DE102019106678A1 - Modular wall and shelf washers - Google Patents

Abstract

The invention relates to a lighting system comprising a support profile and a light unit, wherein the support profile comprises a first profile element, in particular an extruded aluminum profile, and has an electrical tap which is used for contacting electrical cabling, e.g. is set up in the busbar, and the support profile also receives an electrical ballast, and wherein the light unit has a second profile element, in particular an aluminum extrusion profile, which has semiconductor light elements arranged linearly along its longitudinal extension and optics assigned to the semiconductor light sources, the second profile element in its Longitudinal extension is aligned parallel to the first profile element of the support profile and is pivotably mounted in the support profile about an axis parallel to the longitudinal extension of the first and second profile element.

Description

The present invention relates to a lighting system which is particularly set up to illuminate shelves and possibly adjoining walls in shops. Such lights are also referred to as shelf or wall washers.

For the targeted illumination of shelves and walls, linear luminaires are used in the prior art, which are either unshielded or have lighting technology. For example, the lights can be mounted in the form of gondolas between the shelves on the ceiling. However, the luminaires sometimes create a strong glare for customers, especially if the luminaire is also used to illuminate the space between the shelves. Furthermore, the linear luminaires often have massive heat sinks, which impair the appearance of the luminaire.

The object of the present invention is to provide a lighting device for use as a shelf washer or wall washer which can illuminate the sales shelves without glare and which can also be easily adapted to the individual local conditions.

The object is achieved by a lighting system according to claim 1.

A special feature of the lighting system of the present invention lies in the configuration of the support profile and light unit, which are each formed from a profile element. The use of profile elements has several advantages. The lights can be easily dimensioned differently because the length of the profile elements can be individually adjusted. Furthermore, the use of a profile element, in particular an aluminum profile, for the light unit has the advantage that the profile element can also serve as a heat sink for the semiconductor light sources provided in the light unit. According to the invention, the two profile elements of the light unit and the carrier unit are arranged in one another and pivotable to one another along an axis of the longitudinal extension of the profile elements. As a result, the light unit can be pivoted relative to the carrier profile in order to optimally align the light output to the goods to be illuminated in the shelves, depending on the mounting height of the lighting system and the height of the shelves to be illuminated. The advantage here is that the pivotability is only provided in the longitudinal direction of the profile elements, because the lighting system is parallel to the shelves to be illuminated, e.g. along aisles between the shelves. The carrier profile can be connected via a busbar system. It is provided that the electrical tap provided in the support profile engages in the wiring in the busbar system. However, it can also be provided that the lighting system is designed as a built-in or semi-built-in light. In this case, the electrical tap of the support profile also intervenes in the building's wiring.

According to a preferred embodiment, the first and the second profile element have different lengths. This makes it possible to adapt the profile element of the light unit to the number of semiconductor light sources provided in a row and to adapt the profile element of the carrier profile to the type, i.e. to adapt to the length of the electrical ballast to be used. If the lighting system is set up for connection to a power rail, the profile elements of the carrier profiles can also be set up in such a way that they border one another without gaps along the power rail. In general, the profile element of the support profile is longer than the profile element of the lighting unit.

According to a further preferred embodiment, the second profile element has end walls which are each designed in two pieces and the two pieces of each end wall can be mechanically joined together, in particular plugged, in different angular positions, the light unit being held on the carrier profile by means of the end walls, so that Angular positions of the side walls joined together defines the pivoting movement of the second profile element relative to the first profile element. The design of the mechanism for the pivoting movement in the form of two-part end walls is advantageous because it means that no axis is required to pivot the light unit relative to the carrier profile. Furthermore, the front parts can also serve to accommodate the cabling. The end walls are arranged at the two opposite ends of the light unit and will generally not form both end walls of the support profile at the same time. However, it is provided that in particular one end wall of the support profile and the light unit are aligned with one another and that these end faces are covered with an end wall. At least one of the end walls can preferably be mounted at any point along the longitudinal extent of the carrier profile. This means that the same support profile can be used for lighting units of different lengths.

According to a further preferred embodiment, the optics assigned to the semiconductor light sources each have a primary and a secondary reflector, the primary reflector being arranged adjacent to the respective semiconductor light source and being set up to convey the light reflecting the semiconductor light source onto the respective secondary reflector, the secondary reflector deflecting the light laterally with respect to an optical axis of the primary reflector. The primary reflector serves to reduce glare from the luminaire and to prepare the light beams for the secondary reflector. The secondary reflector is used to deflect the light beams onto the surface to be illuminated and to generate the desired light distribution. A particular advantage is that the primary reflectors can be combined with different secondary reflectors. This makes it possible to set up the same lighting unit for the desired purpose, for example as a wallwasher or shelf washer, with only the secondary reflector having to be adapted.

According to a further preferred embodiment, at least some of the secondary reflectors are shell-shaped. The shell-shaped arched secondary reflectors create a broad illumination of the target area. The curvature or the ratio of length to width of the secondary reflector can be set individually in order to create different light distributions. It is also possible to design a strongly focusing secondary reflector in order to create accents of lighting on the target area. In general, however, secondary reflectors with a wide distribution are preferred for illuminating the shelf or wall surfaces over their length.

According to a further preferred embodiment, the secondary reflectors of the plurality of semiconductor light sources are each designed the same or at least two of the secondary reflectors are designed differently. If the lighting unit is only used to illuminate a shelf surface, the secondary reflectors are preferably used in the lighting unit for this lighting task. If the light unit is used to illuminate a shelf and wall surface, the use of single-type secondary reflectors is preferably also advantageous for this lighting task. Depending on the room situation, it is also possible that the same light unit is used to illuminate different sections of shelves or walls. In this case, the types of secondary reflectors within a light unit can also be different. For example, one or more secondary reflectors can be used at one end of the light unit, which illuminate a lateral section of the room beyond one shelf end of an aisle, while the remaining secondary reflectors in the light unit are intended to illuminate a continuous row of shelves. Accordingly, secondary reflectors of different designs can be combined in one light unit.

According to a further preferred embodiment, the secondary reflectors are latched into receptacles on the second profile element, the latching connection being releasable. The inclusion of the secondary reflectors by detachable snap-in connections is advantageous because it allows the secondary reflectors to be exchanged even after the lighting units have been installed in order to adapt the light distribution individually to the spatial conditions.

According to a further preferred embodiment, the optics furthermore have at least one additional reflector, which is arranged within one of the secondary reflectors and is set up to absorb part of the light which is emitted from the primary reflector to the secondary reflector by an angle of at least 30 ° with respect to the Deflect the main emission direction of the secondary reflector. The additional reflector is used in particular to use the light distribution of the lighting device to illuminate a corridor section in front of the shelf to be illuminated. The additional reflector deflects part of the light incident on the secondary reflector downwards by at least 30 ° in order to illuminate the horizontal surface in front of the shelf section. In a light distribution curve of the C180-0 plane, the additional reflector also generates a secondary maximum which is approximately in the range of ± 10 °.

According to a further preferred embodiment, the additional reflector is detachably plugged into the light unit. The additional reflector can e.g. be inserted into a slot on the receptacle of the secondary reflector or in the secondary reflector itself. Other releasable connections, e.g. a screw connection are also conceivable. The advantage is that the additional reflector can be retrofitted at any time or can still be installed individually at the installation location of the lighting system. In particular, it is also provided that the additional reflectors are built into only some of the secondary reflectors of the light unit. This allows the amount of light to illuminate the aisle in front of the shelf to be set individually.

According to a further preferred embodiment, the secondary reflectors have faceting, in particular hexagonal faceting. The faceting of the secondary reflectors enables a homogeneous color and brightness distribution on the surface to be illuminated.

According to a further preferred embodiment, the semiconductor light sources are arranged on a circuit board which is in flat contact with the second profile element in order to produce a thermal connection to the second profile element. By using a profile element, in particular made of aluminum or another metal there is no need for a separate heat sink for the semiconductor light sources. For this purpose, the semiconductor light source with the circuit board is attached flat to the profile element of the light unit, whereby flat mounting can also be understood to mean that an insulating layer can be provided between the circuit board and the metallic profile element. The insulating layer, however, is so thin that heat can be transported almost unhindered between the semiconductor light sources and the profile element.

According to a further preferred embodiment, the board also carries part of the optics, in particular at least one of the primary reflectors. As a result, the unit can be prefabricated from semiconductor light sources and primary reflectors and individually cut to the length of the light unit. Furthermore, the alignment of the primary reflector with the light source is very precise when both components are mounted on the same circuit board. Even if the circuit board and the profile element in the light unit have different thermal elongation, the alignment of the primary reflector to the semiconductor light source is retained. The secondary reflector, on the other hand, can also be mounted directly or indirectly on the profile element of the lighting unit. Since the secondary reflector has a larger spatial extent, a slight tolerance with regard to the position of the semiconductor light source or the primary reflector is acceptable.

• 1 zeigt eine perspektivische Ansicht eines Beleuchtungssystems gemäß einer ersten Ausführungsform.
• 2 zeigt eine perspektivische Ansicht eines Beleuchtungssystems gemäß einer zweiten Ausführungsform.
• 3 zeigt eine Seitenansicht des Beleuchtungssystems der ersten Ausführungsform.
• 4 zeigt einen Querschnitt durch das Beleuchtungssystem entsprechend der Abbildung in 3.
• 5 zeigt eine Seitenansicht des Beleuchtungssystems der zweiten Ausführungsform.
• 6 zeigt einen Querschnitt durch das Beleuchtungssystem entsprechend der Abbildung in 5.
• 7 zeigt einen Querschnitt durch das Beleuchtungssystem nach beiden Ausführungsformen spiegelverkehrt zu den Abbildungen in 4 und 6.
• 8 zeigt einen Querschnitt senkrecht zur Längserstreckung des Beleuchtungssystems der ersten Ausführungsform.
• 9 zeigt einen Querschnitt senkrecht zur Längserstreckung des Beleuchtungssystems der zweiten Ausführungsform.
• 10 zeigt eine Lichtverteilungskurve in der C-180-0-Ebene des Beleuchtungssystems der ersten Ausführungsform.
• 11 zeigt eine Lichtverteilungskurve in der C-180-0-Ebene des Beleuchtungssystems der zweiten Ausführungsform.

Further features and advantages of the present invention will become clear from the following description of preferred embodiments, which is given in conjunction with the accompanying figures. The figures show the following:

• 1 shows a perspective view of a lighting system according to a first embodiment.
• 2 shows a perspective view of a lighting system according to a second embodiment.
• 3 Fig. 10 shows a side view of the lighting system of the first embodiment.
• 4th shows a cross section through the lighting system corresponding to the figure in FIG 3 .
• 5 Fig. 13 shows a side view of the lighting system of the second embodiment.
• 6th shows a cross section through the lighting system corresponding to the figure in FIG 5 .
• 7th FIG. 13 shows a cross section through the lighting system according to both embodiments, mirror-inverted to the figures in FIG 4th and 6th .
• 8th shows a cross section perpendicular to the longitudinal extension of the lighting system of the first embodiment.
• 9 shows a cross section perpendicular to the longitudinal extension of the lighting system of the second embodiment.
• 10 Fig. 13 shows a light distribution curve in the C-180-0 plane of the lighting system of the first embodiment.
• 11 Fig. 13 shows a light distribution curve in the C-180-0 plane of the lighting system of the second embodiment.

The lighting systems according to the present invention comprise a modular system which has a support profile 4th and a light unit 2 in the first embodiment and a light unit 3 in the second embodiment. The first embodiment forms a shelf washer and the second embodiment forms a wallwasher. The embodiments differ only in the design of a secondary reflector, whereby different light distributions are achieved, as follows in connection with the 10 and 11 is explained.

Both embodiments are described below, the same reference symbols being used for the elements of the two embodiments that correspond to one another.

The carrier profile 4th comprises an aluminum extrusion profile 46 . This is flexible in terms of its length and thus enables different ballasts to be accommodated 42 and additional electrical components. The carrier profile 4th can be connected to a power rail 1 be connected. The mechanical and electrical contacting of the carrier profile is made via the busbar 1 . For this purpose, the carrier profile 4th an electrical tap 44 on as well as mechanical locks 41 and a bracket 47 that are on the power rail 1 or in the electrical wiring of the busbar 1 intervention. The carrier profile 4th has an aluminum profile 24 on, which can be individually made lengthways, as well as locking end walls mounted on it 45 that have a mechanical connection for the lighting unit 2 or. 3 Offer.

The light unit 2 or. 3 also has an aluminum profile 24 , which can be made individually in length. In particular, it is provided, as shown in the figures, that the aluminum profile 24 the light unit 2 or. 3 shorter than the aluminum profile 46 of the carrier profile 4th is. Depending on the number of lamps required, the lighting unit can be made shorter or longer. On the other hand, it can depend on the electrical ballasts to be used 42 the carrier profile must be dimensioned accordingly.

The light unit 2 or. 3 can be swiveled in the carrier profile 4th stored. The adjustment mechanism and thus the alignment of the lighting technology is carried out by the side-mounted end walls 21st , which with the associated locking end walls 45 provide the necessary adjustment mechanism. The two parts 21st and 45 of the end walls are locked into each other by a plug connection, the two parts being pivotable against each other. You can also snap on part of the front wall 21st or 45 be provided in notches of the opposite part 45 or 21st intervene to lock the connection of the two parts in three or more angular positions to each other.

The one-piece aluminum profile 24 the light unit 2 or. 3 serves to accommodate primary reflectors 27 and secondary reflectors 22nd in the first embodiment and 31 in the second embodiment. On the aluminum profile 24 the light unit 2 or. 3 are semiconductor light sources 28 on a circuit board 29 kept with the board 29 at the same time as a holder for the semiconductor light sources 28 individually assigned primary reflector 27 serves. The printed circuit board is located for a better thermal connection 29 flat on the aluminum profile 24 on. This allows the aluminum profile 24 as a heat sink for the semiconductor light sources 28 serve. The one directly at the semiconductor light source 28 placed primary reflector 27 serves to reduce glare and to prepare the light radiation for the secondary reflector 22nd or. 31 .

The secondary reflectors 22nd or. 31 form a so-called wallwasher in the first embodiment and a shelfwasher in the second form. The light distribution curves that are generated with the different secondary reflectors are in the 10 or. 11 shown. The light distribution of the shelf washer has a maximum at around 30 ° in the C180-0 plane (this corresponds to the sectional plane according to FIGS 8th and 9 ) on. For the wallwasher, the maximum light distribution is somewhat lower in the range between 20 ° and 30 °. The wallwasher also has a more pronounced secondary maxima or shoulder at an angle of over 40 ° compared to the shelf washer. The light distribution of the shelf washer is specially designed to illuminate the goods on a shelf that is set up to the side of the longitudinal extension of the lamp. In particular, the upper rows of shelves are illuminated in their depth. In contrast, the wallwasher is designed with a light distribution which also illuminates an adjacent wall section.

The secondary reflectors 22nd or. 31 in both embodiments are from a holder 23 in the light unit 3 held. The holder 23 is designed as a spring element and holds the secondary reflector 22nd or. 31 on an edge. The connection is detachable so that the secondary reflectors can easily be exchanged. This makes it possible to replace the secondary reflectors even when the luminaire is still installed. According to the invention, other forms of secondary reflectors can also be used. Depending on the area to be illuminated, the secondary reflectors can have different shapes. The shell-shaped configuration shown in the figures is preferred, the secondary reflectors differing in particular in the ratio of length to width of the shell shape. Even wider and even shorter reflectors are also conceivable. The secondary reflectors preferably have 22nd or. 31 as in the 8th and 9 shown, a faceting. The faceting enables a homogeneous color and brightness distribution on the surface to be illuminated.

The two illustrated embodiments also have an additional reflector 26th which is inserted into the receptacle of the secondary reflector. The additional reflector 26th can optionally be built into the luminaire and is used to deflect part of the light from the secondary reflector downwards. This part of the light can be used to illuminate the aisle area in front of the shelf. It is therefore possible according to the invention not only to use the lighting system for illuminating shelves or wall sections, but also to illuminate the traffic area in front of the shelves at the same time. This eliminates the need for additional lighting that takes on this task.

In the two illustrated embodiments, the secondary reflectors are 21st or. 33 each only sorted in one light unit 3 used. However, it is possible to mix the reflector shapes or, if necessary, further reflector shapes in one light unit 3 to use. Since the secondary reflectors are held in the aluminum profile of the light unit by the snap mechanism described, different reflectors can be combined without great effort in order to individually adapt the lighting to the local conditions. Furthermore, it is also possible to provide the additional reflector only in some of the secondary reflectors of a light unit. Depending on the amount of light that is needed to illuminate the aisle in front of the shelf, only some of the secondary reflectors in the lighting unit can be converted for this task by providing the additional reflector.

The illustrated lighting system therefore enables the lighting units to be adjusted to the individual circumstances in a modular manner. The units can be arranged in a row, e.g. a busbar attached. But it is also possible to carry out the arrangements polygonally. Due to the modular structure, the units can therefore be manufactured individually in length. This creates a high degree of flexibility for the desired light output and with regard to the thermal requirements.

List of reference symbols

1

Busbar

2; 3

Light unit

4th

Support profile

21st

Part of the front wall

22; 31

Secondary reflector

23

holder

24

second profile element

26th

Additional reflector

28

Semiconductor light source

29

circuit board

41

mechanical lock

42

Ballast

43

holder

44

electrical tap

45

Part of the front wall

46

first profile element

47

Bracket

Claims (12)

Lighting system comprising a support profile (4) and a light unit (2; 3), wherein the carrier profile (4) comprises a first profile element (46), in particular an extruded aluminum profile, and has an electrical tap (44) which is used for contacting electrical cabling, e.g. is set up in the busbar (1), and the carrier profile also receives an electrical ballast (42), and wherein the light unit (23) has a second profile element (24), in particular an extruded aluminum profile, which has semiconductor light sources (28) arranged linearly along its longitudinal extension and optics (22; 31, 27) assigned to the semiconductor light sources (28), the second profile element (24) is aligned in its longitudinal extension parallel to the first profile element (46) of the carrier profile (4) and is mounted in the carrier profile pivotably about an axis parallel to the longitudinal extension of the first and second profile elements (46, 24). Lighting system according to Claim 1 wherein the first and the second profile element (46, 24) have different lengths. Lighting system according to one of the preceding claims, wherein the second profile element (24) has end walls (21, 45) which are each designed in two pieces and the two pieces of each end wall (21, 45) can be mechanically joined together, in particular plugged, in different angular positions, wherein the light unit is held on the support profile by means of the end walls, so that the pivoting movement of the second profile element relative to the first profile element is defined by the angular positions of the side walls (21, 45) joined together. Lighting system according to one of the preceding claims, wherein the optics assigned to the semiconductor light sources (28) each have a primary (27) and a secondary reflector (22; 31), the primary reflector (27) is arranged adjacent to the respective semiconductor light source (28) and therefore is set up to reflect the light of the semiconductor light source (28) onto the respective secondary reflector (22; 31), the secondary reflector (22; 31) deflecting the light laterally with respect to an optical axis of the primary reflector. Lighting system according to Claim 4 wherein the at least some of the secondary reflectors (22; 31) are shell-shaped. Lighting system according to Claim 4 or 5 wherein the secondary reflectors (22; 31) of the plurality of semiconductor light sources (28) are each designed the same or at least two of the secondary reflectors (22; 31) are designed differently. Lighting system according to one of the Claims 4 to 6th , wherein the secondary reflectors (22; 31) are locked in receptacles on the second profile element and the locking connection can be released. Lighting system according to one of the Claims 4 to 7th , wherein the optics furthermore have at least one additional reflector (26) which is arranged within one of the secondary reflectors (22; 31) and is set up to absorb part of the light which from the primary reflector (27) to the secondary reflector (22; 31) is emitted in order to deflect an angle of at least 30 ° with respect to the main emission direction of the secondary reflector (22; 31). Lighting system according to Claim 8 , wherein the additional reflector (26) is detachably plugged into the light unit (2; 3). Lighting system according to one of the Claims 4 to 9 wherein the secondary reflector (22; 31) has a faceting, in particular a hexagonal faceting. Lighting system according to one of the preceding claims, wherein the semiconductor light sources (28) are arranged on a circuit board (29) which is in flat contact with the second profile element (24) in order to produce a thermal connection to the second profile element. Lighting system according to Claim 11 , wherein the board (29) also part of the optics, in particular when referring back to one of the Claims 4 to 10 at least one of the primary reflectors (27) carries.

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