EP2593712A2

EP2593712A2 - Navigational light, in particular for a wind wheel

Info

Publication number: EP2593712A2
Application number: EP11817261.8A
Authority: EP
Inventors: Lars Hohaus; Vincent Kessler
Original assignee: Quantec Networks GmbH
Current assignee: Quantec Networks GmbH
Priority date: 2010-07-16
Filing date: 2011-07-06
Publication date: 2013-05-22
Also published as: US20130279162A1; DE102010027529A1; WO2012025078A3; WO2012025078A2

Abstract

The invention relates to a navigational light (1), in particular for a wind wheel, wherein the navigational light (1) at least comprises: a support structure (2) having a plurality of LED units (10, 12) arranged in the circumferential direction and directed outward, and a linear lens (7) arranged radially outside of the LED units (10, 12) and extending in the circumferential direction for bundling the light emitted by the plurality of LED units (10, 12), wherein the linear lens (7) is intended for the plurality of LED units (10, 12) in common. According to the invention, two or more different LED units (10, 12) are attached to the support structure (2) in alternation in the circumferential direction, wherein first LED units (10) and second LED units (12) have different spectral compositions of the emitted light of said LED units, wherein the first LED units (10) and the second LED units (12) can be controlled separately from each other.

Description

Beacon, especially for a windmill

The invention relates to a beacon which can be used as obstruction lighting, in particular on a windmill or, for example, on a windmill. a tall rack or tall building can be attached. Such a beacon can thus emit light as a warning to flying objects.

The types of fire emitted by beacons are governed by different national or international standards, such as: B. the ICAO Annex 14 set. Here are fire with different color values, eg. As white or red, set different flashing frequencies and intensity distributions. The intensity distributions can furthermore be defined by lower and upper limit values in the horizontal plane and for different vertical deviation angles with respect to the horizontal plane, in order to ensure sufficient intensities for obstacle detection and, secondly, excessive glare of e.g. B. surrounding buildings or people in a vicinity to avoid. DE 10 2007 009 896 B4 describes a beacon with a plurality of arranged on a circle and radially outwardly directed LEDs (LEDs). The plurality of LEDs is associated with a common Fresnel lens which is circumferentially provided circumferentially and concentric with the LED array. Ancillary lenses are arranged in front of the individual LEDs in order to direct the light from the LEDs to the Fresnel lens so that the LEDs assume a radially inwardly offset virtual image with respect to the Fresnel lens, which is also opposite the focus of the Fresnel lens. Lens is offset. The DE 20219037 U1 describes a beacon with multiple LEDs.

CONFIRMATION COPY The use of LEDs can be compared to previous bulbs, such as halogen lights, a significant Stromerspam is achieved.

By using the front lenses of DE 10 2007 009 896 B4, the optical properties of the LEDs can be modified accordingly.

However, it is sometimes problematic to achieve the various required radiation characteristics. Thus, such beacons are generally only suitable for specific types of fire. DE 202007 005 003 U1 describes a beacon in which a plurality of light sources are arranged in different Lichtabstrahebenen, wherein the different levels are formed by LEDs of different colors. The several Lichtabstrahebenen each own lens elements are assigned, whose transitions are separated by aperture rings.

Such beacons are common practice for the formation of different fire types. Depending on the required beacon, e.g. Depending on the time of day, the different light emission levels are switched on and the respective non-relevant light emission levels are switched off. The Lichtabstrahebenen parallel to each other and are arranged one above the other. Here, e.g. a plurality of light-emitting levels for white LEDs and a light-emitting level for red LEDs. By such a construction type results in accordance with a larger vertical extent. The complex wiring is generally done by additional wiring boxes that are mounted outside the light assembly. In other technical fields as beacons, z. B. in portable

Lamps such as DE 100 59 844 A1, are multicolor traffic lights with different colored LEDs known to output different colors without further optical alignment of the light radiation by optical means, etc. The invention has for its object to provide a beacon that can be formed with little effort and used for different fire types.

This object is achieved by a beacon according to claim 1. The dependent claims describe preferred developments.

Thus, different LED units are arranged alternately in the circumferential direction, preferably in a common horizontal plane. The various LED units differ at least in their spectral composition, in particular, they can represent white and red LED units or spend alternately white and red light. The different LED units can be controlled separately, in particular, the first LED units can be controlled together and accordingly the second LED units are controlled together.

In principle, more than two different LED units can be arranged alternately in the circumferential direction. However, it is recognized that in principle the formation of two different LED units, for. As an LED unit for white light and another LED unit for red light, is sufficient, since the LED units for different types of fire can also be controlled differently.

The alternating arrangement may be strictly alternating, i. subsequently

first LED unit - second LED unit - first LED unit - .. etc In principle, however, deviations from this strict consequence may also exist with other periodic arrangements; It is relevant that in the different directions of the horizontal plane, a superimposition of the light cones of each of the first LED units and each of the second LED units occurs in such a way that the desired or required light intensities result.

The individual LED units can each be formed by a single LED, z. B. a white LED for white light. However, an LED unit can also have a plurality of individual LEDs, which are arranged next to one another and also vertically above one another. These LEDs of a common LED unit can in particular be arranged with the same radius or distance from the common linear lens and thus be arranged compactly next to each other. Compared to the formation of a plurality of vertical LED rows, which each extend circumferentially around the support structure, this can be done on the one hand a much more compact training.

In particular, however, multiple LED's may share a common LED unit, i. with common, circumferential linear lens, which has only a single focus ring, reaches different luminous intensity distributions with different control and thus different fire types are formed. These differences may be in the luminous intensity in the horizontal direction, and also in the vertical luminous intensity distribution, i. the luminous intensity distributions at vertical angles to the horizontal plane.

It is recognized here that the sometimes very strict specifications according to different national and international standards for the radiation characteristics can be very well formed by the multiple LEDs per LED unit. So z. B. one or two LEDs in the horizontal

Plane are arranged and other LEDs vertically offset this something. The vertically offset LEDs thus contribute more to light intensity distributions at an angle to the horizontal plane.

A desired light intensity distribution in the vertical direction can thus be formed by superimposing LEDs at different distances from the horizontal plane. Due to the separate controllability and different energization of the individual LEDs of an LED unit thus different emission characteristics can be achieved with high variability and high accuracy.

The linear lens is preferably a linear Fresnel lens. Its focus ring is concentric with the axis of symmetry.

The different LED units may, according to a particularly advantageous embodiment, differ not only in their spectral composition but also in a further parameter. In particular, this parameter can be a different defocusing, which can be formed in particular by a different distance from the common lens. It is recognized that due to the different defocusing, a common circumferential lens can be used for different vertical light intensity distributions and thus different types of fire.

The different radial distances can be formed, for example, by forming vertical ribs or projections and grooves, which extend alternately in the circumferential direction of the support structure. Alternatively, in principle, support elements of the individual LEDs can be formed differently thick or stacked on a cylindrical surface, so that the support structure is in several parts with the cylindrical body and the attached support elements, for. B. circuit carriers that form the projections or ribs. The formation of radial grooves and However, projections in a one-piece support structure results in a higher manufacturing accuracy and the possibility that they each have a flat surface and thus the boards or support elements of the LED units can be applied as planar elements surface and thus clearly positioned. For this example, a metal cylinder can be milled suitable. In principle, however, z. B. also a multi-part support structure can be used.

A different defocusing can also be achieved by attachment optics in front of individual LED units, z. B. only in front of the first or second LED units. Thus, the radial offset or the different radial distances can be omitted.

Other parameters that contribute to the different control can be different flashing frequencies or currents.

It is recognized that the circumferentially alternating training, in particular alternately both in the spectral composition as well as in the different defocusing, synergistically complemented with the formation of one of the two LED units with a plurality of vertically offset individual LEDs. This combination takes into account in a special way that the different fire types also require different vertical light intensity distributions, sometimes with upper and lower limits. These particular requirements may be met by a single linear lens, i. with a single focus ring, can be achieved in a particularly advantageous manner by combining the different defocusing with the vertical offset.

The support structure may in particular be a support tube or a cylindrical inner housing. This support tube can also be used to connect the cover and floor, between which the Fresnel lens is received. men is. Here, for example, a transparent tube of z. As plastic or glass to seal against the outside space may be provided, wherein the transparent tube may be provided outside the Fresnel lens and the metal cylinder, in particular directly outside the Fresnel lens. This results in a compact, narrow-building, preferably cylindrical block.

The electronic control device (s) may be used e.g. be provided on the cover or bottom on a circuit board or other circuit board, so that this compact unit can be connected directly to a power supply. The circuit carrier can be z. B. extend over the entire cross section of the bottom or lid, so that short cable paths to the LED units are possible. Basically, the control device by several components or individual, cooperating control devices, for. B. two control devices for the different colored, LEDs are formed.

The various LED units and in particular also individual LEDs within the LED units can be advantageously controlled by separate channels. The control can be carried out in particular via PWM (pulse width modulation), as this different light intensities can be formed without polarity change. The pulse rate of the PWM is not significant for a beacon. In particular, the typical clock rates of PWM are significantly higher or higher-frequency than the flashing frequencies, the z. B. lie in the Hertz range.

Furthermore, it is recognized that a coating of the areas lying in the emission area of the LEDs with a light-absorbing material is helpful in order to observe the emission characteristics. Thus, relevant surfaces on the lid and on the floor, which lie in the radiation range of the LEDs, can be coated accordingly. The linear lens preferably has a single focus ring or an annular focus, which runs concentrically to the axis of symmetry of the beacon.

The linear lens extends annularly completely circumferentially around the support structure in the circumferential direction and the beacon preferably emits light in 360 ° of the horizontal plane; if necessary, a part of the LEDs can be switched off, for. B. at corners of a wind field or buildings.

The invention will be explained below with reference to the accompanying drawings to an embodiment. 1 shows a beacon according to an embodiment of the invention in cross-section or axial section;

Fig. 2 is a side view of the beacon;

3 is a perspective view of the beacon.

4 shows a radial section through the beacon.

5 is a highly schematic representation of the vertical emission angle of the beacon.

6 shows the LED units in front view, side view and perspective view; Fig. 7 is a side view of the inner cylinder with adjacent

LED units; Fig. 8 is a graph of the luminous intensity distribution versus the vertical angle for an example of a fire fire W Red-ES);

Fig. 9, the vertical light intensity distribution for a white fire after

ICAO Annex 14, medium power type A; the vertical intensity distribution for a red fire according to ICAO Annex 14, medium type B or type C.

A beacon 1 serves as obstacle lighting and may be e.g. be mounted on a windmill. The beacon 1 has a substantially cylindrical inner casing 2 of preferably metal, e.g. Aluminum, a lid 3 fixed on the inner casing 2 of e.g. Aluminum, and a base 4 fixed to the underside of the inner casing 2 of e.g. Aluminum on. The inner housing 2 has an axis of symmetry A and surrounds a housing interior 5. Radially outside the inner housing 2, a linear Fresnel lens 7 is circumferentially arranged circumferentially about the axis of symmetry A. The

Fresnel lens 7 is thus arranged concentrically to the inner housing 2. Advantageously, the Fresnel lens 7 is attached to the lid 3 and the bottom 4. A gap 8 is formed between the inner housing 2 and the Fresnel lens 7, wherein the gap 8 is connected to the inner space 5 and can pass into these and thus there is a pressure equalization between them. Up and down the space 8 is limited by the lid 3 and the bottom 4. Advantageously, between the interior 5 and the beacon 1 surrounding outer space allows pressure equalization, z. B. via a membrane. Radially outside the Fresnel lens 7 can advantageously be a tube 6 made of transparent plastic, z. As acrylic glass, or glass as a transparent cover and sealing against the outside space to be arranged circumferentially. The linear Fresnel lens 7 may be made of an acrylic glass or transparent

Plastic, z. B. P A, be formed. On the outer circumference of the inner housing 2 LED units 10, 12 are mounted. The LED units 10, 12 are distributed in the circumferential direction and regularly spaced from each other. According to this embodiment, two different LED units, namely a white LED 10 as a first LED unit and a red LED array 12 as a second LED unit are arranged alternately in the circumferential direction and advantageously substantially on a common horizontal plane H through the axis A. , In FIG. 1, by way of example, two white LEDs 10 are shown, in FIG. 4 by way of example some of the white LEDs 10 and red LED arrangements 12. An alternating, uniformly spaced arrangement results in the circumferential direction. Thus, each white LED 0 and each red LED array 12 may each be assigned a segment in the horizontal plane H. In fact, however, the LED units 10 and 12 radiate over a larger angular range in the horizontal direction, so that there is a superimposition of the respective luminous LED units 10 or 12 to the outside.

The LED units 10 and 12 may differ in different parameters or even a combination of different parameters. First, the frequency spectrum is different: the white LEDs 10 emit white or broadband light over a larger wavelength range. The red LED arrays 12 comprise, for example, according to Fig. 7 a plurality of individual red LEDs, according to the illustrated embodiment six LEDs 14a, 14b, 14c, 14d, 14e 14f _t. Here, the red LEDs 14c and 14d are mounted in the center, and thus substantially on the horizontal plane H with the white LEDs 0, the vertically adjacent red LEDs 14b, 14e and the outer LEDs 14a, 14f respectively vertically and axially offset therefrom at intervals rd1 and rd2 from the horizontal plane H. For all the red LEDs 14a to f, a single Fresnel lens 7 with a single focus ring 9 is provided. The position or radius of the focus ring 9 in FIGS. 1 and 4 is purely exemplary in this case. The inner housing 2 is formed on its outside with axially extending projections 16 and grooves 18. The projections 16 and grooves 8 thus extend parallel and in the axial direction A. The white LEDs 10 are arranged on the projections 16, the red LED arrangements 12 in the grooves 18. Thus, the radial distances R1 of the white LEDs 10 to the axis A are slightly larger than the radial distances R2 of the red

Accordingly, the spacings d1 of the white LEDs 10 with respect to the Fresnel lens 7 are slightly smaller than the distances d2 of the red LED arrays 12. Thus, different defocusing of the different LED units 10 and 12 can be achieved To achieve desired optical properties, in particular to allow a desired vertical fanning. The grooves 18 and projections 16 allow this larger and more accurate differences in the radii as z. B. glued carrier platelets. The projections 16 and grooves 18 can advantageously with planner

Outer surface may be formed to receive the LED carriers 20 and 22 of the white LEDs 10 and red LEDs 14a to 14f each surface. The LEDs can-in a manner known per se-each be designed as die or semi-conductor die having a spreader 23, 24 influencing the optics on the LED carrier 20 or 22, with supplementary connection contacts and optionally also already a drive circuit.

The white LEDs 10 may have, for example, luminous surfaces of 3 × ³ mm ² at 0.9 mm in height, for example at a dominant wavelength of 550 nm. They may in principle be designed as pure surface radiators, wherein their spreader 23 already determines a certain focus, which is further determined by the optical properties of the Fresnel lens 7.

For example, the red LEDs 14a to 14f may each have luminous surfaces of 1x1 mm ² area at a height of 0.6 mm, their dominant wavelength being, for example, 617 nm.

The radius R2 of the red LEDs 14a to 14f may be e.g. at R2 = 99.6 mm, and the first radius R1 of the white LEDs 10 at e.g. 102 mm, i. 2.4 mm more than the red LEDs 14a to 141

The Fresnel lens 7 common to the LED units 10 and 12 is linear, i. it has in known manner in the axial direction A (vertical direction) on a plurality of lens sections with different curvature, which thus optically emulate a larger lens or thicker-bodied lens, in particular a thicker convex plan lens. The single focus ring 9 of the Fresnel lens 7 is coaxial with the axis of symmetry A and lies in the horizontal plane H. By fixing the Fresnel lens 7 between the lid 3 and the bottom 4, e.g. by corresponding grooves or grooves or paragraphs in the lid 3 and bottom 4, their position is clearly defined. The Fresnel lens 7 may e.g. have a radius of 166 mm. The plan side of the Fresnel lens 7 is inside and the structured side outside. The construction height and thus aperture of the Fresnel lens 7 is e.g. 110 mm. The transparent tube 6 may e.g. an outer radius of 170 mm at e.g. have a thickness 5.

For example, forty-eight LED units 10, 12 may be arranged, ie, twenty-four white LEDs 10 each and twenty-four red LED arrays 12, so that each LED unit 10 or 12 corresponds to a segment of 7.5 °. The white LEDs 10 and the red LED arrays 12 may be energized independently and with different patterns, three types of fire being shown in FIGS. 8-10. In this case, in each case the light intensity L, unit Candela cd, is plotted as a function of the vertical emission angle V (in degrees or °), that is to say in accordance with FIG. 5 the angle with respect to H.

9 shows a white flashing fire, including the limits of light distribution indicated by the bars gl, g2, g3, g4 in accordance with the relevant ICAO, Annex 14, Type A medium power, white, flashing light with 20 to 60 flashes per Minute, 20 000 cd / in ² or 2 000 cd / m. These fires can thus be achieved exclusively with the white LEDs 10, for 20 000 cd / in ² or 2 000 cd / m with different current intensity.

Fig. 8 shows the light intensity distribution Fire-W-Red-ES (FWR-ES) for red flashing fire, which represents red flashing light at a power of 150 cd in the horizontal H. This light intensity distribution is also narrowly normalized. For the specification FWR-ES, where ES stands for extended specification, a narrow band results, which is defined by the upper, in the diagram substantially trapezoidal boundary og and the lower limit ug and for each vertical angle value only a relatively narrow band of eg about 85 cd, at even higher angles above 10 ° or below minus 10 ° even lower. These narrow standards are also achieved. For this purpose, in FIG. 8 all six LEDs 14a to 14f of the red LED arrangement 12 are actuated, without driving the white LEDs 10, e.g. in the following control:

14a with 6.1 Im (lumen), 14b with 7.8 Im, 14c, 14d each with 3.3 Im, 14e with 7.1 Im, 14f with 6.5 Im, thus a total luminous flux of 34 Im In FIG. 8, the efficiency is, for example, 57% and thus corresponds to the value for RbT of FIG. For the red fire according to FIG. 10 according to ICAO, Annex 14, medium power type B (flashing) flashing light 20 to 60 flashes per minute, peak power 2000 cd / m in the red LED arrangement 12 only the middle four red LEDs 14b, 14c, 14d, 14e, but not the outer red LEDs 14a, 14f driven. In this case, for example, the middle LEDs 14c, 14d, with corresponding activation 38 Im and the adjacent red LEDs 14b, 14e, each contribute 4.5 Im, so that the four LEDs 14b to 14d together result in 85 Im. With gn1 to gn4 the limit values are shown as bars. Furthermore, ICAO, Annex 14, Medium Power Type C, can also be used

(Continuous light).

In the measuring curves of FIGS. 8 and 10, in particular in the middle region, a plurality of peaks can be seen which originate from the individual red LEDs. The overall curve results as a superposition of the intensity distributions of all the LEDs, i. in Fig. 10 of the LEDs 14b, 14c, 14d, 14e and in Fig. 8 all LEDs 14a to 14f.

The vertical luminous intensity distribution according to Fig. 8 and Fig. 10 is thus determined by first the vertical arrangement of the individual red LEDs 14a to 14f, i. in particular also the vertical distances rd1 of the red LEDs 14b, 14e and the vertical distances rd2 of the red LEDs 14a, 14f, furthermore by the spreader 24 of the red LEDs 14a to 14f, the radial distance d2 of the entire red LED array 12 from the Fresnel Lens 7 and the optical properties of the Fresnel lens. 7

The following parameters can thus be varied:

Number of LEDs per LED array 12, current or light intensity of the individual LEDs 14a to 14f and 10, in particular different

LEDs 14a to 14f of an LED array 12 are energized differently can, furthermore, the radii R1, R2 and distances d1, d2 to the common Fresnel lens 7, as well as the spectral distribution or pitch lengths.

As additional parameters, instead of or in addition to the projections 16 and grooves 18, additional optics can be placed on the LEDs 10 and / or 14a to 14f, whereby the different defocusing can be achieved.

On the cover 3 and the bottom 4, cooling fins 31, 32 are advantageously formed, which, however, have no supporting functions in the embodiment shown.

In FIG. 1, the light 30 emitted by the right-hand white LED 10 is drawn. As an aperture, the Fresnel lens acts 7. The inner surfaces 26, 27 on the underside of the lid 3 and the top of the bottom 4 are advantageously coated with a Fichtabsorbierenden material, so as not to influence the radiation characteristics.

A controller 33 is e.g. formed by a circuit substrate, in particular a printed circuit board with recorded components and is used to control the LED units 10 and 12. The control device 33 may in particular be attached to the bottom 4 or 3 on the lid. Preferably, the controller 33 extends substantially over the entire cross-section, i. via the housing interior 5 and the gap 8, so that the lines for contacting the LED units 10, 12 are short. In the control device 33, among other things, the Bestro- mung for the different types of fire are stored.

It is also possible that the control device 33 does not circulating all white or red LED units 10 and 12 controls, but only within an angle less than 360 ° in the horizontal plane H, z. B. for corner positions in a wind turbine field.

LIST OF REFERENCES

1 beacon

2 cylindrical inner housing

3 lids

4 floor

5 housing interior

6 transparent tube

7 linear Fresnei lens

8 space

9 focus ring

10 white LEDs as the first LED unit

12 red LED arrangement as a second LED unit

14a, 14b 14c, 14d, 14e, 14f red LEDs

16 projections

18 grooves

20, 22 LED carrier

23, 24 spreader

26, 27 inner surfaces of the intermediate space 8

30 light

31, 32 cooling fins

33 control device

A symmetry axis

d1 Distances of white LEDs 10 with respect to Fresnel lens 6 d2 Distances of red LED arrays 12

gl, g2, g3, g4 limits of light distribution

gn1 to gn4 limits as bars H horizontal plane

above upper limit

lower limit

rd1 and rd2 distances from the horizontal plane H. R1 Radial distances of the white LEDs 10

R2 radial distances of the red LED arrays 12

V vertical beam angle

Claims

claims

1. beacon (1), in particular for a windmill, wherein the beacon (1) has at least:

a support structure (2) with a plurality of circumferentially and outwardly directed LED units (10, 12), and

a radially outwardly of the LED units (10, 12) arranged and extending in the circumferential direction, linear lens (7) for bundling of the plurality of LED units (10, 12) output light (30), wherein the linear lens (7) is provided in common for the plurality of LED units (10, 12),

characterized in that

two or more different LED units (10, 12) are mounted alternately in the circumferential direction on the support structure (2),

wherein first LED units (10) and second LED units (12) have different spectral compositions of their output light (30),

wherein the first LED units (10) and the second LED units (12) are separately controllable.

2. beacon according to claim 1, characterized in that the first LED units (10) emit white light and the second LED units (12) red light.

3. Beacon according to claim 1 or 2, characterized in that the first LED units (10) and the second LED units (12) continue to differ in at least one of the following parameters:

Number of LEDs (10, 14a, 14b, 14c, 14d, 14e, 14f) per LED unit (10, 12), light intensity. Beacon according to one of the preceding claims, characterized in that the first LED units (10) and the second LED units (12) continue to differ in at least one of the following parameters:

radial distance (R1, R2) to the axis of symmetry (A) of the beacon (1) and / or radial distance (d1, d2) to the linear lens (7).

Beacon according to claim 4, characterized in that the support structure (2) has alternating radial recesses (18), e.g. vertical grooves (18), and radial projections (16) for forming the different radial distances (R1, R2) of the first and second LED units (10, 12) to the axis of symmetry (A) and / or the different distances (d1, d2) of the first and second LED units (10, 12) to the common linear lens (7).

Beacon according to claim 5, characterized in that the white LED units (10) on the projections (16) and the red LED units (12) in the recesses (18) are arranged.

Beacon according to one of the preceding claims, characterized in that the support structure (2) as a cylindrical inner housing (2) is formed, at its end faces a bottom (4) and a lid (3) are mounted, wherein the linear lens (7) between the bottom (4) and the lid (3) is received.

Beacon according to claim 7, characterized in that in the intermediate space (8) formed between the support structure (2) and the linear lens (7) inner surfaces (26, 27) of the cover (3) and the bottom (4) with a light-absorbing coating are provided.

9. Beacon according to one of the preceding claims, characterized in that the first and / or the second LED units (12) a plurality of individual LEDs (14a, 14b, 14c, 14d, 14e, 14f), at least some of which separately are controllable.

10. beacon according to claim 9, characterized in that at least some of the plurality of LEDs (14a, 14b, 14c, 14d, 14e, 14f) of the LED unit (12) are arranged vertically one above the other,

wherein the vertical light distribution of the LED unit (12) having the plurality of individual LEDs (14a, 14b, 14c, 14d, 14e, 14f) depends on:

the vertical distances between the individual LEDs (14a, 14b, 14c, 14d, 14e, 14f) and the energization of the individual LEDs (14a, 14b, 14c, 14d, 14e, 14f) and the individual vertical light intensity distribution of the individual LEDs (14a, 14b, 14c, 14d, 14e, 14f).

11. beacon according to claim 10, characterized in that the vertically spaced individual LEDs (14a, 14b, 14c, 14d, 14e, 14f) of the LED unit (12) are energized at least two different types of fire with different power distributions.

12. Beacon according to claim 11, characterized in that in one of the two types of fire, a part of the individual LEDs (14b, 14c, 14d, 14e) of the LED unit (12) energized and the other LEDs (14a, 14f) de-energized are, for example for a red flashing fire.

13. Beacon according to one of the preceding claims, characterized in that it comprises a central control device (33) for An¬ control of the first and second LED units (10, 12), wherein in the central control device (33) driving pattern for at least two different fire types are stored, with min. at least one type of fire is provided for energizing the red LED units (12) and at least one type of fire for energizing the white LED units (10) is provided. 14. Beacon according to claim 3 and one of claims 6 to 8, characterized in that the central control device (33) on the inner housing (2) or the lid (3) or the bottom (4) is mounted. 15. Beacon according to claim 13 or 14, characterized in that at least two fire types differ in one or more of the following parameters:

Flashing frequency, light intensity in the horizontal plane, spectral composition, vertical light intensity distribution.