EP2805104B1 - Workplace light - Google Patents

Workplace light Download PDF

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Publication number
EP2805104B1
EP2805104B1 EP13705908.5A EP13705908A EP2805104B1 EP 2805104 B1 EP2805104 B1 EP 2805104B1 EP 13705908 A EP13705908 A EP 13705908A EP 2805104 B1 EP2805104 B1 EP 2805104B1
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EP
European Patent Office
Prior art keywords
workplace
tubular
light
extruded profile
tubular segments
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Active
Application number
EP13705908.5A
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German (de)
French (fr)
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EP2805104A1 (en
Inventor
Steffen Rumberg
Rüdiger Kreckel
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Despar Systeme AG
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Despar Systeme AG
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Publication of EP2805104A1 publication Critical patent/EP2805104A1/en
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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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
    • F21V11/186—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides slidable
    • 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
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/068—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension from a stretched wire
    • 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
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/112—Fixing lighting devices to pendants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a workstation lamp for ceiling mounting.
  • a workplace lamp is from the DE 20 2010 017009 U1 known.
  • Well-known task lights for ceiling mounting have an elongated housing in which downwardly directed LED spotlights are mounted.
  • the housing can be attached directly or via cable suspensions to the ceiling.
  • a prismatic glass screen can be placed in front of the LED spotlights.
  • a disadvantage of the known work lights is that the light distribution is variable only in terms of the luminous intensity of the LED spotlight, but not in terms of the illuminated areas. Therefore, light reflections on screens and on monitor walls or glass surfaces can not be reliably avoided.
  • a workstation lamp for ceiling mounting which has a tubular housing in which downwardly directed LED spotlights are arranged.
  • the tubular housing has an inner core in the form of an upwardly and downwardly open extruded profile, which has two side legs with cylindrical outer surfaces.
  • the downwardly directed LED spotlights are recessed into the interior of the extruded profile, resulting in a clearly demarcated Light emission results, which allows a glare-free workplace lighting.
  • upwardly directed LED spotlights are also arranged so that the workplace is illuminated both by directly downwardly emitted light as well as indirectly by the light reflected from the ceiling.
  • the object of the invention is to provide a workstation lamp, in which the light emission downwards in a large beam angle is continuously variable.
  • the light output can be changed downwards in addition by turning two concentric Abdeckblenden around the lamp axis in a wide beam angle range continuously.
  • the concentric cover panels are each at one end in a fully cylindrical ring section, so that can be a cover at one end of the work lamp and rotate the other cover at the other end of the work lamp.
  • the size of the circular segment of the Abdeckblenden is chosen so that the light emission of the downwardly directed LED spotlights in can also be adjusted asymmetrically in a wide range.
  • the range of movement of the cover panels is limited so that the light emission of the upward LED spotlights is not covered in any Abblendwolf the Abdeckblenden.
  • FIG. 1 in perspective overall view and in the Figures 2 . 3 and 5 shown in a perspective single view workplace lamp 1 according to the invention is attached to a ceiling and comprises a tubular housing which an inner core in the form of an upwardly and downwardly open strand profile 20 with H-shaped cross-section ( Fig. 6 ) having.
  • a tubular housing which an inner core in the form of an upwardly and downwardly open strand profile 20 with H-shaped cross-section ( Fig. 6 ) having.
  • Inside the extruded profile (20) downwardly directed LED spotlights 8 are recessed installed, the light output is directed downwards against the working surface of a workplace.
  • the recessed installation of the downwardly directed radiator 8 results in a clearly delimited light emission, which allows glare-free workplace lighting.
  • 20 upward LED emitters 7 are arranged on the top of the extruded profile.
  • the extruded profile 20 has two side legs 21, 22 with cylindrically curved outer surfaces, which are shell-shaped surrounded by two outer cover plates in the form of tube segments (4, 5).
  • the two cylindrically curved side legs 21, 22 of the extruded profile 20 serve as support and sliding surfaces for the two outer tube segments 4 and 5.
  • the transverse leg 23 of the extruded profile 20 is arranged off-center of the H-profile and carries on its underside a lower light bar 8a on which according to Fig. 5 the LED spotlights 8 are arranged discretely distributed. Due to the eccentric arrangement of the transverse leg 23, the above-mentioned recessed installation of the downwardly directed LED spotlight 8 results in the extruded profile 20.
  • an upper light bar 7a is arranged, which according to the Figures 2 . 3 . 4 and 6 carries a plurality of discretely distributed LED emitters 7 whose light output up to the ceiling is directed.
  • the H-profile of the extruded profile 20 between the two legs 21, 22 sufficiently wide, upper and lower longitudinal gaps.
  • the pipe segments 4 and 5 (cover panels) are on the two cylindrically curved side legs 21, 22 of the extruded profile 20 about the longitudinal axis of the work lamp 1 independently rotatable about the lower longitudinal gap of the H-profile and thus the light emission of the LED spotlight 8 down dim.
  • the pipe segments 4 and 5 can be rotated symmetrically or asymmetrically with respect to the LED spotlights 8, so that the illuminated area on the work surface not only narrow or expand individually symmetrical to the lower longitudinal gap of the H-profile, but also asymmetrically with respect to lower longitudinal gap of the H-profile can be moved laterally.
  • the radius of curvature of the pipe segments 4 and 5 is dimensioned in each case so that even at their fully open aperture (as in Fig. 6 shown), the upper longitudinal gap of the H-profile of the extruded profile 20 remains completely open and thus the light emission of the upper LED emitter 7 is not dimmed.
  • the pipe segments 4 and 5 are each at one end in a fully cylindrical end portion over which the extruded profile 20 slidably encloses and is easy to grip and twist.
  • the pipe segment 4 and at the other end of the workstation lamp 1 are rotated.
  • To limit the rotational movement of the pipe segments 4 and 5 is in each tubular segment 4, 5 in the vicinity of the fully cylindrical end portion a radial annular slot 11a ( Fig. 4 ), which is penetrated by a stop pin 11 b.
  • the pipe segments 4, 5 can thus be rotated only within the limited by the associated annular slot 11 a radial region.
  • the stop pins 11 b are in the example of Fig.
  • each guide ring 6 is sufficiently wide to enclose both a portion of the fully cylindrical portion of one tube segment and the free end of the other tube segment.
  • the guide rings 6 are connected via the stop pins 11 b fixedly connected to the extruded profile 20, so that the pipe segments 4, 5 can rotate against the stationary guide rings 6.
  • the guide rings 6 are omitted to show the underlying radial annular slots 11 a.
  • the suspension of the tubular workstation lamp 1 on a ceiling rail 10 is carried out according to Fig. 1 about height-adjustable rope loops 2, the ropes are each attached to the bottom of a tab 9 of the work lamp 1, then run freely through a vertical hole in a counterweight 3, deflected by a roller, not shown at the ends of the ceiling rail 10 by 180 ° and be guided back down and finally attached to the counterweight 3.
  • the weight of the workstation lamp 1 is held in equilibrium at each altitude by the two counterweights 3, wherein the two counterweights 3 together correspond to the weight of the workstation lamp 1.
  • the supply of the workstation lamp 1 with electrical energy is carried out by a spiral cable 12, which is guided by the ceiling rail 10 to one end of the workstation lamp 1.
  • FIG. 1 shown attachment of the workstation light 1 via height-adjustable support cables 2 is only one of several mounting options and is only optional.
  • Essential for the attachment of the workstation lamp 1 to the ceiling is that both a light emission from the workstation lamp 1 up to the ceiling and a light exit of the workstation lamp 1 down to the work surface of the workplace.
  • the upper and lower LED emitters 7, 8 can be changed separately by dimming in their light intensity continuously, for example by means of a key unit, not shown, which may be located in the area of the room entrance or directly to the respective workstation.

Description

Die Erfindung bezieht sich auf eine Arbeitsplatzleuchte zur Deckenbefestigung. Eine derartige Arbeitsplatzleuchte ist aus der DE 20 2010 017009 U1 bekannt.The invention relates to a workstation lamp for ceiling mounting. Such a workplace lamp is from the DE 20 2010 017009 U1 known.

Allgemein bekannte Arbeitsplatzleuchten zur Deckenbefestigung weisen ein längliches Gehäuse auf, in welchem nach unten gerichtete LED-Strahler montiert sind. Das Gehäuse kann unmittelbar oder über Seilaufhängungen an der Raumdecke befestigt sein. Um Blendungen der Personen am Arbeitsplatz zu vermeiden, kann vor den LED-Strahlern ein Prismenglasgitter angebracht sein. Nachteilig an den bekannten Arbeitsplatzleuchten ist indessen, dass die Lichtverteilung nur hinsichtlich der Leuchtintensität der LED-Strahler, nicht aber hinsichtlich der ausgeleuchteten Flächen veränderbar ist. Lichtreflexionen auf Bildschirmen und auf Monitorwänden bzw. Glasflächen lassen sicht daher nicht zuverlässig vermeiden.Well-known task lights for ceiling mounting have an elongated housing in which downwardly directed LED spotlights are mounted. The housing can be attached directly or via cable suspensions to the ceiling. To avoid dazzling people at the workplace, a prismatic glass screen can be placed in front of the LED spotlights. However, a disadvantage of the known work lights is that the light distribution is variable only in terms of the luminous intensity of the LED spotlight, but not in terms of the illuminated areas. Therefore, light reflections on screens and on monitor walls or glass surfaces can not be reliably avoided.

Aus der DE 20 2010 017009 U1 ist eine Arbeitsplatzleuchte zur Deckenbefestigung bekannt, welche ein rohrförmiges Gehäuse aufweist, in welchem nach unten gerichtete LED-Strahler angeordnet sind. Das rohrförmige Gehäuse weist einen inneren Kern in Form eines nach oben und nach unten offenen Strangprofils auf, welches zwei Seitenschenkel mit zylindrischen Außenflächen aufweist. Die nach unten gerichteten LED-Strahler sind vertieft in das Innere des Strangprofils eingebaut, woraus sich ein klar abgegrenzter Lichtaustritt ergibt, welcher eine blendfreie Arbeitsplatzbeleuchtung ermöglicht. In dem Strangprofil sind ferner nach oben gerichtete LED-Strahler angeordnet, so dass der Arbeitsplatz sowohl durch direkt nach unten abgestrahltes Licht als auch indirekt durch das von der Raumdecke reflektierte Licht beleuchtet wird.From the DE 20 2010 017009 U1 a workstation lamp for ceiling mounting is known, which has a tubular housing in which downwardly directed LED spotlights are arranged. The tubular housing has an inner core in the form of an upwardly and downwardly open extruded profile, which has two side legs with cylindrical outer surfaces. The downwardly directed LED spotlights are recessed into the interior of the extruded profile, resulting in a clearly demarcated Light emission results, which allows a glare-free workplace lighting. In the extruded profile upwardly directed LED spotlights are also arranged so that the workplace is illuminated both by directly downwardly emitted light as well as indirectly by the light reflected from the ceiling.

Die Aufgabe der Erfindung besteht darin, eine Arbeitsplatzleuchte zu schaffen, bei welcher der Lichtaustritt nach unten in einem großen Abstrahlwinkel stufenlos veränderbar ist.The object of the invention is to provide a workstation lamp, in which the light emission downwards in a large beam angle is continuously variable.

Diese Aufgabe wird durch die im Anspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention defined in claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Arbeitsplatzleuchte ergeben sich aus den Unteransprüchen.Advantageous embodiments and further developments of the workplace lamp according to the invention will become apparent from the dependent claims.

Bei der erfindungsgemäßen Arbeitsplatzleuchte lässt sich der Lichtaustritt nach unten zusätzlich durch Drehen von zwei konzentrischen Abdeckblenden um die Leuchtenachse in einem großen Abstrahlwinkelbereich stufenlos verändern. Die konzentrischen Abdeckblenden gehen jeweils an einem Ende in einen vollzylindrischen Ringabschnitt über, so dass sich am einen Ende der Arbeitsleuchte die eine Abdeckblende und am anderen Ende der Arbeitsleuchte die andere Abdeckblende verdrehen lässt. Die Größe des Kreissegmentes der Abdeckblenden ist so gewählt, dass der Lichtaustritt der nach unten gerichteten LED-Strahler in einem weiten Bereich auch unsymmetrisch verstellt werden kann. Der Bewegungsbereich der Abdeckblenden wird so begrenzt, dass der Lichtaustritt der nach oben gerichteten LED-Strahler in keiner Abblendstellung der Abdeckblenden abgedeckt wird.In the workstation lamp according to the invention, the light output can be changed downwards in addition by turning two concentric Abdeckblenden around the lamp axis in a wide beam angle range continuously. The concentric cover panels are each at one end in a fully cylindrical ring section, so that can be a cover at one end of the work lamp and rotate the other cover at the other end of the work lamp. The size of the circular segment of the Abdeckblenden is chosen so that the light emission of the downwardly directed LED spotlights in can also be adjusted asymmetrically in a wide range. The range of movement of the cover panels is limited so that the light emission of the upward LED spotlights is not covered in any Abblendstellung the Abdeckblenden.

Die Erfindung wird nachstehend an Hand von Zeichnungen näher erläutert. Es zeigt:

Figur 1
eine perspektivische Gesamtansicht einer Arbeitsplatzleuchte nach der Erfindung, die über höhenverstellbare Seilaufhängungen an einer Deckenschiene befestigt ist;
Figur 2
eine perspektivische Ansicht der Oberseite der Arbeitsplatzleuchte nach Fig. 1;
Figur 3
eine perspektivische Ansicht der Arbeitsplatzleuchte nach Fig. 2 mit weggelassenen Führungsringen an den Enden;
Figur 4
eine vergrößerte, perspektivische Ansicht des rechten Endes der in Fig. 3 dargestellten Arbeitsplatzleuchte;
Figur 5
eine perspektivische Ansicht der Unterseite der Arbeitsplatzleuchte nach Fig. 1, und
Figur 6
eine geschnittene, perspektivische Ansicht der Arbeitsplatzleuchte nach Fig. 1.
The invention is explained below with reference to drawings. It shows:
FIG. 1
an overall perspective view of a workplace lamp according to the invention, which is attached via height-adjustable cable suspensions to a ceiling rail;
FIG. 2
a perspective view of the top of the workplace lamp after Fig. 1 ;
FIG. 3
a perspective view of the workplace lamp after Fig. 2 with omitted guide rings at the ends;
FIG. 4
an enlarged, perspective view of the right end of in Fig. 3 illustrated workplace lamp;
FIG. 5
a perspective view of the bottom of the workplace lamp after Fig. 1 , and
FIG. 6
a cut, perspective view of the workplace lamp after Fig. 1 ,

Die in Figur 1 in perspektivischer Gesamtansicht und in den Figuren 2, 3 und 5 in perspektivischer Einzelansicht dargestellte Arbeitsplatzleuchte 1 nach der Erfindung ist an einer Raumdecke befestigt und umfasst ein rohrförmiges Gehäuse, das einem inneren Kern in Form eines nach oben und unten offenen Strang profils 20 mit H-förmigem Querschnitt (Fig. 6) aufweist. Im Inneren des Strangprofils (20) sind nach unten gerichtete LED-Strahler 8 vertieft eingebaut, deren Lichtaustritt nach unten gegen die Arbeitsfläche eines Arbeitsplatzes gerichtet ist. Durch den vertieften Einbau der nach unten gerichteten Strahler 8 ergibt sich ein klar abgegrenzter Lichtaustritt, welcher eine blendfreie Arbeitsplatzbeleuchtung ermöglicht. Ferner sind auf der Oberseite des Strangprofils 20 nach oben gerichtete LED-Strahler 7 angeordnet. Das Strangprofil 20 weist zwei Seitenschenkel 21, 22 mit zylindrisch gekrümmten Außenflächen auf, welche schalenförmig von zwei äußeren Abdeckblenden in Form von Rohrsegmenten (4, 5) umgeben sind. Die beiden zylindrisch gekrümmten Seitenschenkel 21, 22 des Strangprofils 20 dienen dabei als Auflage- und Gleitflächen für die zwei äußeren Rohrsegmente 4 und 5. Der Querschenkel 23 des Strangprofils 20 ist außermittig von dem H-Profil angeordnet und trägt auf seiner Unterseite eine untere Lichtleiste 8a, auf welcher gemäß Fig. 5 die LED-Strahler 8 diskret verteilt angeordnet sind. Durch die außermittige Anordnung des Querschenkels 23 ergibt sich der bereits erwähnte vertiefte Einbau der nach unten gerichteten LED-Strahler 8 in dem Strangprofil 20. Oberhalb des Querschenkels 23 ist eine obere Lichtleiste 7a angeordnet, welche gemäß den Figuren 2, 3, 4 und 6 eine Vielzahl von diskret verteilten LED-Strahlern 7 trägt, deren Lichtaustritt nach oben zur Raumdecke gerichtet ist. Für den Lichtaustritt aus den LED-Strahlern 7 und 8 nach unten bzw. oben weist das H-Profil des Strangprofils 20 zwischen den beiden Schenkeln 21, 22 ausreichend breite, obere und untere Längsspalte auf. Die Rohrsegmente 4 und 5 (Abdeckblenden) sind auf den beiden zylindrisch gekrümmten Seitenschenkeln 21, 22 des Strangprofils 20 um die Längsachse der Arbeitsleuchte 1 unabhängig voneinander drehbar, um den unteren Längsspalt des H-Profils und damit den Lichtaustritt der LED-Strahler 8 nach unten abzublenden. Dabei können die Rohrsegmente 4 und 5 symmetrisch oder unsymmetrisch bezüglich der LED-Strahler 8 gedreht werden, so dass sich die ausgeleuchtete Fläche auf der Arbeitsfläche nicht nur symmetrisch zu dem unteren Längsspalt des H-Profils individuell verengen oder erweitern, sondern sich auch unsymmetrisch bezüglich des unteren Längsspaltes des H-Profils seitlich verschieben lässt. Der Krümmungsradius der Rohrsegmente 4 und 5 ist in jedem Falle so bemessen, dass auch bei ihrer vollständig geöffneten Blendenstellung (wie in Fig. 6 gezeigt) der obere Längsspalt des H-Profils des Strangprofils 20 vollständig offen bleibt und damit der Lichtaustritt der oberen LED-Strahler 7 nicht abgeblendet wird.In the FIG. 1 in perspective overall view and in the Figures 2 . 3 and 5 shown in a perspective single view workplace lamp 1 according to the invention is attached to a ceiling and comprises a tubular housing which an inner core in the form of an upwardly and downwardly open strand profile 20 with H-shaped cross-section ( Fig. 6 ) having. Inside the extruded profile (20) downwardly directed LED spotlights 8 are recessed installed, the light output is directed downwards against the working surface of a workplace. The recessed installation of the downwardly directed radiator 8 results in a clearly delimited light emission, which allows glare-free workplace lighting. Furthermore, 20 upward LED emitters 7 are arranged on the top of the extruded profile. The extruded profile 20 has two side legs 21, 22 with cylindrically curved outer surfaces, which are shell-shaped surrounded by two outer cover plates in the form of tube segments (4, 5). The two cylindrically curved side legs 21, 22 of the extruded profile 20 serve as support and sliding surfaces for the two outer tube segments 4 and 5. The transverse leg 23 of the extruded profile 20 is arranged off-center of the H-profile and carries on its underside a lower light bar 8a on which according to Fig. 5 the LED spotlights 8 are arranged discretely distributed. Due to the eccentric arrangement of the transverse leg 23, the above-mentioned recessed installation of the downwardly directed LED spotlight 8 results in the extruded profile 20. Above the transverse leg 23, an upper light bar 7a is arranged, which according to the Figures 2 . 3 . 4 and 6 carries a plurality of discretely distributed LED emitters 7 whose light output up to the ceiling is directed. For the light emission from the LED emitters 7 and 8 down or above, the H-profile of the extruded profile 20 between the two legs 21, 22 sufficiently wide, upper and lower longitudinal gaps. The pipe segments 4 and 5 (cover panels) are on the two cylindrically curved side legs 21, 22 of the extruded profile 20 about the longitudinal axis of the work lamp 1 independently rotatable about the lower longitudinal gap of the H-profile and thus the light emission of the LED spotlight 8 down dim. In this case, the pipe segments 4 and 5 can be rotated symmetrically or asymmetrically with respect to the LED spotlights 8, so that the illuminated area on the work surface not only narrow or expand individually symmetrical to the lower longitudinal gap of the H-profile, but also asymmetrically with respect to lower longitudinal gap of the H-profile can be moved laterally. The radius of curvature of the pipe segments 4 and 5 is dimensioned in each case so that even at their fully open aperture (as in Fig. 6 shown), the upper longitudinal gap of the H-profile of the extruded profile 20 remains completely open and thus the light emission of the upper LED emitter 7 is not dimmed.

Wie die Figuren 1 bis 5 zeigen, gehen die Rohrsegmente 4 und 5 jeweils an einem Ende in einen vollzylindrischen Endabschnitt über, der das Strangprofil 20 gleitend umschließt und einfach zu greifen und zu verdrehen ist. Damit kann an dem rechten Ende der Arbeitsplatzleuchte 1 das Rohrsegment 4 und an dem anderen Ende der Arbeitsplatzleuchte 1 das Rohrsegment 5 verdreht werden. Zur Begrenzung der Drehbewegung der Rohrsegmente 4 und 5 ist in jedem Rohrsegment 4, 5 in der Nähe des vollzylindrischen Endabschnitts ein radialer Ringschlitz 11a (Fig. 4) vorgesehen, der von einem Anschlagstift 11 b durchsetzt wird. Die Rohrsegmente 4, 5 können damit nur innerhalb des von dem zugeordneten Ringschlitz 11a begrenzten Radialbereichs verdreht werden. Die Anschlagstifte 11 b sind im Beispielsfalle von Fig. 4 in das Strangprofil 20 von außen her eingeschraubt. Zur Lagestabilisierung der Rohrsegmente 4, 5 sind im Bereich der Enden der Arbeitsplatzleuchte 1 zwei Führungsringe 6 (Figuren 1, 2 und 5) vorgesehen. Jeder Führungsring 6 ist ausreichend breit ausgebildet, um sowohl einen Teil des vollzylindrischen Abschnitts des einen Rohrsegments als auch das freie Ende des anderen Rohrsegmentes zu umschließen. Durch die Umschließung des freien Endes jedes Rohrsegmentes 4, 5 durch einen Führungsring 6 wird gewährleistet, dass die freien Enden der Rohrsegmente 4, 5 von der Arbeitsplatzleuchte 1 nicht wegfedern können. Die Führungsringe 6 sind über die Anschlagstifte 11 b ortsfest mit dem Strangprofil 20 verbunden, so dass sich die Rohrsegmente 4, 5 gegen die ortsfesten Führungsringe 6 drehen können. In den Figuren 3 und 4 sind die Führungsringe 6 zur Darstellung der darunter befindlichen radialen Ringschlitze 11a weggelassen.As the FIGS. 1 to 5 show, the pipe segments 4 and 5 are each at one end in a fully cylindrical end portion over which the extruded profile 20 slidably encloses and is easy to grip and twist. Thus, at the right end of the workstation lamp 1, the pipe segment 4 and at the other end of the workstation lamp 1, the pipe segment 5 are rotated. To limit the rotational movement of the pipe segments 4 and 5 is in each tubular segment 4, 5 in the vicinity of the fully cylindrical end portion a radial annular slot 11a ( Fig. 4 ), which is penetrated by a stop pin 11 b. The pipe segments 4, 5 can thus be rotated only within the limited by the associated annular slot 11 a radial region. The stop pins 11 b are in the example of Fig. 4 screwed into the extruded profile 20 from the outside. To stabilize the position of the pipe segments 4, 5 are in the region of the ends of the workstation lamp 1, two guide rings 6 ( FIGS. 1 . 2 and 5 ) intended. Each guide ring 6 is sufficiently wide to enclose both a portion of the fully cylindrical portion of one tube segment and the free end of the other tube segment. By the enclosure of the free end of each pipe segment 4, 5 by a guide ring 6 ensures that the free ends of the pipe segments 4, 5 can not deflect away from the workstation light 1. The guide rings 6 are connected via the stop pins 11 b fixedly connected to the extruded profile 20, so that the pipe segments 4, 5 can rotate against the stationary guide rings 6. In the Figures 3 and 4 the guide rings 6 are omitted to show the underlying radial annular slots 11 a.

Die Aufhängung der rohrförmigen Arbeitsplatzleuchte 1 an einer Deckenschiene 10 erfolgt gemäß Fig. 1 über höhenverstellbare Seilschlaufen 2, deren Seile jeweils unten an einer Lasche 9 der Arbeitsplatzleuchte 1 befestigt sind, dann frei durch eine senkrechte Bohrung in einem Gegengewicht 3 laufen, über eine nicht gezeigte Rolle an den Enden der Deckenschiene 10 um 180° umgelenkt und wieder nach unten geführt werden und schließlich an dem Gegengewicht 3 befestigt sind. Das Gewicht der Arbeitsplatzleuchte 1 wird in jeder Höhenlage durch die beiden Gegengewichte 3 im Gleichgewicht gehalten, wobei die beiden Gegengewichte 3 zusammen dem Gewicht der Arbeitsplatzleuchte 1 entsprechen. Durch die freie Hindurchführung der Seile der Seilschlaufen 2 jeweils eine senkrechte Bohrung in den Gegengewichten 3 wird verhindert, dass die Gegengewichte 3 bei einer ungewollten Berührung seitlich ausschwingen können. Die Versorgung der Arbeitsplatzleuchte 1 mit elektrischer Energie erfolgt durch ein Spiralkabel 12, das von der Deckenschiene 10 zu einem Ende der Arbeitsplatzleuchte 1 geführt ist.The suspension of the tubular workstation lamp 1 on a ceiling rail 10 is carried out according to Fig. 1 about height-adjustable rope loops 2, the ropes are each attached to the bottom of a tab 9 of the work lamp 1, then run freely through a vertical hole in a counterweight 3, deflected by a roller, not shown at the ends of the ceiling rail 10 by 180 ° and be guided back down and finally attached to the counterweight 3. The weight of the workstation lamp 1 is held in equilibrium at each altitude by the two counterweights 3, wherein the two counterweights 3 together correspond to the weight of the workstation lamp 1. By the free passage of the ropes of the rope loops 2 each have a vertical bore in the counterweights 3 prevents the counterweights 3 can swing out laterally in an unwanted contact. The supply of the workstation lamp 1 with electrical energy is carried out by a spiral cable 12, which is guided by the ceiling rail 10 to one end of the workstation lamp 1.

Es versteht sich, dass die in Figur 1 gezeigte Befestigung der Arbeitsplatzleuchte 1 über höhenverstellbare Tragseile 2 nur eine von mehreren Befestigungsmöglichkeiten darstellt und lediglich optional ist. Wesentlich für die Befestigung der Arbeitsplatzleuchte 1 an der Raumdecke ist, dass sowohl ein Lichtaustritt aus der Arbeitsplatzleuchte 1 nach oben zur Decke als auch ein Lichtaustritt der Arbeitsplatzleuchte 1 nach unten zur Arbeitsfläche des Arbeitsplatzes erfolgt.It is understood that in FIG. 1 shown attachment of the workstation light 1 via height-adjustable support cables 2 is only one of several mounting options and is only optional. Essential for the attachment of the workstation lamp 1 to the ceiling is that both a light emission from the workstation lamp 1 up to the ceiling and a light exit of the workstation lamp 1 down to the work surface of the workplace.

Die oberen und unteren LED-Strahler 7, 8 können getrennt voneinander durch Dimmen in ihrer Lichtintensität stufenlos verändert werden, beispielsweise mit Hilfe einer nicht gezeigten Tasteneinheit, die im Bereich des Raumeingangs oder direkt an dem jeweiligen Arbeitsplatz angeordnet sein kann.The upper and lower LED emitters 7, 8 can be changed separately by dimming in their light intensity continuously, for example by means of a key unit, not shown, which may be located in the area of the room entrance or directly to the respective workstation.

Claims (6)

  1. Ceiling-mounted workplace light having a tubular housing in which downward-directed LED spotlights (8) are disposed, wherein said tubular housing has an inner core in the form of an extruded profile (20; Fig. 6) open towards the top and the bottom which has two lateral legs (21, 22) with cylindrical outer surfaces, said downward-directed LED spotlights (8) being further installed in a recessed manner in the interior of the extruded profile (20), and said extruded profile (20) also having upward-directed spotlights (7) disposed therein, characterised in that the extruded profile (20) is surrounded in the manner of a shell by two outer covering shades in the form of tubular segments (4, 5), that said two tubular segments (4, 5) can be rotated concentrically about the axis of the light for continuous variation of the beam angle range of the downward-directed LED spotlights (8), that the size of the circular segment of each of said tubular segments (4, 5) is selected such that the light aperture of the downward-directed spotlights can be adjusted over a wide range, and that the range of movement of said tubular segments (4, 5) is limited such that the upward-directed LED spotlights are not covered.
  2. Workplace light according to claim 1, characterised in that a transverse leg (23) of said H-profile-shaped extruded profile (20) is off-centred from the H-profile and carries a bottom light strip (8a) at its underside on which the downward-directed LED spotlights (8) are discretely distributed, wherein the off-centre arrangement of said transverse leg (23) results in the recessed integration of the downward-directed LED spotlights in the extruded profile (20).
  3. Workplace light according to claim 1 or 2, characterised in that said tubular segments (4, 5) each transition into a fully cylindrical end section at one end such that at one end of the workplace light one tubular segment is rotatable and on the other end of the workplace light the other tubular segment is rotatable.
  4. Workplace light according to claim 2 or 3, characterised in that, to limit the range of movement of the tubular segments (4, 5) in the vicinity of the fully cylindrical end section of each of the tubular segments (4, 5), it is provided with a radial annular slot 11a (Fig. 4) with a stop pin (11 b) extending therethrough.
  5. Workplace light according to claim 4, characterised in that, to stabilise the position of said tubular segments (4, 5), it is provided with guide rings (6), wherein each guide ring (6) is formed sufficiently wide to enclose both a portion of the fully cylindrical section of one of the tubular segments and the free end of the other tubular segment, and that said guide rings (6) are connected to the extruded profile (20) via said stop pins (11b) in a stationary manner such that the tubular segments (4, 5) can be rotated against the stationary guide rings (6).
  6. Workplace light according to any one of claims 1 to 5, characterised in that, to suspend the tubular workplace light (1) in a ceiling rail (10), it is provided with height-adjustable cable loops (2) the cables of which are each fastened to a joining plate (9) of the workplace light (1) at the bottom, then freely extend through a vertical hole in a counterweight (3), are deflected by a roller (not shown) in the ceiling rail (10) by 180° and are directed back down and finally fastened to the counterweight (3), said two counterweights (3) together matching the weight of the workplace light (1) such that the weight of the workplace light (1) is kept in balance by said two counterweights (3) at any height.
EP13705908.5A 2012-01-20 2013-01-18 Workplace light Active EP2805104B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012005853U DE202012005853U1 (en) 2012-01-20 2012-01-20 Workplace light
PCT/EP2013/000156 WO2013107652A1 (en) 2012-01-20 2013-01-18 Workplace light

Publications (2)

Publication Number Publication Date
EP2805104A1 EP2805104A1 (en) 2014-11-26
EP2805104B1 true EP2805104B1 (en) 2016-04-27

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EP13705908.5A Active EP2805104B1 (en) 2012-01-20 2013-01-18 Workplace light

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EP (1) EP2805104B1 (en)
DE (1) DE202012005853U1 (en)
WO (1) WO2013107652A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014100576U1 (en) * 2014-02-10 2015-05-12 Zumtobel Lighting Gmbh Elongated pendant light
AT14529U1 (en) * 2014-05-19 2015-12-15 Oe Tronic Handels Gmbh lighting system
USD834740S1 (en) 2017-09-29 2018-11-27 Pt. Ho Wah Genting Worklight
DE102021126244A1 (en) 2021-08-13 2023-02-16 SP3 Schurer Projekte Prototypen Produkte GmbH task light
CN114562687B (en) * 2022-03-15 2024-01-30 广东迈新照明科技有限公司 LED lamp capable of avoiding direct irradiation of strong light to eyes based on light collection

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954134A1 (en) * 1999-11-11 2001-05-23 Andreas Toeteberg Electric lamp with adjustable light output uses synchronous or asynchronous adjustment of at least 2 reflectors for providing symmetrical or angled light beams
US7207698B2 (en) * 2004-03-30 2007-04-24 Irwin Kotovsky Method and apparatus for lighting involving reflectors
DE202010017009U1 (en) * 2010-12-23 2011-02-24 Fkb Gmbh Stableuchte

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WO2013107652A1 (en) 2013-07-25
EP2805104A1 (en) 2014-11-26
DE202012005853U1 (en) 2012-06-27

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