EP1848922B1 - Lampe a reflecteur, a caracteristique d'emission lumineuse variable - Google Patents

Lampe a reflecteur, a caracteristique d'emission lumineuse variable Download PDF

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

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source

Definitions

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

Landscapes

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

Claims (10)

  1. Lampe à réflecteur (40) avec une douille (13) pour une source de lumière (14) ainsi qu'un réflecteur (41) formant une ouverture de sortie de lumière (42) et entourant au moins en partie la douille (13) pour concentrer la lumière émise par la source de lumière (14),
    la disposition de la douille (13) par rapport au réflecteur (41) pouvant être modifiée dans le sens de rayonnement de la lumière,
    le réflecteur (41) étant divisé en un réflecteur de tête (5) entourant la douille (13) ainsi qu'en un réflecteur principal (11) formant l'ouverture de rayonnement de lumière (42) et contigu dans le sens de rayonnement de la lumière au réflecteur de tête (5), d'un côté la douille (13) pouvant être réglée par rapport aux deux parties de réflecteur (5, 11) et de l'autre la disposition des deux parties de réflecteur (5, 11) pouvant être modifiée l'une par rapport à l'autre vu dans le sens de rayonnement de la lumière,
    caractérisée en ce
    qu'un réglage de la douille (13) est couplé à un réglage simultané d'une des deux parties de réflecteur (5, 11).
  2. Lampe à réflecteur selon la revendication 1,
    caractérisée par
    un dispositif de réglage pour le réglage simultané de la douille (13) et de la partie de réflecteur (5, 11) mobile.
  3. Lampe à réflecteur selon la revendication 2,
    caractérisée en ce
    que le dispositif de réglage présente un élément de réglage (6, 29) rotatif qui est couplé à la douille (13) ainsi qu'à la partie de réflecteur (5, 11) mobile.
  4. Lampe à réflecteur selon la revendication 3,
    caractérisée en ce
    que l'élément de réglage est formé par un disque d'excentrique (6) qui présente des portions de trajectoire (17a, 17b) pour des parties de guidage (9, 15) reliées à la douille (13) ainsi qu'à la partie de réflecteur (5, 11) mobile.
  5. Lampe à réflecteur selon la revendication 4,
    caractérisée en ce
    que le disque d'excentrique (6) est rotatif autour d'un axe (7) disposé perpendiculairement au sens de rayonnement de la lumière.
  6. Lampe à réflecteur selon la revendication 3,
    caractérisée en ce
    que l'élément de réglage est formé par un anneau rotatif (29) qui présente deux voies de guidage (30a, 30b) réalisées comme des cavités qui coopèrent avec des goupilles de guidage (27, 28) reliées à la douille (13) ainsi qu'à la partie de réflecteur (5, 11) mobile.
  7. Lampe à réflecteur selon la revendication 6,
    caractérisée en ce
    que l'anneau rotatif (29) est rotatif autour d'un axe disposé parallèlement au sens de rayonnement de la lumière.
  8. Lampe à réflecteur selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que le réflecteur principal (11) est disposé fixement dans un boîtier de lampe ou est relié fixement à un boîtier de lampe.
  9. Lampe à réflecteur selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que le réflecteur de tête (5) est configuré en forme de coque et le réflecteur principal (11) est formé par un anneau de réflecteur.
  10. Lampe à réflecteur selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que le réflecteur de tête (5) et le réflecteur principal (11) sont disposés se chevauchant en principe dans le sens de rayonnement de la lumière.
EP06706741A 2005-02-17 2006-02-08 Lampe a reflecteur, a caracteristique d'emission lumineuse variable Not-in-force EP1848922B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007348A DE102005007348A1 (de) 2005-02-17 2005-02-17 Strahlerleuchte mit variabler Lichtabstrahlcharakteristik
PCT/EP2006/001101 WO2006087126A1 (fr) 2005-02-17 2006-02-08 Lampe a reflecteur, a caracteristique d'emission lumineuse variable

Publications (2)

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

Family

ID=36190735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706741A Not-in-force EP1848922B1 (fr) 2005-02-17 2006-02-08 Lampe a reflecteur, a caracteristique d'emission lumineuse variable

Country Status (4)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2438637A (en) * 2006-05-31 2007-12-05 Jacob Dyson Active lighting system having automatically changing light effect.
DE102006047837A1 (de) * 2006-10-10 2008-04-17 Volkswagen Ag Scheinwerfer für ein Fahrzeug mit einer Tagfahrlichtanordnung
ATE489836T1 (de) 2007-01-22 2010-12-15 Osram Gmbh Verfahren zum steuern einer halbbrückenschaltung und entsprechende halbbrückenschaltung
US8118451B2 (en) 2008-03-13 2012-02-21 Fraen Corporation Reflective variable spot size lighting devices and systems
WO2021108201A1 (fr) * 2019-11-26 2021-06-03 Philip Gotthelf Installation d'éclairage à induction magnétique réglable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729065A (en) * 1987-04-24 1988-03-01 Arriflex Corporation Photography light
US4855884A (en) * 1987-12-02 1989-08-08 Morpheus Lights, Inc. Variable beamwidth stage light
DE4016531A1 (de) * 1990-05-22 1991-11-28 Trilux Lenze Gmbh & Co Kg Lichtstrahler
DE4121576C2 (de) * 1991-06-29 1994-03-17 Zumtobel Licht Leuchte mit verstellbarer Lampe
WO2001036871A1 (fr) * 1999-11-18 2001-05-25 Morpheus Technologies, Llc Projecteur lumineux

Also Published As

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

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