B1 EP 0870979B1
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EP
European Patent Office
Prior art keywords
reflector
lamp
luminaire according
segments
head region
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.)
Expired - Lifetime
Application number
EP98106625A
Other languages
German (de)
French (fr)
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EP0870979A3 (en
EP0870979A2 (en
Inventor
Günther Dr. Sejkora
Anton Feurstein
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 Staff GmbH
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Zumtobel Staff GmbH
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Publication date
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Publication of EP0870979A2 publication Critical patent/EP0870979A2/en
Publication of EP0870979A3 publication Critical patent/EP0870979A3/en
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Classifications

    • 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
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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
    • F21V7/10—Construction
    • F21V7/16—Construction with provision for adjusting the curvature
    • 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
    • F21V7/10—Construction
    • F21V7/18—Construction with provision for folding or collapsing

Definitions

  • the invention relates to a lamp, the reflector by a Adjustment device adjustable with respect to the lamp and in the respective Adjustment position can be determined.
  • a lamp of this type is described in DE 43 04 587 A1. This is what it is about is a luminaire in which the light distribution curve (LVK) by the user can be changed. For this purpose, the reflector and the lamp are relative adjusted to each other. This makes the light distribution curve between narrow beam or adjusted point and wide beam.
  • LLK light distribution curve
  • the aim is to have the light spot on the directly illuminated one To make the area equally bright.
  • this is only possible to a very limited extent, because if the adjustment distance between lamp and reflector becomes too large, in In the middle of the light distribution curve, a light dip, that is, it is formed dark spot.
  • Figures 1 to 3 show light distribution curves of known Luminaires looking in the direction perpendicular to the direction of light propagation.
  • Fig. 1 shows a narrow beam setting
  • Fig.2 shows a slightly wide beam Setting
  • Fig. 3 is a wide beam setting. 3 shows in particular clearly that the light distribution is insufficient.
  • a lamp is also known, the reflector with respect the lamp is adjustable.
  • the round reflector consists of one Head area and opposite side areas, which by Segments are formed.
  • the side areas are marked by a Spring force biased against side stops, so that they are at a Relative movement between the side areas and the stops pivoted become.
  • the between the reflection surface and the central axis Luminaire included angles changed.
  • a relative movement between the side areas and the stops is at the lamp known from US 4,855,884 obtained in that the one Spindle held reflector with the help of a motor opposite the fixed one Stops is moved axially.
  • Such a construction is, however relatively expensive.
  • the invention is accordingly based on the object in a lamp above described a simple manual adjustment of the Enable reflector.
  • That of the central axis of the lamp and the angle included in the reflecting surface is variable and adjustable.
  • the Adjustment movement can be a lateral swivel or tilt movement or also at the same time include an axial movement. This allows a uniform Achieve light distribution in the area of the light distribution zone. This is on it attributed to that due to the usual distances and with a reflector Positions of the corresponding surface areas of the reflection surface and the Lamp a favorable distribution in a tilt adjustment according to the invention of light. This enables a particularly favorable light distribution reach if the head area of the reflector with respect to the lateral area at the adjustment a little or no tilting movement and / or only an axial Movement.
  • a simple adjustment of the reflector is made possible by the fact that the reflector seen along the central axis of the lamp - has a round shape and the Circumferential wall of the reflector at least in the side area from itself in the direction of light propagation extending segments that are in each other Overlap circumferential direction.
  • the side areas are each marked with a Spring force biased against side stops, the stops by a Ring are formed, on the inner circumferential surface of which the segments rest, and wherein the ring is rotatably mounted on the base part about the central axis of the lamp and a Actuator for the adjusting device forms.
  • the subclaims contain features that are too simple, small and inexpensive construction methods and a handling-friendly and fast Allow adjustment.
  • the lamp generally designated 1 comprises a base part 2, with which it on or in a holding system 3 is held, and the one by means of an adjusting device 4 Reflector 5, which is adjustable by the adjusting device 4 and in each set position can be determined.
  • Reflector 5 which is adjustable by the adjusting device 4 and in each set position can be determined.
  • a lamp 6, here a halogen lamp held releasably by means of a socket 7, which is parallel to Central axis 8 of the symmetrical reflector 5 and the lamp 6 immovably on one Cross member 9 is held, on the base part 2 or here on the adjusting device 4th is attached.
  • the lamp 1 is used in the present embodiment for lighting relatively small areas or spaces, e.g. for lighting of Exhibition objects in exhibition rooms or museums.
  • the lamp 1 by another Adjustment device 11 can be adjusted transversely to the central axis 8, in particular by pivoting and held lockable in the respective adjustment position.
  • the adjustment movement can only in one direction, in two directions perpendicular to each other or in all Directions of the existing, here horizontal transverse plane E1. It can the suspension may be swinging or gimbal.
  • the lamp 1 is on Spotlights e.g.
  • a support 15 which is the present Design around a built-in housing 15a or e.g. formed by a profile Built-in housing channel can act, which is kept free in the room or in one Installation opening of a wall or ceiling can be used and fastened in the usual way.
  • the joint part 14b fastened to the holder is shown with respect to the first joint 12 in the longitudinal direction of the installation housing duct 15a preferably offset off-center, is attached here to the top of the holding plate 13a.
  • the second joint part, not shown, can be directly or indirectly on the carrier 15 be attached.
  • the lamp 1 is in a round hole 16 the holding plate 13a is pivotally mounted, the holding plate 13a being approximately in half Height of the lamp 1 is.
  • the base part 2 is formed by a base ring 2a, which is located approximately at the level of the holding plate 13a with play in the hole 16.
  • the first Joint 12 is formed by two pivot pins 12b projecting diametrically from base part 2 formed, each encompassing a bearing eye 12c formed on the holder 13, which by a trough and a plate 12d overlapping the pivot pin 12b, optionally with an upper trough can be formed.
  • the plate 12d can with such great tension against the Press pivot pin 12b, e.g. be screwed that the lamp 1 by manual Overpressing is pivotable, however, it is determined against an unwanted adjustment is.
  • the light source 6a of the lamp 6 is located at the level of the hinge axis 12a.
  • the reflector 5 can be one with opposite ones Walls in the form of profiles which are mirror images of the central plane E2, act in particular for elongated lights, such as is common with fluorescent tubes. In principle, such a reflector 5 can also be seen in FIG. 4.
  • the lamp 1 and the reflector 5 in horizontal cross-section shaped round, the radiator preferably being is a cross reflector, in which a substantial part of each other opposite reflection surfaces or here from the round reflection surface 5a reflected rays S intersect the central axis 8.
  • Adjustment device 4 designed so that the between the reflection surface 5a and Center axis 8 included angle W is variable.
  • This will cause the Reflector wall 5b around a tilt axis 17, which is in the form of a profile with reflection surfaces extends in a transverse plane and lies approximately in the reflection surface 5a.
  • this tilt axis 17 is essentially a tangent.
  • the tilt axis 17 does not have to be stationary. You can too sideways or following the shape of the reflector wall 5b during the tilting process adjust.
  • when tilting there is a vertical movement of the reflector 5 takes place, in particular in its upper end region.
  • the adjusting device 4 has an effective one parallel to the central axis 8 Movement drive 18 for the reflector 5 with an actuator 21, which of the Beam side 19 light 1 is accessible here.
  • the actuator 21 acts through Movement change gear 22 on a slide 23 which is in a parallel to the Center axis 8 extending guide 24 slidably and with the upper region of the Reflector 5 is connected.
  • the actuator 21 is a rotating ring 21a, which is free on the inner circumference of the base ring 2a is rotatably supported, engaging under the base ring 2a with a flange 21b and with engages a spring or snap ring 25 seated in an annular groove, whereby a Pivot bearing is formed.
  • the rotating ring 21a points from the flange 21b projecting engagement pins 21c.
  • the inner circumference of the rotating ring 21a is rounded or shaped roof-shaped and dimensioned so large that the reflector 5 with its outside abuts a line of contact forming the tilt axis 17.
  • a sleeve section 21d is formed, which forms the hollow cylindrical guide 24 inside, in the slider 23 is displaceable in the form of a disk 23a and a guide sleeve 23b is stored.
  • the sleeve portion 21d and the cross member 9, here in the form of a Plate extend several arranged evenly distributed on the circumference Spacers 26, the by fastening screws 26a and surrounding sleeves 26b for the cross member 9 can be formed.
  • this consists of overlapping scales Segments 5c, which are connected to a support part 32 only at their ends facing the lamp 6 attached, e.g. are riveted, s. Rivet 33 in Fig. 6.
  • the support member 32 spans the segments 5c with its free ends radially outwards against the tilt axis 17 and it is preferably formed by a spring washer 32a to which the segments 5c are attached, and prestresses the segments 5c in the sense described above.
  • the spring washer 32a can be concave or dome-shaped and form the reflector in the head area or from a concave or dome-shaped head reflector 5d.
  • the support part 32 and the head reflector 5d are attached to the edge of a hole 34, e.g. transhipped, through which the lamp 6 extends into the upper region of the reflector 5.
  • the reflector 5 can be moved by a manual movement of the Adjust actuator 21 axially and overall (straight profiled reflector for elongated lights) or in its lateral outer, formed by the segments 5c Tilt area. Positions can be selected in the existing adjustment range set in the two positions shown in FIG. 4 Adjustment. In the position shown on the left in FIG. 4, the head area is located of the reflector 5 in a rear, here upper with respect to the spreading device A. Position and the free edge of the reflector 5 in a laterally offset inwards Position. In the position shown on the right in FIG. 4, the head area of the Reflector 5 in a front, in this case lower position with respect to the direction of propagation A.
  • the reflector 5 forms on both sides of the central plane E2 consequently the head area, which is movable or adjustable parallel to the central axis 8 and the side area around its attachment point in the head area in one at right angles to the center plane E2 swivel plane with the Head area is connected and at the same time around this attachment point and around the associated tilt axis 17 pivots.
  • the spreading of the side areas of the reflector 5 the dimension x takes place automatically due to the tension of the spring washer 32a, which Side areas biased outwards. This tension also ensures that the slide 23 is biased with the pins 28 against the curve sections 31 and thus by the Curve sections 31 does not stand out during an adjustment in the direction of propagation A.
  • the adjustment movements of the head area described above apply and the side areas of the reflector 5 both when the reflector is a 4 is also a profile-like body extending at right angles to the plane of the drawing when the reflector 5 has a round shape with respect to the plane E1.
  • the first there is no need to divide the side areas of the reflector 5 into slats, since the Side areas can be adjusted as uniform wall parts.
  • the reflector 5 With a round shape the reflector 5, on the other hand, requires the division of the side areas into one another overlapping segments 5c, so that when the reflector 5 expansion and contraction of the round reflector peripheral wall no gaps arise. Due to the spread caused by the spring washer 32a Segments ensure their tight contact with each other, so that there are no gaps here either arise.
  • Reflector systems head reflector 5d and side areas or round peripheral wall with Segments 5c
  • the light distribution curve of FIG. 7 a narrow beam setting and the corresponds to large cross-sectional dimension y
  • the light distribution curve according to FIG. 8 corresponds to a wide beam setting and the smaller cross-sectional dimension x.
  • Those shown in Figures 7 and 8 with solid lines Light distribution areas clarify the respective one caused by the head reflector 5d Light distribution.
  • the light distribution partial areas shown in dashed lines illustrate the caused by the peripheral wall with the slats 5c of the reflector Light distribution areas.
  • the dash-dotted light distribution areas clarify each a combined, through the head reflector 5d and the peripheral wall with the Segments 5c caused light distribution area.

Abstract

The lamp (1) has a base supporting a light source (6) and an associated rear reflector (5), which is adjustable relative to the light source via an adjustment device (4) for alternating the direction of the output beam. The angle between the reflector axis and the centre axis of the light source may be adjustable continuously by pivoting the reflector about an axis (17) transverse to the centre axis of the light source. The reflector may be further adjusted by movement parallel to the centre axis of the light source.

Description

Die Erfindung bezieht sich auf eine Leuchte, deren Reflektor durch eine Verstellvorrichtung bezüglich der Lampe verstellbar und in der jeweiligen Verstellposition feststellbar ist.The invention relates to a lamp, the reflector by a Adjustment device adjustable with respect to the lamp and in the respective Adjustment position can be determined.

Eine Leuchte dieser Art ist in der DE 43 04 587 A1 beschrieben. Hierbei handelt es sich um eine Leuchte, bei der die Lichtverteilungskurve (LVK) vom Benutzer verändert werden kann. Hierzu werden der Reflektor und die Lampe relativ zueinander verstellt. Dadurch wird die Lichtverteilungskurve zwischen engstrahlend oder punktförmig und breitstrahlend verstellt.A lamp of this type is described in DE 43 04 587 A1. This is what it is about is a luminaire in which the light distribution curve (LVK) by the user can be changed. For this purpose, the reflector and the lamp are relative adjusted to each other. This makes the light distribution curve between narrow beam or adjusted point and wide beam.

Grundsätzlich ist man hierbei bestrebt, den Lichtfleck auf der direkt angestrahlten Fläche gleich hell zu machen. Dies gelingt in der Praxis jedoch nur sehr beschränkt, denn wenn der Verstellweg zwischen Lampe und Reflektor zu groß wird, entsteht in der Mitte der Lichtverteilungskurve ein Licht-Einbruch, das heißt, es bildet sich ein dunkler Fleck.Basically, the aim is to have the light spot on the directly illuminated one To make the area equally bright. In practice, however, this is only possible to a very limited extent, because if the adjustment distance between lamp and reflector becomes too large, in In the middle of the light distribution curve, a light dip, that is, it is formed dark spot.

Die beigefügten Figuren 1 bis 3 zeigen Lichtverteilungskurven von bekannten Leuchten in der Blickrichtung quer zur Lichtausbreitungsrichtung der Leuchte. Fig. 1 zeigt eine engstrahlende Einstellung, Fig.2 eine geringfügig breitstrahlende Einstellung und Fig. 3 eine breitstrahlende Einstellung. Insbesondere Fig. 3 zeigt deutlich, daß die Lichtverteilung unzureichend ist.The attached Figures 1 to 3 show light distribution curves of known Luminaires looking in the direction perpendicular to the direction of light propagation. Fig. 1 shows a narrow beam setting, Fig.2 shows a slightly wide beam Setting and Fig. 3 is a wide beam setting. 3 shows in particular clearly that the light distribution is insufficient.

Aus der US 4,855,844 (beinhaltet auch die Merkmale des Oberbegriffs des 1 Anspruchs) ist ebenfalls eine Leuchte bekannt, deren Reflektor bezüglich der Lampe verstellbar ist. Der rund ausgebildete Reflektor besteht hierzu aus einem Kopfbereich und einander gegenüberliegenden Seitenbereichen, welche durch Segmente gebildet werden. Die Seitenbereiche sind durch eine Federkraft gegen seitliche Anschläge vorgespannt, so dass sie bei einer Relativbewegung zwischen den Seitenbereichen und den Anschlägen geschwenkt werden. Hierdurch wird der zwischen der Reflexionsfläche und der Mittelachse der Leuchte eingeschlossene Winkel verändert.From US 4,855,844 (also includes the features of the preamble of claim 1) a lamp is also known, the reflector with respect the lamp is adjustable. The round reflector consists of one Head area and opposite side areas, which by Segments are formed. The side areas are marked by a Spring force biased against side stops, so that they are at a Relative movement between the side areas and the stops pivoted become. As a result, the between the reflection surface and the central axis Luminaire included angles changed.

Eine Relativbewegung zwischen den Seitenbereichen und den Anschlägen wird bei der aus der US 4,855,884 bekannten Leuchte dadurch erhalten, daß der an einer Spindel gehaltene Reflektor mit Hilfe eines Motors gegenüber den fest angeordneten Anschlägen axial verschoben wird. Eine derartige Konstruktion ist allerdings verhältnismäßig aufwendig. A relative movement between the side areas and the stops is at the lamp known from US 4,855,884 obtained in that the one Spindle held reflector with the help of a motor opposite the fixed one Stops is moved axially. Such a construction is, however relatively expensive.

Der Erfindung liegt dementsprechend die Aufgabe zugrunde, bei einer Leuchte der oben geschilderten Art eine von Hand durchzuführende einfache Verstellung des Reflektor zu ermöglichen.The invention is accordingly based on the object in a lamp above described a simple manual adjustment of the Enable reflector.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.

Bei der erfindungsgemäßen Ausgestaltung ist der von der Mittelachse der Lampe und der Reflexionsfläche eingeschlossene Winkel veränderlich und einstellbar. Die Einstellbewegung kann eine seitliche Schwenk- bzw. Kippbewegung sein oder auch zugleich eine axiale Bewegung umfassen. Hierdurch läßt sich eine gleichmäßige Lichtverteilung im Bereich der Lichtverbreitungszone erreichen. Dies ist darauf zurückzuführen, daß aufgrund der bei einem Reflektor üblichen Abstände und Positionen von den zugehörigen Flächenbereichen der Reflexionsfläche und der Lampe sich bei einer erfindungsgemäßen Kippverstellung eine günstige Verteilung des Lichtes ergibt. Dabei läßt sich eine besonders günstige Lichtverteilung erreichen, wenn der Kopfbereich des Reflektors bezüglich des seitlichen Bereichs bei der Verstellung eine geringere oder keine Kippbewegung und/oder nur eine axiale Bewegung ausführt.In the embodiment according to the invention, that of the central axis of the lamp and the angle included in the reflecting surface is variable and adjustable. The Adjustment movement can be a lateral swivel or tilt movement or also at the same time include an axial movement. This allows a uniform Achieve light distribution in the area of the light distribution zone. This is on it attributed to that due to the usual distances and with a reflector Positions of the corresponding surface areas of the reflection surface and the Lamp a favorable distribution in a tilt adjustment according to the invention of light. This enables a particularly favorable light distribution reach if the head area of the reflector with respect to the lateral area at the adjustment a little or no tilting movement and / or only an axial Movement.

Ein einfaches Verstellen des Reflektors wird dadurch ermöglicht, daß der Reflektor - längs der Mittelachse der Lampe gesehen - eine runde Form aufweist und die Umfangswand des Reflektors wenigstens im Seitenbereich aus sich in der Licht-Ausbreitungsrichtung erstreckenden Segmenten besteht, die einander in Umfangsrichtung überlappen. Die Seitenbereiche sind dabei jeweils durch eine Federkraft gegen seitliche Anschläge vorgespannt, wobei die Anschläge durch einen Ring gebildet sind, an dessen Innenumfangsfläche die Segmente anliegen, und wobei der Ring um die Mittelachse der Lampe drehbar am Basisteil gelagert ist und ein Betätungsglied für die Verstellvorrichtung bildet. Durch ein einfaches Verdrehen des Rings kann somit der Reflektor auf einfache Weise manuell verstellt werden. A simple adjustment of the reflector is made possible by the fact that the reflector seen along the central axis of the lamp - has a round shape and the Circumferential wall of the reflector at least in the side area from itself in the direction of light propagation extending segments that are in each other Overlap circumferential direction. The side areas are each marked with a Spring force biased against side stops, the stops by a Ring are formed, on the inner circumferential surface of which the segments rest, and wherein the ring is rotatably mounted on the base part about the central axis of the lamp and a Actuator for the adjusting device forms. By simply turning the Rings can thus be easily adjusted manually.

In den Unteransprüchen sind Merkmale enthalten, die zu einfachen, kleinen und kostengünstigen Bauweisen führen und eine handhabungsfreundliche und schnelle Einstellung ermöglichen.The subclaims contain features that are too simple, small and inexpensive construction methods and a handling-friendly and fast Allow adjustment.

Nachfolgend werden die Erfindung und weitere durch sie erzielbare Vorteile anhand von bevorzugten Ausgestaltungen näher erläutert. Es zeigt

Fig. 4
eine erfindungsgemäße Leuchte im vertikalen Querschnitt;
Fig. 5
eine erfindungsgemäße Leuchte im vertikalen Querschnitt in perspektivischer Darstellung;
Fig. 6
die Leuchte nach Fig. 4 oder Fig. 5 in einer perspektivischen Unteransicht
Fig. 7
eine Lichtverteilungskurve einer erfindungsgemäßen Leuchte bei engstrahlender Einstellung;
Fig. 8
eine Lichtverteilungskurve der erfindungsgemäßen Leuchte bei weitstrahlender Einstellung.
The invention and further advantages which can be achieved by means of preferred configurations are explained in more detail below. It shows
Fig. 4
a lamp according to the invention in vertical cross section;
Fig. 5
a lamp according to the invention in vertical cross section in a perspective view;
Fig. 6
4 or FIG. 5 in a perspective bottom view
Fig. 7
a light distribution curve of a lamp according to the invention with narrow beam setting;
Fig. 8
a light distribution curve of the lamp according to the invention with wide beam setting.

Die allgemein mit 1 bezeichnete Leuchte umfaßt ein Basisteil 2, mit dem sie an bzw. in einem Haltesystem 3 gehalten ist, und das mittels einer Verstellvorrichtung 4 einen Reflektor 5 trägt, der durch die Verstellvorrichtung 4 verstellbar und in der jeweils eingestellten Position feststellbar ist. Im oberen Bereich des Reflektors 5 ist eine Lampe 6, hier eine Halogen-Lampe, mittels einer Fassung 7 lösbar gehalten, die parallel zur Mittelachse 8 des symmetrischen Reflektors 5 und der Lampe 6 unbeweglich an einem Querträger 9 gehalten ist, der am Basisteil 2 oder hier an der Verstellvorrichtung 4 befestigt ist.The lamp generally designated 1 comprises a base part 2, with which it on or in a holding system 3 is held, and the one by means of an adjusting device 4 Reflector 5, which is adjustable by the adjusting device 4 and in each set position can be determined. In the upper area of the reflector 5 there is a lamp 6, here a halogen lamp, held releasably by means of a socket 7, which is parallel to Central axis 8 of the symmetrical reflector 5 and the lamp 6 immovably on one Cross member 9 is held, on the base part 2 or here on the adjusting device 4th is attached.

Die Leuchte 1 dient beim vorliegenden Ausführungsbeispiel zur Beleuchtung verhältnismäßig kleiner Flächen oder Räume, z.B. zur Beleuchtung von Ausstellungsgegenständen in Ausstellungsräumen oder Museen. Um den Beleuchtungsraum an unterschiedliche Örtlichkeiten anpassen zu können, ist die Leuchte 1 durch eine weitere Verstellvorrichtung 11 quer zur Mittelachse 8 insbesondere durch Schwenken verstellbar und in der jeweiligen Verstellposition feststellbar gehalten. Die Verstellbewegung kann nur in einer Richtung, in zwei rechtwinklig zueinander verlaufenden Richtungen oder in allen Richtungen der vorhandenen, hier horizontalen Querebene E1 gerichtet sein. Dabei kann die Aufhängung pendelnd oder kardanisch sein. Im vorliegenden Fall ist die Leuchte 1 ein Strahler z.B. für einen Ausstellungsraum oder ein Museum, wobei das Basisteil 2 durch ein erstes Gelenk 12 um eine erste Querachse 12a schwenkbar mit einem Halter 13, hier in Form einer Halteplatte 13a, verbunden ist, und wobei der Halter 13 durch ein zweites Gelenk 14 um eine zur ersten rechtwinklig verlaufenden zweiten Querachse 14a schwenkbar mit einem Träger 15 verbunden ist, bei dem es sich bei der vorliegenden Ausgestaltung um ein Einbaugehäuse 15a oder einen z.B. durch ein Profil gebildeten Einbaugehäusekanal handeln kann, das bzw. der im Raum frei gehalten oder in einer Einbauöffnung einer Wand oder Decke einsetzbar und in üblicher Weise befestigbar ist. Vom zweiten Gelenk 14 ist nur das am Halter befestigte Gelenkteil 14b dargestellt, das sich bezüglich des ersten Gelenks 12 in der Längsrichtung des Einbaugehäusekanals 15a versetzt vorzugsweise außermittig, hier an der Oberseite der Halteplatte 13a befestigt ist. Das nicht dargestellte zweite Gelenkteil kann mittelbar oder unmittelbar am Träger 15 befestigt sein.The lamp 1 is used in the present embodiment for lighting relatively small areas or spaces, e.g. for lighting of Exhibition objects in exhibition rooms or museums. Around the lighting room To be able to adapt to different locations, the lamp 1 by another Adjustment device 11 can be adjusted transversely to the central axis 8, in particular by pivoting and held lockable in the respective adjustment position. The adjustment movement can only in one direction, in two directions perpendicular to each other or in all Directions of the existing, here horizontal transverse plane E1. It can the suspension may be swinging or gimbal. In the present case, the lamp 1 is on Spotlights e.g. for an exhibition room or a museum, whereby the base part 2 by a first joint 12 pivotable about a first transverse axis 12a with a holder 13, here in Form of a holding plate 13a, and wherein the holder 13 by a second Joint 14 about a second transverse axis 14a, which runs at right angles to the first is pivotally connected to a support 15, which is the present Design around a built-in housing 15a or e.g. formed by a profile Built-in housing channel can act, which is kept free in the room or in one Installation opening of a wall or ceiling can be used and fastened in the usual way. Of the second joint 14, only the joint part 14b fastened to the holder is shown with respect to the first joint 12 in the longitudinal direction of the installation housing duct 15a preferably offset off-center, is attached here to the top of the holding plate 13a. The second joint part, not shown, can be directly or indirectly on the carrier 15 be attached.

Wie insbesondere aus Fig. 5 zu entnehmen ist, ist die Leuchte 1 in einem runden Loch 16 der Halteplatte 13a schwenkbar gelagert, wobei sich die Halteplatte 13a etwa in halber Höhe der Leuchte 1 befindet. Das Basisteil 2 ist durch einen Basisring 2a gebildet, der sich etwa in der Höhe der Halteplatte 13a mit Bewegungsspiel im Loch 16 befindet. Das erste Gelenk 12 wird durch zwei vom Basisteil 2 diametral abstehende Gelenkzapfen 12b gebildet, die jeweils in ein am Halter 13 ausgebildetes Lagerauge 12c einfassen, das durch eine Mulde und eine den Gelenkzapfen 12b übergreifende Platte 12d ggf. mit Obermulde gebildet sein kann. Die Platte 12d kann mit einer so großen Spannung gegen den Gelenkzapfen 12b drücken, z.B. geschraubt sein, daß die Leuchte 1 durch manuelles Überdrücken zwar schwenkbar ist, jedoch gegen eine ungewollte Verstellung festgestellt ist. Die Lichtquelle 6a der Lampe 6 befindet sich in der Höhe der Gelenkachse 12a.As can be seen in particular from FIG. 5, the lamp 1 is in a round hole 16 the holding plate 13a is pivotally mounted, the holding plate 13a being approximately in half Height of the lamp 1 is. The base part 2 is formed by a base ring 2a, which is located approximately at the level of the holding plate 13a with play in the hole 16. The first Joint 12 is formed by two pivot pins 12b projecting diametrically from base part 2 formed, each encompassing a bearing eye 12c formed on the holder 13, which by a trough and a plate 12d overlapping the pivot pin 12b, optionally with an upper trough can be formed. The plate 12d can with such great tension against the Press pivot pin 12b, e.g. be screwed that the lamp 1 by manual Overpressing is pivotable, however, it is determined against an unwanted adjustment is. The light source 6a of the lamp 6 is located at the level of the hinge axis 12a.

Bei dem Reflektor 5 kann es sich um einen solchen mit einander gegenüberliegenden Wänden in Form von bezüglich der Mittelebene E2 spiegelbildlichen Profilen, insbesondere für längliche Leuchten, handeln, wie es z.B. bei Leuchtstoffröhren üblich ist. Prinzipiell ist ein solcher Reflektor 5 in Fig. 4 auch erkennbar.The reflector 5 can be one with opposite ones Walls in the form of profiles which are mirror images of the central plane E2, act in particular for elongated lights, such as is common with fluorescent tubes. In principle, such a reflector 5 can also be seen in FIG. 4.

Beim vorliegenden Ausführungsbeispiel sind die Leuchte 1 und der Reflektor 5 im horizontalen Querschnitt rund geformt, wobei es sich bei dem Strahler vorzugsweise um einen Kreuzstrahler handelt, bei dem ein wesentlicher Teil der von den einander gegenüberliegenden Reflexionsflächen oder hier von der runden Reflexionsfläche 5a reflektierten Strahlen S die Mittelachse 8 schneiden.In the present embodiment, the lamp 1 and the reflector 5 in horizontal cross-section shaped round, the radiator preferably being is a cross reflector, in which a substantial part of each other opposite reflection surfaces or here from the round reflection surface 5a reflected rays S intersect the central axis 8.

Bei beiden vorbeschriebenen Leuchten- oder Reflektor-Bauweisen ist die Verstellvorrichtung 4 so ausgebildet, daß der zwischen der Reflexionsfläche 5a und der Mittelachse 8 eingeschlossene Winkel W veränderlich ist. Hierbei findet ein Kippen der Reflektorwand 5b um eine Kippachse 17 statt, die bei Reflexionsflächen in Profilform sich in einer Querebene erstreckt und etwa in der Reflexionsfläche 5a liegt. Bei einer runden Leuchte 1 bzw. Reflektor 5 ist diese Kippachse 17 im wesentlichen eine Tangente. Während des Kippens muß die Kippachse 17 nicht ortsfest sein. Sie kann sich auch während des Kippvorgangs seitlich oder der Form der Reflektorwand 5b folgend verstellen. Bei der vorliegenden Ausgestaltung findet beim Kippen gleichzeitig eine vertikale Bewegung des Reflektors 5 statt, insbesondere in dessen oberen Endbereich.In both of the above-described luminaire or reflector designs, that is Adjustment device 4 designed so that the between the reflection surface 5a and Center axis 8 included angle W is variable. This will cause the Reflector wall 5b around a tilt axis 17, which is in the form of a profile with reflection surfaces extends in a transverse plane and lies approximately in the reflection surface 5a. With a round Luminaire 1 or reflector 5, this tilt axis 17 is essentially a tangent. During the tilting, the tilt axis 17 does not have to be stationary. You can too sideways or following the shape of the reflector wall 5b during the tilting process adjust. In the present embodiment, when tilting, there is a vertical movement of the reflector 5 takes place, in particular in its upper end region.

Die Verstellvorrichtung 4 weist einen parallel zur Mittelachse 8 wirksamen Bewegungsantrieb 18 für den Reflektor 5 mit einem Betätigungsglied 21 auf, das von der Abstrahlseite 19 Leuchte 1 her zugänglich ist. Das Betätigungsglied 21 wirkt durch ein Bewegungsänderungsgetriebe 22 auf einen Schieber 23, der in einer parallel zur Mittelachse 8 verlaufenden Führung 24 verschiebbar und mit dem oberen Bereich des Reflektors 5 verbunden ist.The adjusting device 4 has an effective one parallel to the central axis 8 Movement drive 18 for the reflector 5 with an actuator 21, which of the Beam side 19 light 1 is accessible here. The actuator 21 acts through Movement change gear 22 on a slide 23 which is in a parallel to the Center axis 8 extending guide 24 slidably and with the upper region of the Reflector 5 is connected.

Das Betätigungsglied 21 ist ein Drehring 21a, der am Innenumfang des Basisrings 2a frei drehbar gelagert ist, wobei er den Basisring 2a mit einem Flansch 21b untergreift und mit einem in einer Ringnut sitzenden Feder- oder Sprengring 25 übergreift, wodurch ein Drehlager gebildet ist. Für den manuellen Angriff weist der Drehring 21a vom Flansch 21b abstehende Angriffszapfen 21c auf. Der Innenumfang des Drehrings 21a ist gerundet oder dachförmig geformt und so groß bemessen, daß der Reflektor 5 mit seiner Außenseite an einer die Kippachse 17 bildenden Berührungslinie anliegt. Das der resultierenden Ausbreitungsrichtung A der Lichtstrahlen S abgewandte Ende des Drehrings 21a ist durch einen Hülsenabschnitt 21d gebildet, der innen die hohlzylindrische Führung 24 bildet, in der der Schieber 23 in Form einer Scheibe 23a und einer Führungshülse 23b verschiebbar gelagert ist. Zwischen dem Hülsenabschnitt 21d und dem Querträger 9, hier in Form einer Platte, erstrecken sich mehrere auf dem Umfang gleichmäßig verteilt angeordnete Distanzstücke 26, die durch Befestigungsschrauben 26a und sie umgebende Hülsen 26b für den Querträger 9 gebildet sein können. Zwischen den Distanzstücken 26 befinden sich Segmentfreiräume 27, durch die sich in den Schieber 24 fest eingesetzte Stifte 28 radial nach außen bis in den Bereich einer den Drehring 21a umgebenden Steuerhülse 29 erstrecken, die den Segmentfreiräumen 27 gegenüberliegend Segmentkurvenabschnitte 31 aufweist, an denen die Stifte 28 durch Federkraft oder hier aufgrund des vorhandenen Eigengewichts anliegen. Die Steuerhülse 29 ist auf dem Basisteil 2 befestigt.The actuator 21 is a rotating ring 21a, which is free on the inner circumference of the base ring 2a is rotatably supported, engaging under the base ring 2a with a flange 21b and with engages a spring or snap ring 25 seated in an annular groove, whereby a Pivot bearing is formed. For the manual attack, the rotating ring 21a points from the flange 21b projecting engagement pins 21c. The inner circumference of the rotating ring 21a is rounded or shaped roof-shaped and dimensioned so large that the reflector 5 with its outside abuts a line of contact forming the tilt axis 17. That of the resulting Direction of propagation A of the light beams S facing away from the end of the rotating ring 21a a sleeve section 21d is formed, which forms the hollow cylindrical guide 24 inside, in the slider 23 is displaceable in the form of a disk 23a and a guide sleeve 23b is stored. Between the sleeve portion 21d and the cross member 9, here in the form of a Plate, extend several arranged evenly distributed on the circumference Spacers 26, the by fastening screws 26a and surrounding sleeves 26b for the cross member 9 can be formed. Are located between the spacers 26 Segment clearances 27, through which pins 28 are inserted radially into the slider 24 outwards into the area of a control sleeve 29 surrounding the rotary ring 21a extend, the segment curve sections 31 lying opposite the segment free spaces 27 has, on which the pins 28 by spring force or here due to the existing Own weight. The control sleeve 29 is fastened on the base part 2.

Bei einem runden Reflektor 5 besteht dieser aus sich schuppenförmig überlappenden Segmenten 5c, die nur an ihren der Lampe 6 zugewandten Enden an einem Tragteil 32 befestigt , z.B. vernietet sind, s. Niet 33 in Fig.6. Das Tragteil 32 spannt die Segmente 5c mit ihren freien Enden radial nach außen gegen die Kippachse 17 vor und es ist vorzugsweise durch eine Federscheibe 32a gebildet, an der die Segmente 5c befestigt sind, und die Segmente 5c im vorbeschriebenen Sinn vorspannt. Die Federscheibe 32a kann konkav bzw. domförmig geformt sein und den Reflektor im Kopfbereich bilden oder von einem konkaven bzw. domförmigen Kopfreflektor 5d untergriffen sein. Das Tragteil 32 und der Kopfreflektor 5d sind am Rand eines Loches 34 befestigt, z.B. umgeschlagen, durch das sich die Lampe 6 in den oberen Bereich des Reflektors 5 erstreckt.In the case of a round reflector 5, this consists of overlapping scales Segments 5c, which are connected to a support part 32 only at their ends facing the lamp 6 attached, e.g. are riveted, s. Rivet 33 in Fig. 6. The support member 32 spans the segments 5c with its free ends radially outwards against the tilt axis 17 and it is preferably formed by a spring washer 32a to which the segments 5c are attached, and prestresses the segments 5c in the sense described above. The spring washer 32a can be concave or dome-shaped and form the reflector in the head area or from a concave or dome-shaped head reflector 5d. The support part 32 and the head reflector 5d are attached to the edge of a hole 34, e.g. transhipped, through which the lamp 6 extends into the upper region of the reflector 5.

Mit der Verstellvorrichtung 4 läßt sich der Reflektor 5 durch eine manuelle Bewegung des Betätigungsgliedes 21 axial verstellen und insgesamt (gerader profilierter Reflektor für längliche Leuchten) oder in seinem seitlichen äußeren, durch die Segmente 5c gebildeten Bereich kippen. Dabei lassen sich im vorhandenen Verstellbereich wahlweise Positionen einstellen und zwar in dem durch die beiden Stellungen gemäß Fig. 4 verdeutlichten Verstellbereich. Bei der in Fig. 4 links dargestellten Stellung befindet sich der Kopfbereich des Reflektors 5 in einer bezüglich der Ausbreitungseinrichtung A hinteren, hier oberen Stellung und der freie Rand des Reflektors 5 in einer seitlich nach innen versetzten Stellung. Bei der in Fig. 4 rechts dargestellten Stellung befindet sich der Kopfbereich des Reflektors 5 in einer bezüglich der Ausbreitungsrichtung A vorderen, hier unteren Stellung und der freie Rand des Reflektors 5 in einer seitlich äußeren Stellung. Die Verstellung läßt sich aufgrund des vorhandenen Kurventriebs mit den Segmentkurvenabschnitten 31 und des vorhandenen verhältnismäßig großen Wirkabstands der Angriffszapfen 21c leicht manuell durchführen. Die Drehmitnahme der Stifte 28 und des Schiebers 23 erfolgt dadurch, daß zugehörige Distanzstücke 26 gegen die Stifte 28 stoßen, um die Mittelachse 8 drehen und dabei auf den je nach Drehrichtung geneigt oder ansteigend verlaufenden Kurvenabschnitten 31 gehoben oder gesenkt werden. Dabei bilden der Drehring 21a, der Schieber 23 und der Reflektor 5 eine Dreheinheit. Der Kopfbereich des Reflektors 5, hier der Kopfreflektor 5d wird folglich längs der Mittelachse 8, hier vertikal verstellt. Aufgrund der von der Federscheibe 32a erzeugten Vorspannung liegen die durch die Segemente 5c gebildeten Seitenbereiche des Reflektors 5 der Vorspannung innen am Drehring 21a an. Während einer Bewegung des Kopfbereiches des Reflektors 5 in die Ausbreitungsrichtung A werden folglich die Seitenbereiche seitlich nach außen geschwenkt, wobei sie den größeren Abstand x einnehmen. Bei dieser Bewegung schwenken bzw. kippen die Seitenbereiche des Reflektors 5 an der zugehörigen Kippachse 17, wobei sie gleichzeitig daran gleiten. In der entgegen der Ausbreitungsrichtung A gerichteten Verstellposition sind die Seitenbereiche des Reflektors 5 dagegen nach innen geschwenkt, siehe Maß y.With the adjusting device 4, the reflector 5 can be moved by a manual movement of the Adjust actuator 21 axially and overall (straight profiled reflector for elongated lights) or in its lateral outer, formed by the segments 5c Tilt area. Positions can be selected in the existing adjustment range set in the two positions shown in FIG. 4 Adjustment. In the position shown on the left in FIG. 4, the head area is located of the reflector 5 in a rear, here upper with respect to the spreading device A. Position and the free edge of the reflector 5 in a laterally offset inwards Position. In the position shown on the right in FIG. 4, the head area of the Reflector 5 in a front, in this case lower position with respect to the direction of propagation A. and the free edge of the reflector 5 in a laterally outer position. The adjustment leaves due to the existing curve drive with the segment curve sections 31 and of the existing relatively large effective distance of the engagement pins 21c easily perform manually. The rotation of the pins 28 and the slider 23 takes place in that associated spacers 26 abut pins 28 about the central axis 8, turning on the inclined or rising depending on the direction of rotation Curve sections 31 are raised or lowered. The rotary ring 21a form the Slider 23 and the reflector 5 a rotating unit. The head area of the reflector 5, here the head reflector 5d is consequently adjusted along the central axis 8, here vertically. Due to the bias generated by the spring washer 32a are due to the Segments 5c formed side regions of the reflector 5 of the bias on the inside Rotating ring 21a. During a movement of the head region of the reflector 5 into the Direction of propagation A consequently becomes the side areas laterally outwards pivoted, taking the larger distance x. With this movement pivot or tilt the side areas of the reflector 5 on the associated tilt axis 17 while sliding on it at the same time. In the opposite direction of propagation A directed adjustment position, however, the side areas of the reflector 5 are inward pivoted, see dimension y.

Bei der vorliegenden Ausgestaltung bildet der Reflektor 5 zu beiden Seiten der Mittelebene E2 folglich den Kopfbereich, der parallel zur Mittelachse 8 bewegbar bzw. verstellbar ist und den Seitenbereich, der um seine Befestigungsstelle im Kopfbereich in einer rechtwinklig zur Mittelebene E2 stehenden Schwenkebene schwenkbar mit dem Kopfbereich verbunden ist und dabei gleichzeitig um diese Befestigungsstelle und um die zugehörige Kippachse 17 schwenkt. Das Spreizen der Seitenbereiche des Reflektors 5 auf das Maß x erfolgt selbsttätig aufgrund der Spannung der Federscheibe 32a, die die Seitenbereiche nach außen vorspannt. Diese Spannung sorgt auch dafür, daß der Schieber 23 mit den Stiften 28 gegen die Kurvenabschnitte 31 vorgespannt ist und somit von den Kurvenabschnitten 31 bei einer Verstellung in die Ausbreitungsrichtung A nicht abhebt.In the present embodiment, the reflector 5 forms on both sides of the central plane E2 consequently the head area, which is movable or adjustable parallel to the central axis 8 and the side area around its attachment point in the head area in one at right angles to the center plane E2 swivel plane with the Head area is connected and at the same time around this attachment point and around the associated tilt axis 17 pivots. The spreading of the side areas of the reflector 5 the dimension x takes place automatically due to the tension of the spring washer 32a, which Side areas biased outwards. This tension also ensures that the slide 23 is biased with the pins 28 against the curve sections 31 and thus by the Curve sections 31 does not stand out during an adjustment in the direction of propagation A.

Wie bereits erklärt, gelten die vorbeschriebenen Verstellbewegungen des Kopfbereiches und der Seitenbereiche des Reflektors 5 sowohl dann, wenn der Reflektor ein sich rechtwinklig zur Zeichnungsebene in Fig. 4 erstreckender profilartiger Körper ist also auch dann, wenn der Reflektor 5 eine bezüglich der Ebene E1 runde Form aufweist. Im ersten Fall bedarf es keiner Aufteilung der Seitenbereiche des Reflektors 5 in Lamellen, da die Seitenbereiche als einheitliche Wandteile verstellt werden können. Bei einer runden Form des Reflektors 5 bedarf es dagegen der Aufteilung der Seitenbereiche in einander überlappende Segmente 5c, so daß bei der während der Verstellung des Reflektors 5 stattfindenden Weitung und Kontraktion der runden Reflektor-Umfangswand keine Spalten entstehen. Aufgrund der durch die Federscheibe 32a hervorgerufenen Spreizung der Segmente ist deren dichte Anlage einander gewährleistet, so daß auch hier keine Spalten entstehen.As already explained, the adjustment movements of the head area described above apply and the side areas of the reflector 5 both when the reflector is a 4 is also a profile-like body extending at right angles to the plane of the drawing when the reflector 5 has a round shape with respect to the plane E1. In the first In this case, there is no need to divide the side areas of the reflector 5 into slats, since the Side areas can be adjusted as uniform wall parts. With a round shape the reflector 5, on the other hand, requires the division of the side areas into one another overlapping segments 5c, so that when the reflector 5 expansion and contraction of the round reflector peripheral wall no gaps arise. Due to the spread caused by the spring washer 32a Segments ensure their tight contact with each other, so that there are no gaps here either arise.

Beim vorliegenden Ausführungsbeispiel mit zwei relativ zu einander beweglichen Reflektorsystemen (Kopfreflektor 5d und Seitenbereiche oder runde Umfangswand mit Segmenten 5c) ergeben sich überlagerte Lichtverteilungskurven gemäß Fig. 7 und 8, wobei die Lichtverteilungskurve gemäß Fig. 7 einer engstrahlenden Einstellung und der großen Querschnittsabmessung y entspricht und die Lichtverteilungskurve gemäß Fig. 8 einer breitstrahlenden Einstellung und der kleineren Querschnittsabmessung x entspricht. Die in den Figuren 7 und 8 mit durchgezogenen Linien dargestellten Lichtverteilungsbereiche verdeutlichen die jeweilige vom Kopfreflektor 5d hervorgerufene Lichtverteilung. Die gestrichelt dargestellten Lichtverteilungsteilbereiche verdeutlichen die von der Umfangswand mit den Lamellen 5c des Reflektors hervorgerufenen Lichtverteilungsbereiche. Die strichpunktierten Lichtverteilungsbereiche verdeutlichen jeweils einen kombinierten, durch den Kopfreflektor 5d und die Umfangswand mit den Segementen 5c hervorgerufenen Lichtverteilungsbereich.In the present embodiment with two movable relative to each other Reflector systems (head reflector 5d and side areas or round peripheral wall with Segments 5c) result in superimposed light distribution curves according to FIGS. 7 and 8, the light distribution curve of FIG. 7 a narrow beam setting and the corresponds to large cross-sectional dimension y and the light distribution curve according to FIG. 8 corresponds to a wide beam setting and the smaller cross-sectional dimension x. Those shown in Figures 7 and 8 with solid lines Light distribution areas clarify the respective one caused by the head reflector 5d Light distribution. The light distribution partial areas shown in dashed lines illustrate the caused by the peripheral wall with the slats 5c of the reflector Light distribution areas. The dash-dotted light distribution areas clarify each a combined, through the head reflector 5d and the peripheral wall with the Segments 5c caused light distribution area.

Claims (11)

  1. Luminaire (1) having a base part (2) which carries a lamp (6) and a reflector (5), wherein
    a) the reflector (5) is adjustable by means of an adjustment device (4) into different positions with regard to the angle (W) included between its reflection surface (5a) and the middle axis (8) of the lamp (6), and is fixable in the respective adjusted position,
    b) the reflector (5) has a head region (5d) and side regions lying opposite one another, wherein the head region (5d) and the side regions are connected with one another, relatively adjustably, in a plane containing the middle axis (8),
    c) the head region (5) is held displaceably along the middle axis (8) of the lamp (6) and the side regions are held pivotably to the side,
    d) the side regions are in each case biased by means of a spring force against side stops (21c) and
    e) the reflector (5) - seen along the middle axis (8) of the lamp (6) - has a round form and the circumferential wall of the reflector (5), at least in the side region, is of segments (5c) extending in the light propagation direction (A), and the stops are formed by means of a ring (21a) on the inner circumferential surface of which the segments (5c) bear,
    characterized in that,
    the segments overlap one another in the circumferential direction, and in that the ring (21a) is mounted on the base part (2) rotatably around the middle axis (8) of the lamp (6) and forms an actuating member (21) for the adjustment device (4).
  2. Luminaire according to claim 1,
    characterized in that,
    the reflector (5) is adjustable steplessly.
  3. Luminaire according to claim 1 or 2,
    characterized in that,
    during the movement of the head region (5d) of the reflector (5) in the axial propagation direction (A) its side regions are pivoted to the side outwardly.
  4. Luminaire according to any preceding claim,
    characterized in that,
    the actuating member (21) for the adjustment device (4) is accessable from the emission side (19) of the luminaire (1).
  5. Luminaire according to any preceding claim,
    characterized in that,
    the side regions are connected by means of at least one spring element, in particular a spring plate (32a), with the head regions (5d) or a part mounted thereon.
  6. Luminaire according to any preceding claim,
    characterized in that,
    the segments (5c) overlap in the circumferential direction in the manner of fish scales.
  7. Luminaire according to any preceding claim,
    characterized in that,
    the segments (5c) extend as far as into the head region of the reflector (5).
  8. Luminaire according to any preceding claim,
    characterized in that,
    the head region is formed by means of a dome shaped head reflector (5d).
  9. Luminaire according to any preceding claim,
    characterized in that,
    the segments (5c) are separate parts, which are connected with the head region or with the head reflector (5d), e.g. by means of rivets.
  10. Luminaire according to any preceding claim,
    characterized in that,
    the ring (21a) forms a guide (24), directed along the middle axis (8) of the lamp (6), for a guide slider (23) carrying the head region (5d) of the reflector (5).
  11. Luminaire according to claim 10,
    characterized in that,
    between the ring (21a) and the slider (23) there is a cam drive connection and/or a rotary entrainment connection.
EP98106625A 1997-04-09 1998-04-09 Luminaire comprising an adjustable reflector Expired - Lifetime EP0870979B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19714662A DE19714662A1 (en) 1997-04-09 1997-04-09 Luminaire with an adjustable reflector
DE19714662 1997-04-09

Publications (3)

Publication Number Publication Date
EP0870979A2 EP0870979A2 (en) 1998-10-14
EP0870979A3 EP0870979A3 (en) 2000-01-05
EP0870979B1 true EP0870979B1 (en) 2004-10-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
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EP (1) EP0870979B1 (en)
AT (1) ATE280925T1 (en)
DE (2) DE19714662A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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Publication number Priority date Publication date Assignee Title
US7771086B2 (en) 2004-07-27 2010-08-10 Koninklijke Philips Electronics N.V. Lighting device comprising a lamp unit a reflector

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ATE280925T1 (en) 2004-11-15
DE19714662A1 (en) 1998-10-15
DE59812157D1 (en) 2004-12-02
EP0870979A3 (en) 2000-01-05
EP0870979A2 (en) 1998-10-14

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