EP3076068B1 - Linear lamp and support profile for a linear lamp - Google Patents

Description

Technical area

The invention relates to a linear lamp according to the preamble of independent claim 1 and an associated carrier profile.

Such linear lamps having a lighting means, an operating device for operating the lighting means and a one-piece carrier profile, wherein the carrier profile comprises two longitudinal base plates, each having two longitudinal sides and two end faces, the two base plates of the carrier profile each one of the other base plate facing inner surface and one each the outer surface facing away from the other base plate, one of the outer surfaces of the two base plates of the carrier profile a front of the carrier profile and the other of the outer surfaces of the two base plates of the carrier profile form a back of the carrier profile, the light source on the front of the carrier profile and the operating device the rear side of the carrier profile are mounted, and the carrier profile has two lateral connection areas, which connect each of the two base plates on each one of their longitudinal sides together so that the G Circular plates are spaced apart and that a cavity between the two base plates is arranged, can be used to illuminate rooms, squares, work surfaces, stands and the like.

State of the art

For the illumination of indoor and outdoor spaces nowadays often longitudinal lights are used, which extend along a space or an object on which they are arranged. Such lights are commonly called Designated linear lights and can for example be mounted directly on walls, suspended or mounted on ceilings or attached to it.

Typically, linear lights include a straight or curved generally elongated or longitudinal base profile or housing that is attached directly or indirectly to the object or wall or ceiling. In addition, linear lights usually have a light bar or a carrier profile along which or which a longitudinal lighting means such as a fluorescent tube or a series of light-emitting diodes or a plurality of lighting means and associated control gear are attached.

When using a series of light-emitting diodes as light sources (LED bulbs) is typically generated without additional optics or lens a punk-shaped line on an illuminated surface. Therefore, such linear lights are typically equipped with at least one optical system which scatters the light generated or determines a light distribution curve of the linear light. In particular, optics are frequently used which cover the illuminant or bulbs such that the light emitted by the illuminants has preferred emission characteristics. For example, optics determine hue, scatter and / or direction of the emitted light. Also such optics are used to complete the linear lights.

When mounting a linear light, the base profile is usually attached to a target position on the wall, the ceiling or the object, for example screwed. One or more provided with lighting carrier profile is then mounted on the base profile mostly detachable. Then the optics are mounted on the base profile or on the carrier profile.

The support profile is usually used in linear lights for carrying the light source, the operating device and possibly other components. For this purpose, the carrier profiles often have a front mounting surface and a rear mounting surface. The light source is then attached to the front and the control gear to the back. In operation, the front-side mounting surface with the lighting means facing the space to be illuminated or the surface to be illuminated.

If linear lights of the type described above are turned on, the individual components, in particular the light sources and the operating devices, generate heat which must be dissipated in order to avoid overheating. For this purpose, the carrier profiles are often made of a thermally conductive material, so that the heat generated abbeziehungsweise can be diverted away from the light source via the carrier profiles from the linear lights. However, such a thermally conductive design of a carrier profile can cause heat also circulates from one component to another component. For example, heat generated by the operating device can pass from the rear side of the carrier profile onto its front side and thus the lighting means and impair this.

To address this problem, it is known to design carrier profile so that a cavity between the front and back lies. For this purpose, usually the front and the back surfaces are formed on two parallel separate base plates of the carrier profile. The base plates are typically connected to one another via lateral connection regions of the carrier element. Between the two base plates is the cavity, which thermally separates the two base plates from each other.

A disadvantage of these carrier profiles provided with a cavity, however, may be that heat is transferred to an undesired extent from one component via the associated base plate, one of the connecting regions and the other base plate to another component. In particular at certain points this can lead to an impairment of the additionally heated component. For example, heat generated by an operating device at the point at which it develops the most heat can thus be transmitted laterally to the illuminant via the carrier profile or its base plates and connecting regions. In particular, when using LED bulbs, the heat balance is particularly taken into account, so that a general or punctual additional heating is usually undesirable.

Against this background, the object of the following invention is to propose a linear luminaire or a carrier profile which, respectively, enables an improved heat balance and, in particular, reduces the transfer of heat of different components to one another. EP 2 827 053 discloses a linear lamp of the prior art. EP 2 674 671 discloses a luminaire in which the light sources and the electrical components are separated from each other by recesses formed on the surface of a luminous means carrier.

Presentation of the invention

The object is achieved according to the invention by a linear lamp, as defined in independent claim 1. Advantageous embodiments of the invention will become apparent from the dependent claims.

The essence of the invention consists in the following: A linear lamp is equipped with a lighting means, an operating device for operating the lighting means and a one-piece carrier profile. The carrier profile comprises two longitudinal base plates, each having two longitudinal sides and two end faces. The two base plates of the carrier profile each have one of the other base plate facing inner surface and each one of the other base plate remote from the outer surface. One of the outer surfaces of the two base plates of the carrier profile forms a front side of the carrier profile and the other of the outer surfaces of the two base plates of the carrier profile forms a rear side of the carrier profile. The light source is mounted on the front side of the carrier profile and the operating device on the rear side of the carrier profile. The carrier profile has two lateral connection areas, which in each case connect the two base plates to each one of their longitudinal sides so that the base plates are spaced apart from each other and that a cavity between the two base plates is arranged. The carrier profile comprises two incisions which each extend between one of the two connection regions and one of the two base plates connected to it along the associated longitudinal side.

The term "longitudinal" in the context of the base plates may refer to a linear, quasi-linear or even curved shape. The longitudinal extent of the base plates is in any case greater than their extension in width. In this case, the base plates can be configured substantially straight in a cross section along a longitudinal direction. In such an embodiment, the surfaces of the base plates in a plan view may describe a rectangular area. The carrier profile itself can also be referred to as longitudinal.

In use of the linear light, that is usually in the mounted state, typically the front side of the carrier profile is aligned together with the light source in a direction of illumination. For example, the front side of a ceiling-mounted linear lamp is directed downwards, that is, the front side forms an underside of the carrier profile and the back side forms an upper side thereof. The light source is oriented downward and the operating device between carrier profile and ceiling arranged.

The inner and outer surfaces of the longitudinal base plates may in particular be rectangular. The long sides can be several times longer than the front sides. The inner and outer surfaces of the longitudinal base plates can also be designed bent.

Since the two connection areas each connect the two base plates to one another on each of their longitudinal sides, they are formed laterally on both sides of the base plates. They connect, for example arcuate or angled base plate comprising the front with the base plate comprising the rear side on the longitudinal sides thereof. The connection areas may be continuous or quasi-continuous, so that they laterally delimit the cavity between the base plates.

The cavity between the two base plates can be filled in particular with air. For example, it can be provided with openings so that air can flow in and out. Such a cavity allows thermal insulation of the two base plates or the front and the back of each other. In particular, this can be a transition of heat from the operating device to the bulb or vice versa reduced.

By providing an incision in the carrier profile between the two base plates on both sides, a heat transfer from the one base plate to the other base plate can be reduced or even prevented. In particular, the carrier profile can be relatively thin at the incisions, so that the heat transfer or heat transfer at this point is relatively poor. This can be effectively prevented in a relatively simple manner that heat is transferred from a component on the one to another component on the other side of the carrier profile, whereby the thermal insulation of the front of the back can be improved. In particular, it can thus be avoided, for example, that heat from the operating device mounted on the rear side is transmitted via the carrier profile to the illuminant mounted on the front side and impairs the latter. Rather, the Heat to be dissipated through other areas of the carrier profile on which the carrier profile has no reduced thickness or allows a relatively good heat transfer in other ways. The embodiment of the carrier profile according to the invention thus makes it possible in a simple manner to achieve an improved efficient thermal separation of operating device and lighting means or of the front and rear sides of the carrier profile.

The carrier profile may have a mounting structure, via which it can be mounted on a housing or base profile. For example, such a mounting structure having hooks that can engage in corresponding receptacles or behind corresponding undercuts of the housing.

The cuts in the carrier profile may have any suitable shape. For example, they may be formed as notches or channels. In particular, they may have a V-shaped cross section, so that they narrow with increasing depth. The depth of the cuts preferably corresponds to at least 50% of a thickness of the base plates, at least 70% of the thickness of the base plates, at least 80% of the thickness of the base plates, at least 90% of the thickness of the base plates or at least the thickness of the base plates.

The cuts preferably each have a maximum width corresponding to at least 50% of a thickness of the base plates, at least 70% of the thickness of the base plates, at least 80% of the thickness of the base plates, at least 90% of the thickness of the base plates or at least the thickness of the base plates. Sections so dimensioned allow for an interruption of the thermal transition between the two base plates to a sufficient extent. As a result, front and rear sides can be thermally decoupled from each other efficiently, so that the components of the linear light mounted on the front and rear sides are protected.

Preferably, the base plates of the carrier profile each comprise two end faces, which are not connected to each other, so that the cavity is open on the front side. Such a cavity allows air in its interior or other suitable medium can be efficiently replaced. It can efficiently heated air escape from the cavity and be replaced by not yet heated air.

Preferably, the base plates of the carrier profile are arranged parallel to each other. Such an arrangement of the base plates to each other is useful for many applications. For example, it may be preferred for attached to ceilings or walls linear lights. Also, such carrier profiles can be relatively easy to manufacture and obstruct.

The longitudinal sides of the base plates of the carrier profile are preferably straight. Such a design of the long sides allows the realization of a straight linear lamp, which is desired in many applications. For example, linear luminaires are often preferred for ceiling lighting of rooms and hallways.

The carrier strip is advantageously made of a thermally relatively highly conductive material so that heat produced by the operating device and the lamp can be efficiently dissipated. Preferably, the carrier profile is made of a metal and in particular of aluminum or coated aluminum. Support profiles made of aluminum can bring various advantageous properties with it. For example, such carrier profiles can be lightweight, sufficiently robust and sustainable. In addition, aluminum can be efficiently shaped in a variety of ways.

The carrier profile preferably has two undercuts extending laterally from the base plates and along their longitudinal sides. The undercuts can be aligned so that suitable means of optics intervene in the undercuts and thus hold the optics on the carrier profile. For example, they can be offset parallel or quasi parallel to the front of the carrier profile. In this way, the carrier profile can be efficiently provided for connection to an optic.

Preferably, the carrier profile has two laterally of the base plates and parallel to the longitudinal sides extending clamping channels. The clamping channels can be open towards the front of the carrier profile, so that they are accessible from this side. They each form a female part of one Clamp connection. In particular, for example, an optical system can be equipped with a corresponding male part of the clamping connection and be efficiently mounted on the carrier profile via this clamping connection. Such clamping channels also make it possible to prevent excessive penetration of moisture from outside the linear light via the connection between the carrier profile and the optical system into the interior of the linear light. As a result, the components inside the linear light, such as the light source and the operating device can be protected from moisture. In particular, by means of such clamping channels can be made possible that the linear lamp efficiently meets predetermined conditions with respect moisture tightness. For example, such conditions may be defined in the known and recognized International Protection Codes (IP) codes.

In this case, the clamping channels preferably each comprise two parallel side walls, which are equipped with mutually aligned toothings. In this context, the term "parallel" also includes a quasi-parallel configuration, in which the side walls slightly deviate from an exactly parallel alignment. The side walls may in particular extend at right angles or at a virtually right angle to the front side of the carrier profile, so that the clamping channels are efficiently accessible from the front side. With the teeth, the clamp connection can be strengthened, so that, for example, the optics can be sufficiently firmly held on the carrier profile. In addition, such a toothing further complicate the penetration of moisture and thus improve the density of the linear lamp.

In this case, the inner side walls of the two clamping channels are preferably shorter than the outer side walls of the two clamping channels. Such a configuration of the side walls allows on the one hand a sufficiently strong connection between the carrier profile and, for example, an optic. On the other hand, it allows in particular that a moisture transfer can be prevented labyrinthine. This can allow a particularly efficient seal in a relatively simple manner.

Preferably, the carrier profile has two laterally of the base plates and parallel to the longitudinal sides extending clamping walls. Such clamping walls can serve as male parts of a clamping connection. This can be the top be described implemented in reverse, so the male part on the support member and the female part, for example, on the optics.

In this case, the clamping walls are preferably each provided with teeth on the two outer sides. Such teeth allow a firm and tight connection as already described above.

In a preferred embodiment, the carrier profile on any combination of undercuts, clamping channels and / or clamping walls. In this way, the carrier profile can be used universally with optics to be connected in different ways. This can considerably simplify the production process of linear luminaires, since a single carrier profile can be used for different designs of the linear luminaires.

The linear light preferably comprises an optic. Such an optical system can be used to design the light emitted by the linear light or to define the light distribution curve (LVK) of the linear light. The LVK can be used in conjunction with an intended direction of radiation, which refers to a direction of light propagation, in which the linear light illuminates as intended. The LVK represents predefined radiation characteristics of the linear light. With the predefined radiation characteristics, it is possible to define properties of the light generated by the luminous means, such as scattering, attenuation, beam direction, focusing and / or color or tone, as desired.

The optics can close off the linear luminaire towards the outside and thus be an essential visible part of the linear luminaire in a built-in or assembled state of the linear luminaire. Typically, the optics are transparent or at least partially transparent.

The term "transparent" in this context may refer to translucent or at least partially transparent to visible light.

The term "translucent" may refer in particular to a damped or undamped permeability of the light generated by means of the luminous means.

Preferably, the optics is made in one piece, wherein a single linear lamp may also comprise a plurality of one-piece optics. In particular, it may be made of a plastic such as a polycarbonate (PC) or a polymethyl methacrylate (PMMA). On the one hand, such plastics enable a robust design of the optics in many possible geometries. On the other hand, they can be translucent in many ways, so that the desired radiation characteristic can be predefined flexibly and adapted to an intended use. In addition, optics can be made of such a material relatively simple and inexpensive and have other preferred for use properties such as elasticity or longevity.

The term "longitudinal" in connection with the optics can be understood analogously to the use thereof in connection with the base plates of the carrier profile. In particular, it can refer to a linear, quasi-linear or even curved shape. The longitudinal extent of the optics is in any case greater than their extension in width. In this case, the optics can be designed substantially straight in a cross section along a longitudinal direction. In such an embodiment, the optics can describe a rectangular area in a plan view.

In a first preferred embodiment, the longitudinal optics comprises lateral latching noses, the optics being mounted on the carrier profile by the latching noses engaging behind the undercuts of the carrier profile, so that the optics covers the illuminant in its emission direction. Such optics can be efficiently attached to the carrier profile by snapping the snap-in lugs into the undercuts. This allows the optics to be mounted in a simple manner.

In this case, a seal between the optics and the lighting means is preferably arranged. It may be that the connection of the optics with the carrier profile via lugs and undercuts alone does not allow sufficiently tight connection of optics and carrier profile, so that necessary conditions can not be met to the moisture density. In such a constellation, the additional sealing makes it possible, in particular, for the illuminant to be sealed tight.

The seal may be made of a resilient plastic. It can be clamped between bulb and carrier profile and slightly compressed so that a tight seal can be present. The seal can additionally ensure a uniform contact pressure between the carrier profile and the illuminant, so that a relatively good heat transfer from the illuminant to the carrier profile is made possible. Furthermore, the seal can absorb or permit a longitudinal displacement or expansion of the optic due to thermal changes with respect to the illuminant.

In another preferred embodiment, the longitudinal optic comprises parallel lateral clamping walls, wherein the optics is mounted on the carrier profile by the clamping walls of the optics are clamped in the clamping channels of the carrier profile, so that the optics covers the illuminant in its emission direction. Such optics enable a firm and moisture-proof clamping connection of the optics with the carrier profile as described above.

In another further preferred embodiment, the longitudinal optic comprises parallel lateral clamping channels, wherein the optics is mounted on the carrier profile by the clamping walls of the carrier profile are clamped in the clamping channels of the optics, so that the optics covers the illuminant in its emission direction. Such optics provide an alternative solid and moisture-proof clamp connection of the optic to the carrier profile as described above.

The luminous means can be any longitudinal luminous means such as a fluorescent tube or the like. Preferably, however, it includes a board and a series of light emitting diodes mounted on a surface of the board. In this case, the board is mounted on the carrier profile, that one of the surface with the LEDs opposite surface of the board faces the front of the carrier profile. The series of light emitting diodes may comprise one or more parallel rows of light emitting diodes.

The term "row" may in this context refer to the fact that the light-emitting diodes are arranged along a curved, wavy, jagged or in particular straight line.

The term "light-emitting diode" can be understood synonymously for light-emitting diode or light-emitting diode (LED). The light-emitting diodes can be configured in a plan view, for example, round, elliptical, square or rectangular. They can be mounted on the board, which can also be equipped with a control electronics for operating the LEDs.

The light source can be referred to as LED bulbs. LED lamps have various advantageous properties such as high energy efficiency, long life and cost-effective production. They allow an efficient lighting adapted to the respective application.

The LEDs can also each have a primary lens. Such primary lenses or primary optics can be provided, for example, for glare-free illumination of the light generated by the light-emitting diodes. You can also bundle the light generated by the LEDs, for example, in the direction of the optics. In this way, it is possible to dispense with further elements for bundling the light, for example reflectors, or their construction can be simplified.

In this case, the optic preferably comprises a plurality of lenses, wherein in each case a lens is arranged adjacent to one of the light-emitting diodes. With such lenses, the emission characteristics of each individual LED can be set individually. In this way, the LVK of the linear light can be flexibly and efficiently defined. In addition, such an optic with lenses can provide a preferred appearance of the linear lamp.

In this case, the optic preferably has a longitudinal base plate and two wing sections. The lenses are formed on the base plate so that they rise from a surface of the base plate, wherein the wing portions connect laterally to the base plate. The wing sections are so curved that they project beyond the lenses. The wing sections may lie between the base plate and the latching noses or clamping channels or clamping walls of the optics. The design of the optics with such wing sections, on the one hand, allows the optics to be mounted efficiently via the wing sections on the carrier profile and, on the other hand, the lenses can be protected.

Preferably, the linear lamp has a grid with longitudinal struts and angled thereto extending cross struts. The transverse and longitudinal struts can also be curved so that round or oval fields are formed in the grid. The grid is mounted on the optics so that each one of the lenses of the optics are in a limited by two cross struts and two longitudinal struts field. The transverse and longitudinal struts may in particular be at right angles to one another. Such a grid can serve as glare protection. In addition, it may allow the linear light to be perceived aesthetically pleasing.

Preferably, the carrier profile comprises two side regions which each extend from one of the two connection regions away from the base plates connected to it. The side areas can each connect directly to the associated connection area. Such side areas allow heat from one of the two base plates to be led laterally outwards. In addition, the side regions make it possible for the carrier profile to be equipped with further components or functions, such as the embodiments of the carrier profile described above.

In this case, the carrier profile is preferably thinner in the two incisions than in the two side regions. As a result, it can be efficiently achieved that heat from one of the two base plates is diverted predominantly or even completely through the side regions and does not pass past the cuts on the other base plate. In particular, the carrier profile in the connection areas each describe two paths, of which a first path past the associated incision connects the base plates together and a second path in the side regions extends laterally outwards. Thus, the heat emanating from one of the base plates can be efficiently dissipated to the outside. The two base plates can be quasi heat insulated to each other.

Another aspect of the invention relates to a carrier profile for a linear lamp as described above. The carrier profile comprises two longitudinal base plates, each having two longitudinal sides and two end faces, and two connection areas. In this case, the two base plates each have one of the other base plate facing inner surface and each one of the other base plate facing away from the outer surface. One of the outer surfaces of the two Base plates of the carrier profile forms a front side of the carrier profile and the other of the outer surfaces of the two base plates of the carrier profile forms a rear side of the carrier profile. An illuminant of the linear luminaire can be mounted on the front and an operating device of the linear luminaire on the rear. The two connection areas connect each of the two base plates to one of their longitudinal sides with each other such that the base plates are spaced apart from each other and that a cavity between the two base plates is arranged. Between one of the two connection regions and one of the two base plates connected to it, two incisions each extend along the associated longitudinal side.

With such a carrier profile, an inventive linear lamp and its effects or advantages can be efficiently realized. In particular, the carrier profile can also be developed with the features described above in connection with the linear lamp.

Brief description of the drawings

Fig. 1

eine Querschnittsansicht eines Ausführungsbeispiels einer erfindungsgemässen Linearleuchte mit einem ersten Ausführungsbeispiel einer Optik;

Fig. 2

eine perspektivische Explosionsansicht der Linearleuchte von Fig. 1;

Fig. 3

eine Querschnittsansicht der erfindungsgemässen Linearleuchte von Fig. 1 mit einem zweiten Ausführungsbeispiel einer Optik;

Fig. 4

eine perspektivische Explosionsansicht der Linearleuchte von Fig. 3;

Fig. 5

eine Querschnittsansicht der erfindungsgemässen Linearleuchte von Fig. 1 mit einem dritten Ausführungsbeispiel einer Optik; und

Fig. 6

eine perspektivische Explosionsansicht der Linearleuchte von Fig. 5.

Further advantageous embodiments of the invention will become apparent from the following description of embodiments of the invention by means of the schematic drawing. In particular, the linear luminaire according to the invention and the carrier profile according to the invention will be described in more detail below with reference to exemplary embodiments with reference to the attached drawings. Show it:

Fig. 1

a cross-sectional view of an embodiment of an inventive linear lamp with a first embodiment of an optic;

Fig. 2

an exploded perspective view of the linear lamp of Fig. 1 ;

Fig. 3

a cross-sectional view of the inventive linear lamp of Fig. 1 with a second embodiment of an optic;

Fig. 4

an exploded perspective view of the linear lamp of Fig. 3 ;

Fig. 5

a cross-sectional view of the inventive linear lamp of Fig. 1 with a third embodiment of an optic; and

Fig. 6

an exploded perspective view of the linear lamp of Fig. 5 ,

Way (s) for carrying out the invention

Certain terms are used in the following description for convenience and are not meant to be limiting. The words "right," "left," "bottom," and "top" refer to directions in the drawing to which reference is made. The terms "in", "out", "below", "above", "left", "right" or the like will be used to describe the arrangement of designated parts to each other, the movement of designated parts to each other and the directions toward or away from geometric center of the inventive linear lamp and designated parts thereof as shown in the figures used. These relative relative terms also include other positions and orientations than those shown in the figures. For example, when a part shown in the figures is turned over, elements or features described as "below" are then "above". The terminology includes the words expressly mentioned above, derivatives thereof, and words of similar meaning.

Fig. 1 shows an embodiment of an inventive linear lamp 1 in cross section. In this case, the linear lamp 1 is thus cut transversely to its longitudinal direction parallel to one of its end faces.

The linear luminaire 1 comprises a one-piece carrier profile 2, four optics 3A in a first embodiment, two LED illuminants 4 and an associated operating device 5. The carrier profile 2 has an upper base plate 211 and a lower base plate 212 arranged below and parallel thereto. The upper base plate 211 and the lower base plate 212 each have two parallel straight longitudinal sides and two mutually perpendicular, parallel end faces. Further, they each include an upper surface and a lower surface. The surfaces of the base plates 211, 212 are all rectangular and flat and aligned horizontally. The lower surface of the upper base plate 211 and the upper surface of the lower base plate 212 directly overlie each other and face each other. The upper surface of the upper base plate 211 forms a flat top or back 213 of the carrier profile 1 and the lower surface of the lower base plate 212 a flat bottom or front side 214 of the support profile. 1

Laterally of the longitudinal sides, the base plates 211, 212 pass on both sides into a connection region 28 of the carrier profile 2. The connecting portions 28 thus connect the upper base plate 211 to the lower base plate 212 at the longitudinal sides thereof. The left connection region 28 thus connects the left longitudinal edge of the Upper base plate 211 with the left longitudinal edge of the lower base plate 212 and the right connection portion 28, the right longitudinal edge of the upper base plate 211 with the right longitudinal edge of the lower base plate 212. The connecting portions 28 each extend along the base plates 211, 212 over their full length. They are formed in the cross section partially quasi arcuate. Between the upper base plate 211, the connecting portions 28 and the lower base plate 212, a cavity 27 is formed, which is filled with air.

Laterally, the connecting regions 28 each pass into an outwardly extending side region 29. As a result, first paths 291 are formed between the connection areas 28 and the upper base plate 211, which connect the connection areas 28 to the upper base plate 211 past the notches 23. By the side regions 29 adjoining directly to the connection regions 28, second paths 292 are formed. In each case one of the connecting regions 28 is together with the associated first path 291 and the associated second path 292 in the Fig. 1 shown cross section quasi Y-shaped configured. Due to the notches 23, the carrier profile 2 at the first paths 291 is substantially thinner than at the second paths 292. Due to the different thickness of the first and second paths 219, 292 can be achieved that generated for example by the LED light source 4 and the lower Base 212 transmitted heat above all or exclusively laterally via the connecting portions 28 and the side portions 29 via the second paths 292 is discharged.

Snap-in hooks 24 each adjoin the connection regions 28 on the side outside the side regions 29. The snap hooks 24 each have a vertically upwardly extending wall portion 241 which is closed at the top by an inwardly directed hook head 242. The snap hook 24 also extend over the full length of the base plates 211, 212 and the carrier profile 2. The snap hooks 24 may be provided for various functions in the lamp 1. For example, clamping springs for fastening the operating device 5 can engage in them.

Again laterally to the two snap hooks 24, the carrier profile 2 then comprises a clamping channel 26 which opens downwards or in the emission direction. The two clamping channels 26 each have an inner side wall 261 and an outer side wall 262, the inner side walls 261 are shorter than the outer side walls 262. At their respective inside of the clamping channels 26 facing inner sides of the inner side walls 261 are provided with an inner toothing 263 and the outer side walls 262 with an outer toothing 264. At their outer sides facing away from the interior of the clamping channels 26, the inner side walls 261 are formed vertically bevelled. Between the upper ends of the inner side walls 261 and the latching hooks 24 in each case an inwardly open undercut 25 is formed in the carrier profile 2.

Finally, the carrier profile 2 comprises two incisions 23, which respectively extend between one of the two connection regions 28 and the upper base plate 211 connected thereto along the associated longitudinal side of the upper base plate 211. The notches 23 extend over the full length of the carrier profile 2. They have a depth of about the thickness of the base plates 211, 212. In addition, they are formed in cross-section V-shaped, wherein the open upper end has an approximately the thickness of the base plates 211, 212 corresponding width.

Overall, the carrier profile 2 is shaped mirror-symmetrically. In particular, it is symmetrical with respect to a centrally longitudinally extending mirror plane. The carrier profile 2 is completely made of a powder-coated aluminum profile.

On the back 213 of the carrier profile 2, the operating device 5 is attached. For this purpose, the operating device 5 may for example be screwed to the carrier profile 2 or held on the carrier profile 2 via a tension spring. On the front side 214 of the carrier profile 2, the LED bulbs 4 are attached. They each comprise a printed circuit board 41 bonded to the front side 214 by means of a double-sided adhesive heat transfer ribbon and equipped with two parallel straight rows of light-emitting diodes 42.

The linear lamp 1 is in Fig. 1 equipped with the optics 3A, which are designed as lens modules as follows. The optics 3A each comprise a rectangular base plate 32A, which is closed at its two longitudinal sides in each case by a wing portion 34A. Between the base plate 32A and the wing sections 34A, a grid seat 35A accessible from below is formed. The wing portions 34A each have a curved portion 341A adjacent to the base plate 32A and an outwardly extending horizontal portion 342A. The horizontal portions 342A of the wing sections 34A each end flush with one of the outer side walls 262 of the clamping channels 26 of the carrier profile 2. In order to achieve a flush connection between the optics 3A and carrier profile 2, the open outer ends of the wing portion 34A and corresponding to the outer side walls 262 are formed diagonally chamfered.

Of the horizontal portions 342A of the wing portions 34A of the optics 3A, latching noses 31A each extend vertically upward. In this case, the latching noses 31A are bendable inwardly and configured corresponding to the undercuts 25 of the carrier profile 2. They each include a lamellar neck portion 311A and an outboard nose projection 312A. To attach the optics 3A on the support section 2, they are pressed from below to the support section 2. At this time, the latching projections 31A are pressed along the tapered outer surfaces of the outer side walls 262 of the clamp channels 26 so as to be bent inward. When the optics 3A are pushed far enough in the direction of the carrier profile 2, the latching noses 31A snap into the undercuts and the optics 3A are mounted on the carrier profile 2.

Two straight rows of lenses 33A are respectively disposed on the base plates 32A of the optics 3A. Each lens 33A is associated with one of the LEDs 42 of the LED lamps 4. In this case, each light-emitting diode 42 is covered by its associated lens 33A, so that the optics 3A cover the LED light-emitting means 4 in their emission directions.

Between the base plates 32A of the optics 3A and the boards 41 of the LED lighting means 4 are each a seal (in Fig. 1 not shown) clamped. The seals are externally disposed around the light emitting diodes 42 so that they are sealed with respect to moisture.

The optics 3A are each mirror-symmetrically shaped. In particular, they are symmetrical with respect to a centrally longitudinally extending mirror plane. They are made in one piece from an at least partially transparent plastic such as polycarbonate (PC) or polymethylmethacrylate (PMMA).

To avoid repetition in the figures and the associated description of the various aspects and embodiments, certain Features are understood to be common to various aspects and embodiments. The omission of an aspect in the description or a figure does not suggest that this aspect is lacking in the associated embodiment. Rather, such omission may serve the purpose of clarity and prevention of repetition. In this context, the following definition applies to the entire further description: If reference signs are included in a figure for the purpose of clarity of drawing, but are not mentioned in the directly related descriptive text, reference is made to the explanation thereof in the preceding description of the figures. If reference signs are also mentioned in the description text directly related to a figure, which are not included in the associated figure, reference is made to the preceding and following figures. Like reference numerals in two or more figures indicate similar or like elements.

In Fig. 2 the linear lamp 1 is shown in partially disassembled state and in a perspective view. In particular, the linear lamp 1 is completely disassembled on its left half and shown partially assembled on its right half. It can be seen that the carrier profile 2 has a relatively large length namely about twice the length of the light emitting means 4 or about four times the length of the optics 3A. The base plates 211, 212, the latching lugs 24 and the clamping channels 26 extend over the full length of the base plates 211, 212. In the linear lamp 1, in addition to the two identical LED lamps 4, the associated operating device 5 and the four identical optics 3A also four optional grid grid 6 and two end covers 7A available.

On the front side 214 of the support section 2, the LED bulbs 4 are glued and fixed on the back 213 of the support section 2, the operating device 5, with which the LED bulbs 4 can be operated. The LED lighting means 4 each comprise two parallel rows of 36 equi-spaced, rectangular light-emitting diodes 42. The sinkers 41 comprise continuous screw and center bores. The optics 3A have centering cams corresponding to the centering bores, so that the optics 3A are aligned exactly with the LED illuminants when the centering cams of the optics 3A are arranged in the centering bores of the sinkers 41.

As in Fig. 2 can be seen, the latching lugs 31A of the optics 3A are configured lamellar. Along each longitudinal side of the optics 3A are each five of the lamellar snap-in lugs 31A present. In the locked state, the optics 3A via the latching lugs 31A and the undercuts 25 are fixedly secured to the carrier profile 2. In this case, the optics 3A are virtually immovable in the vertical direction and are fixed in a floating manner on the carrier profile 2 in the horizontal direction or in the longitudinal direction. This floating connection allows different length extensions of the optics 3A compared to the support profile 2 due to temperature changes are possible without the optics 3A are clamped to the support section 2 and possibly bent.

The raster gratings 6 each comprise three parallel straight longitudinal struts 62 and nineteen parallel transverse struts 61. The longitudinal struts 62 and the transverse struts 61 each intersect at right angles, so that two parallel rows of eighteen rectangular fields per raster grid 6 are formed. The grid grids 6 are each dimensioned according to the optics 3A. In the mounted state, a grid grid 6 is attached to each optic 3A, so that in each case a lens 33A lies in one of the fields of the associated grid grid 6. For fixing the grid grid 6 is pressed so to the optics 3A, that the grid grid 6 snaps into the grid seats 35A.

The end covers 7A are connected at the two longitudinal ends of the carrier profile 2 with this. For this purpose, they have two tongues which can be inserted horizontally from the front or rear into the clamping channels 26 of the carrier profile 2. The end covers 7A are formed corresponding to the cross section of the carrier profile 2 and the optics 3A, so that they cover the side completely.

Fig. 3 and Fig. 4 show the linear lamp 1 with a second embodiment of an optic 3B in the form of a box-shaped diffuser and a second embodiment of end covers 7B. Next, the two LED bulbs 4 are fixed instead of gluing with four mounting connector 8 on the support section 2. For this purpose, the boards 41 of the LED lighting means 4 each have four holes through which the fastening plugs 8 extend. The fastening plugs 8 each comprise a relatively soft silicone disk. About this, the mounting connector 8 can produce a defined contact pressure between LED illuminant 4 and carrier profile 2, resulting in a uniform efficient Heat transfer from the LED light source 4 makes possible on the support profile. At the same time, the silicone disks can absorb a longitudinal expansion of the board 41 due to changing temperatures.

Except for the optics 3B, the end covers 7B and the attachment of the LED illuminants 4 on the carrier profile 2, the linear lamp 1 is identical designed as described above.

The optic 3B extends in the embodiment of FIG Fig. 3 and Fig. 4 over the full length of the carrier profile 2. Accordingly, only one optic 3B is present instead of the four optics 3A. The optic 3B has a substantially rectangular cross-section, wherein the upper longitudinal side is designed to be open. In particular, it has a cross-sectionally U-shaped right-angled cover portion 32B, which merges at its ends in each case in a clamping wall 31B.

The clamping walls 31B are provided on their outer sides with an outer toothing 312B and on their inner sides with an inner toothing 311B. For fixing the optic 3B on the carrier profile 2, the clamping walls 31B are inserted into the clamping channels 26, so that the clamping walls 31B lie largely inside the clamping channels 26. The outer teeth 312B of the clamping walls 31B engage the outer teeth 264 of the clamping channels 26 and the inner teeth 311B of the clamping walls 31B in the internal teeth 263 of the clamping channels 26. The vertical or upper end sides of the cover 32B lie on the vertical and lower end sides the outer side walls 262 on. The adjacent end faces and intermeshing serrations 264 and 312B and 263 and 311B, respectively, form a labyrinthine moisture barrier. In this way, the interior space of the linear lamp 1 and thus the components arranged therein, in particular the LED light-emitting means 4, can be protected against moisture as standard without any further measures.

The end covers 7B have two tongues, which can be pushed horizontally into the clamping channels 26 of the carrier profile 2 from the front or rear. They are in turn formed corresponding to the cross section of the carrier profile 2 and the optics 3 B, that is substantially rectangular, so that they completely cover these laterally.

In Fig. 5 and Fig. 6 1, the linear lamp 1 is shown with a third embodiment of an optic 3C in the form of a diffuser and a third embodiment of end covers 7C. Except for the optics 3C and the end covers 7C, the linear lamp 1 is identical as above in connection with Fig. 3 and Fig. 4 described designed.

The optic 3C extends in the embodiment of FIG Fig. 5 and Fig. 6 over the full length of the carrier profile 2. Accordingly, only one optic 3C in the linear lamp 1 is present. The optic 3C has a cross-sectionally arcuate cover portion 32B, which merges at its ends in each case in a clamping wall 31C.

The clamping walls 31C are configured analogously to the clamping walls 31B described above. In particular, on their outer sides with an outer toothing 312C and on their inner sides with an inner toothing 311C equipped. For attachment of the lens 3C on the support section 2, the clamping walls 31C are inserted into the clamping channels 26, so that the clamping walls 31C are largely inside the clamping channels 26. In this case, the outer teeth 312C of the clamping walls 31C engage the outer teeth 264 of the clamping channels 26 and the inner teeth 311C of the clamping walls 31C in the inner teeth 263 of the clamping channels 26. The vertical and upper end sides of the cover portion 32C lie on the vertical and lower end sides the outer side walls 262 on. The adjacent end faces and intermeshing serrations 264 and 312C and 263 and 311C, respectively, form a labyrinthine moisture barrier.

The end covers 7C have two tongues, which can be pushed horizontally into the clamping channels 26 of the carrier profile 2 from the front or rear. They are in turn formed corresponding to the cross-section of the carrier profile 2 and the optics 3C, so that they completely cover them laterally.

While the invention has been illustrated and described in detail by the figures and the accompanying description, this description and detailed description are to be considered illustrative and exemplary and not limiting as to the invention. In order not to transpose the invention, in certain cases well-known structures and techniques have not been shown and described in detail. It is understood that those skilled in the art can make changes and modifications without departing from the scope of the following claims. For example, LED boards can be combined in any length and number on a carrier profile. The number of optics and operating devices can also be adjusted accordingly. In particular, the present invention covers other embodiments with any combinations of features that may differ from the feature combinations explicitly described.

The present disclosure also includes embodiments having any combination of features that are mentioned or shown above or below various embodiments. It also comprises individual features in the figures, even if they are shown there in connection with other features and / or are not mentioned above or below. Also, the alternatives of embodiments and individual alternatives described in the figures and the description may be excluded from the subject matter of the invention or from the disclosed subject matter. The disclosure includes embodiments which exclusively comprise the features described in the claims and in the exemplary embodiments as well as those which include additional other features.

Furthermore, the term "comprising" and derivatives thereof do not exclude other elements or steps. Likewise, the indefinite article "a" or "a" and derivatives thereof does not exclude a variety. The functions of several features listed in the claims may be fulfilled by a unit or a step. The mere fact that certain masses are listed in mutually different dependent claims does not mean that a combination of these masses can not be used to advantage. The terms "substantially", "approximately", "approximately" and the like in connection with a property or a value in particular also define precisely the property or exactly the value. The terms "about" and "approximately" in the context of a given numerical value or range may refer to a value or range that is within 20%, within 10%, within 5%, or within 2% of the given value or range. All Reference signs in the claims are not to be understood as limiting the scope of the claims.

Claims (15)

1. A linear luminaire (1) comprising a light source (4), an operating device (5) for operating the light source (4) and a one-piece support profile (2), wherein
   the support profile (2) comprises two elongate base plates (211, 212), each having two longitudinal sides and two end sides;
   the two base plates (211, 212) of the support profile (2) each have an inner surface facing the other base plate (211, 212) and each have an outer surface facing away from the other base plate (211, 212);
   one of the outer surfaces of the two base plates (211, 212) of the support profile (2) forms a front side (214) of the support profile (2) and the other outer surface of the two base plates (211, 212) of the support profile (2) forms a rear side (213) of the support profile (2);
   the light source (4) is mounted on the front side (214) of the support profile (2) and the operating device (5) is mounted on the rear side (213) of the support profile (2); and
   the support profile (2) comprises two lateral connection regions (28), which each connect together the two base plates (211, 212) on the respective longitudinal sides thereof, in such a way that the base plates (211, 212) are spaced apart from one another and a cavity (27) is located between the two base plates (211, 212),
   characterised in that
   the support profile (2) comprises two notches (23), which each extend between one of the two connection regions (28) and one of the two base plates (211, 212) connected thereto, along the associated longitudinal side.
2. Linear luminaire (1) according to claim 1, in which the depth of the notches (23) is at least 50% of a thickness of the base plates (211, 212), at least 70% of the thickness of the base plates (211, 212), at least 80% of the thickness of the base plates (211, 212), at least 90% of the thickness of the base plates (211, 212) or at least the thickness of the base plates (211, 212).
3. Linear luminaire (1) according to claim 1 or 2, in which the notches (23) each have a maximum width that is at least 50% of a thickness of the base plates (211, 212), at least 70% of the thickness of the base plates (211, 212), at least 80% of the thickness of the base plates, at least 90% of the thickness of the base plates (211, 212) or at least the thickness of the base plates (211, 212).
4. Linear luminaire (1) according to one of the preceding claims, in which the support profile (2) comprises two undercuts (25) on the side of the base plates (211, 212) and extending along the longitudinal sides thereof.
5. Linear luminaire (1) according to any one of the preceding claims, in which the support profile (2) comprises two clamping channels (26) on the side of the base plates (211, 212) and extending parallel to the longitudinal sides thereof.
6. Linear luminaire (1) according to claim 5, in which the clamping channels (26) each comprise two parallel side walls (261, 262) which are equipped with oppositely aligned tooth systems (263, 264).
7. Linear luminaire (1) according to claim 6, in which the inner side walls (261) of the two clamping channels (26) are shorter than the outer side walls (262) of the two clamping channels (26).
8. Linear luminaire (1) according to one of claims 4 to 7, comprising an elongate optical element (3A; 3B; 3C) with lateral latching lugs (31A; 31B; 31C), wherein the optical element (3A; 3B; 3C) is mounted on the support profile (2) by the latching lugs (31A; 31B; 31C) engaging behind the undercuts (25) of the support profile (2), such that the optical element (3A; 3B; 3C) covers the light source (4) in the radiation direction thereof.
9. Linear luminaire (1) according to claim 8, in which a seal is arranged between the optical element (3A; 3B; 3C) and the light source (4).
10. Linear luminaire (1) according to one of claims 4 to 7, comprising an elongate optical element (3A; 3B; 3C) with lateral clamping walls (31B; 31C), wherein the optical element (3A; 3B; 3C) is mounted on the support profile (2) by the clamping walls (31B; 31C) of the optical element (3A; 3B; 3C) being clamped in the clamping channels (26) of the support profile (2), such that the optical element (3A; 3B; 3C) covers the light source (4) in the radiation direction thereof.
11. Linear luminaire (1) according to any one of the preceding claims, in which the light source (4) comprises a board (41) and a series of a light emitting diodes (42) mounted on the surface of the board, wherein the board (41) is mounted on the support profile (2) in such a way that a surface of the board (41) opposite to the surface comprising the light emitting diodes (42) faces the front side (214) of the support profile (2).
12. Linear luminaire (1) according to one of claims 9 or 10 and 11, in which the optical element (3A; 3B; 3C) comprises a plurality of lenses (33A), wherein each lens (33A) is arranged adjacent to one of the light emitting diodes (42).
13. Linear luminaire (1) according to claim 12, in which the optical element (3A; 3B; 3C) comprises an elongate base plate (32A) and two wing sections (34A), wherein the lenses (33A) are formed on the base plate (32A) in such a way that they stand out from a surface of the base plate (32A), wherein the wing sections (34A) are connected on the side of the base plate (211, 212), and wherein the wing sections (34A) have a curved shape such that they protrude beyond the lenses (33A).
14. Linear luminaire (1) according to any one of the preceding claims, in which the support profile (2) comprises two side regions (29) which each extend away from one of the two connection regions (28) of the base plates (211, 212) connected thereto.
15. Linear luminaire according to claim 14, in which the support profile (2) is thinner at the two notches (23) than at the two side regions (29).

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