EP1774221A1

EP1774221A1 - Lamp comprising a housing and an adjustable emitter

Info

Publication number: EP1774221A1
Application number: EP05784110A
Authority: EP
Inventors: Rod Dixon
Original assignee: Zumtobel Lighting GmbH Germany
Current assignee: ZUMTOBEL LIGHTING GmbH
Priority date: 2004-08-06
Filing date: 2005-08-05
Publication date: 2007-04-18
Anticipated expiration: 2025-08-05
Also published as: CN100587328C; US7857492B2; AU2005270370A1; DE102004038599A1; AU2005270370B2; US20080247181A1; DE502005010718D1; CN101002052A; WO2006015821A1; ATE492772T1; EP1774221B1

Abstract

The invention relates to a luminaire (1) having a luminaire housing (2) and an adjustable spotlight arrangement (10). In order to achieve a movement of the spotlight arrangement (10) which is dependent in two degrees of freedom on one another, the spotlight arrangement (10) is held displaceably in a displacement direction (5b) of the luminaire housing (2), and there is provided in the luminaire housing (2) a pivot guide slot member (14), by means of which upon displacement in the displacement direction the spotlight arrangement (10) is compulsorily and reproducibly pivoted.

Description

Luminaire with a housing and an adjustable spotlight

The invention relates to a luminaire according to the preamble of claim 1.

In a luminaire of this type, it is possible to adjust the adjustable radiator so that the main emission is directed to a specific portion of the existing adjustment. It is thus possible to illuminate only this sub-area or mainly this sub-area. Such a luminaire is thus suitable for highlighting the subarea in the existing space by illumination, e.g. for decorative reasons or to present in the sub-area objects, e.g. a picture or device or sign, to illuminate and improve its visibility. A luminaire of this type is therefore also excellently suitable for an exhibition space or a gallery or a museum in order to visually highlight at least one object arranged in the associated subarea by means of illumination.

DE 197 44 638 A1 discloses a luminaire with an adjustable radiator, which has a housing, which is connected by such a joint arrangement with a retaining means, that the housing forming the radiator is adjustable in individual pivot positions of a plane of movement.

In this prior art lamp setting the spotlight is indeed possible in individually selectable positions, but it can also be seen a complication, because the operator must bring about the desired position manually. In addition, this lamp is designed without a luminaire housing, with existing lever linkage are visible.

The invention has the object of providing a lamp of the type described in such a way that a mutually dependent movement of the radiator is achieved in two degrees of freedom and preferably at least a multi-sided protected arrangement of the adjustability of the radiator assembly enabling mechanism is achieved. This object is solved by the features of claim 1. Advantageous developments of the inventions are described in the subclaims.

In the luminaire according to the invention, the radiator is slidably held in a rectilinear sliding direction of the luminaire housing, wherein a first pivoting guide slot is located on the luminaire housing, by means of which the radiator is forcibly and reproducibly pivoted upon displacement in the sliding direction. As a result, not only an optional adjustment of the radiator in the sliding direction is possible, but it is also achieved a positively controlled pivotal movement of the radiator. Since the shift in the sliding direction takes place in a guide slot, a positive guidance is thus created both for the sliding movement and for the pivoting movement of the radiator. The operator therefore needs to move the radiator only in the sliding direction, at the same time the radiator is pivoted. The sliding direction and the size of the pivoting movement can be optionally determined by the shape of the guide slot.

As a guide for the sliding movement, a sliding guide can be provided, which forms an acute angle with the pivot guide link.

In this case, the lamp can be constructed so that in a middle position of the sliding portion of the radiator is in a central position of its pivoting range and in each case beyond the central region sliding movements each one of the previous pivotal movement oppositely directed pivoting movement is achieved.

By a transverse to the above-described first pivotal movement of the radiator (with its carrier) directed pivotal movement of the radiator relative to the carrier, the illumination range can also increase or shift laterally.

In further subclaims features are included, which allow an optional pivotal movement of the radiator in a second pivot plane extending at right angles to the direction of displacement containing first displacement plane. This embodiment makes it possible to illuminate with respect to the displacement plane laterally offset areas of the existing space, these areas are inevitably reached and adjusted by a shift in the direction of displacement. In the following advantageous embodiments of the invention will be explained in more detail with reference to a preferred embodiment and drawings. It shows:

Fig. 1 shows a first embodiment of a lamp according to the invention with a housing and an adjustable radiator in perspective

Representation from one side and below; Figure 2 shows the lamp in a slightly pivoted perspective and in another pivotal position of the radiator.

3 shows the luminaire in another lateral perspective; 4 shows the light in the bottom view,

Fig. 5 shows a sliding and pivoting mechanism of the lamp in a left

Sliding and swivel end position; Fig. 6 shows the mechanism in one towards the other sliding and

Pivoting end position adjusted intermediate position; Fig. 7 shows the mechanism in its center position of the sliding and

Swivel range; 8 to 10 different views of a second embodiment of a lamp according to the invention;

Fig. IIa, b the light emission in a luminaire with a pivotable radiator according to the prior art;

12a, b show the light emission in another luminaire with a pivotable radiator according to the prior art; FIGS. 13 a, b show a representation corresponding to FIGS. 11 a, b and 12 a, b with a luminaire according to the invention, and FIGS. 14 a, b show perspective views of the representations in FIGS. 13 a, b.

The main components of the lamp designated in its entirety by 1 are a luminaire housing 2, a radiator 3, a support 4 for the radiator 3, a sliding mechanism 5, through which the support 4 is displaceable in a sliding plane 5a (FIG. 4) with the housing 2 or attachment parts thereof, and a first pivoting mechanism 6 (FIG. 5), by means of which the carrier 4 is pivotable about a pivot axis 6a, which runs approximately at right angles to the sliding plane 5a or parallel thereto. An adjustment device including the slide mechanism 5 and the pivoting mechanism 6 is designated in its entirety by 7. The carrier 4 and the radiator 3 form a movable as a movement unit in the sliding plane 5a and pivotable radiator assembly 10th

The housing 2 is cup-shaped with a base wall 2a and a peripheral wall 2b, so that it has an open housing side, the opening with 2c is designated. The sliding mechanism 5 and the pivoting mechanism 6 are at least partially in the cavity of the housing 2, wherein they are at least partially covered laterally by the peripheral wall 2b. In the exemplary embodiment, the housing 2 has a cuboid shape with a substantially planar base wall 2a, preferably a quadrangular shape, from the edges of which protrude four side walls, of which two opposing side walls are respectively designated 7 and 8. These can be sidewalls of different lengths. In the embodiment, two broad-side side walls 7, which extend to both sides and parallel to the sliding plane 5a, and two narrow-side side walls 8 are provided, which extend at right angles to the sliding plane 5a.

The housing 2 has at least one fastening element (not shown), e.g. a hole in the housing wall, through which the housing 2 is screwed to the ceiling or wall by means of at least one screw.

The sliding mechanism 5 has at least one guide slot 9, in which the carrier 4 in the sliding plane 5a is selectively displaceable back and forth, preferably in a straight line and in particular approximately parallel to the base wall 2a. The guide slot 9 is defined by a e.g. continuous first guide groove 11 formed in a guide wall 12, wherein the carrier 4 with a guide pin 13 in the guide groove 11 is slidably mounted longitudinally back and forth and is secured against a transverse slipping out of the guide groove 11. In the embodiment, two, e.g. the broad side walls 7 forming, guide walls 12 each having a first guide groove 11 provided, which are arranged opposite to each other and between which the carrier 4 is mounted with two laterally oppositely arranged sliding guide pin 13. The guide pin or pins 13 are circular in cross-section, so that the carrier 4 is not only displaceable along the sliding direction 5b but also in the sliding plane 5a is pivotable back and forth.

The sliding mechanism 5 is associated with the forcibly effective first pivot mechanism 6 so that upon displacement of the carrier 4, this simultaneously and forcibly performs a pivotal movement about the pivot axis 6a which extends at right angles to the sliding plane 5a and extends axially through the sliding guide pin 13.

The first pivot mechanism 6 may be formed by at least one second guide slot 14, which is also formed by a guide groove 15 in the guide wall 12 and extending parallel to the sliding plane 5a corresponding pivot plane 6b of the support 4, while a preferably continuously changing effective distance a from the first guide slot 9, and in which the carrier 4 with a second guide pin 16 encloses with a circular cross-sectional shape. In this case, the second guide slot 14 extend rectilinear or arcuate. In the first case, the inclination angle Wl included between the guide slots 9, 14 is the same. In the second case, it can continuously increase or decrease.

The maximum distance a is smaller than the distance b between the two guide pins 13, 16, whereby the carrier 4 with respect to the guide grooves 11, 15 is always at an angle and a dead center position for the carrier 4 is prevented.

When moving in the guide slots 9, 14 between the ends of the carrier 4 is thus pivoted between a minimum (see position of the carrier 4 in solid lines in Fig. 7) and maximum (Fig. 5) pivot position. In the exemplary embodiment, the first guide slot 9 extends approximately parallel to the base wall 2a.

In the shift to the left end position according to FIG. 5, the carrier 4 is pivoted with the radiator 3 so that the carrier 4 with respect to its prescribed position in FIG. 7 includes an acute angle W2, e.g. 45 ° can be.

In order to stabilize the pivot mechanism 6, it is advantageous to provide two second guide slots 14 or guide grooves 15 on both sides of the first guide slot 9, here above and below the guide slot 9. On the carrier 4, two second guide pins 16 are arranged at a double distance b from each other in this case, so that both guide pins 16 are immersed in the guide grooves 15 and guided therein.

It is advantageous to increase the pivoting range of the carrier 4, the first guide slot 9 and the second guide slots 14 beyond the associated center plane El out, in particular mirror-symmetrically extend, so that there is an X-shaped course. With a displacement of the carrier 4 beyond this central region, the carrier 4 can be pivoted with the radiator 3 in the opposite pivoting direction, so that the total achievable pivot angle W3 is greater, for example twice as large as W2, the radiator 3 respectively directed to the side of the lamp, which is opposite to the outward displacement direction 5b. The opposite in Fig. 7 right pivot position of the carrier 4 is indicated by dashed lines. In the context of the invention, the two guide grooves 15 or the three guide grooves 11, 15 in the region of their minimum distance a from each other into one another so that the guide pins 16 and 13 and 16 in the direction of displacement 5b are consecutive, the carrier 4 with its holder for the radiator 3 to the base wall 2a opposite side, z. B. in a ceiling mounting down, is directed.

When the guide grooves 11, 15 merge into each other, they form a kind of switch. By e.g. Manual rotation or guiding can be the second guide pins 16 each introduce into the associated upper or lower Führungsnutzweig.

By a different depth of the guide grooves 11, 15 can be prevented that the guide pins 13, 16, get into the respective non-associated guide groove 11, 15. In the embodiment, the depth of the second guide groove 15 corresponds to only a part of the thickness of the guide wall 12, so that this guide member is hidden from the outside.

In order to be able to pivot the radiator 3 also transversely to the displacement plane 5a and to illuminate areas lying laterally thereof, the radiator 3 is pivotally connected to the support 4 by a second pivot mechanism 17 about a pivot axis 17a, the pivot axis 17a preferably in the sliding plane 5a or runs parallel thereto or may include an acute angle with the sliding plane 5a (not shown).

The pivoting mechanism 17 or the support 4 may, for example, have two fork arms 18, which are directed along the displacement plane 5a and have pivotal connection with the radiator 3 about the pivot axis 17a, eg in that the fork arms 18 overlap the radiator 3 and are provided between the radiator 3 and the Gabelarmenden pivot bearing 19. These may be formed, for example, by hinge pins 19a projecting radially from the radiator 3, which are rotatably mounted in bearing bushes 19b arranged on the carrier 4. In order to be able to provide sufficient space for pivoting the radiator 3, the pivot bearings 19 are arranged in the end region of the fork arms 18, which protrude from a flat eg base part 4a of the carrier 4 to the base wall 2a side facing away. In order to achieve a further small construction, the base part 4a has a recess 4b, into which the emitter 3 can freely dip in a correspondingly large pivoting movement. The sliding mechanism 5 and the pivot mechanism 6 are formed so that at least in the illustrated Schwenkendstellungen the carrier 4 and the radiator 6 are located in the cavity of the lamp housing 2 so below the base wall 2a This is a low construction of the lamp 1 guaranteed.

It is advantageous for stabilizing the guide edges of the first guide grooves 11, which are preferably designed as through slots, to provide edge projections IIa at the edges thereof which are e.g. are formed by a stamping of the edges of the first guide groove 11.

As can be seen in FIGS. 1 to 3, the two guide walls 7 form the side walls 7, only edge strips 7b of the actual side walls being present and being connected to the adjacent side walls 8 and the base wall 2a, the guide walls 12 being on the inside on the edge strips 7b abutment and fastened in a manner not shown, for example by gluing.

By virtue of the fact that the guide walls 12 are separate components which are incorporated in the construction, it is possible to prefabricate the guide walls 12 in a simple manner as a single part and cost-effectively from a single component. Higher strength material, e.g. Wear resistance, form, to ensure a long life.

The radiator 3 preferably has a low construction height h, e.g. may be formed by a radiation side hollowed disc 3b, which may have on its side facing the lamp housing 2 a bulge 3c. On the inside, connecting elements 3d are arranged for the electrical power supply, to which flexible electrical lines, not shown, extend in such a length that the emitter 3 can perform its sliding and pivoting movements. The electrical leads extend e.g. by a cable feedthrough into the interior of the lamp housing 2, wherein they can be attached to the lamp housing 2 in the region of the cable feedthrough.

To be able to position the emitter 3 in each case in its pivoted about its pivot axis 17a position, at least one suitable positioning means is provided that positions the emitter 3 in the set pivot position. This can be formed, for example, by a stiffness of at least one pivot bearing 19, which can be manually pushed over in order to pivot and adjust the radiator 3. A second Ausführungsbei game of a lamp according to the invention is shown in Figs. 8 to 10. As well as the first embodiment of Figs. 1 to 7, this second embodiment of the generally provided with the reference numeral 101 luminaire as a main components housing a luminaire 102, a radiator 103, a carrier 104 for the radiator and a slide mechanism 105, with the help of Carrier 104 is mounted in a sliding plane linearly displaceable within the housing 102. The carrier 104 and the radiator 103 in turn form a radiator arrangement 110. Furthermore, the light 101 is again designed such that upon a displacement of the radiator 103 along the direction of displacement a forced pivoting takes place.

A special feature of the second embodiment is that now the displacement of the radiator 103 is not manually but by means of a drive provided for this purpose. For this purpose, the luminaire 101 initially has a first electric motor, which is connected to a shaft 121 and drives it or sets it in rotation. The longitudinally extending through the lamp housing 102 shaft 121 has an external thread, which in turn cooperates with a corresponding internal thread of a guide sleeve 126 which is attached to a guide carriage 125. As can be seen in particular from the illustration in FIGS. 9 and 10, the guide carriage 125 has end-side pins 127 which engage in a guide groove 111 of a guide sleeve 109 of the lamp housing 102. Depending on the direction in which the shaft 121 is rotated by the electric motor 120, thus, the carriage 125 is moved in one or the other direction of the lamp housing 102.

The simultaneous pivoting of the radiator 103 during a longitudinal movement of the guide carriage 125 is again effected by a further guide groove 115, which is provided on a side wall of the housing 102. In this guide groove 115 is located on the carrier 104 pin 113 and accordingly forms depending on the position of the carriage 125 within the lamp housing 102 a bearing point for the carrier 104 of the radiator 103. The carrier 104 itself is pivotally mounted on the carriage 125, which finally means that upon movement of the carriage 125 in one or the other direction and the fixed to the carrier 104 radiator 103 is pivoted in a suitable manner. Again, the guide groove 115 is configured such that the radiator 103 between two maximum pivot adjustments, each corresponding to a positioning of the radiator 103 near the end faces of the lamp housing 102, can be pivoted, wherein at a central position of the radiator 103 in the housing 102 of the radiator 103rd is aligned perpendicular to the bottom. Finally, by means of a suitable suspension of the radiator 103 on the support 104, pivoting about a second axis 117a is also possible, an electric drive also being provided for this purpose. For this purpose, the luminaire 101 has a further electric motor 130, which is fastened to the carrier 104 and connected to a toothed belt 132 fixedly connected to the second pivot axis 117a of the radiator 103 by a toothed belt 131. The second electric motor 130 thus makes it possible to pivot the radiator 103 in a desired manner about the second pivot axis 117a.

As in the first embodiment, the advantage of the invention results that the lamp 101 has a relatively low height, since the pivoting of the radiator 103 about the first pivot axis 106a is achieved by a special pivot mechanism, which is a linear movement of the carrier 104 in a pivoting movement for the radiator 103. The use of the electric motors 120, 130 now allows, however, make a remote-controlled adjustment of the radiator position. This is particularly advantageous in such applications in which the lamp 101 is difficult to access due to their arrangement. For example. in rooms in which the ceiling is at a high distance from a floor, a comfortable adjustment of the spotlight position is possible.

A particular advantage of the present invention can be clarified again with reference to FIGS. 11 to 14. In this case, FIGS. 11 a and 11 b initially show a conventionally embodied emitter lamp 201, the behavior of which is illustrated for the case that the emitter 203 is oriented perpendicular to the underside (FIG. 11 a), and for the case that the emitter 203 um an axis is pivoted. In the case of the luminaire 201 illustrated in FIGS. 11a and 11b, the radiator 203 is mounted inside the housing 202 in such a way that it protrudes slightly with its front side over a central emission opening 205 of the luminaire housing 202. A displacement parallel to the bottom surface of the housing, as provided in the present invention is not possible in this known lamp.

As can be seen in the illustration in FIG. 1 lb, the pivoting of the radiator 203 in a lateral direction now causes a part 207 of the light emitted by the radiator 203 to be blocked by the lower cover 206 of the luminaire housing 202. This can lead to light losses of up to 25% in the example shown. If the radiator is mounted further upwards within the luminaire housing, so that it does not protrude beyond the emission opening of the housing, the light losses occurring when the radiator is swiveled are even higher, as shown by the representations of FIGS. 12a and 12b. In this case, the arrangement of the radiator with respect to the lower cover of the lamp housing is even less favorable, so that a large portion of the emitted light (up to 50%) is blocked.

By contrast, in the case of the emitter lamp 1, 101 according to the invention, the inventive combination of displacement and pivoting of the emitter 3, 103 makes it possible for the emitter 3, 103 always to be directed in the same way to a central emission opening 40, 140, which is provided in a lower cover 41, 141 of the housing 2, 102 is formed, is aligned. In particular, the sectional views of Fig. 13a and 13b can be seen that even in the pivoted state of Fig. 13b of the radiator 3, 103 is oriented such that the light cone 42, 142 emanating from it completely through the emission opening 40, 140 of the lamp housing. 2 , 102 can be delivered. This represents a clear advantage over classic spotlights, since now there are many possibilities for the alignment of the radiator 3, 103, without the risk of loss of light would exist.

By the present invention, therefore, a spotlight is created, which is characterized by its diverse adjustment options that allow at any time an optimized alignment of the radiator. At the same time a flat design of the lamp is guaranteed, since the corresponding alignment of the radiator is effected by the inventively designed adjusting device. Finally, there is also the possibility of making the setting of the spotlight remotely, thereby further improving the possibilities for the luminaire.

Claims

claims

A luminaire (1, 101) having a luminaire housing (2, 102) and an adjustable radiator arrangement (10, 110), characterized in that the radiator arrangement (10, 110) is arranged in a rectilinear displacement direction (5b) of the luminaire housing (2, 102 ) and in that in the luminaire housing (2; 102) a pivoting guide slot (9; 109) is provided, by means of which the radiator arrangement (10; 110) is forcibly and reproducibly pivoted upon displacement in the direction of displacement (5b).

2. Luminaire according to claim 1, characterized in that the pivot guide slot (9; 109) by a Schwenkführungsnut (15; 115) in a guide wall (12) is formed and the radiator assembly (10; 110) with a in the Schwenkführungsnut (15; 115) is guided in the Schwenkführungsnut (15, 115).

3. Lamp according to claim 1 or 2, characterized in that in the Schiebeendstellungen the radiator arrangement (10; 110) with respect to a transverse to the sliding direction (5b) and between the end positions extending center plane (El) opposite and in particular mirror-symmetrical pivot positions occupies.

4. Luminaire according to claim 2 or 3, characterized in that an X-shaped pivoting guide slot (14) is provided in which with respect to the median plane (El) lateral Führungsnutzweige the radiator assembly (10) with two pivot guide pins (16) engages, wherein the pivot guide pins (16) in the region of the apex of the X-shape upon further pivoting of the radiator arrangement (10) in the same pivoting direction, the pivot guide pins (16) in the direction transverse to the displacement direction (5b) mutually opposite Führungsnutzweige are movable.

5. Luminaire according to one of the preceding claims, characterized in that the radiator arrangement (10) along the sliding direction (5b) in a Schiebeführungskulisse (9) is displaceably guided, with the pivot guide slot (14) includes an acute angle (Wl) and / or in the apex of the X-shaped pivoting guide rail ( 13) and extends between the Schwenkführungsnutzweigen.

6. Lamp according to claim 5, characterized in that the sliding guide (14) by a preferably straight extending Schiebeführungsnut (11) in the guide wall (12) is formed and the carrier (4) with a sliding guide pin (13) in the Schiebeführungsnut ( 11) is enclosed and guided therein.

7. Lamp according to claim 6, characterized in that the width of the Schiebeführungsnut (11) is smaller than the width of the Schwenkführungsnut (15) and / or the depth of the Schiebeführungsnut (11) is greater than the depth of the Schwenkführungsnut (15).

8. Luminaire according to one of the preceding claims, characterized in that two spaced-apart guide walls (12) are provided, in each of which a Schwenkführungskulisse (14) and preferably also Schiebeführungskulisse (9) is arranged and / or between which the radiator arrangement (10) is arranged.

9. Lamp according to one of the preceding claims, characterized in that the guide walls (12) form mutually opposite side walls (7) of the lamp housing (2).

10. Luminaire according to one of the preceding claims, characterized in that the radiator arrangement (10; 110) consists of a carrier (4; 104) and a swivel mounted therein in a pivoting mechanism emitter (3; 103) and the carrier (4; ) is slidably supported by the pivot guide slot (14) and preferably also by the sliding guide slot (9).

11. Luminaire according to claim 10, characterized in that the pivoting mechanism has an approximately in the displacement plane (5a) or at an acute angle thereto arranged pivot axis (17a).

12. Luminaire according to one of the preceding claims, characterized in that the radiator (3, 103) in each position along the displacement direction (5b) on a radiating opening (40, 140) of the lamp housing (2, 102) is aligned.

13. Light according to one of the preceding claims, characterized by a drive for adjusting the radiator arrangement (10, 110).

14. Luminaire according to claim 13, characterized in that the drive comprises an electric motor (120) which cooperates via a shaft (121), with a guide carriage (125) on which the radiator assembly (10; 110) is pivotally mounted.

15. Luminaire according to claim 14, characterized by a second electric motor (130) for pivoting the radiator about a second pivot axis (117 a).

16. Luminaire according to one of claims 13 to 15, characterized in that the drive for adjusting the radiator arrangement (10; 110) is remotely controllable.