EP3583353B1 - High performance led floodlight and floodlight system using the same for illumination of sport halls - Google Patents

Description

The present application relates to high-performance LED floodlight luminaires and floodlight systems using them according to the preamble of claim 1.

For the continuous implementation of sporting competitions as well as training in the evening hours and in the winter months with little light, it is necessary to provide sports grounds with appropriate lighting systems, which are usually referred to as floodlight systems. Technical lighting requirements for such systems can be found in the industrial standard DIN EN 12193 "Light and lighting, sports facility lighting". It is relevant here that there are very different requirements for these sports lighting systems, depending on the respective use and the level of competition based on them, for example.

A distinction is therefore made between different lighting classes depending on the requirements in lighting class I for high-performance training (international and national competitions), lighting class II for competitions at medium level (regional and local competitions as well as training) and lighting class III for general training and recreational sports. In terms of numbers, lighting class III in particular is the most frequently implemented, since it involves lighting systems that are very widespread in a large number of regional sports facilities. In terms of numbers, this is a multiple of the sports field lighting systems that are created and operated at the highest level of requirements, for example for stadiums of the German football league.

In particular, the evaluation of sporting events by means of television broadcasts has completely different requirements on sports facility lighting than is required by everyday operation in relation to safe training operations or smaller regional competitions, which generally do not require media broadcasts.

These different requirements are expressed directly in the requirements required for the sports field lighting systems. These requirements are also the subject of the licensing procedures of football associations, for example the German Football Association (DFB), which specifies minimum light levels for floodlight systems.

The German Football League (DFL) also stipulates license requirements for floodlight systems for stadiums in the 1st and 2nd Bundesliga. A minimum illuminance is defined here at a height of 1.5 m above the playing field. The corresponding requirements for the required minimum illuminance levels have changed in recent years towards stronger illuminance levels, as the increasing demands on imaging media transmissions, for example with regard to slow-motion reproductions, require high light levels. Lighting requirements for HDTV, for example, require a minimum illuminance of 2000 lux. Further specifications are made, for example, by the European Football Association (UEFA) and the World Football Association (FIFA). There are specific requirements with regard to the minimum illuminance of competitions in connection with UEFA, such as the Champions League or the European Cup.

The uniform illumination of such a football field, for example, which is not arranged in a stadium, is significantly more difficult, since the rule here is that on both long sides of the playing field at equal intervals For example, 3 floodlight masts are distributed, which, however, are not arranged in the corner of the playing field, but are often offset from the corners about 17 meters to the center, that is, there is a distance between the side mast of about 17 Meters to the corner flag. The 3rd side mast is then exactly in the middle of the field. This results in particular in the central problem that it is very difficult to illuminate the entire field uniformly in this way, since the corners of the playing field in particular are difficult to reach with lights.

The standardization today is that 8 lamps are attached to these, for example 6 floodlight masts. This means in each corner, or 17 meters from each corner, a floodlight on a floodlight mast and 2 floodlights on each of the middle floodlight masts. In this way, 4 strong lights shine from each side of the soccer field onto the field to illuminate it. In many cases the corners are only sparsely lit here.

Against this background, it is of paramount importance for the operators of sports venues which operating costs are caused by the mandatory floodlight systems. The primary aim here is to reduce the power consumption with the highest possible output, with a long service life for the lamps and low maintenance intensity being sought.

Against this background and in the course of the general development in the field of lighting, a clear tendency towards the use of LED lighting can also be seen in the field of sports field lighting systems, although clear limits have been set here with regard to the required illuminance. In addition, it has so far been critical that the required high luminous intensities through the LED technology are not achieved with significantly lower power consumption which made a switch to LED lighting economically unattractive.

Solutions based on LED lighting technology that have been offered up to now have, in addition to the above-mentioned deficiencies, a deficiency with regard to the full-area and uniform illumination of the sports field. In the case of an arrangement, for example on 6 laterally arranged floodlight masts, the large-area arrangement of a large number of LED lamps in these floodlight lamps causes a very wide radiation with high power losses, which is why these solutions are currently not economical because the desired savings in electricity costs are not achieved.

From the publication US 2012/307486 A1 For example, a lighting device is known which comprises a plurality of modular devices, each modular device comprising one or more light sources and one or more light directing or light deflecting devices. Methods for adjusting one or more components of the luminaire around one, two or three axes are presented, whereby the lighting needs of a target area, even with a complex shape, can be addressed in such a way that the target area is adequately illuminated with increased glare control and increased light uniformity can compare to at least most conventional headlights for sports lighting applications.

From the revelation US 2015/0308655 A1 an arrangement of LED lights for the outdoor area is disclosed, which is aimed in particular at being able to illuminate event locations. In addition to the actual structure of the luminaire, an arrangement on a support frame is also disclosed, with a plurality of individual lamp bodies being to be arranged on a support frame. It is also disclosed here that these lights start from a central beam axis in the edge area are arranged at an angle, whereby a large-area illumination of a sports facility, for example, can be possible.

Basically, however, a large number of identical lamp bodies are mounted on the support frame, in the exemplary illustration in FIG Figure 1 For example, there are 24 lights that are arranged on a frame-like carrier. The framework carrying these lights is statically designed in a construction plane and the lights are aligned using a pivotable bracket on the rear of the lamp. It is noticeable that it is primarily aimed at achieving a high light output through the mass of luminaires. This is a very energy-intensive system, as the large number of lights consumes corresponding watts.

From the publication DE 10 2011 113 652 A1 a high-performance LED spot is disclosed that is basically open to many applications. The disclosure relates exclusively to the basic construction of this LED spot, with an application in the field of floodlight systems not being suggested here.

Finally it's off publication US 2006/0245189 A1 discloses a floodlight arrangement which discloses an arrangement of spotlights on floodlight masts. The inventive disclosure concept in this document is a special method for aligning these lighting means in a specific shape. The background here is that a large number of concentrated LED beams are to be recorded in this way in order to align them optimally, whereby the number of spotlights that are required to achieve a defined lighting task is to be minimized. In this respect, the method disclosed here, integrated in computer-controlled calculation models, is intended to improve and support this project planning by measuring at certain target points. A specific structural design of a floodlight system that can advantageously ensure that a sports facility is illuminated, for example, is therefore not the aim of the disclosure here.

It is therefore the object of the present invention to create an improved floodlight system based on LED lighting means that enables the advantages of LED technology with regard to longer and lower service lives of the lighting means, but in particular also an improvement with regard to the Caused uniformity in the illumination of a sports field.

This is achieved by high-performance LED floodlights according to the characterizing features of claim 1.

Advantageous designs of the high-power LED floodlights according to the invention are described in subclaims 2 to 7. Claims 8 and 9 relate to a floodlight system for lighting sports fields using the high-performance LED floodlights according to the invention.

The fundamental improvement approach compared to the floodlight systems used in the prior art in the area of lighting smaller sports grounds arises from the fact that the concept according to the invention tries to compensate for the considerable disadvantage that an arrangement of floodlighting on only a few floodlight masts with a low height close to the edge of a playing field or of a sports field.

The background to this is that in the small sports facilities, for example in the area of club football, which is not played in modern stadiums, there are lower requirements for the light quality in the sports field lighting, which, however, in practice leads to the fact that the lighting is often poor on the even Illumination of the entire place. As a rule, this is due to the arrangement of the spotlights on the floodlight masts, with four lamps being arranged on each of the three lateral masts in the prior art, one each at the respective corners of the lighting masts and two on a crossbar on the Lateral floodlight pole arranged at the level of the center line. This results in a total of eight floodlights, which are aligned on the playing field in such a way that it is radiated over the entire surface.

The inventive concept now goes beyond this state of the art, but at the same time uses the existing structural specifications with regard to the floodlight masts. This means that an attempt is made to illuminate the sports field more evenly and completely, despite the limited possibilities that are given by the six relatively low floodlight masts surrounding the sports field.

For this reason, LED floodlights are arranged on the existing or similarly newly erected floodlight masts, which are not designed as a single high-intensity spotlight in the sense of the state of the art, but rather the LED spotlights that illuminate the sports field with articulated LED spotlights exist, which are additionally directed in particular into the corners and to the outer lines of the playing field in order to be able to achieve a required light intensity in the areas that are only weakly illuminated in the prior art. A corresponding exemplary diagram of the illumination will be explained in more detail later with a view to the graphic representation.

Here, the inventive concept of the floodlight system provides that the novel floodlight comprises LED spotlights that can be aligned in different ways and can be arranged at the usual attachment points on the floodlight mast via a common support structure carrying the individual LED lights. What is essential here is that the LED spotlights involved have a single high-performance LED chip as a light source and not a large number of individual LEDs arranged flatly next to one another, as is the case in the prior art, for example US 2015/0308655 A1 is revealed. These flat individual LED arrangements used in the prior art also require plastic lenses or lens arrays arranged in the manner of a mat, which are assigned to the respective individual LED, or as in the case of the US 2015/0308655 A1 of Fresnel lenses. In a negative way, this leads to color shifts in the edge area into greenish tones, which have a negative effect on the emitted light.

The use of only one LED chip in each of the LED emitters, in combination with reflector optics, which is also relevant to the invention, results in a higher light yield and quality as well as the ability to align the light emission, which is a central element of the invention. The negative effect of the color shift is also eliminated, since no plastic lenses in front are required, since this task of concentrating or scattering light is achieved by a reflector each surrounding the LED chip.

An additional positive advantage of this solution is that the individual LED spotlights forming the floodlight can be built very compactly. The LED chips are in a stable housing with a reflector optic in front of them and a front pane that closes the spotlight and sits on the reflector, both in terms of mechanical damage, as well as in terms of soiling and the effects of the weather, are significantly better protected than in known floodlights with LED lights. Illuminants is the case. This in turn results in a longer service life of the LED chips as lighting means and thus a further improvement in the economic efficiency of these floodlights in relation to previous solutions as well as alternative LED floodlights.

The combination of LED chip and reflector optics has another key advantage that is particularly relevant in the field of floodlights. Since the floodlight lighting should enable the sports field to be used by active athletes as well as the view of the audience at the edge of the sports field or on grandstands, it is a central concern to minimize the glare from the floodlights for both groups. Here, too, the previously widespread flat arrangements of a multitude of LEDs with pre-attached plastic lenses are very disadvantageous, since those involved are greatly dazzled when they look at the floodlights, as they look directly at the LED lamps.

The arrangement according to the invention has the effect that the extremely bright LED chips are set back in the LED spotlight, and the reflector optics that are placed in front thus reduce the direct view of the LED illuminant. Targeted scattering or bundling, depending on the alignment of the LED spotlight, is consciously achieved through the choice of suitable reflector optics, whereby the glare of active people and spectators can be significantly reduced.

The solution according to the invention is now structured in such a way that each LED floodlight comprises 4 LED spotlights, which are formed as described at least from a housing), a heat sink, reflector optics and a high-performance LED chip, the LED spotlights on in pairs a support frame are arranged with articulated connections. In this way, an upper pair of LED spotlights is formed, which is seated in parallel on a common carrier element and is provided with reflector optics that produce a narrow beam angle, so that the light emission from this pair of LED spotlights is aligned in the same direction and thus covers longer distances. to reach the middle area of the sports field. The arrangement above the second, lower pair of LED spotlights was deliberately chosen, as the lower pair should cover areas near the floodlight mast and could not radiate freely with an arrangement above.

A lower pair of LED spotlights, in contrast to the upper pair, which is statically aligned in parallel, is now placed on a separately alignable support element and is provided with reflector optics that cause a wide beam angle, so that the light emission of this pair of LED spotlights can be aligned separately from one another for targeted illumination the areas of the sports field near the edge that are closer to the floodlight mast. On the other hand, the wider radiation angle means that these areas near the mast can be broadcast over the comparatively short distance.

In an advantageous design, the upper LED spotlight pair has a narrow beam angle between about 7 ° and 25 ° for the long distance due to the housing with reflector optics and the LED spotlights forming the lower LED spotlight pair have a wide beam angle for the short distance between about 40 ° and 60 °. In this way, the mentioned illumination is possible in a targeted manner.

These aspects of the varying radiation optics within a high-performance LED floodlight luminaire according to the invention are very central in order to be able to implement the desired beneficial effects and represent a solution that is not available in the state of the art, since here, as a rule, either individual very bright ones Spotlights are used that still cannot achieve uniform field coverage in the event of large light losses, or a large number of individual lights are used which, however, only add up in the area should. The targeted integration of different spotlights with precise alignment within a high-performance LED floodlight is neither realized nor suggested.

In an advantageous design, a cross member is arranged on an approximately U-shaped base beam that is to be attached to the floodlight mast, which carries a paired arrangement of two LED spotlights, which can only be changed about a pivot axis in their beam angle on the sports field. Underneath this arrangement there is at least one more articulated bracket that carries, for example, two additional LED spotlights that can be pivoted independently of one another and independently of the paired LED spotlights in two joint planes, which is why they are aligned to any point on the sports field can.

With the arrangement of the U-shaped support on a floodlight mast, this means that on the one hand the two individually adjustable LED spotlights can be directed towards the ceiling of the playing field and an outer line of the sports field, and at the same time the spotlights, which are arranged in pairs, act as basic lighting centrally on the Playing field can be directed. In practice, with the arrangement of, for example, 16 of these floodlights on the six side floodlight masts surrounding the sports field, this leads to 64 individual LED emissions from the 64 LED spotlights. With an alignment of 2 LED spotlights and 2 further freely adjustable LED spotlights in pairs according to this design, 3 possible different beam angles result for each of the built-in LED floodlights, whereby 48 different light emissions can be emitted from the 16 floodlights onto the sports field, see above that the sports field is fully and evenly lit.

A special conceptual alignment of the Lights are provided in order to be able to optimize the uniform distribution on the sports field through an advantageous overlap of the light fields formed from the individual emissions. An alternative design of the floodlight system provides that special support frame arrangements of the floodlight luminaires are pre-conceptualized in such a way that the exact alignment to the sports field is achieved without later alignment of the individual luminaires on the support frame. This is specified by the parameters of the exact arrangement of the floodlight masts on the side edges of the sports field, the height of the arrangement of the floodlight lamps on the corresponding floodlight masts and the general limitation or size of the sports field itself.

Since these parameters are often standardized in existing sports field facilities, but can be provided in a pre-conception coordinated with the floodlight system in particular for newly created sports fields, the invention provides for the special angles of the individual LED spotlights of the floodlight lamps to be pre-conceptualized so that the floodlight lamps, can be attached to the defined points of the floodlight masts with the differently aligned LED spotlights without further adjustment.

This results in a floodlight system according to the invention, in which specially assembled floodlights are arranged on the respective floodlight masts, the individual LED spotlights of which are each designed only for the special mast and attachment point to which they are to be attached. In this way, this floodlight system results in several different, preconceived support frames for these floodlights. This will also result in pairs of identically designed carrier frames, for example in the case of the floodlight masts arranged opposite one another at approximately the level of the center line of the sports field or also in the case of the diagonally opposite masts arranged approximately at the corners of the playing field, in which the same support frame configurations can be used.

An essential advantage and therefore also a mandatory aspect for the economic use of LED lighting on sports fields is that the floodlight system according to the invention eliminates the loss of light radiation that is usual in the prior art, which either illuminates areas of the sports field that are already sufficiently illuminated or that are over radiate out the outer edges of the sports field to be illuminated, minimized. It also plays a role here that it is provided according to the invention that the different LED spotlights that work together in a floodlight can also be made up differently in terms of both their light output and their optics. According to the invention, therefore, different reflectors are used in the LED spotlights that are commonly used in a floodlight.

In this way, for example, an LED spotlight that radiates comparatively steeply downward into a corner of the sports field on the corner mast of the floodlight system has a different light intensity and diffusion properties than an LED spotlight used in the same floodlight that is centered on the field. In this way, it is also possible to optimize the lighting of the sports field and at the same time only use the power consumption through the combination of the individual LED spotlights in the floodlights, which is actually required to achieve the standardized light intensity on the playing field. This is a significant deviation and improvement compared to the wide-spread and therefore not differentiated emitting floodlight luminaires, which are currently also used in the field of LED floodlight planning.

Figur 1

eine Anordnung von Flutlichtleuchten an Flutlichtmasten, wie diese aktuell weite Verbreitung findet,

Figur 2

eine erfindungsgemäße Hochleistungs-LED-Flutlichtleuchte 1 in perspektivischer Frontansicht am Trägerrahmen,

Figur 3

eine erfindungsgemäße Hochleistungs-LED-Flutlichtleuchte 1 in perspektivischer Rückansicht am Trägerrahmen,

Figur 4

einen Tragerrahmen der erfindungsgemäßen Hochleistungs-LED-Flutlichtleuchte 1 ohne LED-Strahler in perspektivischer Rückansicht sowie

Figur 5

ein Abstrahlschema zur Ausleuchtung eines Sportfeldes bei 6 seitlichen Flutlichtmasten.

The invention will be explained in more detail below with reference to drawings. Show it

Figure 1

an arrangement of floodlights on floodlight masts, as is currently widespread,

Figure 2

a high-performance LED floodlight 1 according to the invention in a perspective front view on the support frame,

Figure 3

a high-performance LED floodlight 1 according to the invention in a perspective rear view on the support frame,

Figure 4

a support frame of the high-performance LED floodlight 1 according to the invention without LED spotlights in a perspective rear view and

Figure 5

a radiation pattern for the illumination of a sports field with 6 lateral floodlight masts.

Out Figure 1 it becomes clear how the vast majority of sports fields are currently equipped with floodlights. On the long edges of the sports field 3 floodlight masts 2 are set up, at the upper end of which the floodlights are mounted. With the traditional light sources, one such floodlight lamp is mounted on the masts at each corner and two in the middle.

The others Figures 2 to 4 relate to the high-performance LED floodlight 1 according to the invention and the support frame newly developed for this.

The Figures 2 and 3 also show the mounted LED spotlights, whereby in this design 4 LED spotlights are articulated on the carrier frame. These LED spotlights are formed from a rear heat sink 5, to which a housing 6 is connected, in which the LED chip (not shown) and the reflector optics are arranged in front of it. This structural unit is closed by a front panel 7, whereby the LED spotlight can be designed to be completely closed, but the heat dissipation from the LED chip is fully secured by the heat sink directly attached to the back.

According to the invention, these LED emitters are now mounted on carrier elements 4 and 4 ', with the carrier element 4 carrying two parallel LED emitters and the two further carrier elements 4' each carrying an LED emitter, with the carrier elements 4 'being pivotable independently of one another are trained. The carrier element 4 is in this case articulated to the side of the free ends of a U-shaped base body 3 of the carrier frame, and is held by screws 10 in the illustration. In this case, the first carrier element 4 and the LED spotlights arranged on it can accordingly be pivoted about a pivot axis towards the sports field. The second carrier elements 4 'are also guided on the first carrier element 4, but compared to its pivoting movement they can be further aligned about two further pivot axes.

This is achieved by a support arm 12 which is attached to the rear of the first support element or which forms a structural unit with it. On this support arm 12, support bodies 13 are pivotably articulated in the first articulated connection 11, in the design shown by means of bores in the free end of the support arm 12 and in the support bodies 13, which are connected to the first articulated connection 11 by means of a connecting screw.

In addition to this first pivot axis about the support arm 12, the two individual LED spotlights on the second support elements 13 have a further pivot axis on a second articulated connection 8 between the second carrier elements 4 'and the carrier body 13, which is offset by 90 ° in the illustrated design with respect to the first articulated connection 11. This ensures that these two individual LED spotlights have sufficient degrees of freedom to be able to direct them to any point on the sports field to be illuminated.

The carrier elements 4 and 4 ′ have holes at the rear in order to be able to cabling the LED emitters through the heat sinks 5.

In the Figures 2 and 3 it can also be seen that the LED spotlight housing 6 can be installed in different designs in a floodlight. For this, it becomes clear from the numbers 6 'and 6 "that the housing 6" is built significantly shorter. Thus, the reflector used is also built much flatter and thus has different radiation properties compared to the reflector that is built into the housing 6 '. In this way, by choosing different designs of LED spotlights in terms of reflectors, housings and LED chips, different light emissions can be realized in a floodlight, which are also aligned differently, which illustrates the great degree of variability of these floodlights.

This function is also used in the radiation pattern of Figure 5 clear. Here, based on the arrows extending from the floodlight masts A and B, it is shown schematically how the light emission of the floodlights 1 takes place. Here, shorter arrows 18 and longer arrows 17 are shown, which makes it clear that the radiation distances of the LED spotlights 14 built into a floodlight are set very differently here. The shorter arrows 18 move in a narrower radius around the respective mast A or B and here cause the playing field to radiate precisely in the problematic edge and corner areas of a playing field with conventional floodlight systems are often very weak and therefore often under-lit contrary to the actual standardization.

Figure 5 shows 2 opposing, centrally arranged floodlight masts A and 4 floodlight masts B arranged close to the corner. According to the invention, radiators 14 are arranged in parallel with 2 pairs of radiators 15 and have corresponding reflector housings, which enable radiation over a longer distance due to the mutual reinforcement and a narrower reflector optics. Since there are 2 such pairs 15 on a floodlight pole B in the corner of the square, there are also 2 long arrows 17 emanating from this pole B, which radiate into the center of the playing field and thus illuminate the central field area.

In addition, there are 4 differently aligned short arrows 18, which stand for the lower LED spotlight pairs 16 provided with a wide beam optics. With 2 floodlights 1 used on a floodlight mast B positioned in the corner, there are therefore a total of 4 individual light radiation arrows 18, which radiate in different directions in the corner of the field to be illuminated and thus also effectively radiate this area in the prescribed form.

Since the lighting of the playing field with the 6 lateral masts A and B can be viewed as a kind of reflection of a half field, the middle masts A are exactly doubled in relation to the corner masts BDh, on a central mast A there are 4 of these according to the invention Floodlights 1 arranged, which is why long arrows starting from a central mast A in the lighting scheme 4 17 and 8 short arrows 18 are present, which partially cover the middle field and partially the edge area of the playing field.

This lighting scheme illustrates the great strength of the floodlight lighting concept according to the invention, since the light emission can be achieved with a very manageable number of LED high-performance lights, since these are individualized both in terms of their radiation properties and their alignment on the playing field and thus What is achieved is that there are no redundancies in radiation in areas in which there is basically already sufficient light quality and, conversely, edge areas and areas that are just as important and should be treated the same, such as the center of the field, are not neglected.

Claims (9)

1. High-power LED floodlight lamps (1) for arrangement on floodlight towers (2) on the lateral sides of a sports field for its illumination,

   - wherein each LED floodlight lamp (1) comprises 4 LED emitters (14), which are formed at least from a housing (6), a cooling element (5), a reflector lens and a high-power LED chip,

   - wherein the LED emitters (14) are arranged in pairs on a carrier frame having joint connections,

   - wherein an upper LED emitter pair (15) sits on a common carrier element (4), aligned in parallel, and is provided with a reflector lens which effects a narrow emission angle, whereby the light emission of this LED emitter pair (15) is amplified in an equally aligned manner and thus overcomes further sections in order to reach the center region of the sports field,

   - while a lower LED emitter pair (16) sits respectively on a separately alignable carrier element (4') and is provided with reflector lenses which effect a wide emission angle, whereby the light emission of this LED emitter pair (16) is alignable separately from each other for targeted illumination of the regions near to the edge of the sports field located closer to the floodlight tower.
2. High-power LED floodlight lamps according to Claim 1,
   characterized in that
   the LED emitters (14) forming the high-power LED floodlight lamp (1) have different powers and/or housing designs and/or reflectors and/or LED chips.
3. High-power LED floodlight lamps according to Claim 1 or 2,
   characterized in that
   the LED emitters (14) forming a high-power LED floodlight lamp (1) are controllable individually and/or in pairs in regard to their power as well as the output LED light color by control electronics associated with the respective LED emitter.
4. High-power LED floodlight lamps according to one of the preceding claims,
   characterized in that
   the carrier frame comprises a roughly U-shaped base body (3), wherein roughly at the two free ends of the roughly U-shaped base body (3) the LED emitters (14) are arranged in a swivel-mountable manner on the individual and common carrier elements (4, 4').
5. High-power LED floodlight lamps (1) according to one of the preceding claims,
   characterized in that
   the two LED emitters (14) forming the upper LED emitter pair (15) are arranged on a first common carrier element (4) which is hinged to the U-shaped base body (3) and on which a carrier arm (12) or carrier extension is arranged, on which two further carrier elements (4') are pivotably arranged, to which the LED emitters (14) forming the lower LED emitter pair (16) are likewise pivotably attached, so that the alignment of these lower LED emitters (14) occurs in two swivel axes.
6. High-power LED floodlight lamps according to Claim 5,
   characterized in that
   at least two carrier bodies (13) are arranged about a common swivel axis pivotable on the carrier arm (12), wherein the LED emitters (14) are attached to second carrier elements (4'), which are pivotably attached to these carrier bodies (13) about a second swivel axis offset by around 90° from the first swivel axis.
7. High-power LED floodlight lamps according to one of the preceding claims,
   characterized in that
   the upper LED emitter pair (15) thanks to the housings used having reflector lens has a narrow emission angle between around 7° and 25° for the long distance and the LED emitters (14) forming the lower LED emitter pair (16) have a wide emission angle for the short distance between around 40° and 60°.
8. Floodlight system for the illumination of sports fields, comprising high-power LED floodlight lamps (1) according to the preceding claims,
   characterized in that

   - the floodlight system is arranged on at least 4 floodlight towers surrounding the sports field, wherein these 4 floodlight towers are distributed uniformly at the corners and/or long edges of the sports field,

   - wherein at least 16 LED floodlight lamps (1) each with at least 4 integrated LED emitters (14) are arranged on crossbeams on the floodlight towers.
9. Floodlight system for the illumination of sports fields, comprising high-power LED floodlight lamps according to the preceding Claim 8,
   characterized in that

   - the floodlight system is arranged on at least 6 floodlight towers (2) surrounding the sports field, wherein these 6 floodlight towers (2) are distributed uniformly at the long edges of the sports field,

   - wherein on the 4 floodlight towers (2) associated with the corners of the sports field there are respectively arranged 2 LED floodlight lamps (1) each with at least 4 integrated LED emitters (14) and

   - on the 2 floodlight towers (2) arranged centrally at roughly the height of the center line of the sports field on both sides there are respectively arranged 4 LED floodlight lamps (1) on crossbeams.

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