EP3534059A2 - Luminaire - Google Patents

Abstract

The invention relates to a first luminaire (1, 101) having a light generating device (2), a heat sink (3, 103), a reflector (4, 104) and an intermediate element (5, 105). The heat sink is pivotally coupled to the reflector about a pivot axis (6) relative to the reflector. From the light generating device, light can be emitted into an interior of the reflector. The intermediate element is mounted so as to be displaceable relative to the cooling body and has at least one first section (9) provided with a toothing (8). The reflector has at least one second section (11) provided with a toothing (10). Engagement of the serrations of the first and second sections into one another counteracts pivoting of the heat sink relative to the reflector about the pivot axis. For a pivoting of the heat sink relative to the reflector about the pivot axis of the toothings of the first and second portions are disengageable. The invention further relates to a second lamp, wherein a helmet-like heat sink is pivotally coupled to a reflector about an axis of rotation relative to an at least partially dome-like reflector. The heat sink engages over the reflector, whereby the reflector is partially received in an inner region of the heat sink.

Description

FIELD OF THE INVENTION

The present invention relates to a luminaire.

TECHNICAL BACKGROUND

Although the invention may be useful in connection with lights of many kinds and for a variety of applications, the invention and the underlying problems are explained below using the example of a recessed luminaire.

Luminaires such as recessed luminaires are well known as such. In many cases, in addition to the creation of a pleasant lighting and the ability to align the beam of light to illuminate specific areas or objects targeted, also put emphasis on an aesthetic ceiling image.

The applicant is known recessed lights, which can be mounted, for example in the manner of a downlight in a suspended ceiling. Furthermore, the Applicant conventional recessed lights are known which are pivotally adapted to align the light cone emitted by the light fitting. While in a kind of conventional lamp by pivoting the light cone out of the vertical out swiveling parts of the lamp out of the ceiling plane and thereby become visible, such protruding pivotal parts of the lamp is avoided in oblique position of the emission direction in another known to the applicant type.

In conventional adjustable lights, it may happen that individual components of an adjustment mechanism, such as fasteners in the form of screws or rivets, in the long term and after prolonged use, for example, by wear after a long time, or due to exposure to heat loosen. Even if the lamp is still kept safe, this may be undesirable because in such a case, the adjustment often no longer works as intended and, for example, no longer reliably maintains the desired orientation selected by the user.

In addition, conventional adjustable lights are often less compact and space-saving constructed as desirable. In particular, in the case of recessed lighting, for example, a reduced height may be desirable.

This is a condition to be improved.

SUMMARY OF THE INVENTION

Against this background, the invention has for its object to provide a luminaire, which is permanently reliable and easy to adjust the direction of light emission adjustable and / or has a reduced height. In particular, the lamp should also allow the creation of a discreet and aesthetic ceiling image.

This object is achieved by a lamp with the features of claim 1 and / or by a lamp with the features of claim 15.

Accordingly, a luminaire with a light generating device, a heat sink, a reflector and an intermediate element is proposed. In this case, the cooling body is pivotably coupled to the reflector about a pivot axis relative to the reflector. The light generating device is arranged on the heat sink such that light can be emitted by the light generating device into an interior space of the reflector. The intermediate element is displaceably mounted on the heat sink relative to the heat sink. It is further provided that the intermediate element has at least one first section provided with a toothing and the reflector has at least one second section provided with a toothing. An engagement of the serrations of the first and second sections into one another here counteracts a pivoting of the heat sink relative to the reflector about the pivot axis. For a pivoting of the heat sink relative to the reflector about the pivot axis of the toothings of the first and second portions are disengageable.

Furthermore, a luminaire with a light-generating device, an at least partially dome-like reflector, and a helmet-shaped heat sink is proposed. In this case, the cooling body is pivotably coupled to the reflector about a pivot axis relative to the reflector. The light generating device is arranged on the heat sink such that light can be emitted by the light generating device into an interior space of the reflector. It is further provided that the heat sink the Reflector overlaps and thereby the reflector is partially received in an inner region of the heat sink.

One of the findings underlying the present invention is that reliable and accurate adjustment of a luminaire can be achieved by utilizing serrated sections that intermesh. A once selected light adjustment can be reliably maintained by positive engagement of the toothings. It is thus possible by means of the teeth a kind of "snapping" in a selected position. An insufficient function of the adjustment mechanism by loosening rivets, screws or the like is avoided by means of the toothings. In particular, the use of the toothings also allows a fine adjustment of the lamp. The lamp is also easy to use to adjust this. In particular, the lamp may further avoid, for example, the need for disassembly of the lamp for the adjustment. In addition, a reliable adjustability in a simple manner with only a few components, using the heat sink, the intermediate element and the reflector can be realized. The adjustment mechanism formed with the toothings is durable and stable. Another idea underlying the invention is that with the help of a helmet-like heat sink, which engages over the reflector, a small size and especially low overall height can be made possible at the same time good heat dissipation. In addition, a pivoting of the heat sink relative to the reflector can be made possible in a simple manner with the helmet-like design of the reflector cross-body heat sink.

By an adjustment of the lamp in the invention by means of a pivoting of the heat sink takes place together with the light generating means arranged thereon, a pivoting out of the reflector, for example, from a ceiling plane can be avoided. An observer of the luminaire thus only recognizes the set main emission direction on the emitted light cone, that is, for example, whether a cone of light is emitted vertically or obliquely. A disturbing change of the ceiling picture can be prevented. An uneasy ceiling image, as it can occur if the light is perceived differently by the viewer after setting operations than before, for example, because by adjusting luminaire components protrude into the room, can be avoided.

Advantageous embodiments and modifications of the invention will become apparent from the dependent claims and from the description with reference to the figures of the drawing.

In one embodiment, the intermediate element in a direction along which the intermediate element is displaceable relative to the heat sink, acted upon with respect to the heat sink with a spring force. Thus, the intermediate member can be reliably held in position. In particular, the engagement of the teeth can be reliably ensured.

In one embodiment, the luminaire has at least one spring device which acts on the intermediate element in relation to the heat sink in such a manner with a spring force that the toothing of the first section is pressed against the toothing of the second section. The toothed geometries of the first and second sections can thus be kept in engagement under the bias provided by the spring means.

The intermediate element is guided rectilinearly displaceable on the heat sink in a development relative to the heat sink. For this purpose, the intermediate element and the heat sink can be equipped with guide means designed to correspond to one another. Such a guide can be implemented in a relatively simple manner.

In one embodiment, at least the toothing of the second section is arranged along an arc, in particular along a circular arc. In this way, a reliable engagement of the toothings can be made possible for different layers of the intermediate element relative to the reflector.

In one embodiment, the second section provided with a toothing is arranged on an outer side of the reflector. In this way, the second portion for the above-described engagement of the toothings is easily accessible.

In a further embodiment, it is provided that the intermediate element has two first sections each provided with a toothing and the reflector has two second sections each provided with a toothing. An unwanted pivoting of the heat sink relative to the reflector can thus be counteracted in an even more improved, reliable and stable manner.

In one embodiment, the intermediate element is formed as an at least partially cap or shell-like component with a recess. The intermediate element can take over in this way around the recess around in a space-saving manner a covering function.

In one embodiment, the heat sink is coupled relative to the reflector within a predefined pivoting range pivotally connected to the reflector. The reflector has in this case at the rear a passage which allows the emission of light by the light generating device in the interior of the reflector for positions of the heat sink relative to the reflector within the pivoting range. The intermediate element is formed according to this embodiment as a cover, which in the positions of the heat sink relative to the reflector within the pivoting range, the passage of the reflector outside of a region of the passage, in the position of the heat sink in the operation of the light generating device for the delivery of light the interior of the reflector is used, each substantially covers. The intermediate element can largely cover the passage outside the area used for the light emission into the interior of the reflector, such that in all intended pivot positions of the heat sink, an undesired rear light exit from the interior of the reflector, for example into the space behind a suspended ceiling, is avoided. Here, the concept of "pivoting position" is intended to include all positions of the heat sink in the pivoting range, in particular the possible end positions, and in particular including a position in which the light output, for example, is vertical to an installation level, if such a position is provided. In this embodiment, a light exit from the reflector on a rear side of the same, such as through a gap between the heat sink and the reflector can be avoided. Loss of light, which could reduce the luminosity, are thus avoided, and a more efficient use of the reflector can be achieved. An intermediate element provided according to this embodiment is advantageous in connection with the toothings provided in a luminaire according to the invention, but may also be useful as a cover element if such serrations are not necessarily provided.

The swivel range here is in particular an angular range about the pivot axis.

In one development, a size of the angular range is for example about 30 degrees.

For example, the pivoting range may include an end position in which a main emission direction thereof is oriented substantially normal to an installation plane of the luminaire. Thus, a "downlight" function with radiation of the light cone can be realized substantially vertically downwards.

In a further development, the reflector can be formed at least partially dome-like. In particular, the rear passage of the reflector may be formed as a through hole in a domed shell-like portion of the reflector.

In one embodiment, it is provided that the heat sink is designed like a helmet and engages over the reflector and the intermediate element in each case. In particular, in this way the reflector and the intermediate element are each partially accommodated in an inner region of the heat sink. In this way, a low overall height of the luminaire can advantageously be achieved, which may be useful in particular with a recessed luminaire.

In particular, the heat sink may be formed in such a way that the heat sink overlaps in one of its end positions relative to the reflector on one side of the pivot axis with the reflector more, and thus receives it in the inner area far more than on the other. In this way, the pivoting is enabled at the same time effective cooling and yet small footprint.

In one embodiment, the reflector has pivot pins which define the pivot axis. Furthermore, the heat sink has the pivot pin associated with each recesses. The heat sink is in this case latched onto the reflector such that the pivot pins are each pivotably received in one of the recesses. In particular, in this case, the pivot pins of the reflector can engage in the recesses of the heat sink. In this way, the reflector and the heat sink can be coupled by latching mating in a simple manner.

In one embodiment, the luminaire further comprises a lens, which is arranged and arranged for directing and / or bundling the light provided by the light-generating device. In this case, it is provided that the intermediate element has a receiving area which is adapted to a size and shape of the lens, preferably a circular area, in which the lens is accommodated at least in sections. Thus, an effective steering and / or focusing of the light can take place.

The receiving region of the intermediate element for the lens is formed, in particular, by a recess of the intermediate element, for example the recess of the intermediate element mentioned above in the case of its at least partially cap-shaped or shell-like design.

In one embodiment, the lens is coupled to the intermediate element in such a way that the teeth of the first and second sections for pivoting the heat sink relative to the reflector can be disengaged by an operator by pressing on the lens from a visible side of the light. In this case, the pressing by the operator can in particular take place against the spring force provided by the spring device. In this way, a flexible adjustment of the heat sink and thus the Lichtabstrahlrichtung in a simple manner and in particular after installation of the lamp without disassembly or removal of the same by means of pressure on the lens possible. Additional effort for the adjustment process is avoided. For the user, a simple, unobtrusive operation is achieved.

In one embodiment, the lamp is designed as a recessed ceiling spotlights. The subtle adjustment of the lamp can often be useful in such a situation installation.

In one embodiment, a frame is further provided, in which the reflector can be latched such that the latched reflector is rotatable about a central axis of the reflector relative to the frame. In this way, the lamp can be locked in the frame. The frame can form a lighting arrangement together with the lamp. In this way, a diverse alignment and adjustment for the light emitted by the light is possible. A rotation about the central axis of the reflector can also provide an additional adjustment without this unrest in the appearance of the installation level, for example, the ceiling, get inside. A snap makes the light also easy to assemble and disassemble.

The reflector can be equipped in a development with locking devices, such as spring-loaded balls that allow the engagement of the reflector in the frame and the rotation of the reflector about the central axis.

In one embodiment, the pivot axis about which the heat sink is pivotally coupled to the reflector relative to the reflector is arranged substantially normal to the central axis about which the reflector is rotatable in the frame. This contributes to a versatile and flexible adjustability.

In particular, the frame of the lamp may be formed as a mounting frame, which is for example so installed in a ceiling, that the central axis of the reflector is substantially perpendicular to an installation plane, such as a ceiling plane, aligned.

In particular, in an end position of the heat sink, which is encompassed by the above-described pivoting range, in one embodiment, the light-generating device can radiate into the interior of the reflector substantially parallel to the central axis.

In one embodiment, the heat sink is formed with a metal material, and the reflector and the intermediate element are each formed with a plastic material. A heat sink according to this embodiment is robust and has favorable heat conduction properties, while the reflector and the intermediate element can be made relatively inexpensive and weight saving. The heat sink can be die cast, for example. The reflector and the intermediate element can be manufactured for example by means of plastic injection molding.

In one embodiment, the light generating device is formed with an LED device, which is arranged on the heat sink. The LED device may have one or more LEDs as light sources. Such a light generating device can manage with comparatively small space and also contribute to energy savings.

The light generating device is preferably fixed to the heat sink. In particular, in one embodiment, the heat sink may have a mounting surface for the LED device. The LED device can, for example, have an LED circuit board which is mounted directly on the heat sink. Heat generated by the LED device during operation can be effectively dissipated into the heat sink.

It is understood that the above embodiments and developments are applicable in each case to the two lamps proposed according to the invention.

The above embodiments and developments can, if appropriate, combine with each other as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention which have not been explicitly mentioned above or described below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENTS OF THE DRAWINGS

Fig. 1

eine Leuchte sowie einen Einbaurahmen, in den die Leuchte eingesetzt ist, gemäß einem ersten Ausführungsbeispiel, in einer perspektivischen Ansicht von einer Rückseite;

Fig. 2

die Leuchte der Fig. 1 in einer perspektivischen Seitenansicht, wobei der Rahmen zur besseren Übersicht weggelassen ist;

Fig. 3

einige zusammengebaute Bauteile der Leuchte der Fig. 1 in einer perspektivischen Ansicht;

Fig. 4

eine perspektivische Ansicht analog Fig. 3, wobei weitere Bauteile der Leuchte zur besseren Übersicht weggelassen sind;

Fig. 5

die Leuchte der Fig. 1 in einer perspektivischen Vorderansicht;

Fig. 6

die Leuchte sowie den Einbaurahmen gemäß Fig. 1 in einem Schnitt A-A, wie in Fig. 1 angedeutet;

Fig. 7

einen Kühlkörper der Leuchte der Fig. 1 in einer perspektivischen Rückansicht;

Fig. 8

den Kühlkörper aus Fig. 7 in einer ersten Seitenansicht;

Fig. 9

den Kühlkörper aus Fig. 7 in einer zweiten Seitenansicht;

Fig. 10

den Kühlkörper aus Fig. 7 in einer perspektivischen Innenansicht;

Fig. 11

einen Reflektor der Leuchte der Fig. 1 in einer perspektivischen Rückansicht;

Fig. 12

den Reflektor aus Fig. 11 in einer Rückansicht;

Fig. 13

den Reflektor aus Fig. 11 in einem Schnitt B-B, wie in Fig. 12 angedeutet;

Fig. 14

den Reflektor aus Fig. 11 in einer Seitenansicht;

Fig. 15

ein Detail I des Reflektors, wie in Fig. 14 angedeutet;

Fig. 16

ein Zwischenelement der Leuchte der Fig. 1 in einer perspektivischen Innenansicht;

Fig. 17

das Zwischenelement aus Fig. 16 in einer Rückansicht;

Fig. 18

ein Detail II des Zwischenelements, wie in Fig. 17 angedeutet;

Fig. 19

das Zwischenelement aus Fig. 16 in einem Schnitt C-C, wie in Fig. 17 angedeutet;

Fig. 20

eine Seitenansicht der Leuchte der Fig. 1, wobei der Kühlkörper eine erste Stellung in Bezug auf den Reflektor einnimmt;

Fig. 21

die Leuchte im Zustand der Fig. 20 in einem Mittelschnitt;

Fig. 22

die Leuchte im Zustand der Fig. 20 in einer Vorderansicht von einer Sichtseite;

Fig. 23

eine Seitenansicht der Leuchte der Fig. 2, wobei der Kühlkörper im Vergleich mit seiner Stellung in Fig. 20 verschwenkt ist und eine zweite Stellung in Bezug auf den Reflektor einnimmt;

Fig. 24

die Leuchte im Zustand der Fig. 23 in einem Mittelschnitt;

Fig. 25

die Leuchte im Zustand der Fig. 23 in einer Vorderansicht von einer Sichtseite;

Fig. 26

eine Leuchte gemäß einer Variante des ersten Ausführungsbeispiels mit im Vergleich zu dem ersten Ausführungsbeispiel modifiziertem Kühlkörper, in einer Explosionsansicht;

Fig. 27

die Leuchte der Fig. 26 perspektivisch von einer Rückseite her gesehen;

Fig. 28

die Leuchte der Fig. 26 in einer ersten Seitenansicht;

Fig. 29

die Leuchte der Fig. 26 in einer zweiten Seitenansicht;

Fig. 30

die Leuchte der Fig. 26 in einem Mittelschnitt D-D gemäß Fig. 28;

Fig. 31

eine Leuchte gemäß einem zweiten Ausführungsbeispiel in einem Mittelschnitt für eine erste Stellung eines Kühlkörpers; und

Fig. 32

die Leuchte der Fig. 26 in einem Mittelschnitt für eine zweite Stellung des Kühlkörpers.

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawings. It shows:

Fig. 1

a lamp and a mounting frame, in which the lamp is used, according to a first embodiment, in a perspective view from a rear side;

Fig. 2

the light of the Fig. 1 in a perspective side view, the frame is omitted for clarity;

Fig. 3

some assembled components of the luminaire Fig. 1 in a perspective view;

Fig. 4

a perspective view analog Fig. 3 , wherein other components of the lamp are omitted for clarity;

Fig. 5

the light of the Fig. 1 in a perspective front view;

Fig. 6

the luminaire and the mounting frame according to Fig. 1 in a section AA, as in Fig. 1 indicated;

Fig. 7

a heat sink of the luminaire Fig. 1 in a perspective rear view;

Fig. 8

the heat sink off Fig. 7 in a first side view;

Fig. 9

the heat sink off Fig. 7 in a second side view;

Fig. 10

the heat sink off Fig. 7 in a perspective interior view;

Fig. 11

a reflector of the luminaire Fig. 1 in a perspective rear view;

Fig. 12

the reflector off Fig. 11 in a rear view;

Fig. 13

the reflector off Fig. 11 in a section BB, as in Fig. 12 indicated;

Fig. 14

the reflector off Fig. 11 in a side view;

Fig. 15

a detail I of the reflector, as in Fig. 14 indicated;

Fig. 16

an intermediate element of the luminaire Fig. 1 in a perspective interior view;

Fig. 17

the intermediate element Fig. 16 in a rear view;

Fig. 18

a detail II of the intermediate element, as in Fig. 17 indicated;

Fig. 19

the intermediate element Fig. 16 in a section CC, as in Fig. 17 indicated;

Fig. 20

a side view of the light of Fig. 1 wherein the heat sink occupies a first position with respect to the reflector;

Fig. 21

the light in the state of Fig. 20 in a middle section;

Fig. 22

the light in the state of Fig. 20 in a front view from a visible side;

Fig. 23

a side view of the light of Fig. 2 , where the heat sink compared with its position in Fig. 20 is pivoted and occupies a second position with respect to the reflector;

Fig. 24

the light in the state of Fig. 23 in a middle section;

Fig. 25

the light in the state of Fig. 23 in a front view from a visible side;

Fig. 26

a lamp according to a variant of the first embodiment with in comparison to the first embodiment modified heat sink, in an exploded view;

Fig. 27

the light of the Fig. 26 seen in perspective from a rear side;

Fig. 28

the light of the Fig. 26 in a first side view;

Fig. 29

the light of the Fig. 26 in a second side view;

Fig. 30

the light of the Fig. 26 in a middle section DD according to Fig. 28 ;

Fig. 31

a lamp according to a second embodiment in a central section for a first position of a heat sink; and

Fig. 32

the light of the Fig. 26 in a central section for a second position of the heat sink.

The accompanying drawings are intended to provide further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawings, identical, functionally identical and identically acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.

DESCRIPTION OF EMBODIMENTS

A lamp 1 according to a first embodiment, and components of the lamp 1, are in the FIGS. 1 to 25 shown. The lamp 1 is designed as a recessed ceiling spotlight or adjustable "downlight" and creates a discreet ceiling and a pleasant lighting mood in a compact design and with a relatively small diameter.

FIG. 1 shows the lamp 1, which forms a lighting arrangement together with a substantially annular mounting frame 21. The frame 21 may, for example, in a round opening in a in FIG. 1 not shown, suspended false ceiling to be installed. For this purpose, the mounting frame 21 by means of tab-like fastening means 27 which are coupled, for example, in different heights and positions on an outer side of the frame 21 with the frame 21, be secured in the ceiling area. The lamp 1 is releasably engaged in the frame 21 and can relative to the frame 21 about a central axis 22 of a reflector 4 relative to the frame 21st to be twisted. Here, the lamp 1 may be rotatable about the central axis 22 with respect to the frame 21 by an angle of 360 degrees or more, or by an angle of slightly less than 360 degrees, for example by about 355 degrees.

The luminaire 1 has a light generating device 2, a helmet-like heat sink 3, an at least partially dome-shaped reflector 4 and an intermediate element 5. The heat sink 3 engages in each case the reflector 4 and the intermediate element 5, whereby the reflector 4 and the intermediate element 5 are each received with a portion in an inner region 24 of the heat sink 3, see Fig. 2 and 10 ,

The light generating device 2 comprises an LED device 23 with one or more LEDs which provide the light to be radiated by the luminaire 1. FIG. 10 shows in the inner region 24 of the heat sink 3 a mounting surface 32 thereof, which is formed as a flat inner surface of the heat sink 3. The LED device 23 has an LED circuit board, which is mounted directly on the heat sink 3 by means of the mounting surface 32. The light generating device 2 is fixed to the heat sink 3 in this way.

The light generating device 2 is arranged such that it can emit light in an interior 7 of the reflector 4 during operation. This will be explained below.

The lamp 1 has a lens 19 which is arranged and arranged for directing and / or focusing the light provided by the light-generating device 2. The lens 19 is for this, see FIGS. 5 and 6 , disposed in front of the light generating device 19 and has a substantially circular cylindrical outer shape.

The intermediate element 5, which will be described in more detail below, has a substantially circular recess 14 in the form of a passage opening whose shape and diameter are adapted to the shape and the diameter of the lens 19. A portion of the lens 19 is received in the recess 14. Thus, the recess 14 forms a receiving area 20 for the lens 19.

FIG. 4 shows that the intermediate element 5 is arranged on a rear and outer side 41 of the reflector 4. The reflector 4 is provided on its rear side with a passage 16, see in particular FIGS. 4 and 11-13 , The passage 16 is introduced as a passage opening in a curved, shell-like portion 33 of the reflector 4. In a view along the central axis 22, see, for example FIG. 12 , the passage is slightly elongated and also rounded.

The passage 16 is larger in area than the recess 14 of the intermediate element 5. In FIG. 4 lie the recess 14 and the passage 16 one above the other, such that the recess 14 is not covered by parts of the reflector 4. The lens 19 protrudes through the recess 14 into the passage 16, see Fig. 6 , In this way, light bundled and / or guided by the light generating device 2 through the lens 19 can be emitted into the interior 7 of the reflector 4.

The heat sink 3 is pivotally coupled relative to the reflector 4 about a pivot axis 6, which is defined by two pivot pins 17 of the reflector 4 projecting radially outwards. In this way, a pivoting of the heat sink 3 relative to the reflector 4 is made possible within a predefined pivoting range 15, wherein in the first embodiment shown the pivoting area 15 about the pivot axis 6 as an angular range of about 30 degrees relative to the central axis 22, see Fig. 23 , is defined. The helmet-like heat sink 3, which is externally provided with a plurality of ribs 28 for improving the cooling effect, see Fig. 1, 2 and 7-10 , Has an inner region 24, which is bounded by an end wall 29 and a peripheral wall 30 of the heat sink 3. The peripheral wall 30 has a cutout 31 in a region which extends approximately over half the circumference of the heat sink. By means of the cutout 31 is, for pivoted positions of the heat sink 3 relative to its vertical position in Fig. 2 , Made space for the reflector 4 and allows the pivoting of the heat sink 3 about the axis 6.

Fig. 2 shows how the heat sink 3 in the illustrated in this figure, vertical orientation of the heat sink 3 in one half of the circumference of the reflector 4 between the two pivot pins 17, in Fig. 2 on the left side, the shell-like portion 33 of the reflector 4 largely receives in itself, while in the other half of the circumference of the reflector 4 in this position of the heat sink 3, a part of the shell-like portion 33 protrudes. The heat sink 3 and the reflector 4 thus overlap Fig. 2 on one side of the pivot axis 6 more than on the other.

A targeted alignment of a light cone generated by the light 1 is possible by the adjustment of the heat sink 3 relative to the reflector 4 about the pivot axis 6. The heat sink 3 is in this case pivoted together with the intermediate element 5, the lens 19 and the light generating device 2. A first end position of the heat sink 3 is in the Figures 2 and 20 to 22 shown, a second end position thereof in the FIGS. 23 to 25 , wherein the end positions exemplified in the sketched embodiment limit the angle range 15. In the first end position, the light is emitted into the interior 7 of the reflector 4 along a main direction which is substantially parallel to the center axis 22 of the reflector 4. The lamp 1 emits its light cone in this first end position thus substantially parallel to the central axis 22, for example, when installed in a horizontal ceiling vertically downwards.

Out Fig. 23-25 For example, it can be seen that components of the luminaire 1 do not protrude from the reflector 4 on the visible side S in any of the pivoting positions. The central axis 22 of the reflector 4 can remain unchanged, while the light radiated outwards from the luminaire 1 by the reflector 4 is aligned by means of pivoting of the heat sink 3 together with the light generating device 2 and the lens 19. The light 1 thus always gives a discreet, unaltered ceiling image, but still allows an effective alignment of the light cone produced. The viewer thus perceives no change or impairment of the aesthetic appearance of the lamp 1 when adjusting the light cone true.

By means of the combination of the pivoting of the heat sink 3 about the pivot axis 6 and the rotatability of the reflector 4, and thus the lamp 1, about the central axis 22, a flexible and versatile orientation of the light generated by the lamp 1 is achieved. The central axis 22 and the pivot axis 6 are in this case substantially perpendicular to each other, wherein in a substantially horizontal installation of the frame 21 in the ceiling, the pivot axis 6 horizontally and the central axis 22 are aligned vertically. The central axis 22 is in this case in particular perpendicular to an installation level, not shown, which corresponds for example to the ceiling plane. The rotation of the lamp 1 about the central axis 22 does not disturb the ceiling image.

The heat sink 3 has, see for example Fig. 2 . 7, 8, 10 , Recesses 18, which are designed as round passage openings and are arranged at a distance of 180 degrees along the circumference of the heat sink 3. The recesses 18 are provided adjacent to an outer edge 34 of the peripheral wall 30 and the two end portions of the cutout 31. When assembling the lamp 1, the heat sink 3 is clipped from the outside 41 of the reflector 4 ago on the reflector 4, whereby each of the two pivot pin 17 engages in an associated one of the two recesses 18 and is pivotally received in the recess 18 after latching.

The engagement of the lamp 1 in the frame 21 is made possible by means arranged on the reflector 4 locking devices 35. In the lamp 1, the locking devices 35 are respectively formed as a spring-loaded and radially outwardly facing ball. The latching devices 35 can also be referred to as ball catchers. The balls are each received in a suitable receptacle 36 on the reflector 4. Three receptacles 36 for balls of the locking devices 35 are arranged at a distance corresponding to an angle W of 120 degrees about the central axis 22 on the outer circumference of the reflector 4, see in particular Fig. 12 , The balls can engage in a circumferential groove of the frame 21 and also allow twisting of the latched reflector 4 about the central axis 22. The engagement by means of the locking means 35 is such that the latching connection of the lamp 1 and frame 21 can be released, which also a simple disassembly of the lamp 1 is possible.

The formed with a cap or shell-like shape intermediate element 5 is in the Figures 16-19 shown in more detail. On both sides of a symmetry axis 37, see Fig. 17 , The intermediate element 5 in each case a first portion 9, wherein each of the two first portions 9 is provided in each case with a toothing 8. Further, the intermediate member 5 is provided with three pin-like guide means 38 arranged in parallel with each other and spaced at a distance corresponding to an angle of W 'of about 120 degrees around the recess 14. The guide means 38 and the serrations 8 point in the opposite direction. Each toothing 8 has in the illustrated embodiment, for example, five teeth. The sections 9 are arranged symmetrically to the axis 37.

The reflector 4, in the Figures 11-15 is shown in more detail, has on both sides of a symmetry axis 39 each have a second portion 11 on the outside 41 of the reflector 4. Each of the two sections 11 is provided with a toothing 10. Each of the serrations 10 is along a circular arc 13, see Fig. 15 arranged, wherein the circle center of the arc 13 is located substantially on the axis 6. Each of the serrations 10 extends in the illustrated embodiment over an angular range of about W1 + W2 = 40 degrees with W1 = 5 degrees and W2 = 35 degrees, see Fig. 14 , In the embodiment shown, each of the serrations 10 exemplarily has a number of 16 teeth along the arc 13. The sections 11 are arranged symmetrically to the axis 39.

The heat sink 3 is, see for example Fig. 10 , equipped with three guide means 40 which are formed as open to the inner region 24 recesses in the heat sink 3. The guide means 40 correspond in shape and positioning the guide means 38 of the intermediate member 5, such that the intermediate member 5 can be inserted into the inner region 24 and in this case the pin-like Guiding devices 38 are each inserted into the recess-shaped guide means 40. In this way, the intermediate element 5 along a direction of displacement V parallel to the extension direction of the guide means 38, and thus, for example, in Fig. 6 in the vertical direction, slidably mounted on the heat sink 3. The intermediate element 5 can thus be displaced parallel to the direction V relative to the heat sink 3.

Further, a spring device 12 designed in each case as a compression spring is placed on each of the peg-shaped guide devices 38 between the heat sink 3 and the intermediate element 5. See for example 3 and 4 in which the spring devices 12 are plugged onto pins which serve as the guide means 38. In addition, in particular in the Fig. 3, 4 . 16 and 19 also shown that the guide means 38 are each formed with a thicker and a thinner portion, which merge into one another in the region of a step 38 '. The spring device 12 can each rest on the step 38 ', see 3 and 4 , Lateral guidance may be achieved by an outer surface 38 "of the thicker portions of the guides 38.

It should be noted that the 3 and 4 show the guide means 38 in a first variant in which the respective thicker and thinner portion are formed with a substantially cylindrical outer surface which is uninterrupted in its circumferential direction. In contrast, the outer surfaces of the guide means 38 in the Figures 16-19 provided in a variant with additional longitudinal grooves 38 '", but in turn the spring device 12 is seated on the step 38'.

The spring means 12 bias the intermediate member 5 with a spring force F parallel to the direction V, see, for example Fig. 3, 4 which is oriented in the direction away from the heat sink 3 and towards the reflector 4. Here, the spring devices 12 are based on the heat sink 3.

Under the action of the spring means 12, the serrations 8 are pressed against the serrations 10 and engage each other. The design of the serrations 8 is made such that the teeth 8 of the shorter executed first portion 9 along the circular arc 13 at different locations in the teeth 10 of the longer formed second portion 11 can engage. The toothings 8 and 10 are therefore designed to be coordinated with one another in order to be able to realize such an intervention.

The engagement of the toothings 8 and 10 into one another counteracts pivoting of the heat sink 3, and thus also of the light-generating device 2, about the pivot axis 6 relative to the reflector 4. Once set pivot position of the heat sink 3 and thus the generated light cone remains reliable and accurate in this way.

The lamp 1 makes it possible to change the heat sink 3 and thus the orientation of the emitted light without the lamp 1 has to be removed from the frame 21. For this purpose, an operator presses on the visible side S of the luminaire 1, see for example Fig. 5 or 6 , against the spring force F on the lens 19. The lens 19 is slidable in relation to the heat sink 3 and coupled to the intermediate element 5 that stand out by pressing on the lens 19, the teeth 8 and 10 against the direction of force F from each other and disengage. Here, the displacement by which the intermediate element 5 is displaceable against the spring force F, sufficient so that the serrations 8, 10 can be disengaged.

In this case, the lens 19 is thus pressed in the direction of the heat sink 3. In this state, the heat sink 3 can be pivoted together with the light generating device 2, the intermediate element 5 and the lens 19 about the pivot axis 6. In the desired angular position of the heat sink 3, the operator takes the pressure away from the lens 19, whereby the engagement of the toothings 8 and 10 is restored and the desired orientation of the heat sink 3 is fixed. Under the action of the spring means 12, therefore, the heat sink 3 can be kept in any desired positions thereof in the pivoting area 15. The lens 19 may for example be secured in the recess 14 on the intermediate element 5.

An adjustment about the central axis 22 can be done without having to remove the lamp 1 from the frame 21. Thus, the lamp 1 can be adjusted versatile without the need for disassembly.

In a direction parallel to the pivot axis 6, a dimension of the passage 16 in the reflector 4 substantially corresponds to a diameter of the recess 14 in the intermediate element. Through the recess 14, the lens 19 projects, whereby with the aid of the lens 19 guided and / or focused light can be discharged into the interior 7 of the reflector 4. When pivoting about the pivot axis 6, the intermediate element 5 moves with the heat sink 3 and moves in the region of the outer side 41 of the reflector 4 in such a way that outside the region of the lens 19, the passage 16 always remains substantially covered. See for example Fig. 5 Do this for a vertical position of the heat sink 3, and for example Fig. 24 which illustrates the covering of the passage for a tilted position of the heat sink 3.

For each pivot position of the heat sink 3 relative to the reflector 4 within the pivot region 15 thus light from the light generating device 2 can be discharged into the interior 7, while an undesirable light leakage is avoided on the back of the reflector 4. Thus, light losses associated with such a light exit are avoided. The intermediate element 5 thus acts as a cover element which can be displaced on the reflector outer side 41 and which moves with the cooling body 3 when pivoting about the axis 6. A region 25 of the passage 16 through which in each case the lens 19 protrudes in a pivoting position of the heat sink 3, is used for the light emission into the interior 7, while a remaining region 26, or in the case of intermediate position remaining areas of the passage 16 outside Region 25 in each pivot position of the heat sink 3 in the pivoting region 15 is substantially covered by the intermediate element 5 is / are. In this way, for all possible positions of the heat sink 3, during pivoting of the heat sink 3, substantially no visible from the visible side gap S at the back of the reflector 4. During Fig. 21 shows that the intermediate element 5 avoids such a gap in the vertical end position of the heat sink 3, this is made Fig. 24 for an oblique position of the heat sink 3 clearly. In Fig. 21 the region 26 is covered by the intermediate element 5, although the heat sink 3 in this figure does not completely cover the region 26. In Fig. 24 The intermediate element 5 covers the region 26 present in the position shown despite simultaneous coverage by the heat sink 3.

A lamp 1 according to a variant of the first embodiment with a modified heat sink 3 show the Figures 26-30 , wherein the lamp 1 according to Fig. 26-30 only therein of the lamp 1, as described above for the first embodiment, distinguishes that in Fig. 26-30 the heat sink 3 between some of the cooling fins 28 is additionally broken, and thus has 28 openings 42 between some of the ribs. Through the openings 28, a portion of the intermediate element 5 is visible, which in turn advantageously provides, in addition to the function of the toothing 8, a covering function. The openings 42 can contribute to weight savings and improve ventilation of the outside of the reflector 41 and the gap between the heat sink 3 and reflector 4.

A luminaire 101 with a light generating device 2, a heat sink 103, a reflector 104 and an intermediate element 105 according to a second embodiment show the FIGS. 31 and 32 , The second embodiment differs from the first embodiment in terms of the shape of the heat sink 103, which in the second embodiment on the same side thereof, the pivoting of the heat sink 103 away from an opening of the reflector 104 and in Fig. 32 moves upward, extends less far down over the reflector 104 and thus the reflector 104 thus overlaps, but less largely absorbs itself.

In the embodiment described above, the heat sink 3, 103 is formed of a metal material, for example, die-cast. The reflector 4, 104 and the intermediate element 5, 105 are each made of a plastic material, for example injection-molded. For example, the reflector 4, 104 and the intermediate element 5, 105 may be made of a polycarbonate. The reflector 4, 104, and if desired also the intermediate element 5, 105, can be provided in a number of different colors, for example black, white, copper, chrome or gold. The reflector 4, 104, and if desired also the intermediate element 5, 105, may be vacuum-coated.

Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto but is modifiable in a variety of ways.

LIST OF REFERENCE NUMBERS

1

lamp

2

Light fixture

3

heatsink

4

reflector

5

intermediate element

6

swivel axis

7

Interior (reflector)

8th

Perforation

9

first section

10

Perforation

11

second part

12

spring means

13

arc

14

Recess (intermediate element)

15

swivel range

16

Passage (reflector)

17

Pivot pin (reflector)

18

Recess (heat sink)

19

lens

20

Receiving area (intermediate element)

21

frame

22

Central axis (reflector)

23

LED device

24

Interior (heat sink)

25

Area (passage)

26

Area (passage)

27

fastening device

28

Ribs (heat sink)

29

End wall (heat sink)

30

Peripheral wall (heat sink)

31

Cutout (peripheral wall)

32

mounting surface

33

dish-like section (reflector)

34

Outer edge (peripheral wall)

35

locking device

36

admission

37

Symmetry axis (intermediate element)

38

Guide device (intermediate element)

38 '

step

38 "

outer surface

38 ''

longitudinal groove

39

Symmetry axis (reflector)

40

Guide device (heat sink)

41

Outside (reflector)

42

opening

101

lamp

103

heatsink

104

reflector

105

intermediate element

F

spring force

S

Main page

V

displacement direction

W

corner

W '

corner

W1

corner

W2

corner

Claims (16)

Luminaire (1; 101),
with a light generating device (2), a heat sink (3; 103), a reflector (4; 104) and an intermediate element (5; 105);
wherein the heat sink (3; 103) is pivotally coupled to the reflector (4; 104) about a pivot axis (6) relative to the reflector (4; 104);
wherein the light generating means (2) is arranged on the heat sink (3; 103) such that light can be emitted from the light generating means (2) into an interior space (7) of the reflector (4; 104);
wherein the intermediate element (5; 105) is displaceably mounted on the heat sink (3; 103) relative to the heat sink (3; 103);
wherein the intermediate element (5; 105) has at least one first section (9) provided with a toothing (8) and the reflector (4; 104) has at least one second section (11) provided with a toothing (10); and
wherein engagement of the serrations (8, 10) of the first and second sections (9, 11) counteracts pivoting of the heat sink (3; 103) relative to the reflector (4; 104) about the pivot axis (6) and for pivoting the toothings (8, 10) of the first and second sections (9, 11) can be brought out of engagement with the heat sink (3; 103) relative to the reflector (4; 104) about the pivot axis (6). Luminaire according to claim 1,
characterized in that the intermediate member (5; 105) is movable with respect to the heat sink (3; 103) in a direction (V) along which the intermediate member (5; 105) is slidable relative to the heat sink (3; a spring force (F) is acted upon. Luminaire according to claim 1 or 2,
characterized in that the lamp (1; 101) has at least one spring device (12) which acts on the intermediate element (5; 105) with a spring force (F) in relation to the heat sink (3; 8) of the first section (9) is pressed against the toothing (10) of the second section (11). Luminaire according to at least one of the preceding claims,
characterized in that at least the toothing (10) of the second portion (11) along an arc (13), in particular along a circular arc, is arranged. Luminaire according to at least one of the preceding claims,
characterized in that the intermediate element (5; 105) is formed as an at least partially cap-like or shell-like component with a recess (14). Luminaire according to at least one of the preceding claims,
characterized in that the heat sink (3; 103) is pivotably coupled to the reflector (4; 104) relative to the reflector (4; 104) within a predefined pivoting area (15) and the reflector (4; 16), which controls the emission of light by the light generating device (2) into the interior (7) of the reflector (4; 104) for positions of the heat sink (3; 103) relative to the reflector (4; 15), and in that the intermediate element (5; 105) is designed as a cover element which, in the positions of the heat sink (3; 103) relative to the reflector (4; 104) within the pivoting region (15), the passage (16). outside of a region (25) of the passage (16) which is in the position of the heat sink (3; 103) during operation of the light generating device (2) for emitting the light into the interior (7) of the reflector (4; 104) is used, each essentially covers. Luminaire according to at least one of the preceding claims,
characterized in that the cooling body (3; 103) is designed like a helmet and engages over the reflector (4; 104) and the intermediate element (5; 105) in each case. Luminaire according to at least one of the preceding claims,
characterized in that the reflector (4) pivot pin (17) which define the pivot axis (6), and that the cooling body (3) the pivot pin (17) respectively associated recesses (18), wherein the heat sink (3) the reflector (4) is latched in such a way that the pivot pins (17) in each case in one of the recesses (18) are pivotally received. Luminaire according to at least one of the preceding claims,
characterized in that the lamp (1; 101) further comprises a lens (19) arranged and arranged to be the one from the light generating means (2) to direct and / or bundle the light provided, and in that the intermediate element (5; 105) has a preferably circular receiving area (20) adapted to a size and shape of the lens (19), in which the lens (19 ) is recorded at least in sections. Luminaire according to claim 9,
characterized in that the lens (19) is coupled to the intermediate element (5; 105) in such a way that the teeth (1; 101) from an operator person press the lens (19) from a visible side (S) of the luminaire (1; 8, 10) of the first and second sections (9, 11) for pivoting the heat sink (3, 103) relative to the reflector (4, 104) are disengageable. Luminaire according to at least one of the preceding claims,
characterized in that there is further provided a frame (21) into which the reflector (4; 104) can be latched such that the latched reflector (4; 104) extends about a central axis (22) of the reflector (4; 104) relative to the frame (21) is rotatable. Luminaire according to claim 11,
characterized in that the pivot axis (6) about which the heat sink (3; 103) is pivotally coupled to the reflector (4; 104) relative to the reflector (4; 104) is substantially normal to the central axis (22), around which the reflector (4; 104) is rotatable in the frame (21) is arranged. Luminaire according to at least one of the preceding claims,
characterized in that the heat sink (3; 103) is formed with a metal material, and that the reflector (4; 104) and the intermediate element (5; 105) are each formed with a plastic material. Luminaire according to at least one of the preceding claims,
characterized in that the light generating device (2) is formed with an LED device (23) which is arranged on the heat sink (3; 103). Luminaire (1; 101),
with a light generating device (2), an at least partially dome-shaped reflector (4, 104), and a heat sink (3, 103) of helical design; wherein the heat sink (3; 103) is pivotally coupled to the reflector (4; 104) about a pivot axis (6) relative to the reflector (4; 104);
wherein the light generating means (2) is arranged on the heat sink (3; 103) such that light can be emitted from the light generating means (2) into an interior space (7) of the reflector (4; 104); and
wherein the heat sink (3; 103) engages over the reflector (4; 104) and as a result the reflector (4; 104) is received in sections in an interior region (24) of the heat sink (3; Luminaire according to claim 15,
characterized in that the heat sink (3; 103) is pivotably coupled to the reflector (4; 104) relative to the reflector (4; 104) within a predefined pivoting area (15) and the reflector (4; 16), which controls the emission of light by the light generating device (2) into the interior (7) of the reflector (4; 104) for positions of the heat sink (3; 103) relative to the reflector (4; 15), and in that the luminaire (1; 101) has an intermediate element (5; 105) which is designed as a cover element which is in the positions of the heat sink (3; 103) relative to the reflector (4; 104) within of the pivoting region (15) the passage (16) of the reflector (4; 104) outside a region (25) of the passage (16), in the position of the heat sink (3; 103) in the operation of the light generating means (2) for the delivery of the light in the interior (7) of the reflector (4; 104) gen is used, each substantially covers.

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