EP1725810B1 - Light comprising a housing that consists of two lateral sections - Google Patents

Abstract

The invention relates to a light (1) comprising an elongated housing (2), the latter (2) being equipped with connection means for at least one bulb. To simplify (1) the construction of said light (1), the housing (2) is configured from two elongated lateral parts (11), each having an upper and a lower longitudinal edge (11a, 11b). According to the invention, sections of the upper longitudinal edges (11a) are interconnected and the lower longitudinal edges (11b) run at a distance from one another and delimit a lower light emission opening (5).

Description

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

Such a light is off DE 299 01 397 U known.

A luminaire of conventional design has a housing that a ceiling wall and at least two of the ceiling wall, for. has opposing downwardly extending side walls. As a rule, two further side walls are provided, which are connected to the first side walls and stabilize the housing. In this known construction, at least the top wall and the side walls are required. This leads because of the required number of components or component sections to a considerable effort in terms of size, weight, cost of materials, manufacturing and assembly or pre-assembly.

The invention has for its object to simplify a lamp of the type specified. This applies in particular with regard to a reduction of the components or component sections.

This object is solved by the features of claim 1. Advantageous developments of the invention are described in the appended subclaims.

In the luminaire according to the invention according to claim 1, the housing is formed by two elongate side parts, each having an upper and a lower longitudinal edge, wherein the upper longitudinal edges are partially interconnected, and wherein the lower longitudinal edges are spaced apart and define a lower light exit opening.

A lamp according to the invention is of a smaller size, because at least in the region of at least one longitudinal section in which the upper longitudinal edges are connected in sections, the lamp or the housing has a smaller width. It is thus not only reduces the space, but also the cost of materials.

In addition, also in the region of the at least one longitudinal section in which the upper longitudinal edges are connected in sections, a ceiling wall omitted, which also leads to a reduction in space, weight and material cost.

Another advantage of the embodiment of the invention is that the side parts are uneven or not parallel to each other, e.g. roof-shaped or can be arranged, which leads to a greater stability compared to a conventional box shape.

Due to the distance between the lower, preferably straight longitudinal edges of the side parts of the above advantages, a lower light exit opening is created over which a sufficiently large housing space can be realized, in which a reflector, connecting means for at least one associated lamp and holding means for the reflector and the connection means can be arranged. The connection of the side parts is preferably done by gluing. It is advantageous to form mutually parallel adhesive surfaces to achieve a planar and stable connection.

The side parts can be easily formed by plates which are flat or deformed transversely to their plane in order to obtain the partial connection at the upper longitudinal edges. In this case, the upper longitudinal edges may lie directly against each other or they may be at a distance from each other, in the holding means, e.g. arranged for the reflector and / or the connection means and / or support members for attaching or suspending the lamp and preferably can be connected simultaneously with the side panels.

The invention is particularly well suited for an elongated and straight extending luminaire, which requires greater stability, which is due to the length.

In the at least one longitudinal region of the housing, in which the upper longitudinal edges are not connected to one another, the longitudinal edges can be at a distance from one another, whereby an upper housing opening is formed, which is advantageous for various reasons. On the one hand, an interior enlargement is thereby created, which extends only over a partial region of the housing. The upper housing opening can also be exploited to arrange an operating device or other components of the lamp in their area in the housing. It is also possible, an inner housing with an example U-shaped Cross-sectional shape to be arranged below the upper housing opening in the housing, which not only leads to a stabilization of the housing or the holding means, but in which the operating device can be alternatively arranged protected.

The above-described upper housing opening can also form an upper light exit opening. As a result, an indirect lighting can be realized.

The side panels are preferably made of wood or Eternit. Side parts made of these materials are not only suitable because of the existing construction, but they also characterize a special design of the lamp.

The light exit opening of a luminaire is replaced by, e.g. bounded opposite housing walls. In this case, it is endeavor to form the edge surrounding the light emission opening as narrow as possible in order to achieve not only a small construction but also an acceptable appearance of the luminaire.

In luminaires with straight side walls and in particular in luminaires with elongated side walls, the stability of the side walls is relatively low, especially when the edges surrounding the light exit opening are to be kept narrow.

The invention is based on the further object to stabilize a lamp specified in the preamble of claim 14 way.

This object is solved by the features of claim 14. Advantageous developments of the invention are described in the appended subclaims.

In the luminaire according to the invention as claimed in claim 14, the light influencing means are connectable to the lower edge regions of at least two housing walls such that the light influencing means form a housing strut acting parallel to the light exit opening and acting inwards and / or outwards transversely to the housing walls.

In this luminaire according to the invention, at least two housing walls are connected to one another and stabilized by the light influencing means. These housing walls are preferably housing walls which lie opposite one another, wherein the embodiment according to the invention is particularly suitable for elongated housing walls which are relatively unstable by nature. This stabilization occurs without a significant increase in the expense of material and / or construction. The housing strut can be formed in a simple construction by arranged between the light influencing means and the housing walls pin connections. In this case, it is particularly advantageous to design the housing strut or the journal connections in such a way that they arrive simultaneously in their operative connection when the light-influencing means are inserted, so that a special joining of the strut components or journal connection components is eliminated.

A simple and easy to handle installation of the light influencing means and preferably also the bracing is achieved when the light influencing means are connected by a latching device with the housing.

In order to achieve a rational and cost-effective production, it is advantageous to connect at least two connecting parts of the lamp by an adhesive connection with each other. This requires except the adhesive no additional connection element for connecting the connecting parts, for. B. no connecting screw with associated holes.

In an adhesive bond, however, the risk of an unwanted solution z. B. due to a faulty adhesive bond, material stresses or shocks.

In such luminaires, which are set up for positioning in the upper area of a room, an adhesive bond therefore represents an uncertainty factor, since it can not be ruled out that after loosening the adhesive bond, at least part of the luminaire can fall down and cause damage to people or objects , This disadvantage is especially true for a lamp that is suitable for cultivation, z. B. on a wall or a ceiling, or is set up for hanging.

The invention is therefore based on the further object of simplifying and / or rationalizing the connection of at least two connecting parts in a luminaire described in the preamble of claim 27 and to improve the security against falling of at least one connecting part.

This object is solved by the features of claim 27.

In the luminaire according to the invention according to claim 27, the two connecting parts are connected to one another directly or indirectly by gluing and connected to each other by an additional securing device. This ensures that even after an unwanted release of the adhesive bond, the dissolved connection part does not fall.

For such a security device, a form-locking effective security device is particularly well, in particular such a security device whose effectiveness is based on a mutual entanglement of the connecting parts. Namely, such a hooking device is not only easy and inexpensive to produce but also assembles and brings into the hooking position. In addition, a hooking device can be handled easily and disassembled quickly.

In the context of the invention, a prescribed adhesive bond and / or securing device for bonding and / or securing of two side walls of the housing of the lamp are used, which are glued directly to each other or indirectly glued together in the presence of an intermediate part. However, the securing device according to the invention can also be arranged between other connecting parts of the lamp, z. Example, between the housing or a side wall of the housing and secured thereto by the adhesive connection spacers or rails carrying fasteners or Verrastungselemente that are parts of a connecting device or latching device for connecting or locking a light influencing element of the lamp.

In further subclaims features are included that lead to further simple and small constructions that increase stability, improve the assembly or disassembly of the lamp or its items or simplify the attachment or suspension of the lamp itself and improve.

Fig. 1

eine erfindungsgemäße Leuchte in perspektivischer Darstellung;

Fig. 2

die Leuchte in der Stirnansicht;

Fig. 3

die Leuchte in einem teilmontierten Zustand in perspektivischer Darstellung;

Fig. 4

einen Endbereich der Leuchte in einem anderen teilmontierten Zustand in perspektivischer Darstellung;

Fig. 5

die Leuchte in einem weiteren teilmontierten Zustand in perspektivischer Darstellung;

Fig. 6

eine erfindungsgemäße Leuchte in abgewandelter Ausgestaltung in perspektivischer Darstellung;

Fig. 7

die Leuchte nach Fig. 6 in der Stirnansicht;

Fig. 8

einen Endbereich der Leuchte im teilmontierten Zustand in perspektivischer Darstellung;

Fig.9

eine erfindungsgemäße Leuchte gemäß Fig. 2 in abgewandelter Ausgestaltung in der Stirnansicht;

Fig. 10

eine erfindungsgemäße Leuchte gemäß Fig. 7 in abgewandelter Ausgestaltung in der Stirnansicht.

In the following, advantageous embodiments of the luminaire will be explained in more detail on the basis of preferred exemplary embodiments and drawings. Show it:

Fig. 1

a lamp according to the invention in a perspective view;

Fig. 2

the lamp in the front view;

Fig. 3

the lamp in a partially assembled state in perspective view;

Fig. 4

an end portion of the lamp in another partially assembled state in perspective view;

Fig. 5

the lamp in a further partially assembled state in perspective view;

Fig. 6

a lamp according to the invention in a modified embodiment in perspective view;

Fig. 7

the light after Fig. 6 in the front view;

Fig. 8

an end portion of the lamp in the partially assembled state in perspective view;

Figure 9

a luminaire according to the invention Fig. 2 in a modified embodiment in the front view;

Fig. 10

a luminaire according to the invention Fig. 7 in a modified embodiment in the front view.

The particular off Fig. 2 removable main parts of the lamp designated in its entirety by 1 are a housing 2, one or two mutually oppositely arranged holding means 3 with connection means 3a for at least one lamp, not shown, in particular a straight extending gas discharge tube, a light influencing means 4, in the region of a radiation opening. 5 the housing 2 is arranged or the radiating opening 5 is formed or limited, and fastening means 6 for releasably securing the light influencing means 4 to the housing 2, wherein the holding means 3 can also serve for releasably holding the lamp 1 on a room wall, in particular on a ceiling.

The lights 1 of the present embodiments are preferably ceiling lights, in particular suspended lights. Deposits connectable to the holding means 3 are not shown and may be e.g. be formed by suspension wires, suspension rods or suspension chains with anchoring parts. The emission opening 5 is arranged on the side facing away from the holding means 3 and suspension means. In the case of a ceiling light, the emission opening 5 is arranged at the bottom. From it occurs in the functional operation of the lamp 1, the light illustrated by a resulting beam 8 for direct illumination of the existing space 9 from.

In all embodiments, the lamp 1 is an elongated lamp 1, which preferably extends straight, and may be a single luminaire or a longitudinal portion of a light string formed by a plurality of lights 1 arranged one behind the other.

Essential components of the elongate housing 2 are two elongated side parts 11 which are arranged and shaped mirror-symmetrically with respect to a longitudinal center plane E of the luminaire 1 or of the housing 2. Therefore, only one side part 11 will be described below. It is an essential feature of the side part 11 that it consists of an upright arranged plate-shaped flat material with upper and lower longitudinal edges or longitudinal edges 11a, 11b, wherein at least one longitudinal edge portion 11a1, in particular the end-side longitudinal edge portions 11a1, with respect to at least one remaining longitudinal edge portion 11a2 inside, ie to the vertical longitudinal center plane E out, is offset. In Fig. 1 are the preferably parallel offset longitudinal edge portions with 11a1 and their offset inwardly designated by a. The remaining non-offset longitudinal edge portion 11a2 is preferably located vertically above the lower longitudinal edge 11b. The associated, here middle and vertically or parallel to the vertical longitudinal center plane E extending side portion is designated 11c. The partially inwardly offset end portion of the side parts 11 is denoted by 11c1. With regard to a vertical transverse center plane, the luminaire 1 or the housing 2 is preferably likewise mirror-symmetrical.

As in particular from Fig. 1 it can be seen, the transition between the longitudinal edge portions 11a1 and 11a2 is rounded S-shaped.

In particular Fig. 2 can recognize, the side part 11 extends in the region of the longitudinal edge portions 11a1 via a designated 11d upright edge region vertically. The side part region 11f extending downward from this edge region 11d may be rounded or oblique or, in the exemplary embodiment, S-shaped to the lower longitudinal edge 11b. Preferably, this edge region 11f extends to a lower edge region 11e which extends substantially vertically and parallel to the vertical longitudinal center plane E and whose height may be equal to or greater than the height of the upper edge region 11d. The housing 2 is tapered by the inwardly offset wall portions of the side walls to a dimension b, which may be equal to or greater than the sum of the thicknesses c of the side part walls, which will be described. The lateral and end free spaces formed by the taper are indicated at 12. The length of the longitudinal edge portions 11a1 is equal to or smaller than the length of the longitudinal edge portions 11a2.

The two with respect to the vertical longitudinal center plane E arranged in mirror image and uneven shaped side parts 11 are connected directly or indirectly in the region of the longitudinal edge portions 11 a1, preferably insoluble connected to each other, for example by welding or by gluing, as is the case in the embodiments. The adhesive bond 13 preferably extends over the entire edge region 11d, which contributes to the stability of the connection. In order to additionally stabilize the adhesive joint 13, the adhesive surface is roughened on one or both parts 11, 21a to be joined together. For example, grooves or grooves can be incorporated into the respectively associated adhesive surface. The grooves or grooves may extend straight or undulating in the longitudinal direction.

The housing 2 described so far can thus consist only of the two side parts 11. The lower longitudinal edges 11b preferably extend straight.

The non-inwardly offset longitudinal edge portions 11a2 define an upper housing opening 14 which extends longitudinally over the side wall portion 11c, which in the embodiment is a central housing portion disposed between the longitudinal edge portions 11a1. This housing opening 14 creates space in the housing 2 in which e.g. a control gear can be arranged. At the longitudinal ends of the housing opening 14 connecting elements for fastening means or suspension means of the lamp can be arranged.

As in particular in Fig. 2 can be seen, limit both inwardly offset side wall portions 11f a lower dome-shaped housing part space 15, in the lower region of the light influencing means 4 is held by the fastening means 6 mounted from below and dismountable. Above the light influencing means 4, the at least one holding means 3 with the connection means 3a for at least one lamp, not shown, in the form of a gas discharge tube is arranged in each end region 11c1. Above the connection means 3a formed by electrical connection elements or contacts 16 for the lamp on the holding means 3, a dome-shaped or tunnel-shaped reflector 17 is arranged, which extends substantially over the entire length of the housing 2 and directly or indirectly to the housing part space 15 limiting Side wall portions 11f, preferably on the holding means 3, is held and reflected in the sense of a head reflector down. In the embodiment, the holding means 3 is formed in the form of a longitudinally extending upper rail 21, which is connected to the side parts 11. For this purpose, a central vertical rail web 21a preferably extends, which extends upwards into the region of the edge regions 11d and is connected to them preferably in a non-detachable manner. The length of the rail 21 and the rail web 21 a may substantially correspond to the length of the side parts 11 or be shorter. The rail web 21a is preferably glued flat with the edge regions 11d, wherein its side surfaces roughened or may have the grooves or grooves already described in order to increase the strength of the arranged on both sides of adhesive bond 13. A correspondingly formed and arranged upper rail 21 is arranged in the other end portion 11c in the upper housing part space 15 of the housing 2. If the rail web 21a is arranged between the mutually transversely opposite edge regions 11d, the dimension b measured via the inwardly offset side walls is increased by the thickness of the rail web 21a.

The rail web 21a is formed in its lower edge region with a downwardly opening groove 22, which forms a screw, are screwed into the mounting screws 23 from below, the connecting means 3a and the terminal contacts 16 having socket webs 3b and / or the reflector 17 and / or pass through the bottom 25a of an inner housing 25 to be described in each case in a through hole. It is also possible to lock the frame webs 3b by latching elements 3c projecting upwards from them and indicated at the bottom 25a, which can be inserted from below into corresponding latching holes in the bottom 25a and latch behind the bottom 25a.

The profiled rail 21 preferably has two laterally projecting support legs 21b for stabilizing the floor 25a, which are directed downwards and whose lower edges lie at a height with the lower edge of the rail web 21a. The bottom 25a can thus be supported on the support legs 21b upwards.

The inner housing 25 has a U-shape with side walls 25b, which extend vertically upwards from the side edges of the bottom wall 25a up to a preferably plate-shaped cover 26. The side walls 25b are preferably sized smaller than the side parts 11. In addition, the width of the lid is smaller than the transverse distance of the side parts 11 from each other in the side portion 11c, so that the lid 26 fits into a recessed position, as it Fig. 2 shows. In this case, the cover 26 not only covers the inner housing 25 but also the upper housing opening 14. In the end regions of the inner housing 25, the side walls 25b are recessed approximately rectangular except for small side webs 25c projecting from the bottom 25a, whereby free spaces 27 are created into which the side wall regions 11d are offset inwards.

The retaining means 3 formed by the rail 21 can also be used to attach or hang the lamp 1 on the wall or ceiling. At the Embodiment, a connecting part 28 is connected to the holding means 3 and the rail 21, with the supporting parts, not shown, for attaching or suspending are connectable. The connecting part 28 is preferably connected in a form-fitting manner and in the longitudinal direction of the luminaire 1, preferably infinitely adjustable, to the holding means 3. For this purpose, the profile of the rail 21 can be exploited for a positive connection, for example, characterized in that the connecting part 28 engages positively in an undercut of the profile and / or positively engages behind a projection of the profile. In the exemplary embodiment, the connecting part 28 has a central and downwardly opening slot 28a, which has a Schlitzerweiterung 28b at a distance from its lower mouth with which it engages over a Stegerweiterung 21c of the rail web 21a form fit. The connecting part 28 may be positively fitted together by a directed in the longitudinal direction of the lamp 1 movement with the rail 21 and at the same time adjusted and adjusted in the correct axial position between the cover 26 and the staggered upper longitudinal edges 11a.

In the exemplary embodiment, the light-influencing element 4 is formed by a raster component having raster elements, for example a lamella raster, with reflective raster inner surfaces, preferably by a cell grid. Such raster components are prior art and therefore need not be described in detail. Regarding a cell grid is on the DE 101 51 958 A1 refer to the Applicant, in which a luminaire is shown and described with a cell grid. Such a cell grid is also referred to as a top reflector.

The raster component or cell grid 31 extends over the entire length of the housing 2 with opposite raster side walls 31a, between which raster cells 31b in a plurality of rows, e.g. in two rows, are arranged.

The cell grid 31 has on the upper side a longitudinally and centrally extending trough 32. The connection means 3a for the lamp are arranged with respect to the trough 32 at such a height that the lamp is at least partially recessed in the trough 32. As a result, not only the light irradiation in the grid cells 31b is improved but also the construction height is reduced. In such an at least partially recessed arrangement of the connection means 3a, it is advantageous to bend the inside reflection walls 31c of the raster side walls 31a in their upper region or in the upper half more than in the lower region, whereby a more effective reflection is achieved. The cell grid 31 has at its upper edge on the shape of the trough following collar 31d.

Instead of a grid component or cell grid 31, it is also possible to arrange a light influencing means 4 of a different design, e.g. a translucent panel, in particular with anti-glare properties.

The light influencing means 4 is detachably insertable from below between the side parts 11. The fastening means 6, which are preferably arranged in the lower region of the side parts 11 inside and which are preferably parts of a latching device 36, serve for holding. This has on both sides on laterally elastically ausbiegbaren spring legs 36a formed locking lugs 36b, which engage behind a latching projection in the latching position and spring into a latching recess 36c. In order to achieve an automatic rebound when inserting the light influencing means 4, the detents 36b of the nose surface have oppositely disposed rounded or inclined insertion surfaces 36d, which cause an automatic bending out of the spring legs 36a when they are inserted. According oblique or rounded and the locking surface 36e of the locking lug 36b is formed so that by a manual, the weight of the light influencing means 4 substantially exceeding tensile force, the light influencing means 4 is released from its latching, the spring legs 36a are bent automatically and the locking lugs 36b, the light influencing means 4 and then spring back to their latching ready position.

In the embodiment, the spring legs 36a are attached at their lower ends directly or indirectly to the inside of the lower portion of the associated side part 11, wherein the spring legs 36a extend with their free ends upwards.

The latching device designated in its entirety by 36 has on both sides mutually mirror-inverted latching elements between the light influencing means 4 and the associated side parts 11.

In the embodiment, the side parts 11 are preferably made of non-metallic material, such as wood, Eternit or plastic. In particular, if the side parts 11 consist of the aforementioned materials or if the side parts 11 are to have no fastening means on their outer sides or if the side parts 11 are made of thin material, eg sheet metal, it is advantageous to the fastening means 6 to be arranged on spacers 37 which are attached to the inner sides of the side walls 11 in particular in the lower edge regions 11e, preferably by gluing, s. Adhesive connection 13a, which can be roughened as described above or be straight or waved grooves. In this case, fastening means 6 arranged one behind the other in the longitudinal direction can be formed by a common intermediate piece 37 in the form of a longitudinally extending profile rail 37a. For fixing the base ends of the spring legs 36a may each be provided, for example, an upwardly open groove 37b in which, for example, the U-shaped bent base end of the spring leg 36a attached, in particular is clamped.

Since the side walls 11 are interconnected only in their upper region, it is advantageous to brace the side parts 11 in their lower region transversely or parallel to the light exit opening 5 with the light influencing means 4. For this purpose, on each side between the side members 11 and the light influencing element 4 arranged pin connections 38 may be provided with one connecting pin 38a at the one connecting part and the connecting pin 38a receiving pin recess 38b at the other connecting part. As a result, the lower ends of the side walls 11 are fixed to each other in the transverse direction by the light influencing means 4 and thus braced and stabilized. The pin recesses 38b are each in the opposite direction of insertion, here down, open. Therefore, the connecting pin 38a directed in the opposite direction, in this case upwards, is automatically inserted into the pin recess 38b when the light-influencing means 4 is inserted. In the exemplary embodiment, the pin recess 38b is arranged on the intermediate piece 37 or the profile rail 37a, and the connecting pin 38a is arranged on the light-influencing means 4.

The arranged on the light influencing means 4 mounting parts of the fastening means 6 are preferably preferably integrally formed on a fixed respectively on the facing side wall of the light influencing means 4 intermediate piece 39, wherein a plurality, for. B. two, in the longitudinal direction successively arranged intermediate pieces 39 may be formed by a common further rail 39 a. The intermediate pieces 39 and the profile rail 39a may be permanently attached to the associated side wall of the light influencing means 4, for example by gluing. In particular, in the case of a profiled rail 39a, the connecting pins 38a can be formed by a profiled groove 39b in the profiled rail 39a into which a pin recess 38b or groove delimits on the inside Profile web 38c on the intermediate piece 37 or on the rail 37a fitting fits from above.

The light-influencing means 4 preferably has at its lower end an approximately horizontally projecting flange 41, on which the intermediate pieces 39 or profile rails 39a can stand.

In particular, when the side panels 11 made of wood or Eternit, receives the lamp 1 is a particularly suitable for room lighting appearance.

At the front, the housing 2 or the housing subspaces 15 can be open. In this case, it is advantageous to form at least the light influencing means 4 or even the connection means 3 or the inner housing 25 so long that their front ends terminate substantially with the front ends of the side parts 11.

The Fig. 3 shows the lamp 1 with removed side panels 11, wherein the lower rail 37a and the other rail 39a are arranged on the non-visible or rear side lights, while missing on the visible side of the lamp 1, these two rails and the light influencing means 4 and the cell grid directly is visible. As Fig. 3 In addition, an electrical operating device 45 for the luminaire 1 can be arranged in the inner housing 25, for example on the floor 25a. Also, in this Fig. 3 two fastening screws 23 can be seen, which are arranged one behind the other in the longitudinal direction in the tapered end region of the housing 2.

In the rear end region of the housing 2 is in Fig. 3 the associated holding or connecting means 3, shown here in the form of the upper rail 21, mounted.

Fig. 4 shows in perspective a view facing the end of the housing 2, wherein the holding means 3 and the connection means 3a and the upper rail 21 for holding the lamp and / or a connecting part 28 for attaching or suspending the lamp 1 and on the visible side, the lower rail 37a are shown. The side walls 11 are dismantled and not visible.

Fig. 5 shows the lamp 1 also at distant side parts 11, wherein on the visible side, the further rail 39a and two longitudinally successively arranged fastening means 6 in the form of spring legs 36a are shown with locking lugs 36b. The spring leg 36a bearing lower rail 37a is not shown.

In the Fig. 6 to 8 a modified embodiment of the lamp 1 is shown, are provided in the same or comparable parts with the same reference numerals.

A first design difference of this lamp 1 is that the upper, inwardly offset edge portions 11d offset or molded with a smaller inclination of the side walls in the side wall portions 11f, so that the side parts 11 have a lower height and are made squat than the first Embodiment according to Fig. 2 , According to the embodiment Fig. 7 the width and the height of the housing 2 are approximately equal.

In addition, the upper portion of the upper rail 21 is formed with two, a transverse distance from one another having rail webs 21a1 in the form of an open-topped fork. In the fork recess an undercut longitudinal groove 21c1 is arranged instead of a Stegerweiterung 21c, in which a slider 28c of a connecting part 28 engages positively and is arranged displaceably in the longitudinal direction.

Another difference is that the ratio of the lengths of the edge portions 11a2 with respect to the edge portions 11a1 is larger. While in the embodiment according to Fig. 1 the edge portions 11a2 are equal to or only slightly larger than the edge portions 11a1, are according to Fig. 6 the edge portions 11a2 twice to about three times as long as the edge portions 11a1, wherein the housing 2 is preferably formed longer than the housing 2 in the embodiment according to Fig. 1 , In this embodiment, the length of the side portion 11c, for example, about 70% of the length of the housing 2 or the lamp amount. In the longer embodiment according to Fig. 6 the stability of the housing is ensured due to the above-described squat construction, which stabilizes the housing 2.

Another difference to the embodiment according to Fig. 2 is that the lamp 1 radiates indirectly effective light to the emission direction 8 side facing away. This is achieved in that the reflector 17 is partially translucent and the cover 26 translucent or partially translucent, in particular opal, so that light can radiate on the inside of the side members 11 upwards and can cause the indirect lighting. This function is also given if no cover 26 is present. It's also considered one Streupalette trained lid 26 advantageous to scatter the light and to avoid that are imaged on the ceiling strips.

A further difference may also be that the upper profile rails 21 extend into end-side recesses 26a of the cover 26. This not only increases the stability but also increases the longitudinal adjustment range for the connecting parts 28.

The partial translucent configuration of the reflector 17 may e.g. be achieved in that in particular in the area below the upper housing opening 14, a through hole 17a or juxtaposed holes in the reflector 17 are arranged, through which a portion of the light is emitted upwards.

In order to improve the light conduction of the indirectly effective light in the housing 2, two side reflectors 46 are arranged on both inner sides of the side parts 11, which extend from the lower edge region of the reflector 17 to the upper edge region of the respectively associated side part 11. Made of thin material e.g. made of sheet metal, existing side reflectors 46 may each consist of a voltage applied to the side wall of the associated side part 11 wall portion 46 a, the curved or preferably merges with an obtuse angle in a convergent inwardly and downwardly disposed wall portion 46 b in one piece. In the longitudinal direction of the lamp 1, the side reflectors 46 preferably extend over the entire length of the upper housing opening 14. The side reflectors 46 may be attached to the respective associated side part 11.

In the context of the invention, the lamp 1 according to Fig. 1 and 2 in a manner corresponding to the above-described embodiment as at the same time indirectly effective light 1 with z. B. same design features can be formed.

The above grooves in the adhesive surfaces of z. As light metal, especially aluminum, existing and preferably extruded rails 21, 37a and 39a can be attached during extrusion in a simple and cost-effective manner.

The embodiment according to Fig. 9 , in which the same or comparable parts are provided with the same reference numerals, differs from the exemplary embodiment Fig. 2 Mainly in that an additional mechanical securing device 51 is provided for such of two bonded together by the adhesive connection connecting parts, which in a unwanted solution of the adhesive bond 13 may fall down. Falling is prevented by the fact that the other connecting part is connected by the securing device 51 directly or indirectly to the housing 2 or an attachment of the same and therefore hold the unintentionally released connection part and can secure against falling.

The securing device 51 is preferably positively acting, that is, it has on the falling-vulnerable part on a securing element 51a, which engages over a securing element 51b of the securing device, preferably so hooked over and behind that a lateral slipping is prevented. The corresponding securing element 51b may be attached directly or indirectly to the housing 2, for. B. on a in the cavity 15 of the housing 2 arranged attachment which is disposed in the upper region of the cavity 15 and may be a supporting part of the connection elements 16 for the light source. In such cases, in which the securing device 51 is arranged laterally with respect to the vertical longitudinal center plane E of the luminaire 1, it is advantageous for improving safety to provide a securing device 51 on both sides of the longitudinal median plane E, the securing devices 51 preferably being arranged and formed in mirror image can.

The latter is according to the present embodiment Fig. 2 the case in which the securing device 51 serves to secure a connection part glued on the inside to the housing wall 2a for connecting the light-influencing element, wherein the securing device 51 is arranged on one side in the cavity 15 of the housing and opposite a mirrored arranged and formed securing device 51 is provided. The following description of the lamp 1 or securing device 51 according to the embodiment according to Fig. 9 is therefore limited to one side of the lamp 1. On the opposite side, the lamp 1 is at least in mirror image with respect to the securing device 51.

According to the embodiment Fig. 2 the securing element 51a is arranged on the intermediate piece 37 or on the profile rail 37a, preferably integrally formed thereon. It may be formed by a, preferably tapered, securing arm 51c projecting upwards from the upper end of the intermediate piece 37 and which may extend over the entire horizontal length of the intermediate piece 37. But it may also be a rod-shaped safety arm 51c, which protrudes in the middle length region of the intermediate piece 37 upwards, or it may be several z. B. two horizontal spaced from each other having rod-shaped Securing arms 51c may be provided. The safety arm 51c is bent or angled inwardly at its upper free end, preferably hook-shaped, so that the free end of the hook points downwards.

The securing element 51b is formed by the reflector 17 or arranged on this and formed in the embodiment by a lateral extension 17a, which preferably has an upwardly directed leg 17b, which is overridden by the hook shape of the securing arm 51c from the outside and behind. Thus, the reflector 17 may be formed integrally with the securing element 51b, which may be a bent part or an extruded part.

The hooking device 51 forming the hooking device is preferably formed so that when mounting the securing device 51, the form-fitting cross-locking elements 51a, 51b pass through the assembly movement in their Verhakungsposition. There are therefore no special assembly movements required. In the exemplary embodiment, in which the intermediate pieces 17 are adhesively bonded to the housing walls 2a and the side parts 11, the reflector 17 is moved through the housing opening into the cavity 15 into its fastening or screwing position. In this case, the lateral extensions 17a or leg 17b automatically reach under the securing elements 51a, in particular in their hook shape. In an unwanted solution of one or both spacers 37 remain this due to the attack on the reflector 17 in its suspended holding position in which they are secured and the light influencing means 4 and the grid 31 hold.

Claims (28)

1. Luminaire (1) with an elongated housing (2) and with connection means (3a), provided in the housing (2), for at least one lamp,
   the housing (2) being formed by two oblong side parts (11) with, in each instance, an upper and a lower longitudinal rim (11a, 11b), the lower longitudinal rims (11b) being spaced from one another and delimiting a lower light exit aperture (5),
   characterised in that
   the upper longitudinal rims (11a) and also the edge regions (11d) pertaining to them and extending over a part of the height of the side parts (11) are offset inwards in longitudinal sections towards the longitudinal median plane (E) of the luminaire (1), with respect to which the two side parts are arranged in mirror-symmetric manner, and are connected to one another.
2. Luminaire according to Claim 1,
   characterised in that
   the side parts (11) are plate-shaped.
3. Luminaire according to Claim 1 or 2,
   characterised in that
   the edge regions (11d) which are offset inwards in longitudinal sections towards the longitudinal median plane (E) and connected to one another are substantially parallel.
4. Luminaire according to one of the preceding claims,
   characterised in that
   the side parts (11) are unevenly shaped in such a manner that the lower longitudinal rims (11b) which are spaced from one another define lower edge regions (11e) extending over a part of the height of the side walls (11), these edge regions being substantially parallel.
5. Luminaire according to Claim 3 or 4,
   characterised in that
   the sections (11a2) of the upper longitudinal rims (11) that are not connected to one another run lengthwise, spaced from one another, and delimit an upper housing aperture (14).
6. Luminaire according to one of the preceding claims,
   characterised in that
   between the upper longitudinal rims (11a) there are included retaining means (3) which are intended for the purpose of fastening connection means (3a) for the at least one lamp and/or are intended for the purpose of connecting to supporting parts (28) for the luminaire (1).
7. Luminaire according to Claim 6,
   characterised in that
   the retaining means (3) are formed of upper profiled rails (21) extending in the longitudinal direction of the luminaire, (1) with undercuts and/or projections.
8. Luminaire according to one of Claims 6 or 7,
   characterised in that
   the retaining means (3) also bear a top reflector (17) extending over the connection means (3a) for the at least one lamp, this reflector reflecting downwards.
9. Luminaire according to Claims 5 and 8,
   characterised in that
   the top reflector (17) is at least partly light-transmitting in the region of the upper light exit aperture (14).
10. Luminaire according to one of the preceding claims,
    characterised in that
    on the insides of the side parts (11) in the lower region thereof there are provided fastening means (6) for light-influencing means (4) to be inserted into the luminaire (1).
11. Luminaire according to Claim 10,
    characterised in that
    the fastening means are parts of a latching device (36).
12. Luminaire according to Claim 11,
    characterised in that
    the latching device (36) exhibits latching lugs (36b) arranged on spring arms (36a).
13. Luminaire according to one of the preceding claims,
    characterised in that
    the light-influencing means (4) are capable of being connected to the lower rim regions of the side parts (11) in such a manner that the light-influencing means (4) form a housing brace acting parallel to the exit aperture (5).
14. Luminaire according to Claim 13,
    characterised in that
    pin connections (38) arranged on both sides are arranged between the light-influencing means (4) and the side parts (11) or side walls, these pin connections fixing the light-influencing means (4) and the side parts (11) or side walls to one another parallel to the light exit aperture (5).
15. Luminaire according to Claim 13 or 14,
    characterised in that
    the housing brace or the pin connections (38) are capable of being brought into effective connection simultaneously when the light-influencing means (4) are inserted into the housing (2).
16. Luminaire according to one of Claims 10 to 15,
    characterised in that
    the fastening means (6) and/or the brace parts and/or the pin-connection parts are arranged on intermediate pieces (37; 39) or on profiled rails (37a; 39a) which are fastened to the light-influencing means (4) and/or to the opposing side parts (11) or side walls.
17. Luminaire according to Claim 16,
    characterised in that
    the pin connections (38) are formed by profiled studs (38a) which are set in profiled grooves (38b), these profiled studs being moulded on the profiled rails (37a, 39a).
18. Luminaire according to one of Claims 10 to 17,
    characterised in that
    the light-influencing means (4) are formed by reflecting louvre elements.
19. Luminaire according to Claim 18,
    characterised in that
    the louvre elements are formed by two lateral louvres and by transverse slats running between the lateral louvres or by a one-piece or multi-piece cell louvre.
20. Luminaire according to one of the preceding claims,
    characterised in that
    the side parts (11) or side walls consist of non-metallic material, preferably wood or Eternit.
21. Luminaire according to one of the preceding claims,
    characterised in that
    the luminaire exhibits two connecting parts which to prevent falling down are connected to one another over a broad area, preferably by adhesive bonding, or the side parts (11) are connected to one another and/or the upper and/or lower profiled rails (21; 37a; 39a) or the intermediate pieces (37, 39) are connected over a broad area, preferably by adhesive bonding.
22. Luminaire according to Claim 21,
    characterised in that
    in addition to the adhesive bond the two connecting parts are releasably connected to one another by means of a mechanical locking device (51).
23. Luminaire according to one of Claims 5 to 22,
    characterised in that
    an operating device (45) and/or an inner housing (25) is/are arranged in the region of the upper housing aperture (14) in the housing (2).
24. Luminaire according to Claim 22,
    characterised in that
    the locking device (51) is releasable.
25. Luminaire according to one of the preceding Claims 22 or 24,
    characterised in that
    the locking device (51) exhibits positively engaged locking elements (51a, 51b).
26. Luminaire according to Claim 25,
    characterised in that
    the locking elements (51a, 51b) form a hook connection.
27. Luminaire according to one of Claims 22 or 24 to 26,
    characterised in that
    the locking device (51) is effective in the housing (2) between the housing (2) or a housing attachment (37) and a built-in part, in particular a reflector (17).
28. Luminaire according to Claim 27,
    characterised in that
    the housing attachment (37) exhibits connecting elements which are parts of a connecting device, preferably a latching device (36), for connecting a light-influencing element (4), in particular a louvre (31) or a reflector.

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