EP3499118A1 - Luminaire, particularly suspended luminaire - Google Patents

Abstract

The invention relates to a luminaire, in particular for street lighting and in particular a rope suspension luminaire, at least with a housing (16), with a module with light-emitting elements, such as an LED plate (12), and with a ballast (10) for the light-emitting elements In order to meet various requirements, in particular to achieve high surge protection, it is provided that a support (1) made of plastic is provided for the individual components, which has at least one area with holes (4), preferably also recesses and depressions ( 7), provided plate (2) or consists of this, and that on at least one side of the plate (2) and preferably integrally formed with it, ribs and / or fins (3) projecting from it are provided, on which the illuminants are attached.

Description

The invention relates to a luminaire, in particular for street lighting and in particular a cable suspension lamp, at least with a housing, with a module having light-emitting elements, in particular LEDs, with an electronic driver for the light-emitting elements and with a support for the individual components, respectively the preamble of claim 1.

From the WO2016 / 151441A1 a luminaire is known in which a housing is provided in its interior with ribs which extend approximately radially and in the light emission direction. At one end of these ribs, a flat plate is attached to the bulbs, at the other end a flat disc with the associated electronics. The ribs provide thermal insulation according to the distance they ensure between the parts. This device fulfills its purpose, but is expensive to manufacture and especially in the assembly.

From the EP 3 076 068 A1 a linear luminaire is known, which has an elongated support body, which consists essentially of two flat plates which are close to each other. On the bottom, the light-emitting side, the bulbs are provided mounted on a separate plate and protected by its own cover, on the other side of the double plate, the electronics is provided. It is thus removed the electronics from the actual housing, so that at least this heat source is not in the housing with the bulbs. The structure is complex and also susceptible to interference in rough operation.

From the EP 2 827 053 A1 a very similar construction is known in which the support unit, with a larger volume than in the aforementioned document, is provided, probably to improve the heat dissipation. The electronics are also housed outside this actual housing and above it. Also, this solution is complex and complex and requires, as is apparent in particular from the drawings, various specialized fasteners and fasteners that make the device expensive and above all prone to failure in harsh operation.

Previously known lamps use a metallic support for the arranged on a so-called LED plate LEDs for thermal reasons. The LED driver unit is also attached to the metallic carrier by means of an angle. This is eccentrically arranged for reasons of space, which makes the provision of a balance weight necessary in rope suspension lights to bring the center of gravity in the desired position, so that the lamp is bulky and heavy overall. The wiring and the connection with the housing is then model by model different, and the metallic support is each another. In luminaire, which are attached to poles or beams on buildings or similar structures, the position of the center of gravity does not play such a big role, but it will also be used here to the respective situation customized custom-made.

Numerous, partly contradictory, demands are made on such luminaires, with the specified "functions" to be fulfilled not being listed exhaustively or after a prioritization: the luminaires should in particular be in the plastic version, being UV-resistant and frost-proof, have low weight and low production costs, it should as many of its components in as many different lights or lights of different thickness can be used (modular design), the light should be optionally suitable for different light sources, in addition to the conventional and contemporary as LEDs, Semiconductor laser and others, still under development, the light source should provide over-voltage protection of preferably more than 10 kV, in particular in suspended lights but also in general and because of difficult grounding, it must be the derivative of the thermal Be assured excess, it should be the electronic driver unit for the light sources easily and possibly with the appropriate center of gravity (central) mountable and cause no thermal problems. In addition, it is generally desirable to allow the management of the cables and their connectors without separate components, to allow the mounting of sensors, for example, to measure the LED module temperature, easily and without additional mounting aids, and of course, the contact protection of electrically conductive contact points is to ensure ,

It is the object and the purpose of the invention to specify a luminaire, in particular a cable suspension luminaire, which fulfills as many of the stated tasks as possible, wherein the selection of the particularly urgent tasks in individual cases should not be restricted, in short, the flexibility should be ensured.

According to the invention, this object is achieved in a luminaire having the features specified in the characterizing part of claim 1. In other words, the luminaire is characterized by having a housing and a carrier made of plastic. This support is at least in one area provided with holes, recesses and depressions plate, and has on at least one side of the plate and preferably integrally formed with her, projecting from her ribs and / or fins.

Thus, it is achieved that a distance is created by the ribs and / or fins between the plate on which the driver unit, which is also a source of heat, and the bulbs which are mounted on the fins / ribs, on the one hand the ventilation by convection and thus the heat dissipation significantly improved and on the other hand enough distance for the surge protection, which depends so much on this distance, is created without special measures must be taken or additional components are needed.

The terms "fins" and "ribs" in the application and the claims designate planar parts or regions which, depending on their outline, are more like a fin (flat) or rather a rib (linear) with a sliding transition, and therefore , and in the sense of their matching task - distance to the plate - also be used synonymously.

Furthermore, mounting options for other components of a luminaire are also provided on the support, for holders for the cables, for a plug, for connecting elements to adjacent supports, whereby a modular construction is created, and the like. The shape of the plate is usually rectangular, possibly with rounded corners, to adapt to the shape of the lamp as a whole, but just because of this may be round or hexagonal, the latter facilitates because of the possible surface closure again a use in modular form.

By this carrier, including ribs / fins, which are directed in the assembled state as directed down, it is achieved that the LED plate or the respective bulb having part, with his / her metallic heat dissipation plate on the side facing the wearer almost only selectively (in the technical, not in the mathematical sense) rests on the appropriate corners or notches of the ribs / fins and so the problem of heat dissipation is solved by the large free surface and unobstructed convection.

On the fins / fins side facing away from the plate of the carrier, the other components, in particular the electrical conductors and the electronics of the lamp, in particular the LED driver unit or its equivalent, mounted.

Low weight, UV resistance and frost resistance, good electrical insulation properties, low production costs and modular design are also achievable with suitable selection of the plastic by these features.

The electrical insulation, which is important because of the problem of grounding in wire suspension lights, and is always desirable in other lights, is the height of the ribs or fins, facing away from the distance between the electrical conductors and components on the LED plate Side of the carrier and the LEDs is much larger than in the prior art (air creepage distance) achieved. The mounting screws are screwed almost over their entire length in thickening or crossing areas of the ribs / fins and thus excellent electrically isolated, which further reduces the risk of rollover or breakdown.

The LED driver unit can be mounted directly on the LED plate side facing away from the carrier. The assembly takes place "lying", that is, that these cuboid LED driver unit is mounted so that its side with the shortest length is normal to the plane of the plate of the wearer. In one embodiment, projecting low projections, preferably in the form of ribs or fins may be provided by the plate in this direction, on which the LED driver unit is mounted, whereby this heat source is practically everywhere well ventilated and cooled. This applies mutatis mutandis here and in every explanation of the LEDs or the LED driver unit for other light sources and their driver units.

Since the LED driver unit can be placed centrally on the carrier, one achieves a mass balance without additional balance weights, which saves costs and facilitates assembly.

For larger lights, two or more identical carriers are provided with mating longitudinal sides at least close to each other, and the common LED driver unit is horizontally or horizontally mounted across two or three carriers when using two carriers, thereby providing the desired central Center of gravity is again achieved without additional measures, it may be possible to dispense with the provision of fasteners of the carrier with each other under certain circumstances.

• Isolierende Montage der Lichtquelle mit einer Metall-Kern Leiterplatte gegenüber dem Träger unter Einhaltung der notwendigen Luftkriechstrecke durch die aus Kunststoffmaterial bestehenden Rippen/Flossen zu den metallischen Teilen zum Schutz der Überspannung von ≥ 10kV.
• Der Kunststoff kann UV-beständig, frostsicher und langlebig gewählt werden, was in Kenntnis der Erfindung und des jeweiligen Anwendungsgebietes kein Problem darstellt.
• Der LED Treiber wird direkt auf den Träger montiert, es sind keine (leicht verlierbaren) Montageteile notwendig.
• Die Wärmeableitung der elektrischen Komponenten (LED Treibereinheit und der LED Lichtquelle) ist zufolge der freien Umgebung ausreichend vorhanden.
• Da der LED Treiber im Schwerpunkt montiert werden kann, entfallen die üblichen Ausgleichsgewichte zur Justierung des Schwerpunktes der Seilhängeleuchte.
• Die Reduzierung der Komponentenvielfalt ist durch Beschränkung auf nur eine Ausführung des Trägers für alle Leuchten Typen mit unterschiedlichen LED Treiber Größen und unterschiedliche Anzahl der Lichtquellen durch deren Kombinierbarkeit gegeben.
• Es ist die Möglichkeit der Anbringung eines zusätzlichen Kühlbleches der LED Treibereinheit vorhanden, wenn dies in speziellen Umgebungen (Tropen, Fabrikshallen, etc.) notwendig ist.
• Für die Überwachung der LED Modul Temperatur ist es leicht möglich, einen Temperatursensor am Träger zu integrieren.
• Diverse Steck- und Kontaktverbindungen sind im Träger leicht zu integrieren.
• Kabelführungen und Kabelzugentlastungen können am Träger integriert werden.
• Aufgrund der guten Platzverhältnisse können zur Einhaltung der Schutzisolierung der Schutzklasse II alle frei zugänglichen elektrischen Kontakte problemlos mit Berührschutz ausgeführt werden.

The requirements mentioned above can thus be fulfilled according to the invention by one or more of the specified additional features:

• Insulating assembly of the light source with a metal-core circuit board relative to the carrier while maintaining the necessary Luftkriechstrecke by the existing plastic material ribs / fins to the metallic parts to protect the surge of ≥ 10kV.
• The plastic can be selected UV-resistant, frost-proof and durable, which is in the knowledge of the invention and the respective application no problem.
• The LED driver is mounted directly on the carrier, there are no (easily lost) mounting parts necessary.
• The heat dissipation of the electrical components (LED driver unit and the LED light source) is sufficiently present due to the free environment.
• Since the LED driver can be mounted in the center of gravity, the usual balance weights for adjusting the center of gravity of the cable suspension lamp are eliminated.
• The reduction of the component variety is given by limitation to only one version of the carrier for all luminaire types with different LED driver sizes and different number of light sources due to their combinability.
• There is the possibility of attaching an additional cooling plate of the LED driver unit if this is necessary in special environments (tropics, factory halls, etc.).
• For monitoring the LED module temperature, it is easily possible to integrate a temperature sensor on the carrier.
• Various plug and contact connections are easy to integrate in the carrier.
• Cable guides and cable strain reliefs can be integrated on the carrier.
• Due to the good space conditions, all freely accessible electrical contacts can be easily executed with protection against contact to maintain the protective insulation of protection class II.

• die Fig. 1 einen erfindungsgemäßen Träger von der Oberseite,
• die Fig. 2 den gleichen Träger von der Unterseite,
• die Figs. 3 und 4 einen anderen Träger in Ansichten entsprechend denen der Figs. 1 und 2,
• die Figs. 5 eine Draufsicht auf eine fertig montierte Leuchte ohne Leitungen und andere Details,
• die Fig. 6 den Schnitt VI-VI der Fig. 5,
• die Fig. 7 das Detail VII der Fig. 6 in stark vergrößertem Maßstab und
• die Figs. 8 bis 12 Prinzipdarstellungen der montierten Leuchten.

The invention will be explained in more detail below with reference to the drawing. It shows or show

• the Fig. 1 a carrier according to the invention from the top,
• the Fig. 2 the same carrier from the bottom,
• the Figs. 3 and 4 another carrier in views corresponding to those of Figs. 1 and 2 .
• the Figs. 5 a top view of a fully assembled luminaire without wires and other details,
• the Fig. 6 the section VI-VI of Fig. 5 .
• the Fig. 7 the detail VII of the Fig. 6 in greatly enlarged scale and
• the Figs. 8 to 12 Schematic representations of the mounted luminaires.

The Fig. 1 shows a carrier 1 formed according to the invention, synonymous also called support member, in perspective view, from the top when used as a street lamp seen side. In the exemplary embodiment shown, the carrier 1 consists essentially of a multiply perforated plate 2, which on its underside, which in Fig. 2 can be clearly seen, a series of ribs or fins 3 has formed. These ribs / fins 3 bridge openings 4 in the plate 2, wherein in the region of the respective openings 4, the ribs / fins end with their edge facing the plate 2 at a considerable distance from the plate 2. This is especially the contour 5 of the rib / fin in Fig. 1 good to see.

The term rib / fin is used because no uniform sharp definition of the individual terms could be found and because it is to be expressed that they are projections whose wall thickness compared to their other extent is large. While here rib is essentially a part that extends only in one dimension, it is intended to indicate with the fin that it is quite possible to select and use planar structures here.

As shown in particular by the contour 5, variously there is a transition from a rather flat, thus flooded region to a predominantly linear, thus ribbed region. In principle, however, all such components should be included. It is easy to see from the above that breakthroughs in the fins / fins can be provided, as long as they only fulfill their task, a ventilated distance between the plate and resting on the end faces of the ribs / fins board (or plate, or what always) with the bulbs to create.

Due to their different orientation, these ribs / fins form penetrations in which these intersections are thickened, for example in the sleeve-like thickening 6. As a result of the penetration of the two adjoining ribs (fins, this region is mechanically stable, even if at a distance of The plate 2 and, moreover, ends in the region of one of its openings 4. These thickenings 6 form mounting points for the (not shown) LED plate, with the additional advantage that excellent plastic insulation and overvoltage protection are provided by the plastic formation of the fin fins.

The ribs / fins are preferably made in one piece with the plate 2, for example by injection molding, but it is also possible to produce them as a kind of lattice work separately from the plate 2 and to be glued or screwed with this.

The large openings 4 on the plate 2 are used to create convection and thus the removal of heat but also, as already mentioned, the creation of a sufficiently large air creepage distance as protection against overvoltages. In addition to the openings 4, in the illustrated embodiment, the plate 2 on recesses 7, which can serve, for example, thermal sensors or other sensors easily and without additional mounting hardware on the support 1.

Out Fig. 1 a on the top of the plate 2 upstanding socket 8 is shown, which has a contour which corresponds to the outer contour of a conventional plug, so that the plug can be easily plugged and possibly fixed with a screw or adhesive.

In addition, numerous small holes 9 of different size and shape are still provided on the plate 2, which, unlike the openings 4 do not serve (primarily) the thermal convection, but for the assembly of cable strands and the like. Individual ones of these openings may also be used to mount the LED driver (not shown) to be mounted on top of the panel 2. There are embodiments of such a plate 2 conceivable, which are specifically intended for environments with usual high outside temperature (tropics, machine shops, etc.) in which on this top of the plate 2 also ribs / fins can be provided to without further problems the LED driver at a distance from the plate 2 and thus practically exposed on all sides and only selectively attached to be able to attach.

Figura 3 and 4 show a variant in which only the basic features are present, in views similar to those of Fig. 1 and 2 : From one (horizontal) Plate 2 protrude ribs / fins 3 down (in use position), some holes 9 or thickenings 5 with holes for screwing in fastening screws are also provided in the Figs. 1 and 2 missing further elements are missing. Nevertheless, the essential objective of the invention, the thermal control of the luminaire and the almost equally important objective of the invention, the extended air creepage distance, are fully achieved.

The Fig. 5 shows a plan view of a support 2 with ballast 10 (LED driver or analog electronics) and a lamp to be assigned holding plate 11, which is purely schematic without any support, etc. indicated.

The Fig. 6 , a section along the plane VI-VI of Fig. 5 shows, mounted on the underside of the carrier, LEDs 13 having LED plate 12 (board), which is fastened with screws 14 in the thickenings 6 of the carrier 1. The arrangement of the ballast 10 in the geometrically central region can be clearly seen, the location of the total center of gravity is clearly low. Contrary to custom, the rib / fin 3 is hatched despite its small extension normal to the representation plane.

The Fig. 7 represents the detail VII of the Fig. 6 on an enlarged scale, good to see the placement of the screw 14 in the cylinder-like thickening, here are the ribs / fins hatched. The contour 5, by which the convection is ensured in conjunction with the openings 4, can be seen particularly well here. Also, the prior art construction of the LED panel is well visible (from top to bottom in operating position, down shining): The support plate 11 in the form of an aluminum mounting plate, an electrical insulating film 15 and the actual lens plate 16, fitting together glued as a unit to assemble by means of screws 14. The outline of the aluminum mounting plate keeps distance from the thickening 6, whereby the inventively extended air creepage distance is easily reached or further extended.

From the Figs. 8 to 12 are various inventively constructed lights, purely schematically, as a whole, shown in a kind of section: The Figura show lights with two carriers 1, only the Fig. 11 shows a cable suspension lamp with three carriers according to the invention 1. The carriers are held in each case by the ballasts 10 fitting in position. This show: the Fig. 8 a pole light, Fig. 9 a luminaire with wall mounting, 10 and 11 a suspension lamp, Fig. 12 a light with a central mast, each with its housing 16. Details such as cables, mounting brackets, brackets, etc. are, as known in the art and familiar to those skilled, not shown and can be used ad libidum.

The invention is not limited to the illustrated and described embodiments, but can be varied in many ways. Thus, the individual embodiments described can be combined with one another in any desired manner, in many cases the plate 2 will not only form a section of the carrier 1 but be identical to it, as can be seen from FIGS. 1 a, the fins can be arranged differently and differently be formed, in particular the side of the plate on which the ballast is mounted, can be designed differently. In addition, numerous fasteners can be provided for different uses, of which only one part is used, whereby but the usability and thus the lot size is significantly increased.

The materials which can be used for the carrier are readily available to the person skilled in the art, in accordance with the invention and the respective field of application, in which way the carrier is produced, ultimately depending on the machines present and in part on the plastic chosen, in most cases an injection molding process is suitable. LIST OF REFERENCE NUMBERS 01 carrier 09 hole 02 plate 10 ballast 03 Fin rib / 11 retaining plate 04 opening 12 LED board 05 contour 13 LED (s) 06 thickening 14 Screw (s) 07 deepening 15 insulation 08 base 16 casing

Claims (3)

Luminaire, in particular for street lighting and in particular cable suspension luminaire, at least with a housing (16), with a module with light-emitting elements, such as LED plate (12), and with a ballast (10) for the light-emitting elements, characterized in that a support (1) consisting of plastic is provided for the individual components, which comprises or consists of a plate (2) provided with holes (4), preferably also recesses and depressions (7) at least in one area, and that at least one side of the plate (2) and preferably integrally formed with her, protruding therefrom ribs and / or fins (3) are provided, to which the lighting means are attached. Luminaire according to claim 1, characterized in that the carrier (1) is provided at least in the region of its plate (2) with a socket for receiving a switch and / or holes for fixing cable holders, sensors, and the like. Luminaire according to claim 1 or 2, characterized in that the ribs and / or fins (3) in areas in which they bridge openings (4) with their the plate (2) facing edge with its contour (5) at a distance of the plate (2) end.

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