EP1761726A1 - Lanterne pour mettre un signal d'alarme de manière circulaire - Google Patents

Lanterne pour mettre un signal d'alarme de manière circulaire

Info

Publication number
EP1761726A1
EP1761726A1 EP05774127A EP05774127A EP1761726A1 EP 1761726 A1 EP1761726 A1 EP 1761726A1 EP 05774127 A EP05774127 A EP 05774127A EP 05774127 A EP05774127 A EP 05774127A EP 1761726 A1 EP1761726 A1 EP 1761726A1
Authority
EP
European Patent Office
Prior art keywords
light
central
belt
lantern
optics
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05774127A
Other languages
German (de)
English (en)
Other versions
EP1761726B1 (fr
Inventor
Klaus Kolb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kolb Klaus
Original Assignee
Kolb Klaus
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE202004009781U external-priority patent/DE202004009781U1/de
Application filed by Kolb Klaus filed Critical Kolb Klaus
Publication of EP1761726A1 publication Critical patent/EP1761726A1/fr
Application granted granted Critical
Publication of EP1761726B1 publication Critical patent/EP1761726B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/06—Lighting devices or systems producing a varying lighting effect flashing, e.g. with rotating reflector or light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/06—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for aircraft runways or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lantern for radiant radiation of a warning signal around a lantern axis, with a base body which can be fastened to a mounting location and an optical basic arrangement which has an annular support element and an external belt optics.
  • each of the illuminants radiates light radially outward with respect to the lantern axis in a solid angle range that covers an azimuth angle around the lantern axis that is considerably smaller than 360 ° and covers a polar angle relative to the lantern axis that is considerably larger than a target polar angle range, in which the warning signal is to be emitted around a central polar direction,
  • the arrangement of the illuminants on the support element, the arrangement of the support element and the outer belt optics and the design of the outer belt optics are coordinated with one another in such a way that the central light emitted by the illuminants after emerging from the outer belt optics in the polar direction within the SoU polar angle range is emitted.
  • Such a lantern is known from the applicant's DE-U-203 05 625.
  • the well-known lantern is already working very well. In particular, with a relatively simple construction, it has outstanding waterproofness and high mechanical reliability and robustness.
  • the lamps of the known lantern are conventional 5 mm light-emitting diodes, which have a beam opening angle of approx. 30 ° due to the optics integrated in the light-emitting diodes. point.
  • a luminous intensity of the lantern of approximately 150 to 200 candelas can generally be achieved.
  • lanterns In order to also comply with international regulations in the aviation industry, lanterns have to achieve significantly higher luminosities. This is no longer easily achievable with conventional light-emitting diodes.
  • the object of the present invention is therefore to develop the lantern known from DE-U-203 05 625 in such a way that the novel high-performance light-emitting diodes can also be used with such a lantern.
  • the basic optical arrangement also has an inner belt optic
  • the support element has a belt reflector
  • That light that is emitted by the illuminants outside the central polar angle range is first reflected radially outward from the belt reflector and only then passes through the inner and outer belt optics and
  • the arrangement of the illuminants and the belt reflector on the support element and the design of the belt reflector are coordinated with one another in such a way that the outside light strikes the inner belt optics as a bundle of light parallel or slightly diverging in the polar direction, a radially relatively compact construction of the lantern is possible.
  • the inner belt optic is designed in such a way that the outside light emerges from the inner belt optic as a bundle of light that is parallel or slightly converging in the polar direction, this structure can be made even more compact.
  • the inner belt optics are thus preferably designed in an inner central region in which the outside light penetrates them in such a way that the polar direction of the outside light is essentially not changed by it or the outside light is broken by it towards the central polar direction.
  • the central light contains light which is emitted in a polar central region containing the central polar direction (inner central light) and light which is emitted in two outer regions adjacent to the central region on one side in each case in the polar direction (outer central light).
  • the inner central light does not overlap with the outside light, at least until it enters the inner belt optics.
  • the outer central light overlaps with the outer light at the latest when it exits the inner belt optics.
  • the inner belt optic is therefore preferably designed in an inner interior area in which it is penetrated exclusively by the inner central light such that the inner central light does not overlap with the outer light even in the outer belt optic.
  • the inner central light can be influenced by the outer belt optics independently of the outer light and also independently of the outer central light.
  • the inner belt optics in the inner inner region can be designed as a polar-acting converging lens, so that the inner central light is refracted by it towards the central polar direction.
  • the outer belt optics has an outer inner region in which it is penetrated exclusively by the inner central light.
  • the outer belt optic is preferably designed as a ring of uniform thickness.
  • it can be designed as a weak polar lens. Training as a polarizing diverging lens is preferable.
  • the outer belt optics should be designed in such a way that the inner central light emerging from the outer belt optics diverges in the polar direction, but at most covers the desired polar angle range.
  • the inner central light should preferably cover at least 80% of the SoU polar angle range. Because then there is a relatively uniform illumination of the entire SoUpolarwinkel Anlagen. This is because the lamps emit their light in a wide solid angle range, but the direct radiation to the outside is stronger than the radiation to the side.
  • the inner belt optic is further preferably designed in an inner outer region in which it is penetrated exclusively by the outer central light in such a way that the outer central light is refracted by it towards the central polar direction. This measure again promotes the compactness of the structure of the lantern according to the invention.
  • the corresponding configuration of the inner belt optics is possible because this area of the inner belt optics is not penetrated by other light.
  • either only the interface of the inner belt optics to the outer belt optics or both the interface to the lamps and the outer belt optics can be adapted accordingly.
  • the outer central light should, insofar as it comes from the inner outer rich emerges, after emerging from the inner belt optics, a light beam that is essentially parallel or slightly diverging in the polar direction.
  • the design of the lantern according to the invention is such that the outer central light, insofar as it has penetrated the inner belt optics in an area that has also been penetrated by the outside light, penetrates the outer belt optics in a first outer outer area that only only by the outer central light, but not also is penetrated by the inner central light or the outside light. Because this enables individual influencing of this part of the external central light.
  • this first outer outer region it is therefore possible for this first outer outer region to be designed in such a way that the outer central light is refracted by it in the polar direction towards the central polar direction, so that the outer central light emerging from the outer belt optics diverges in the polar direction, but at most covers the nominal polar angle region ,
  • the outer central light which originates from the inner outer region of the inner belt optics, which was penetrated exclusively by the outer central light, preferably penetrates the outer belt optics in a second outer outer region, which is penetrated only by the outer central light, but not also by the inner central light or the outer light ,
  • the first outer outer region and the second outer outer region are different from one another.
  • an individual configuration of this second outer outer region is possible.
  • the second outer outer region can therefore also be designed in such a way that the outer central light is broken by it in the polar direction towards the central polar direction, so that the outer central light emerging from the outer belt optics diverges in the polar direction, but at most covers the desired polar angle region.
  • the outer belt optics In order to also completely deflect the outer central light in the polar direction into the desired polar angle range around the central polar direction, the outer belt optics must have a relatively large radial thickness. In order to reduce this thickness, it is possible, for example, to design the outer belt optics as Fresnel optics, at least in their outer outer regions.
  • the outside light penetrates the outer belt optics preferably in an outer central region, which is penetrated only by the outside light, but not also by the inside or outside central light. This is because the outer belt optics with respect to the outside light can be optimized for the outside light independently of the influence of the inside and / or outside central light.
  • the outer belt optics are preferably - analogous to the outer inner region - in the form of a ring of uniform thickness or alternatively in the form of a weak, polar-acting lens, the configuration as a diverging lens possibly being preferred.
  • the ring-shaped support element consists of an upper part, a lower part and a middle part
  • the upper part and the lower part are ring-shaped elements, in particular turned parts,
  • the upper part and / or the lower part have an area which faces the other part and is designed to be reflective
  • the support element is simply constructed. Furthermore, when the support element is assembled, an internal adjustment of the individual elements of the support element takes place. The adjustment relative to the outer belt optics and - if the inner belt optics should not also be held by the support element - possibly also relative to the inner belt optics can be effected via setting elements, as is shown in DE-U-203 05 625 on pages 14 and 15 thereof Connection with the figure 3 is described.
  • the inner belt optic is preferably arranged between the upper part and the lower part. On the one hand, this enables a more compact construction of the lantern.
  • the inner belt optic is preferably floating to both the upper part and the lower part. This avoids mechanical tensions in the inner belt optics, which could otherwise affect the optical properties of the inner belt optics and also lead to mechanical damage in the inner belt optics.
  • the upper part and the lower part are identical. In individual cases, however, it can also make sense to design the upper part and the lower part differently from one another. In particular, in individual cases, in order to influence the radiation characteristics in a targeted manner, it may be expedient to design only one of the two parts, ie either only the upper part or only the lower part, to be reflective.
  • the other part is preferably designed to be light-absorbing. In this case, for example, the other part can be provided with a light-absorbing layer, in particular black anodized. Which of the two parts is designed to be reflective and which to absorb light depends on the specific circumstances of the individual case, in particular the desired radiation pattern.
  • dividers are preferably designed to absorb light. With a sufficiently complex design of the dividers, however, they could also be designed to reflect light.
  • the light-absorbing part preferably has corresponding separating web receiving grooves for receiving the separating webs.
  • the separating webs are preferably held and / or glued in the part receiving them and are slightly spaced from the other of the two parts in the axial direction. If the base body has a support flange and a cover and the optical basic arrangement is arranged between the support flange and the cover, the tightness of the lantern can be ensured particularly easily.
  • the support element is preferably electrically insulated from the base body. Because then the lantern works particularly reliably in continuous operation. To achieve this electrical insulation, layers consisting of electrically insulating materials can be arranged, for example, both in the radial direction and in the axial direction between the support element and the base body. In order nevertheless to allow good dissipation of the heat loss generated by the lamps during operation of the lantern, the following configuration is preferably provided:
  • the lamps are thermally coupled to the support flange and / or cover via the support element.
  • Heat sinks are arranged on the support flange and / or cover, by means of which heat loss generated in the lamps can be dissipated to the surroundings.
  • the luminosity of the lantern according to the invention can be increased even further if the lantern has at least one additional optical arrangement which is designed in the same way as the basic optical arrangement and the optical arrangements are arranged one above the other as seen in the direction of the lantern axis.
  • the adjustment of the optical arrangements is easier. This is particularly true if an elastic spacer is arranged between the support elements of the optical arrangements. If at least the outer belt optics of the optical arrangements are connected to one another in one piece and are mounted between the support flange and the cover, the structural design of the lantern according to the invention is simpler since fewer individual parts are then required.
  • FIG. 2 shows the lantern from FIG. 1 in section
  • FIG. 3 shows a detail from FIG. 2,
  • FIG. 4 shows the principle of influencing the radiation characteristic of the lamps
  • FIG. 5 shows a supplementary illustration to FIG. 4
  • FIG. 6 shows an external belt optic in an alternative embodiment
  • FIG. 7 shows a modification of FIG. 4,
  • FIG. 8 shows a modification of FIG. 3,
  • FIG. 9 shows a plan view of a sector of a lower part
  • FIG. 10 shows a sector of a support element in plan view
  • FIG. 11 shows a section through FIG. 6 along line VII-VTI in FIG. 6,
  • Figure 12 is a block diagram
  • Figure 13 shows part of another lantern in section.
  • the lantern according to the invention is constructed similarly to the lantern of DE-U-203 05 625.
  • the DE is therefore always a supplement, in particular with regard to the basic mechanical construction of the lantern -U-203 05 625.
  • the lantern according to the invention thus has a base body 1, an outer belt optic 2 and a cover 3.
  • the base body 1 has a central tube 4, on which in particular a fastening flange 5 and a support flange 6 are arranged.
  • the lantern can be fastened at a mounting location by means of the mounting flange 5.
  • the mounting flange 5 has bores 7 through which the schematically indicated screws 8 can be passed.
  • the support flange 6, the central tube 4, the cover 3 and the outer belt optics 2 enclose an annular receiving space 9 in which an annular support element 10 is arranged.
  • the support element 10 essentially consists of an upper part 11, a lower part 12 and a central part 13.
  • a number of lamps 15 are arranged in a ring around a lantern axis 14.
  • the illuminants 15 can be any illuminants 15. However, they are preferably light-emitting diodes 15, in particular high-power light-emitting diodes 15.
  • An inner belt optic 16 is arranged between the upper part 11 and the lower part 12.
  • the support element 10 also carries the inner belt optics 16.
  • the support element 10 and the belt optics 2, 16 together form an optical basic arrangement.
  • the lantern is essentially rotationally symmetrical about the lantern axis 14.
  • the belt optics 2, 16 and the upper part 11 and the lower part 12 are completely ring-shaped parts.
  • the upper part 11 and the lower part 12, possibly also the belt optics 2, 16, are preferably designed as turned parts.
  • the configuration of the middle part 13 will be discussed in more detail later.
  • the outer belt optic 2 has the same function with regard to the sealing of the receiving space 9 as the belt optic described in DE-U-203 05 625. It is therefore on the stored in the same way towards the cover 3 and the support flange 6 as the belt optics of DE-U-203 05 625. It preferably consists of polymethyl methacrylate (PMMA, plexiglass).
  • the basic optical arrangement is thus arranged between the support flange 6 and the cover 3, as a result of which the tightness of the lantern can be ensured particularly easily.
  • the central tube 4 also serves the same purpose as the central tube of DE-U-203 05 625. In particular, it also serves for the radial fixation of the support element 10 and the radial and axial fixation of the cover 3.
  • the support element 10 is - see again Figure 3 of DE-U-203 05 625 - axially adjustable in height.
  • a central polar direction ⁇ can be set with respect to the lantern axis 14, in which an optical warning signal is emitted by the lantern.
  • the angle of the central polar direction is 90 °. If the lantern axis 14 is arranged vertically, the lantern emits its warning signal in all horizontal directions. In principle, the angle of the central polar direction ⁇ could also have a value other than 90 °.
  • the warning signal is thus emitted all around the lantern axis 14.
  • the warning signal is emitted only in a target polar angle range ⁇ around the central polar direction ⁇ .
  • the target polar angle range ß is usually only a few degrees, z. B. 2 to 10 °.
  • the upper part 11 and the lower part 12 each have an area 17, 18 which faces the other part 12, 11.
  • the mutually facing regions 17, 18 are designed to be reflective and form a belt reflector 17, 18 in their entirety. They are essentially parabolically curved.
  • the illuminants 15 are preferably arranged at the focal point of the parabola defined by them. In principle, an offset to the optical axis would also be possible.
  • both the upper part 11 and the lower part 12 have a reflecting region 17, 18. In this case, the upper part 11 and the lower part 12 are identical.
  • the part 12, 11 which is not designed to be reflective and / or not parabolic is preferably designed to be light-absorbing.
  • the other part 12, 11 can be provided with a light-absorbing layer, in particular black anodized. Which of the two parts 11, 12 is designed to be reflective and which is light-absorbing depends on the specific circumstances of the individual case, in particular the desired radiation characteristic.
  • the upper part 11 and the lower part 12 have receiving grooves 19, 20 in which they receive the middle part 13. These receiving grooves 19, 20 are arranged radially on the inside with respect to the upper part 11 and the lower part 12. The middle part 13 is held in them. The upper part 11 and the lower part 12 are thus held at a defined distance a from one another by the central part 13.
  • each part 11, 12 is formed in one piece with a reflecting area 17, 18.
  • the mirroring of the reflecting areas 17, 18 can be achieved in this case, for example, by finely machining the reflecting areas 17, 18, e.g. B. are polished.
  • the upper part 11 and the lower part 12 each to have an integral main body and for the reflective regions 17, 18 to be provided with a reflective coating.
  • the upper part 11 and the lower part 12 are preferably made of metal, in particular steel, e.g. B. stainless steel. If a separate reflective coating is provided, the upper part 11 and / or the lower part 12 can alternatively consist of metal (eg steel again) or plastic.
  • the coating can e.g. B. be a chrome coating.
  • the upper part 11 and the lower part 12 have further receiving grooves 21, 22 for receiving the inner belt optics 16, but these are arranged radially on the outside with respect to the upper part 11 and the lower part 12.
  • the upper part 11 and the lower part 12 have a projection b over the inner belt optics 16, so that this is protected to a limited extent against mechanical action from radially outside before and also during the mounting of the support element 10.
  • the inner belt optic 16 is preferably - like the outer belt optic 2 - made of PMMA (plexiglass). According to FIG. 3, it is floating towards both the upper part 11 and the lower part 12.
  • the floating mounting of the inner belt optics 16 towards both the upper part 11 and the lower part 12 is effected according to FIG. 3 by exactly one O-ring 23, 24. In principle, however, there could also be more than one O-ring 23, 24 each.
  • the upper part 11, the lower part 12 and the inner belt optics 16 preferably each have an O-ring groove 25 to 28 for receiving the O-rings 23, 24 arranged between them.
  • the fixation is particularly good and reliable if the O-ring grooves 25 to 28 have a slightly semicircular cross section, that is to say they cross an arc between 90 and 150 ° in cross section.
  • FIG. 4 is a simplified illustration of FIG. 3, expanded by the outer belt optics 2
  • FIG. 5 is a sectional illustration along the line V - V in FIG. 4.
  • each of the illuminants 15 radiates its light radially outward with respect to the lantern axis 14 into a solid angle range.
  • the solid angle range covers an azimuth angle ⁇ around the lantern axis 14, which is approximately 180 °, that is to say considerably smaller than 360 °.
  • the solid angle range covers a polar angle ⁇ , which is generally equal to the azimuth angle ⁇ , that is also approximately 180 °. In any case, this polar angle ⁇ is considerably larger than the target polar angle range ⁇ in which the warning signal is to be emitted around the central polar direction ⁇ .
  • the arrangement of the lamps 15 and the belt reflector 17, 18 on the support element 10, the arrangement of the support element 10 and the belt optics 2, 16 and the design of the belt reflector 17, 18 and the belt optics 2, 16 are coordinated with one another such that both the central light and the outside light after emerging from the outer belt optics 2 are emitted in the polar direction within the SoUpolarwinkel Scheme ß around the central polar direction ⁇ .
  • the reflecting regions 17, 18 are curved in a parabolic manner and the illuminants 15 are arranged in the focus line of the belt parabola defined in this way.
  • the arrangement of the illuminants 15 and the belt reflector 17, 18 on the support element 10 and the design of the belt reflector 17, 18 are thus coordinated with one another in such a way that the external light leaves the belt reflector 17, 18 as a parallel light beam in the polar direction and thus onto the inner one Belt optics 16 hits. If necessary, the light beam could also diverge slightly in the polar direction. However, an exactly parallel alignment is preferable.
  • the external light striking the inner belt optics 16 is therefore initially — at least essentially — directed into the central polar direction ⁇ .
  • the outer light passes through the inner belt optics 16 in an inner central region 31 and thus penetrates it.
  • the inner belt optic 16 is preferably designed such that it essentially does not change the polar direction of the outside light. It is therefore preferably designed as a cylindrical ring in the inner central region 31. If necessary, however, it could also slightly break the outside light onto the central polar direction ⁇ . In this case, it could also be that the outside light emerges from the inner belt optics 16 as a light bundle that converges slightly in the polar direction. Preferably, however, the outside light emerges from the inner belt optics 16 as a bundle of light parallel in the polar direction.
  • areas to which the adjective "inside” or “outside” is added refer to areas of the (radially inside) inner belt optics 16 or (radially outside) outside belt optics 2.
  • the prefixes inside, middle and outside in these areas refer to the position in the polar direction with respect to the middle polar direction ⁇ .
  • the outside light penetrates the outer belt optics 2 in an outer middle region 32.
  • the arrangement and configuration of the individual optical elements 15, 17, 18, 16, 2 are according to FIG. 4 such that the outer middle region 32 is only exposed to the outside light, but not to the Central light is penetrated. It is therefore possible to design the outer central region 32 of the outer belt optics 2 in such a way that the outer belt region 2 optics 2 emerging outside light slightly diverging in polar direction.
  • the outer belt optics 2 can alternatively be formed in the outer middle region 32 as a weak polar lens or, as shown in FIG. 4, as a ring of uniform thickness d.
  • the outside light emerging from the outer central region 32 of the outer belt optics 2 covers in the polar direction at most the desired polar angle region ⁇ around the central polar direction ⁇ .
  • the divergence of the external light results in the case of a ring of uniform thickness d due to the fact that the light-emitting diodes 15 have a finite area from which they emit their light, that is to say they are not point light sources.
  • the central light contains light that is emitted in a polar central region containing the central polar direction ⁇ .
  • This light is called the inner central light below. It is characterized in that it does not overlap with the outside light at least until it enters the inner belt optic 16, preferably even until it exits the inner belt optic 16. However, the central light also contains light which overlaps with the outside light at the latest when it emerges from the inner belt optics 16, possibly even within the inner belt optics 16 or in front of the inner belt optics 16. This light is emitted in two polar outer areas adjacent to the polar central area on one side in the polar direction.
  • the inner belt optic 16 is designed as a polar-acting converging lens in an inner inner region 33, in which it is penetrated exclusively by the inner central light, so that the inner central light is refracted by it towards the central polar direction ⁇ . This ensures that the inner central light does not overlap with the outer light even in the area of the outer belt optics 2.
  • the outer belt optics 2 can therefore also be designed as a ring of uniform thickness d or as a weakly polar-acting lens in an outer inner region 34, in which it is penetrated exclusively by the inner central light, so that the inner central light emerging from the outer belt optics 2 also in Polar direction diverges.
  • the divergence is around the central polar direction ⁇ , and at most around the target position. lar angle range ß.
  • the formation shown in Figure 4 as a ring of uniform thickness d is preferable.
  • the inner central light preferably emerges from the inner belt optics 16 as a light bundle parallel in the polar direction. Since, as already mentioned, the outside light preferably also emerges from the inner belt optics 16 as a bundle of light parallel in the polar direction, it is possible to design the outer belt optics 2 uniformly in their outer middle regions 32 and in their outer inner region 34, as shown in FIG. 4 is shown.
  • the outer central light is not so easy to use. Because part of the outer central light penetrates the inner belt optics 16 in an inner outer region 35, in which the inner belt optics 16 is penetrated exclusively by the outer central light. In this area, it is possible to design the inner belt optics 16 in such a way that this part of the outer central light is influenced individually, in particular toward the central polar direction ⁇ .
  • the outer central light passes through the inner belt optics 16 in the inner central region 31.
  • the outside light also passes through the inner belt optics 16.
  • the outer belt optic 2 is, however, spaced radially from the inner belt optic 16 to such an extent that this part of the outer central light hits and penetrates the outer belt optic 2 in a first outer outer region 36, the first outer outer region 36 no longer being present the outer central region 32 - and certainly not with the outer inner region 34 - overlaps.
  • the first outer outer region 36 of the outer belt optics 2 is therefore penetrated exclusively by the part of the outer central light which has penetrated the inner belt optics 16 in the region of the inner central region 31.
  • first outer outer region 36 in such a way that this part of the outer central light is broken toward the central polar direction ⁇ in the polar direction. It is thus possible to design the outer belt optics 2 in such a way that this part of the outer central light emerging from the outer belt optics 2 diverges in the polar direction around the central polar direction ⁇ , but at most covers the desired polar angle range ⁇ .
  • the part of the outer central light which has penetrated the inner outer region 35 is deflected by the inner belt optics 16 preferably in the polar direction in such a way that it emerges from the inner belt optics 16 as a light bundle which is essentially parallel or slightly diverging in the polar direction.
  • the deflection is selected such that this part of the outer central light passes through the outer belt optics 2 in a second outer outer region 37, which is different from the first outer outer region 36.
  • this second outer outer region 37 it is therefore also possible to design the outer belt optics 2 in such a way that this part of the outer central light is broken by the outer belt optics 2 in the polar direction towards the central polar direction ⁇ , after exiting the outer belt optics 2 in the polar direction diverges around the center polar direction ⁇ , but at most covers the target polar angle range ⁇ .
  • the outer belt optics 2 must have a relatively large radial thickness d (see FIG. 4). This is necessary so that the outer central light can also be deflected completely into the desired polar angle range ⁇ around the central polar direction ⁇ .
  • this radial thickness d can be reduced in that the outer belt optics 2 - at least in their outer outer regions 36, 37 - are designed as Fresnel optics 2.
  • the Fresnel optics 2 are preferably formed radially on the outside with respect to the lantern axis 14.
  • the outer belt optic 2 thus has at least one step 2 ′ radially on the outside in its outer outer regions 36, 37. This stage 2 'is not penetrated by emitted or emitted light.
  • the step 2 ' forms an inclination angle ⁇ l with the central polar direction ⁇ .
  • the angle of inclination ⁇ l is at least half as large as the target polar angle range ß. Because then there is no shielding of light that has already penetrated the outer belt optics 2 and has emerged from it.
  • a light beam 37 ' which touches the step 2' radially on the inside, forms a radiation angle ⁇ 2 with the central polar direction ⁇ .
  • the angle of inclination ⁇ l is preferably at most as large as the radiation angle ⁇ 2. Because then there is no shielding of light that penetrates the outer belt optics 2 in the area of the step 2 '.
  • the outer belt optics 2 As an alternative or in addition to the design of the outer belt optics 2 as Fresnel optics 2, it is also possible according to FIG. 7 to arrange one or more further belt optics 16 'between the inner belt optics 16 and the outer belt optics 2', which is also part of the basic optical arrangement or are.
  • a single further belt optical system 16 ′ is arranged between the inner belt optical system 16 and the outer belt optical system 2.
  • the further belt optics 16 ′ can be held by the support element 10.
  • the further belt optics 16, like the outer belt optics 2 are mounted between the cover 3 and the support flange 6.
  • the inner belt optics 16 and the outer belt optics 2 it is floating, in particular via one or two O-rings to the cover 3 and the support flange 6.
  • the further belt optics 16 ′ are preferably designed as a ring with a constant radial thickness in the area in which the inner central light and the outer light penetrate them. Because it essentially does not change the polar direction of the inner central light and the outer light. Outside this area, that is - provided that the additional belt optics 16 'are appropriately mounted - towards the cover 3 and the support flange 6, the additional belt optics 16' is penetrated exclusively by the external central light. In this area, it is designed as a collecting optics 16 'acting in the polar direction. In this area it breaks the external central light towards the central polar direction ⁇ .
  • FIG. 7 is possible as an alternative or in addition to the configuration according to FIG. 6.
  • one of the measures in FIGS. 6 and 7 is sufficient to steer the entire radiation emitted by the light-emitting diodes 15
  • a separating web 37a is arranged on the support element 10 between two illuminants 15 each.
  • the separating webs 37a extend in the radial direction from the illuminants 15 to the inner belt optics 16. According to FIG. 8, they are designed to be light-absorbing.
  • the separating webs 37a are usually either arranged in the upper part 11 or all in the lower part 12. According to FIG. 8, they are arranged, for example, in the lower part 12. According to FIG. 9, the lower part 12 therefore has separating web receiving grooves 37b, in which the separating webs 37a are received.
  • the separating webs 37a are preferably held in the lower part 12 by a clamp fit. Alternatively or additionally, they can also be glued into the lower part 12.
  • the separating webs 37a according to FIG. 8 are slightly spaced from the upper part 11 in the axial direction.
  • the middle part 13 consists of a plurality of individual elements 38 which are arranged in a circle around the lantern axis 14, so that each of the individual elements 38 has a tangential sector around the lantern axis 14 covers around. Exactly one of the illuminants 15 is arranged on each of the individual elements 38.
  • the individual elements 38 are connected to one another by a — preferably flexible — circuit board 39.
  • the individual elements 38 are preferably made of metal, in particular aluminum. They typically have a thickness of 1.5 to 3 mm in the radial direction, for. B. of 2 mm. In the circumferential direction they typically have a width of 8 to 15 mm, e.g. B. of 10 mm. In the direction of the lantern axis 14, they typically have a height between 40 and 50 mm, for. B. of 45 mm.
  • the lighting means 15 are designed as high-performance light-emitting diodes 15. The heat loss generated in them must therefore be dissipated.
  • the illuminants 15 according to FIG. 11 each have a thermal contact surface 40 radially inward. For better heat dissipation, these heat contact surfaces 40 are preferably coated with metal.
  • the illuminants 15 are thermally coupled to the individual elements 38 via the thermal contact surfaces 40. The coupling takes place via an electrically insulating heat-conducting adhesive 41.
  • the illuminants 15 must of course be electrically contacted. This takes place via the already mentioned — preferably flexible — printed circuit board 19.
  • the printed circuit board 19 is arranged between the individual elements 38 and the illuminants 15 according to FIG. 11. However, in order to impair the heat dissipation from the illuminants 15 to the individual elements 38 as little as possible, the printed circuit board 39 has recesses in the area of the heat contact surfaces 40, so that the illuminants 15 are glued directly to the individual elements 38 via the heat-conducting adhesive 41.
  • the heat loss is preferably carried away further via the upper part 11 and the lower part 12.
  • the individual elements 38 are thermally coupled to the base body 1 or the central tube 4 of the base body 1 via a heat-conducting foil 42.
  • the heat-conducting film 42 can in particular be designed as a foam film 42 so that it is compressible. The foam film 42 thus causes, among other things, that the support element 10 is radially spaced from the central tube 4. Since the heat-conducting film 42 also has an electrically insulating effect, there is no electrical contact between the support element 10 and the base body of the lantern when viewed in the radial direction.
  • the illuminants 15 are arranged in a uniform ring around the lantern axis 14.
  • the angles of (for example) 9 ° and 72 ° indicated in FIG. 12 are therefore tangential angles around the lantern axis 14.
  • each of the illuminants 15 is arranged in one of a plurality of strands 43-1 to 43-8 in accordance with FIG.
  • the strands 43 are here according to FIG. other electrically connected in parallel.
  • the illuminants 15 arranged in the respective strand 43 are electrically connected in series with one another.
  • the illuminants 15 of each of the strands 43 are likewise arranged uniformly around the lantern axis 14. If - for whatever reason - one of the strands 43 fails, there is therefore no dead area in the tangential direction around the lantern axis 14, into which no light is emitted. Rather, there is a so-called graceful degradation.
  • LEDs 15 are arranged. A total of 40 light-emitting diodes 15 are thus present. However, other numbers are also possible. Minimum values of six strands 43, four light-emitting diodes 15 per strand 43 and a total of 30 light-emitting diodes 15 should not be undercut. Furthermore, the number of light-emitting diodes 15 per line 43 should be the same for all lines 43.
  • the lantern of FIGS. 1 to 12 can be modified in accordance with FIG. This is because the lantern of FIG. 13 has an additional optical arrangement in addition to the basic optical arrangement.
  • the optical arrangements can be seen one above the other in the direction of the lantern axis 14.
  • Each of the optical arrangements is designed as explained above in connection with FIGS. 1 to 12, in particular FIGS. 3 and 4.
  • optical arrangement is considered to be the basic optical arrangement
  • Figure 13 is arranged below. Conversely, the optical arrangement which is arranged at the top in FIG. 13 is regarded as the additional optical arrangement.
  • the basic optical arrangement When viewed in the direction of the lantern axis 14, the basic optical arrangement is held at a defined distance a1 from the support flange 6.
  • the additional optical arrangement viewed in the direction of the lantern axis 14, is held at a defined distance a2 from the cover 3. The defined
  • Distances a1, a2 are preferably identical to one another. But this is not necessary.
  • the defined distances a1, a2 are preferably set via adjusting rings 44.
  • the adjustment rings 44 preferably have a defined thickness and consist of a practically non-deformable material.
  • the adjustment rings 44 are made of metal, e.g. B. again aluminum.
  • they can also consist of an electrically insulating material, in particular also in the form of a heat-conducting film.
  • the thermal coupling A of the support element 10 and thus also of the illuminant 15 to the support flange 6 and the cover 3 is retained.
  • there is no electrical contact between the support element 10 and the base body 1 of the lantern even when viewed in the axial direction.
  • the support element 10 is therefore completely electrically isolated from the base body 1 of the lantern.
  • the illuminants 15 are preferably high-performance light-emitting diodes 15.
  • the heat loss generated in the illuminants 15 must therefore be dissipated.
  • the heat sinks 44 ' are not shown in FIG. 2 only in order to maintain the clarity of FIG. 2.
  • the outer belt optics 2 of the optical arrangements are connected to one another in one piece. They are also - analogous to the configuration with only the basic optical arrangement - mounted between the support flange 6 and the cover 3. If - compare the above explanations for any further belt optics 16 '- these further belt optics 16' are also mounted between the cover 3 and the support flange 6, these belt optics 16 'are preferably also connected to one another in one piece.
  • an elastic spacer 45 is provided, which is arranged between the support elements 10 of the optical arrangements.
  • the spacer 45 is made For example, from a thin metal disc 46, which is provided with elastic layers 47 in the area towards the support elements 10.
  • the layers 47 can be made of rubber, for example.
  • the spacer 45 extends radially outward beyond the support elements 10. It preferably extends to just before the most radially inner belt optics 2, here the outer belt optics 2, which are connected in one piece and are mounted between the support flange 6 and the cover 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne une lanterne comprenant un corps de base (1), un élément support annulaire (10) et un système optique de Fresnel (16, 2) intérieur et extérieur. Sur l'élément support (10) sont disposés en anneau des dispositifs lumineux (15) et l'élément support comporte un réflecteur de Fresnel (17, 18). Chaque dispositif lumineux (15) émet de la lumière relativement à l'axe de la lanterne (14) de manière radiale vers l'extérieur dans une zone angulaire qui, par rapport à l'axe de la lanterne (14), couvre un angle polaire (δ) sensiblement plus grand qu'une zone d'angle polaire nominal (ß), dans laquelle le signal d'alarme est émis de manière circulaire autour d'une direction polaire médiane (α). La lumière émise par les dispositifs lumineux (15) traverse le système optique de Fresnel (16, 2) soit sans être précédemment incidente sur le réflecteur de Fresnel (17, 18), soit après avoir été réfléchie de manière radiale vers l'extérieur par le réflecteur de Fresnel (17, 18). Les dispositifs lumineux (15), le réflecteur de Fresnel (17, 18) et les systèmes optiques de Fresnel (2, 16) sont mutuellement adaptés de telle sorte que la totalité de la lumière, étant sortie du système optique de Fresnel extérieur (2) dans la zone d'angle polaire nominal (ß), est émise en direction polaire autour de la direction polaire médiane (α).
EP05774127A 2004-06-22 2005-06-15 Lanterne pour mettre un signal d'alarme de manière circulaire Not-in-force EP1761726B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202004009781U DE202004009781U1 (de) 2004-06-22 2004-06-22 Laterne zum Rundumabstrahlen eines Warnsignals
DE200520000916 DE202005000916U1 (de) 2004-06-22 2005-01-20 Laterne zum Rundumabstrahlen eines Warnsignals
PCT/EP2005/052764 WO2005124224A1 (fr) 2004-06-22 2005-06-15 Lanterne pour émettre un signal d'alarme de manière circulaire

Publications (2)

Publication Number Publication Date
EP1761726A1 true EP1761726A1 (fr) 2007-03-14
EP1761726B1 EP1761726B1 (fr) 2008-01-02

Family

ID=35170172

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Application Number Title Priority Date Filing Date
EP05774127A Not-in-force EP1761726B1 (fr) 2004-06-22 2005-06-15 Lanterne pour mettre un signal d'alarme de manière circulaire

Country Status (11)

Country Link
US (1) US20080025020A1 (fr)
EP (1) EP1761726B1 (fr)
AR (1) AR052518A4 (fr)
AT (1) ATE382825T1 (fr)
AU (1) AU2005255158B2 (fr)
BR (1) BRPI0512438A (fr)
CA (1) CA2570360C (fr)
DE (1) DE502005002430D1 (fr)
DK (1) DK1761726T3 (fr)
ES (1) ES2299071T3 (fr)
WO (1) WO2005124224A1 (fr)

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Also Published As

Publication number Publication date
DK1761726T3 (da) 2008-03-31
DE502005002430D1 (de) 2008-02-14
AU2005255158B2 (en) 2010-05-13
CA2570360A1 (fr) 2005-12-29
US20080025020A1 (en) 2008-01-31
EP1761726B1 (fr) 2008-01-02
AR052518A4 (es) 2007-03-21
AU2005255158A1 (en) 2005-12-29
ATE382825T1 (de) 2008-01-15
WO2005124224A1 (fr) 2005-12-29
ES2299071T3 (es) 2008-05-16
CA2570360C (fr) 2010-11-02
BRPI0512438A (pt) 2008-03-04

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