EP2373923B1 - Light with an at least partially removably innerframe - Google Patents

Description

The present invention relates to a luminaire according to the preamble of claim 1, which is provided in particular for installation in ceilings and / or walls and for this purpose has a luminaire housing for receiving lighting means and an inner frame connected to the housing. In particular, the present invention relates to a so-called downlight.

For recessed luminaires whose housings are arranged, for example, in openings of suspended ceiling elements, it is customary to arrange a cover plate provided for emitting light with the aid of a special frame element which can be fastened to the housing. The frame element is in this case, for example, fastened via screw, bayonet or Schnapprastverbindungen to the housing, where it can then be solved with the help of appropriate tools again from the housing. The detachable arrangement of the frame member with the cover is required to allow access to the interior of the lamp housing. Such access may be required, for example, to perform maintenance or to change the arranged in the housing bulbs.

Since in the assembled state of the lamp it is only accessible from the bottom, it is advantageous if the frame member with the cover as simple as possible, in particular without the use of appropriate tools can be solved. From the WO 2006/037572 A1 For this purpose, a recessed ceiling light is known in which a special closure arrangement is provided which is effective between a housing frame and a functional frame for holding a cover plate. The central component of the closure arrangement here is a wire spring, which forms locking elements at their end regions, which interact with a locking receptacle in the functional frame. The spring and the latching receptacle are designed such that latching and releasing of the functional frame takes place in each case by exerting pressure on the frame in its closing direction. By means of this so-called push-push closure arrangement, a particularly simple fastening and releasing and the functional frame is made possible.

The German Offenlegungsschrift DE 103 60 948 A1 shows a locking connection, which acts between a pivotable functional frame of a lamp and a housing frame. The locking connection is formed from a wire spring together with counter element. However, this wire spring has an end portion, which is pivotally mounted in a gate of the housing frame and serves as a locking element for receiving loads. The locking element continues to cooperate with a backdrop of the functional frame and is guided by it so that the pivotal movement predetermined by the housing frame causes a push-push locking connection with the functional frame. Furthermore, it is also shown that the functional frame can be a reflector frame. The wire spring is positively inserted in a certain fixing area in a specially shaped recess of the housing frame, so that the wire spring is fixed in connection of the housing frame with the lamp housing. Furthermore, an end region opposite the locking element is used to achieve a bias for pivoting the functional frame relative to the housing frame.

The German Offenlegungsschrift DE 10 2004 048 484 A1 shows a lamp with an effective between housing frame and functional frame closure assembly. The closure assembly has at least one wire spring, with two formed in the end regions of the wire spring locking elements. The locking elements cooperate with a respective detent receptacle in the functional frame to attach the functional frame to the housing or housing frame or to solve this. The locking element continues to cooperate with a backdrop of the functional frame and is guided by it so that a movement of the functional frame upwards in the direction of the housing requires a push-push locking connection with the functional frame.

The object of the present invention is to improve, on the basis of the abovementioned prior art, the possibilities for fastening a corresponding frame element to a recessed luminaire.

The object is achieved by a luminaire having the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.

The solution according to the invention is again based on the idea of providing a closure arrangement with a latching mechanism in order to enable a releasable attachment of a frame element to a luminaire housing. However, according to the invention, the locking mechanism now has one solid latching hook on which cooperates with a counter element and is arranged such that it is movable between a latching position and a release position, wherein additionally a spring element is provided, via which the latching hook during the fastening of the inner frame to the lamp housing in the latching position and during the removal of the inner frame is biased by the lamp housing in the release position.

According to the invention, a luminaire, in particular a recessed luminaire for ceilings and / or walls is provided with a luminaire housing, which is intended for mounting on or in a wall or ceiling and for receiving bulbs, wherein the luminaire further an inner frame in particular for Holder of optical elements, which is at least partially detachable from the housing and connected via a closure assembly in a mounting position with the housing, and wherein the closure assembly comprises a latching mechanism, via which the inner frame is locked in the mounting position with the housing and its locking tool-free solvable is. According to the invention, it is provided that the latching mechanism has a solid latching hook, which cooperates with a counter element and movably arranged such that it is movable between a latching position and a release position, wherein the latching mechanism additionally comprises a spring element, via which the latching hook during the fastening of the Inner frame is biased on the lamp housing in the locked position and during the removal of the inner frame of the lamp housing in the release position. In particular, the latching hook can be mounted pivotably.

The fact that instead of a spring element now a solid latching hook is used for releasably connecting the inner frame to the lamp housing, the connection between the housing and the inner frame is improved. This is particularly important because the locking mechanism when installing the lamp in a ceiling must also completely absorb the weight of the frame with the attached elements. By using the solid latching hook, inner frames with optical elements can now be fastened to the luminaire housing, which have a significantly higher weight than was hitherto possible. Even with lights with a relatively large light exit opening and thus an exit disc whose weight is not irrelevant, accordingly, a reliable attachment of the mounting frame is made possible. By the additional spring, via which the latching hook is biased during the fastening of the inner frame to the lamp housing in the locking position and during the removal of the inner frame of the lamp housing in the release position, in this case is the Improved operation of the locking mechanism. In contrast to the solutions known from the prior art, a more reliable locking mechanism is thereby provided in the present invention.

The latching hook of the latching mechanism according to the invention is preferably arranged on the housing or the inner frame and cooperates with the arranged on the opposite element, so the inner frame or the housing counter element. The counter element can in this case on the one hand have a latching projection for latching with the latching hook in the latching position and on the other hand a guide slot, which serves for transferring the latching hook from the latching position to the release position and vice versa. In this case, the latching hook can cooperate in particular with the counter element, the latching and releasing of the inner frame takes place in each case by applying pressure to the inner frame in its closing direction. Accordingly, in the case of the solution according to the invention, fastening and releasing of the frame is preferably effected with the aid of a particularly convenient push-push closure arrangement. The frame is preferably designed such that it is arranged substantially in the assembly position within the housing. In particular, a form-fitting arrangement would be conceivable which leads to a particularly visually appealing appearance of the luminaire.

The frame can be completely detached from the housing, in which case a latching mechanism is preferably formed on at least two opposite sides of the housing. It would also be conceivable, however, to provide the latching mechanism only on one side of the frame and to connect it on the opposite side via a hinge pivotally connected to the lamp housing. The frame can not be completely removed in this case, but at least be pivoted so that the interior of the lamp is accessible to the bulbs.

As already mentioned, the inner frame is preferably used to hold light-influencing elements. These may, for example, at least one teillichtdurchlässige cover or other light influencing element for light output act. A reflector may also be arranged on the inner frame.

Fig. 1 und 2

verschiedene perspektivische Ansichten einer erfindungsgemäßen Deckeneinbauleuchte mit einem Gehäuse sowie einem daran lösbar angeordneten Innenrahmen;

Fig. 3

die erfindungsgemäße Leuchte in einem Zustand, in dem der Innenrahmen von dem Gehäuse entfernt wurde;

Fig. 4

eine Einzelansicht des bei der erfindungsgemäßen Leuchte zum Einsatz kommenden Rastmechanismus;

Fig. 5a - 5d

Ansichten der verschiedenen Komponenten des erfindungsgemäßen Rastmechanismus und

Fig. 6a - 6f

die Stellung der einzelnen Komponenten des Rastmechanismus beim Befestigen und Lösen des Innenrahmens an bzw. von dem Leuchtengehäuse.

Below, the solution according to the invention will be explained in more detail with reference to the accompanying drawings. Show it:

Fig. 1 and 2

various perspective views of a ceiling recessed luminaire according to the invention with a housing and an inner frame detachably arranged thereon;

Fig. 3

the lamp according to the invention in a state in which the inner frame has been removed from the housing;

Fig. 4

a single view of the coming in the lamp according to the invention latching mechanism;

Fig. 5a - 5d

Views of the various components of the locking mechanism according to the invention and

Fig. 6a - 6f

the position of the individual components of the locking mechanism when attaching and detaching the inner frame to or from the lamp housing.

The Fig. 1 and 2 show views of an inventively designed recessed ceiling luminaire, which forms a so-called downlight. It should be noted, however, that the invention is not necessarily limited to such recessed lights. The detent mechanism described in more detail below could also be used in luminaires, for example in the case of surface-mounted luminaires, in which a frame part for supporting additional optical elements is to be fastened within a luminaire housing.

The recessed luminaire, generally designated by the reference numeral 1, initially has a box-shaped luminaire housing 2, which delimits a light exit opening at its front end. At this front side further a laterally projecting frame 3 is formed, which rests in the assembled state of the housing 2 on the underside or outside of the ceiling or wall, while the remaining housing extends through a ceiling or wall opening therethrough. By means not described in detail fasteners while the housing 2 is attached to the wall or ceiling. The housing 2 is used in particular for receiving bulbs and of Operating devices for operating the lamps. At the back of the housing 2 cooling fins 4 are formed, which serve to dissipate the heat emitted by the lamps.

Towards the front, the housing 2 should be closed as possible by a transparent cover, on the one hand to allow a light output, on the other hand to prevent the ingress of dust or dirt and moisture. On the other hand, it must be possible to obtain access to the interior of the luminaire during maintenance work in order, for example, to replace the luminous means. Since this is possible in the installed state of the lamp housing 2 only from the front, the cover is not directly connected to the housing 2. Instead, an inner frame 10 is used for this purpose, on which the - not shown in the figures - cover plate is arranged and which can be detachably attached to the housing 2. The inner frame 10 can also be used to hold further optical elements - for example, a reflector - are also used, via which the light output of the light emitted by the bulbs light is affected.

According to the invention, the inner frame 10 is now connected to the luminaire housing 2 via a closure arrangement, which enables a simple release of the inner frame 10 from the housing 2. In this way, access to the interior of the lamp housing 2 can be obtained.

The closure arrangement is designed in the present case such that a complete release of the inner frame 10 is made possible by the luminaire housing 2. For this purpose, two locking mechanisms are provided on two mutually opposite sides of the lamp housing 2, with the aid of which the inner frame 10 can be latched to the housing 2. The latching mechanisms are designed such that by applying pressure to the inner frame 10 in the direction of the housing 2 in each case a latching or releasing the latching takes place. By means of this so-called push-push mechanism, a particularly simple and, in particular, tool-less fastening and detachment of the frame 10 is made possible. As in Fig. 3 is shown schematically, it is only necessary that the frame 10 is placed or pressed respectively in the arrow direction on the lamp housing 2. The this enabling special embodiment of the locking mechanisms will be explained below with reference to the other figures.

Fig. 4 shows the essential components of the latching mechanism 30, which on the one hand to a latching hook 35 and on the other hand to a with the Latch hook 35 cooperating counter element 40 is. The latching hook 35 is fastened by means of a fastening element 50 on a side wall of the lamp housing 2, while on the other hand the counter-element 40 is formed on an arm 11 protruding from the inner frame 10. In principle, however, a reversed arrangement of these components would be conceivable. The latching hook would then be arranged on the inner frame.

This in Fig. 5a plate-shaped fastener 50 shown in more detail has to first hold a laterally projecting pin 51 for holding the latching hook 35. The pin 51 is divided into two and has at its ends laterally projecting projections 52 which protrude laterally after passing through an opening formed in the latching hook 36, so that the latching hook 35 fixedly mounted on the pin 51 and accordingly aligned about a perpendicular to the fastener 50 Axis is pivotable. Furthermore, a pin 37 is further formed on the latching hook 35, which engages in an arcuate slot 53 on the fastening element 50, whereby the pivoting movement of the latching hook 35 is limited to a certain range. Fig. 5d further shows a wing-shaped spring 55, which as shown in FIG Fig. 4 is arranged at the opposite end of the slot 53 of the fastening element 50 and this engages with their end portions 56 in corresponding recesses 54. This spring 55, in particular its central bulge 57 cooperates with a further projection 38 formed on the latching hook 35. In the mounted state of the latching hook 35 on the fastening element 50, this has the consequence that the latching hook 35 is biased either in a locking position or in a release position, wherein a change between the two positions is achieved in that the latching hook 35 is pivoted so that the Projection 38, the bulge 57 happens. At the front end of the latching hook 35, a hook element 39 is finally formed, which cooperates in a special way with the counter-element 40 in order to realize the push-push mechanism.

The counter element 40 itself is configured such that on the one hand a latching projection 41 and on the other hand an arcuate guide slot 42 is formed. Both elements - latching projection 41 and link 42 - interact with the latching hook 35 in the manner described below. For this purpose, corresponding through holes are formed in the housing 2 of the lamp 1, through which the arms 11 of the frame 10 engage, so that the counter element 40 - as in the Fig. 1 and 2 shown - comes into contact with the latching hook 35.

If the inner frame 10 is now to be fastened to the housing 2, then initially, as shown in FIG Fig. 6a the inner frame 10 mounted on the front of the housing 2 on this, in such a way that the arms 11 pass through the openings formed in the housing 2 and accordingly the counter element 40 comes into abutment against the hook member 39 of the latching hook 35, which is to this Time is in a position in which it is biased by the spring 55 in the rest position (in the illustration to the left).

By the oblique bottom 41a of the locking projection 41 in this case the hook 35 is easily deflected ( Fig. 6b ), but only to a small extent, so that it is still biased by the spring 55 in the rest position. If now the inner frame 10 is pressed further in the direction of the housing 2, the hook element 39 of the hook 35 will pass the latching projection 41 at some point in time and then the hook 35 will pivot further outwards due to the spring force, so that the hook element 39 will be the projection 41 engages behind and the latching hook 35 is now locked with the counter-element 40 ( Fig. 6c ). Accordingly, without using a tool, the inner frame 10 can be latched to the luminaire housing 2 in this way. The weight of the inner frame 10 is in this case taken up solely by the latching hook 35, so that even in the event that the inner frame 10 with the optical elements attached thereto has a greater weight, a reliable support is guaranteed.

If the inner frame 10 is to be removed again from the housing 2, it is only necessary to press the frame 10 further in the direction of the housing 2. This has the consequence that due to the arcuate configuration of the guide slot 42 of the latch hooks 35 now in the release position, ie in the illustration in Fig. 6d is pivoted to the right. The pivoting movement is so great that the projection 38 of the latching hook 35, the protrusion 57 of the spring 55 happens and now the latching hook 35 is biased to the release position, ie to the right. Furthermore, since the hook element 39 no longer engages behind the projection 41, the inner frame 10 can be removed from the housing 2. Here, the lower inclined contact surface 43 of the guide slot 42 further ensures that just before the final release of the inner frame 10 of the housing 2, the latching hook 35 is in turn pivoted to the left and the projection passes the bulge 57 of the spring 55 ( Fig. 6e ). When the next fixing of the inner frame 10 to the housing 2, therefore, the latching hook 35 is already automatically back in the right, in Fig. 6f shown position.

From the above description, it can be seen that the closure mechanism according to the invention enables a particularly simple fastening and detachment of the inner frame 10 to and from the luminaire housing. Due to the special design of the locking mechanism, a particularly secure mounting of the frame on the housing is also possible.

In this case, as an alternative to the illustrated embodiment, it would also be conceivable to form the latching mechanism only on one side of the frame and to connect the frame on the opposite side to the housing via a hinge. In this case, then the frame would not be completely removed from the housing but only solved on one side and then pivoted, so that in turn the interior of the lamp would be accessible.

Claims (10)

1. A luminaire (1), in particular a recessed luminaire for ceilings and/or walls having a luminaire housing (2), which is provided for installing on or in a wall or ceiling as well as accommodating lighting means,
   as well as having an inner frame (10) in particular for holding optical elements, which is at least partially detachable from the housing (2) and is connected to the housing (2) in an installation position by means of a locking arrangement,
   wherein the locking arrangement has a latch mechanism (30), by means of which the inner frame (10) is latched in the installation position to the housing (2) and its latching is detachable without tools,
   and wherein the latching mechanism (30) has a solid latching hook (35), which interacts with a counter-element (40) and is movably arranged in such a manner that the latching hook can be moved between a latching position and a release position,
   characterized in
   that the latching mechanism (30) additionally has a spring element (55), by means of which the latching hook (35) is pretensioned during the fastening of the inner frame (10) to the luminaire housing (2) into the latching position and during the removal of the inner frame (10) from the luminaire housing (2) into the release position.
2. A luminaire according to Claim 1,
   characterized in
   that the latching hook (35) is pivotably mounted.
3. A luminaire according to Claim 1 or 2,
   characterized in
   that the latching hook (35) is arranged on the housing (2) or the inner frame (10) and interacts with the counter-element (40) arranged on the inner frame (10) or the housing (2).
4. A luminaire according to Claim 3,
   characterized in
   that the counter-element (40), on the one hand, has a latching projection (41) for latching with the latching hook (35) in the latching position as well as, on the other hand, a slotted guide (42) for transferring the latching hook (35) from the latching position into the release position and vice versa.
5. A luminaire according to Claim 4,
   characterized in
   that the latching hook (35) interacts with the counter-element (40) in such a manner that latching and release of the inner frame (10) takes place in each case by exerting pressure on the inner frame (10) in its closing direction.
6. A luminaire according to any one of the preceding claims,
   characterized in
   that the inner frame (10) is arranged in the installation position substantially within the housing (2).
7. A luminaire according to any one of the preceding claims,
   characterized in
   that the inner frame (10) in the installation position is arranged in a positive-locking manner in the housing (2).
8. A luminaire according to any one of the preceding claims,
   characterized in
   that the inner frame (10) is completely detachable from the housing (2), wherein a latching mechanism (30) is provided on at least two mutually opposite sides of the housing (2).
9. A luminaire according to any one of the preceding claims,
   characterized in
   that a light-influencing element, in particular an at least partially light-permeable cover disc, is arranged on the inner frame (10).
10. A luminaire according to any one of the preceding claims,
    characterized in
    that a reflector is arranged on the inner frame (10).

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