EP2824380B1 - Lamp - Google Patents

Description

technical field

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

Luminaires of this type with a base profile and a light strip on which at least one operating device and at least one lamp that can be operated using the control gear are arranged, with the light strip being detachably mounted on the base profile, can be used to illuminate closed or open spaces and to illuminate facades or signs will.

State of the art

To illuminate interior and exterior spaces, elongate luminaires are often used today, which extend along a space or an object on which they are arranged. Such luminaires are usually referred to as linear luminaires and can, for example, be attached directly to walls, suspended or attached to ceilings.

Typically, linear lights include a straight or curved, mostly elongated or oblong base profile, which is attached directly or indirectly to the object or the wall or the ceiling. In addition, linear lights usually have a light strip along which a series of light sources such as LED light sources and associated control gear are attached.

In particular when using LED light sources, primary optics are often used, which cover the light sources in such a way that the light emitted by the light sources has preferred emission characteristics. For example, the hue, scattering and/or direction of the emitted light are fixed with primary optics. Linear lights are typically closed off by an at least partially transparent cover or an external diffuser as secondary optics, which encloses at least the areas of the light that do not face the wall or ceiling.

When installing a linear light, the base profile is usually first attached to a target position on the wall, ceiling or object, for example screwed or suspended. The light strip provided with the illuminants is then mostly detachably mounted on the base profile fastened to the object or to the wall or ceiling. Then the primary optics are mounted on the base profile and then the cover or the outer diffuser is also mounted on the base profile. In the U.S. 2012/0155073 A1 , the US 2013/0083524 A1 , the EP 2 375 128 A2 and the JP 2005/019299 A an embodiment of such linear lights is described.

Typically, linear luminaires are positioned indoors or outdoors in such a way that they illuminate the relevant room well on the one hand and impair the use of the room as little as possible on the other. For this reason, the linear lights are usually positioned in places that are relatively difficult to access, such as in the middle of the ceiling in a room. Accordingly, the assembly of such linear lights with the at least four steps described above is relatively complex, which can be tedious in particular when equipping large rooms with a relatively large number of such linear lights. In addition, the maintenance, such as the replacement of defective lamps, is relatively expensive in an analogous manner.

Against this background, it is the object of the following invention to propose a light that can be used in particular as a linear light with LED light sources is relatively easy and efficient to assemble and maintain.

Presentation of the invention

According to the invention, the object is achieved by a lamp as defined in independent patent claim 1 . Advantageous design variants of the device according to the invention result from the dependent patent claims.

The essence of the invention is as follows: A luminaire comprises a base profile and a light bar on which at least one operating device and at least one illuminant that can be operated by means of the operating device are arranged, the light bar being detachably mounted on the base profile. The light strip is made from a translucent material and encloses the at least one light source in its intended emission direction. In cross-section, the light strip comprises a front section and two side wings, each adjoining the front section, which are opposite one another and are essentially mirror-symmetrical. The side wings of the light strip each have a tapered area in cross-section towards their ends facing away from the front section, with the outer sides of the tapered areas being designed to be bevelled. The base profile and the light strip can have an elongate basic shape, so that the light can be a linear light in particular. In this case, the lamp can in particular have a plurality of light sources.

The term "translucent" in connection with the invention refers in particular to an attenuated or undamped transparency of the light generated by means of the illuminant and the operating device. The term "envisaged direction of emission" can refer to a direction of light propagation in which the lamp illuminates as intended.

According to the invention, the light bar can be used directly as the primary optics of the lamp. In addition, it can perform its usual function as a carrier of the light-generating components of the lamp. In this way it is possible that the number of steps in the assembly of the lamp is kept low, that the entire construction is designed relatively easily and can be prepared, and that the handling is relatively comfortable and efficient, especially during assembly and maintenance of the lamp.

The at least one light source is preferably an LED light source. LED lamps have various advantageous properties such as high energy efficiency, long service life and cost-effective production. They are enjoying increasing popularity. However, it is often desirable to adapt the light generated by LED light sources by means of primary optics, so that the light according to the invention can also be advantageous in particular with LED light sources. In this case, the LED illuminant preferably comprises a printed circuit board, possibly with control electronics, and at least one light-emitting diode. Such LED lamps can be efficiently attached and used on the light bar, especially in large numbers.

The translucent material of the light bar is preferably adapted to the at least one light source and the operating device in such a way that light emitted by the at least one light source and penetrating the light bar has a predefined emission characteristic. With the predefined emission characteristics, properties of the at least one illuminant such as scattering, attenuation, beam direction, focusing and/or color or tone can be adjusted in a desired manner. In this way, the light bar can be configured efficiently as a primary optic and the combination of light bar and light source can be inserted and used efficiently and easily.

The translucent material of the light bar is preferably a plastic and in particular a polycarbonate or a polymethyl methacrylate (PMMA). Such plastics enable, on the one hand, a robust configuration of light strips in many possible geometries. On the other hand, they can be translucent in a variety of ways, so that the desired emission characteristics can be predefined flexibly and adapted to an intended area of use. In addition, light strips can be produced from such a material relatively easily and inexpensively and have other properties preferred for use, such as elasticity or longevity.

The lamp preferably comprises a carrier profile on which the at least one operating device and the at least one lamp are fixedly mounted, with the carrier profile being detachably mounted on the light bar. The carrier profile can have a relatively simple geometry. For example, it can essentially be designed like a slat or a board. Such a carrier profile enables a relatively simple installation of the light-generating components of the lamp. In particular when the lamp is designed with a large number of light sources, such a carrier profile enables simple handling and simple maintenance. For example, the carrier profile can be replaced or replaced en bloc together with the lamps in a relatively simple manner.

In cross-section, the light strip comprises a front section and two side wings, each adjoining the front section, which are opposite one another and are essentially mirror-symmetrical. In this context, the term “in cross section” refers to a section transverse to a longitudinal direction or to an upright or vertical orientation of the luminaire. Such a design of the light strip allows the at least one light source to be efficiently enclosed. At the same time, the light bar can also be assembled and disassembled relatively easily.

In this case, the side wings of the light strip form an obtuse angle with the front section, preferably in cross-section, in each case at a transition area adjoining the front section. In this way, the front section and the two side wings can be configured together in the transition area in cross-section essentially trapezoidal, so that the Light bar in the first area widens against the front section. In this way an interior of the light strip can be relatively easily accessible.

The side wings of the light strip preferably have holding means on their insides and the support profile has corresponding holding means, the support profile being detachably mounted on the light strip by the holding means of the support profile interacting with the holding means of the side wings. The holding means of one of the two side wings are preferably hook-shaped in cross section and open toward the front section, and the holding means of the other of the two side wings are preferably hook-shaped in cross section and open toward the front section. In the case of a linear, elongated design of the light strip, the holding means can be designed as hook-shaped rails. One of the holding means of the carrier profile is preferably designed as a socket arranged on one transverse side of the carrier profile, so that it encompasses the hook-shaped holding means of one of the two side wings, and the other of the holding means of the carrier profile is preferably hook-shaped in cross section and on the other transverse side of the Support profile so that it engages in the hook-shaped holding means of the other of the two side wings. In this way, the carrier profile can be efficiently inserted or snapped into the light bar. In particular, to remove the carrier profile from the light bar, the light bar can be deformed so elastically that the hook-shaped holding means of the other of the two side wings is lifted out of the hook-shaped holding means of the carrier profile and the carrier profile is thus detached from the light bar. Alternatively, the carrier profile can be pushed lengthwise out of the light bar and removed in this way.

The front section of the light strip preferably describes two eyes in cross section and a nose lying between them. In one version of the lamp with an LED bulb, the nose of the front section can Enclose light-emitting diode and the two eyes each other components such as for example fasteners. With such eyes and the nose, the light bar can be provided with various functions. For example, the direction of the light radiation or its scattering can be defined. Or a transfer of heat away from the light emitting diode can be promoted. A support or support, which supports the at least one light source, is preferably arranged on or next to the nose of the front section of the light strip. A configuration of the front section with a support can, among other things, further promote the heat transfer.

The side wings of the light bar preferably have a concave curvature in cross section and the base profile has two corresponding projections, the light bar being detachably mounted on the base profile by the projections of the base profile engaging in the concave curvatures of the side wings of the light bar. To remove the light bar from the base profile, the light bar can be elastically deformed until the projections of the base profile no longer engage in the receptacles formed by the curvatures. In particular, this can be done by moving the side wings of the light strip towards one another.

According to the invention, the side wings of the light strip each have a tapered area in cross-section towards their ends facing away from the front section, with the outer sides of the tapered areas being designed with a bevel. Such tapered areas enable the light strip to be pressed against the projections of the base profile for assembly, as a result of which the side wings are pressed together until the projections engage in the receptacles formed by the curves. The light bar can be easily and efficiently snapped into the base profile for installation.

The lamp preferably includes an external diffuser which at least partially encloses the light bar and the lamp. Such an external diffuser can be used as secondary optics be translucent at least in a certain spectrum or range.

Brief description of the drawings

Fig. 1

eine Querschnittsansicht einer Lichtleiste mit einem montierten Trägerprofil eines Ausführungsbeispiels einer erfindungsgemässen Leuchte;

Fig. 2

eine Querschnittsansicht eines Basisprofils der Leuchte von Fig. 1;

Fig. 3

eine Querschnittsansicht des am Basisprofil von Fig. 2 lösbar montierten Trägerprofils von Fig. 1; und

Fig. 4

eine Querschnittsansicht der zusammengesetzten Leuchte der vorangehenden Figuren.

Further advantageous refinements of the invention result from the following description of an exemplary embodiment of the invention with the aid of the schematic drawing. In particular, the light according to the invention is described in more detail below with reference to the accompanying drawings based on an exemplary embodiment. Show it:

1

a cross-sectional view of a light bar with a mounted carrier profile of an embodiment of a lamp according to the invention;

2

a cross-sectional view of a base profile of the luminaire of FIG 1 ;

3

a cross-sectional view of the base profile of 2 detachably mounted carrier profile 1 ; and

4

a cross-sectional view of the assembled lamp of the previous figures.

Way(s) for carrying out the invention

Certain terms are used in the following description for convenience and are not intended to be limiting. The words "right", "left", "down" and "up" denote directions in the drawing to which reference is made. The terms "inward" and "outward" refer to directions toward or away from the geometric center of the luminaire and named parts thereof. The terminology includes the words expressly mentioned above, derivatives thereof and words of similar import.

The following definition also applies to the entire further description: If reference numbers are contained in a figure for the purpose of graphic clarity, but directly in the figure associated descriptive text is not mentioned, reference is made to their explanation in the preceding figure descriptions. If, in addition, in the descriptive text belonging directly to a figure, reference signs are mentioned which are not contained in the associated figure, then reference is made to the preceding and following figures.

1 shows an elongated light bar 2 and a carrier profile 3 mounted therein of an embodiment of a lamp 7 according to the invention. The light bar 2 comprises a front section 21 with two eyes 211 and a nose 212 lying between them, a first side wing 22 adjoining the front section 21 on the right and an opposite, The first side wing 22 and the second side wing 23 each have a transition region 221, 231 directly adjoining the front section 21. The two transition regions 221, 231 each circumscribe an obtuse angle with the front section 21 and together with this form an upwardly open trapezium.

On the inside of the transition region 221 of the first side wing 22 there is a holding means 222 which is hook-shaped in cross-section and is therefore open towards the front section 21 . On the inside of the transition area 231 of the second side wing 23 , at the same height, there is a holding means 232 which is hook-shaped in cross section and is therefore open towards the front section 21 . The two hook-shaped holding means 222, 232 extend along the first side wing 22 or the second side wing 23 and thus each form a rail with a hook-shaped cross section. The carrier profile 3 is arranged in the light strip 2, the carrier profile 3 having a longitudinal base plate 33, on the right side of which a hook-shaped holding means 32 and on the left side a socket 31 are designed as holding means. The socket 31 corresponds to the hook-shaped holding means 232 of the second Side wing 23 and the hook-shaped holding means 32 of the carrier profile 3 to the hook-shaped holding means 222 of the first side wing 22. The socket 31 engages around the hook-shaped holding means 232 of the second side wing 23 and the hook-shaped holding means 222 of the first side wing 22 lies in the hook-shaped holding means 32 of the carrier profile 3 the carrier profile 3 is mounted on the light bar 2 and is held by it. In this position, the carrier profile 3 and the light bar 2 together form a unit and can be handled in one operation. For example, the unit can be mounted on the base profile 1 in one step.

The carrier profile 3 is equipped on an upper side of its base plate 33 with a plurality of ballasts 5 as operating devices and on an underside of its base plate 33 with a plurality of LED lamps 4. The LED lamps 4 each have a circuit board, possibly with control electronics and at least one LED 41 on. The circuit board is fastened to the base plate 33 of the carrier profile 3 with a first screw 42 and the ballast 5 with a second screw 43 .

The front section 21 of the light bar 2 has the two eyes 211 and the nose 212, one of the eyes 211 - in 1 is this the right one - the second screw 43, and the other of the eyes 211 - in 1 if this is the left one - covers the first screw 42 to the outside. The nose 212 encloses the light-emitting diode 41 in its intended emission direction, ie essentially downwards. As a result, the light strip 2 can define or influence the emission characteristics of the LED lighting means 4 . Furthermore, on the nose 212 of the front section 21 of the light strip 2 there is a support 213 which extends in the direction of the carrier profile 3 and on which the carrier profile 3 rests. The support 213 also serves to press the LED circuit board against the carrier profile 3 over its entire length in order to promote heat transfer.

The transition regions 221, 231 of the first side wing 22 and of the second side wing 23 each merge upwards into a concave curvature 223, 233, from which in turn a tapered region 224, 234 extends upwards. The tapered areas 224, 234 of the first side wing 22 and the second side wing 23 have a beveled outer surface 225, 235, respectively.

In 2 a base profile 1 of the lamp 7 is shown in cross section. The base profile 1 comprises a base section which is essentially flat on the outside and a side section which is arranged at a right angle thereto. The base section and the side sections of the base profile 1 have several longitudinal struts on their insides, with which the base profile 1 is stabilized. At an end facing away from the base section, the side sections each have an inwardly extending projection 11 . On the outside, the side sections each have a groove 12 with a triangular cross section approximately halfway up.

3 shows the light bar 2 detachably mounted in the base profile 1. For assembly, the light bar 2 is pressed against the base profile 1 in such a way that the two projections 11 rest on the beveled outer sides 225, 235 of the tapered areas 224, 234 of the first side wing 22 and the second side wing 23 work. As a result, the first side wing 22 and the second side wing 23 are bent towards one another or elastically deformed until the projections 11, past the tapered areas 224, 234, engage from the outside in the concave curvatures 223, 233 of the first side wing 22 and the second side wing 23 . The first side wing 22 and the second side wing 23 are moved outwards again in this position, so that the projections 11 arranged in the concave curvatures 223, 233 hold the light bar 2 on the base profile 1. The light bar 2 is thus snapped into the base profile 1 and releasably mounted on it.

To disassemble the light bar 2 from the base profile 1, the process described above is to be carried out in reverse in an analogous manner.

In 4 the lamp 7 is completed by an external diffuser 6. The outer diffuser 6 is configured in cross section as a rectangle open on one broad side. The longitudinal sides of the outer diffuser each have a bar-shaped latching lug 61 on their inner side, which is arranged in the grooves 12 of the base profile 1 so that the outer diffuser 6 is held on the base profile 1 .

Although the invention has been illustrated and described in detail by means of the figures and the associated description, this illustration and this detailed description are to be understood as illustrative and exemplary and not as limiting the invention. It is understood that changes and modifications can be made by those skilled in the art without departing from the scope of the following claims.

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

Furthermore, the term "comprising" and derivatives thereof does not exclude other elements or steps. The indefinite article also includes "ein" or "eine" and Derivatives from it a multitude not from. The functions of several features listed in the claims can be fulfilled by a unit or a step. The terms “substantially”, “approximately”, “approximately” and the like in connection with a property or a value in particular also precisely define the property or 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. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims (12)

1. Light (7) comprising a base profile (1) and a light strip (2), on which at least one operating device (5) and at least one lamp (4) that can be operated by means of the operating device (5) are arranged, the light strip (2) being detachably mounted on the base profile (1), being made of a translucent material and surrounding the at least one lamp (4) in the intended direction of emission thereof, the light strip (2) comprising, in cross section, a front portion (21) and two side wings (22, 23) that each adjoin the front portion, are opposite one another and are substantially mirror-symmetrical, characterized in that the side wings (22, 23) of the light strip (2), in cross section, each have a tapered region (224, 234) toward the ends thereof that face away from the front portion (21), the outer faces (225, 235) of the tapered regions (224, 234) being beveled.
2. Light (7) according to claim 1, wherein the at least one lamp (4) is an LED lamp (4).
3. Light (7) according to claim 2, wherein the LED lamp (4) comprises a printed circuit board having at least one light-emitting diode (41).
4. Light (7) according to any of the preceding claims, wherein the translucent material of the light strip (2) is adapted to the at least one light source (4) and the operating device (5) in such a way that light that is emitted by the at least one lamp (4) and penetrates the light strip (2) has a predefined radiation characteristic.
5. Light (7) according to any of the preceding claims, wherein the translucent material of the light strip (2) is a plastics material and in particular a polycarbonate or polymethyl methacrylate.
6. Light (7) according to any of the preceding claims, comprising a carrier profile (3) on which the at least one operating device (5) and the at least one lamp (4) are fixedly mounted, the carrier profile (3) being detachably mounted on the light strip (2).
7. Light (7) according to any of the preceding claims, wherein the side wings (22, 23) of the light strip (2), in cross section, each form an obtuse angle with the front portion (21) at a transition region (221, 231) adjoining the front portion.
8. Light (7) according to claim 7, wherein the side wings (22, 23) of the light strip (2) each have holding means (222, 232) on the inner faces thereof and the carrier profile (3) has corresponding holding means (31, 32), wherein the carrier profile (3) is detachably mounted on the light strip (2) by the holding means (31, 32) of the carrier profile (3) interacting with the holding means (222, 232) of the side wings (22, 23) of the light strip (2).
9. Light (7) according to claim 8, wherein the holding means (232) of one of the two side wings (23) is hook-shaped in cross section and open counter to the front portion (21), and the holding means (222) of the other of the two side wings (22) is hook-shaped in cross section and open toward the front portion (21).
10. Light (7) according to claim 9, wherein one of the holding means (31, 32) of the carrier profile (3) is formed as a socket (31) arranged on one transverse side of the carrier profile (3), such that said holding means surrounds the hook-shaped holding means (232) of one of the two side wings (23), and the other of the holding means (32) of the carrier profile (3) is hook-shaped in cross section and is formed on the other transverse side of the carrier profile (3), such that said holding means engages into the hook-shaped holding means (222) of the other of the two side wings (22).
11. Light (7) according to any of the preceding claims, wherein the side wings (22, 23) of the light strip (2) each have a concave curvature (223, 233) in cross section and the base profile (1) has two corresponding projections (11), wherein the light strip (2) is detachably mounted on the base profile (1) by the projections (11) of the base profile (1) engaging in the concave curvatures (223, 233) of the side wings (22, 23) of the light strip (2).
12. Light (7) according to any of the preceding claims, comprising an external diffuser (6) that at least partially surrounds the light strip (2) and the lamp (4).

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