EP2994689A1 - Led module for emitting white light ('pizza arrangement') - Google Patents

Led module for emitting white light ('pizza arrangement')

Info

Publication number
EP2994689A1
EP2994689A1 EP14720948.0A EP14720948A EP2994689A1 EP 2994689 A1 EP2994689 A1 EP 2994689A1 EP 14720948 A EP14720948 A EP 14720948A EP 2994689 A1 EP2994689 A1 EP 2994689A1
Authority
EP
European Patent Office
Prior art keywords
light
led module
light field
sectors
field
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
EP14720948.0A
Other languages
German (de)
French (fr)
Other versions
EP2994689B1 (en
Inventor
Thomas LEITGEB
Peter Pachler
Jürgen GUMHOLD
Florian Wimmer
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.)
Tridonic Jennersdorf GmbH
Original Assignee
Tridonic Jennersdorf GmbH
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
Application filed by Tridonic Jennersdorf GmbH filed Critical Tridonic Jennersdorf GmbH
Publication of EP2994689A1 publication Critical patent/EP2994689A1/en
Application granted granted Critical
Publication of EP2994689B1 publication Critical patent/EP2994689B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • 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
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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

  • LED module for emitting white light
  • the present invention relates to an LED module for dispensing
  • the present invention relates to an LED module suitable for lamps having my reflector sizes.
  • the present invention finally relates to a lighting device with built-in LED module. From the prior art LED modules are known which are suitable for emitting white light. These LED modules usually have a light-emitting light field, which is formed by a combination of individual light points. The individual points of light are designed to emit different light spectra. For example, blue light, red light and yellow light generated by a phosphor are emitted from the light spots.
  • Such a known LED module 10 is shown for example in Fig. La. Fig. Lb shows a top view of the same LED module 10.
  • the LED module 10 has a light field 12, which together with others
  • Components 18 is arranged on a module plate 17.
  • the light field 12 is formed of a plurality of light spots 13a, 13b, 13c, each of light from a different wavelength range, d. H. another light spectrum.
  • the light spots 13a, 13b, 13c are generally formed by so-called glob tops (drops of disperse) above the LEDs 16.
  • the known LED module 10 has the disadvantage that it is too large
  • Light field 12 has to implement it with small reflector sizes.
  • FIG. 1b shows that the light field 12 has a diameter of at least 19 mm.
  • the object of the present invention is to provide an LED module for emitting mixed light, preferably white light, which improves the known state of the art.
  • present invention to provide an LED module that is suitable for lights with small reflector sizes. For this purpose, it is an object of the present invention to reduce a total light emitting surface of an LED module.
  • the present invention relates to an LED module for emitting mixed light, preferably white light, comprising a light field divided into a plurality of regions for outputting different light spectra, the regions of the light field being areal sectors.
  • the light field is a light emitting surface of the LED module according to the invention. Due to the planar sector distribution of the light field, it is possible to significantly reduce the total area of the light field in comparison with the total area of a known LED module containing points of light defined by glob tops. Due to the sector arrangement, the total light emission surface of the light field can in particular be reduced by at least 16%. Such a reduction is not possible with the glob top approach known from the prior art. Due to the significant reduction in area of the light field, the LED module according to the invention is also suitable for lights with small reflector sizes.
  • At least two area sectors are provided for each light spectrum.
  • the LED module according to the invention is designed, for example, to emit three different light spectra. In each case a light spectrum is coupled out of at least two of the area sectors of the light field. As a result, a very homogeneous and color-true mixed light, in particular white light, can be generated by the LED module as a whole.
  • the outer contour of the light field is preferably round.
  • the outer contour of the light field is circular.
  • the circular shape is particularly advantageous for lights that have optics with attached reflector.
  • circular islands may be provided in the light field for outputting at least one other spectrum of light, which may be advantageous to
  • Emitting light from the red light spectrum are designed.
  • an LED module can be formed which emits mixed light of three or more different light spectra and thereby has a particularly small Obstlichtabstrahl Stret.
  • the light field can thus be reduced in area.
  • the light field is suitable for emitting white light of a particularly natural light color temperature.
  • the circular sectors are preferably designed for emitting red, blue light and light from a further light spectrum, which is generated by a phosphor.
  • This further light spectrum can be, for example, light from the green and / or yellow light spectrum.
  • circular islands can be provided for emitting red light, so that in this case no red light would have to be provided by the circular sectors.
  • the light field has a diameter of 16 mm or less.
  • the LED module according to the invention is adapted to implement a lamp with small reflector sizes.
  • the LED module further comprises a light diffusion plate, which is arranged at a distance from the light field in the light emission direction of the light field.
  • the light diffuser gives the LED module a more homogeneous
  • the light diffuser also makes it possible to generate a diffused light and adjust the brightness of the LED module.
  • Lichtstreuin may additionally be provided with a phosphor, for example with an additional phosphor layer or embedded phosphor particles.
  • the diffuser is then suitable for influencing the color or color temperature of the light emitted by the LED module as a whole.
  • the lens is separated by a mixing chamber from the top of the light field.
  • different light spectra are preferably not visible from the outside for a viewer.
  • the light field is made with the planar sectors by dams and filling.
  • This method also known as the "dam-and-fiU” method, makes it particularly easy to produce the two-dimensional sectors of the light field.
  • the method enables a much smaller light field than can be achieved with the well-known Glob Top method Prefabricated component which is mounted on a module plate of the LED module.
  • planar sectors of the light field are separated from each other by dams.
  • the two-dimensional sectors of the light field comprise a transparent potting compound or a phosphor containing
  • the individual sectors of the light field are defined by the limiting dams and in the
  • Gaps between the dams is filled with potting compound to make the sectors flat.
  • the potting compound can from a
  • transparent potting compound with added phosphor exist, which is present for example as an undissolved powder or as phosphor particles.
  • the potting compound may also contain dissolved phosphors, i. it can be a phosphor potting compound.
  • a phosphor is generally a material that is excitable by light and then emits a secondary spectrum of light.
  • a phosphor may therefore be a light color conversion material.
  • the phosphor is a phosphor or a fluorescent material. Secondary light from the yellow and / or green spectrum is preferably emitted by the phosphor.
  • the planar sectors are designed at least for emitting light from the red light spectrum, light from the blue light spectrum or light from a further light spectrum generated by a phosphor.
  • the present invention understands light from the red light spectrum light having a wavelength between about 630 and 790 nm, light from the blue light spectrum light having a wavelength between about 390 to 480 nm, light from the green light spectrum light having a wavelength between about 480 and 560 nm and under light from the yellow light spectrum light of a wavelength between 560 and 630 nm.
  • the LED module according to the invention is thereby suitable for emitting white light, in particular natural-looking white light.
  • Natural-looking white light preferably has a light color temperature that corresponds to that of a black body.
  • planar sectors are each provided with at least one LED or one LED strand.
  • the at least one LED or the at least one LED string preferably sits between the baffles of the individual sectors on a module plate of the LED module.
  • the LED or the LED strand are potted with the potting compound. This fixes and protects the LEDs or the LED string.
  • the light emitted by the LED or the LED strand is transported by the potting compound from the LED module and optionally influenced or converted by a phosphor in the potting compound.
  • the LEDs may be, for example, blue-emitting, red-luminescent, green-luminescent, yellow-emitting or UV-emitting LEDs. That delivered by a surface sector
  • Light spectrum can come about through an interaction between at least one LED and the potting compound, or be generated directly from the at least one LED.
  • the present invention further relates to a method for producing an LED module for emitting mixed light, preferably white light, comprising the steps of: generating a light field which is subdivided into area sectors by forming dams, which sectors of the light field Separate, and filling a transparent potting compound or a phosphor-containing potting compound between the dams of each sector.
  • the reduced area of the light field can not be achieved by a conventional Glob Top method.
  • the present invention further relates to a lighting device having at least one LED module as described above and preferably a reflector set on the LED module.
  • the luminaire is designed especially for small reflector sizes.
  • the LED module according to the invention in particular its area-reduced light field is a necessary prerequisite.
  • Figures la and lb show an LED module known in the art.
  • Figures 2a and 2a show a first LED module according to the present invention.
  • Fig. 3 shows an alternative embodiment of a light field for LED module according to the present invention.
  • FIG. 4 shows a further alternative embodiment of a light field for an LED module according to the present invention.
  • FIG. 5 shows the light field shown in Fig. 4 again, in Fig. 5, the respective LED strands and their interconnection are indicated.
  • FIG. 2a shows a three-dimensional lateral view of a first exemplary embodiment of an LED module 1 according to the invention.
  • the LED module 1 is suitable for emitting mixed light, for example for emitting white light.
  • different emitted light spectra are mixed in the LED module l in such a way that the mixed light or the white light of the LED module 1 is produced as an overall impression for a viewer.
  • the LED module 1 has a module plate 7, on which at least one light field 2 is arranged, which is designed to emit the light of the LED module 1.
  • the light field 2 emits the light from its surface area. Furthermore, are advantageously on the
  • Module plate 7 even more components 8 are arranged.
  • These further components 8 may be, for example, electronic components such as drive components, microprocessors, capacities,
  • the electronic components can supply and / or control LEDs 6 or LED strings of the LED module 1 with energy.
  • Components 8 may also include cooling elements for dissipating heat from the module plate 7 and the light field 2, respectively. Furthermore, the cooling elements are also include cooling elements for dissipating heat from the module plate 7 and the light field 2, respectively. Furthermore, the cooling elements are also include cooling elements for dissipating heat from the module plate 7 and the light field 2, respectively. Furthermore, the cooling elements are also include cooling elements for dissipating heat from the module plate 7 and the light field 2, respectively. Furthermore, the
  • Module plate 7 to be provided with attachment means for attaching the LED module 1 in example, a light housing.
  • the module plate 7 has holes for screwing on the LED module 1.
  • the module plate 7 may be, for example, a printed circuit board such as a printed circuit board (PCB).
  • PCB printed circuit board
  • the module plate 7 is advantageously at least partially formed from a material which is used for
  • the light field 2 of the LED module 1 is subdivided into a plurality of areal sectors 3a, 3b, 3c.
  • Each of the sectors 3a, 3b, 3c is designed to emit light from a specific light spectrum.
  • the light field 2 preferably comprises at least a first type of sectors 3a, which emit light from a first light spectrum, and a second type of sectors 3b, which emit light from a second light spectrum.
  • Light field 2 is also a third type of sectors 3c, which emit light from a third light spectrum.
  • more different types of sectors can be used, giving off altogether four or even more different light spectra.
  • the light field 2 preferably comprises at least two sectors 3 a, 3 b, 3 c.
  • the light field 2 may include a first type of sectors 3a that emit light from a blue light spectrum, a second kind of sectors 3b that emit light from a red light spectrum, and a third kind of Sectors 3c, which emit light from a further spectrum of light that of a phosphor such
  • This further light spectrum advantageously comprises the green and / or yellow light spectrum.
  • the different regions of the light field 2 which emit different light spectra are not formed by light points but by area sectors 3a, 3b, 3c, a reduction of the total area of the light field 2 is possible.
  • the total light emission surface of the LED module 1 can therefore be reduced.
  • the light field 2 is round.
  • the light field 2 most preferably has one
  • the diameter of the light field 2 is preferably 16 mm or even less.
  • the area of the light field 2 may be about 200 mm 2 or less and is reduced by 16% in comparison with the prior art.
  • the circular light field 2 preferably has a subdivision into different types of circular sectors 3a and 3b.
  • the light field 2 preferably also has a plurality of circular islands 3 c which are located within the outer contour of the light field 2 are arranged.
  • a circular island 3c may form the center of the light field 2, ie, for example, may form the center of the circular outer contour.
  • further circular islands 3c may for example be arranged at regular intervals along the circumference of the Liehtfeldes 2.
  • the light field 2 as shown in Fig. 2a, a total of eight circular sectors 3a and 3b.
  • the inner division of the planar sectors 3a, 3b, 3c of the light field 2 can also have other shapes than those shown here (cf., for example, FIG. 3).
  • the circular islands 3 c are provided for emitting light from the red spectrum.
  • the true circular sectors 3a and 3b are preferably provided for emitting light from the blue and / or a further light spectrum, which is generated for example by a phosphor.
  • the planar sectors 3a, 3b, 3c of the light field 2 are preferably formed by dams and filling.
  • dams 5 are formed on the module plate 7 of the LED module in a first step, which determine the subsequent structure of the sectors 3a, 3b, 3c.
  • dams 5 By a dam 5 while the outer contour of the light field 2 is formed.
  • dams 5 For subdivision sectors 3a, 3b, 3c, for example rectilinear or curved dams 5 are drawn within the outer contour of the light field 2.
  • dams 5 For the formation of circular islands circular dams 5 within the
  • Outer contour of the light field 2 are formed. Once the dams 5 are formed on the module plate 7, the spaces defined thereby are filled.
  • the filling is carried out either with a transparent potting compound or with a potting compound which is provided with a phosphor, for example with phosphor particles. Phosphor particles may be in the potting compound as a powder Be provided phosphor. Even the potting compound itself can
  • a phosphor is generally characterized in that it can be excited by the light of an LED 6 and then emits a secondary light spectrum.
  • each planar sector 3a, 3b, 3c at least one LED 6 or an LED string is preferably arranged before the filling step. However, these can also be previously embedded in the module plate 7 and the sectors 3a, 3b, 3c are thus formed on the LEDs 6.
  • the dams 5 can also be formed around arranged on the module plate 7 LEDs 6 and LED strands around.
  • the LEDs 6 or LED strands are preferably enclosed by the potting compound, which is filled between the dams 5.
  • the LEDs 6 or LED strands are on the module plate 7 with power supply and preferably controllable.
  • Those sectors 3a, 3b, 3c which are filled with a transparent potting compound are designed to emit light emitted by one or more LEDs 6 unchanged.
  • red and / or blue light can be emitted by a red-emitting and / or blue-emitting LED 6.
  • Those sectors 3a, 3b, 3c which are filled with a potting compound containing a phosphor are adapted to emit light emitted by one or more LEDs 6 in a changed manner. This happens, for example, in that the light of these LEDs 6 excites the phosphor in the potting compound, whereby a secondary light spectrum is emitted from this. For example, yellow light or green light can thereby be generated and emitted.
  • each planar sector 3a, 3b, 3c may be provided with a potting compound that can change the light of the enclosed LED 6 or only some of the sectors 3a, 3b, 3c. It is even possible that each individual sector 3a, 3b, 3c of the light field 2 itself is designed to produce a white light.
  • a blue luminous LED 6 can be used, and can be used for each sector, a different phosphor potting compound as a filling.
  • a white light is generated by a combination of three different white lights and it can be achieved a particularly natural color temperature.
  • the LEDs 6 or LED strands in the various sectors 3 a, 3 b, 3 c of the light field 2 may be individually or jointly controllable such that their luminous color is variable by the control. Furthermore, preferably each LED 6 or LED track can be dimmed individually, for example by means of pulse width modulation.
  • FIG. 2b shows a plan view of the LED module 1.
  • a lens 4 may be arranged, which is shown here as a dashed circle.
  • the diffuser 4 has at least the same diameter as the light field 2, preferably a larger diameter.
  • the diffusing screen 4 may be provided with scattering particles which are selected such that they scatter the light emitted by the light field 2.
  • the scattering particles have a particle size which corresponds approximately to the wavelength of the emitted light spectra.
  • the lens 4 is spaced from the top of the light field 2.
  • the mixing chamber is merely a free space between the light field 2 and the diffuser 4.
  • the mixing chamber is, however, preferably designed to achieve an effective mixing of the different light spectra emitted by the light field 2.
  • optical elements may be provided in the mixing chamber, for example.
  • Optical elements are, for example, lenses or reflectors.
  • the mixing chamber may also be a solid block of a material having a high refractive index, for example, of 1.5 or more. Overall, it is achieved by the mixing chamber and the diffuser 4 together that the individual light spectra from the different area sectors 3a, 3b, 3c of the light field 2 are emitted, no longer from one
  • FIG. 3 shows an alternative embodiment of a light field 2 'for an LED module according to the present invention.
  • the light field 2 In contrast to the light field 2 shown in FIGS. 2 a and 2 b, the light field 2 'comprises no circular islands 3 c but only one circular sector 3 a', 3 V and 3 'for emitting light from one
  • the light field 2 comprises a first sector 3a, the light from a first light spectrum, a second sector 3b, the light from a second light spectrum and a third sector 3c, which can emit light from a third light spectrum.
  • FIG. 4 shows a further alternative embodiment of a light field 2 "for an LED module according to the present invention:
  • the light field 2 does not comprise circular islands 3c but respectively different sectors 3a “, 3b” and 3c "
  • Light field 2 a first type of sectors 3a", the light from a first light spectrum, a second type of sectors 3b ", the light from a second light spectrum and a third type of sectors 3c", which can emit light from a third light spectrum.
  • 5 again shows the light field 2 "illustrated in FIG. 4, the respective LED strands 6" and their interconnection being indicated in FIG. 5.
  • the connecting leads 7 are preferably in the The area between the respective sectors 3a “, 3b", 3c "provided.
  • the light field 2, 2 ', 2 "according to the invention preferably comprises the following layers from the bottom to the top: a highly reflective aluminum layer, an adhesive layer, an FR4 layer, an electrical one conductive copper layer, a solder mask ("solder mask”), a protective layer.
  • the manufacturing method according to the invention of the LED module 1 and the LED module 1 itself make it possible to produce a lighting device having the LED module 1 and preferably an attached reflector. Since the present invention is a reduction of the LED module 1 and the LED module 1 itself make it possible to produce a lighting device having the LED module 1 and preferably an attached reflector. Since the present invention is a reduction of the LED module 1 and the LED module 1 itself make it possible to produce a lighting device having the LED module 1 and preferably an attached reflector. Since the present invention is a reduction of the present invention.
  • Diameter of the light field 2, 2 !, 2 "allows the LED module 1 is particularly advantageous for a luminaire optics with an attached reflector.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)

Abstract

The present invention relates to an LED module (1) that is suitable for emitting mixed light, preferably white light. The LED module (1) has a light-emitting light field (2) that is divided into a plurality of regions for emitting different light spectra. The regions of the light field (2) are planar sectors (3a, 3b, 3c) according to the invention. The LED module (1) is produced by a method in which, for creating the light field (2), first barriers (5) are formed which separate sectors (3a, 3b, 3c) of the light field (2) from each other, and then a transparent casting compound or a casting compound containing a luminescent substance is filled between the barriers (5) of each sector (3a, 3b, 3c). The present invention thereby provides a lighting device that has at least one LED module (1) and preferably one reflector placed on the LED module (1).

Description

LED-Modul zur Abgabe von Weißlicht („Pizzaanordnung ")  LED module for emitting white light ("pizza arrangement")
Die vorliegende Erfindung betrifft ein LED-Modul zur Abgabe von The present invention relates to an LED module for dispensing
Mischlicht, vorzugsweise von Weißlicht, und ein Verfahren zur Herstellung eines solchen LED-Moduls. Insbesondere betrifft die vorliegende Erfindung ein LED-Modul, das für Leuchten mit Meinen Reflektorgrößen geeignet ist. Die vorliegende Erfindung betrifft schließlich eine Leuchtvorrichtung mit eingebautem LED-Modul. Aus dem Stand der Technik sind LED-Module bekannt, die zur Abgabe von Weißlicht geeignet sind. Diese LED-Module weisen in der Regel ein lichtabstrahlendes Lichtfeld auf, das durch eine Kombination einzelner Lichtpunkte gebildet wird. Die einzelnen Lichtpunkte sind dazu ausgelegt, unterschiedliche Lichtspektren abzugeben. Beispielsweise wird von den Lichtpunkten blaues Licht, rotes Licht und von einem Leuchtstoff erzeugtes gelbes Licht abgegeben. Mixed light, preferably white light, and a method for producing such an LED module. In particular, the present invention relates to an LED module suitable for lamps having my reflector sizes. The present invention finally relates to a lighting device with built-in LED module. From the prior art LED modules are known which are suitable for emitting white light. These LED modules usually have a light-emitting light field, which is formed by a combination of individual light points. The individual points of light are designed to emit different light spectra. For example, blue light, red light and yellow light generated by a phosphor are emitted from the light spots.
Ein solches bekanntes LED-Modul 10 ist beispielsweise in der Fig. la gezeigt. Fig. lb zeigt eine Draufsicht desselben LED-Moduls 10. Das LED- Modul 10 besitzt ein Lichtfeld 12, das zusammen mit weiteren Such a known LED module 10 is shown for example in Fig. La. Fig. Lb shows a top view of the same LED module 10. The LED module 10 has a light field 12, which together with others
Komponenten 18 auf einer Modulplatte 17 angeordnet ist. Das Lichtfeld 12 ist aus mehreren Lichtpunkten 13a, 13b, 13c gebildet, die jeweils Licht aus einem anderen Wellenlängenbereich, d. h. ein anderes Lichtspektrum, abgeben. Jedem der Lichtpunkte 13a, 13b, 13c ist, wie in Fig. lb gezeigt, wenigstens eine LED 16 zugeordnet. Die Lichtpunkte 13a, 13b, 13c sind in der Regel durch sogenannte Glob Tops (Dispenstropfen) über den LEDs 16 gebildet.  Components 18 is arranged on a module plate 17. The light field 12 is formed of a plurality of light spots 13a, 13b, 13c, each of light from a different wavelength range, d. H. another light spectrum. Each of the light spots 13a, 13b, 13c, as shown in Fig. Lb, associated with at least one LED 16. The light spots 13a, 13b, 13c are generally formed by so-called glob tops (drops of disperse) above the LEDs 16.
Das bekannte LED-Modul 10 hat den Nachteil, dass es ein zu großes The known LED module 10 has the disadvantage that it is too large
Lichtfeld 12 aufweist, um damit Leuchten mit kleinen Reflektorgrößen umzusetzen. Insbesondere zeigt die Fig. lb, dass das Lichtfeld 12 einen Durchmesser von mindestens 19 mm aufweist. Mit der Glob Top Methode ist es nicht möglich den Durchmesser des Lichtfelds 12 weiter zu verringern. Die Aufgabe der vorliegenden Erfindung ist es, ein LED-Modul zur Abgabe von Mischlicht, vorzugsweise Weißlicht, bereitzustellen, das den bekannten Stand der Technik verbessert. Insbesondere ist es eine Aufgabe der Light field 12 has to implement it with small reflector sizes. In particular, FIG. 1b shows that the light field 12 has a diameter of at least 19 mm. With the Glob Top method, it is not possible to further reduce the diameter of the light field 12. The object of the present invention is to provide an LED module for emitting mixed light, preferably white light, which improves the known state of the art. In particular, it is an object of
vorliegenden Erfindung, ein LED-Modul bereitzustellen, das für Leuchten mit kleinen Reflektorgrößen geeignet ist. Dazu ist es eine Aufgabe der vorliegenden Erfindung, eine Gesamtlichtabstrahlfläche eines LED-Moduls zu verkleinern. present invention to provide an LED module that is suitable for lights with small reflector sizes. For this purpose, it is an object of the present invention to reduce a total light emitting surface of an LED module.
Die vorliegende Erfindung wird durch die unabhängigen Ansprüche gelöst. Die abhängigen Ansprüche bilden den Kerngedanken der vorliegenden The present invention is solved by the independent claims. The dependent claims form the core idea of the present
Erfindung in vorteilhafter Art und Weise weiter. Invention in an advantageous manner on.
Insbesondere betrifft die vorliegende Erfindung ein LED-Modul zur Abgabe von Mischlicht, vorzugsweise von Weißlicht, das aufweist, ein Lichtfeld, das in mehrere Bereiche zum Abgeben von unterschiedlichen Lichtspektren unterteilt ist, wobei die Bereiche des Lichtfeldes flächige Sektoren sind. More particularly, the present invention relates to an LED module for emitting mixed light, preferably white light, comprising a light field divided into a plurality of regions for outputting different light spectra, the regions of the light field being areal sectors.
Als Lichtfeld wird eine Lichtabstrahlfläche des erfindungsgemäßen LED- Moduls bezeichnet. Durch die flächige Sektorenaufteilung des Lichtfeldes ist es möglich, die Gesamtfläche des Lichtfeldes im Vergleich mit der Gesamtfläche eines bekannten LED-Moduls, das durch Glob Tops definierte Lichtpunkte enthält, deutlich zu reduzieren. Durch die Sektorenanordnung kann die Gesamtlichtabstrahlfläche des Lichtfeldes insbesondere um mindestens 16% verkleinert werden. Eine solche Verringerung ist mit dem aus dem Stand der Technik bekannten Glob Top Ansatz nicht möglich. Durch die deutliche Flächenverringerung des Lichtfeldes ist das erfindungsgemäße LED-Modul auch für Leuchten mit kleinen Reflektorgrößen geeignet. The light field is a light emitting surface of the LED module according to the invention. Due to the planar sector distribution of the light field, it is possible to significantly reduce the total area of the light field in comparison with the total area of a known LED module containing points of light defined by glob tops. Due to the sector arrangement, the total light emission surface of the light field can in particular be reduced by at least 16%. Such a reduction is not possible with the glob top approach known from the prior art. Due to the significant reduction in area of the light field, the LED module according to the invention is also suitable for lights with small reflector sizes.
Vorteilhafterweise sind für jedes Lichtspektrum wenigstens zwei flächige Sektoren vorgesehen. Advantageously, at least two area sectors are provided for each light spectrum.
Das erfindungsgemäße LED-Modul ist beispielweise dazu ausgelegt, drei unterschiedliche Lichtspektren abzugeben. Jeweils ein Lichtspektrum wird dabei aus wenigstens zwei der flächigen Sektoren des Lichtfeldes ausgekoppelt. Dadurch kann insgesamt ein sehr homogenes und farbtreues Mischlicht, insbesondere Weißlicht, von dem LED-Modul erzeugt werden. The LED module according to the invention is designed, for example, to emit three different light spectra. In each case a light spectrum is coupled out of at least two of the area sectors of the light field. As a result, a very homogeneous and color-true mixed light, in particular white light, can be generated by the LED module as a whole.
Die Außenkontur des Lichtfeldes ist bevorzugt rund. Vorteilhafterweise ist die Außenkontur des Lichtfeldes kreisförmig. Die Kreisform ist insbesondere für Leuchten von Vorteil, die Optiken mit aufgesetztem Reflektor aufweisen. The outer contour of the light field is preferably round. Advantageously, the outer contour of the light field is circular. The circular shape is particularly advantageous for lights that have optics with attached reflector.
Vorteilhafterweise sind Kreissektoren des kreisförmigen Lichtfelds zum Advantageously, circular sectors of the circular light field for
Abgeben von wenigstens einem Lichtspektrum ausgelegt. Zusätzlich können kreisförmige Inseln in dem Lichtfeld zum Abgeben von wenigstens einem anderen Lichtspektrum vorgesehen werden, die vorteilhafterweise zum Dispensing of at least one light spectrum designed. In addition, circular islands may be provided in the light field for outputting at least one other spectrum of light, which may be advantageous to
Abgeben von Licht aus dem roten Lichtspektrum ausgelegt sind. Emitting light from the red light spectrum are designed.
Sowohl die Kreissektoren als auch die kreisförmigen Inseln in dem Lichtfeld sind flächige Sektoren. Durch diese vorteilhafte Anordnung der flächigenBoth the circular sectors and the circular islands in the light field are area sectors. By this advantageous arrangement of the flat
Sektoren in dem Lichtfeld, kann beispielweise ein LED-Modul gebildet werden, das Mischlicht aus drei oder mehr verschiedenen Lichtspektren abgibt und dabei eine besonders kleine Gesamtlichtabstrahlfläche aufweist. Das Lichtfeld kann also flächenreduziert werden. Sectors in the light field, for example, an LED module can be formed which emits mixed light of three or more different light spectra and thereby has a particularly small Gesamtlichtabstrahlfläche. The light field can thus be reduced in area.
Dadurch kann zum einen ein besonders kleines Lichtfeld gebildet werden. Zum anderen ist das Lichtfeld zum Abgeben von Weißlicht einer besonders natürlichen Lichtfarbtemperatur geeignet. Die Kreissektoren sind dabei bevorzugt zum Abgeben von rotem, blauem Licht und von Licht aus einem weiteren Lichtspektrum ausgelegt, welches durch einen Leuchtstoff erzeugt wird. Dieses weitere Lichtspektrum kann beispielweise Licht aus dem grünen und/oder gelben Lichtspektrum sein. Wie oben angemerkt, können zusätzlich kreisförmige Inseln zur Abgabe von rotem Licht vorgesehen werden, so dass in diesem Fall durch die Kreissektoren kein rotes Licht mehr bereitgestellt werden müsste. As a result, on the one hand, a particularly small light field can be formed. On the other hand, the light field is suitable for emitting white light of a particularly natural light color temperature. The circular sectors are preferably designed for emitting red, blue light and light from a further light spectrum, which is generated by a phosphor. This further light spectrum can be, for example, light from the green and / or yellow light spectrum. As noted above, in addition circular islands can be provided for emitting red light, so that in this case no red light would have to be provided by the circular sectors.
Vorteilhafterweise weist das Lichtfeld einen Durchmesser von 16 mm oder weniger auf. Durch diesen im Vergleich zum Stand der Technik deutlich reduzierten Lichtfelddurchmesser ist das erfindungsgemäße LED-Modul dazu geeignet, eine Leuchte mit kleinen Reflektorgrößen umzusetzen. Vorteilhafterweise weist das LED-Modul ferner eine Lichtstreuscheibe auf, die in einem Abstand zum Lichtfeld in Lichtabstrahlrichtung des Lichtfeldes angeordnet ist. Advantageously, the light field has a diameter of 16 mm or less. By this compared to the prior art significantly reduced light field diameter, the LED module according to the invention is adapted to implement a lamp with small reflector sizes. Advantageously, the LED module further comprises a light diffusion plate, which is arranged at a distance from the light field in the light emission direction of the light field.
Die Lichtstreuscheibe verleiht dem LED-Modul einen homogeneren The light diffuser gives the LED module a more homogeneous
Farbeindruck, d.h. durch die Streuung des Lichts wird die Vermischung der unterschiedlichen Lichtspektren, die von dem Lichtfeld abgegeben werden, verbessert. Die Lichtstreuscheibe ermöglicht es ferner, ein diffuses Licht zu erzeugen und die Helligkeit des LED-Moduls einzustellen. Die Color impression, i. the scattering of the light improves the mixing of the different light spectra emitted by the light field. The light diffuser also makes it possible to generate a diffused light and adjust the brightness of the LED module. The
Lichtstreuscheibe kann zusätzlich mit einem Leuchtstoff versehen sein, beispielweise mit einer zusätzlichen Leuchtstoffschicht oder eingebetteten Leuchtstoff partikeln. Die Streuscheibe ist dann dazu geeignet die Farbe oder Farbtemperatur des von dem LED-Modul insgesamt abgegebenen Lichts zu beeinflussen. Vorteilhafterweise ist die Streuscheibe durch eine Mischkammer von der Oberseite des Lichtfeldes getrennt. Lichtstreuscheibe may additionally be provided with a phosphor, for example with an additional phosphor layer or embedded phosphor particles. The diffuser is then suitable for influencing the color or color temperature of the light emitted by the LED module as a whole. Advantageously, the lens is separated by a mixing chamber from the top of the light field.
Die Mischkammer sorgt vorzugsweise für eine besonders effektive The mixing chamber preferably ensures a particularly effective
Vermischung der unterschiedlichen Lichtspektren, die von den flächigen Sektoren des Lichtfeldes ausgestrahlt werden. Für einen Betrachter des LED- Moduls ist dann ein sehr homogenes Mischlicht sichtbar. Die einzelnen flächigen Sektoren des Lichtfeldes bzw. die davon ausgesandten Mixing of the different light spectra, which are emitted by the flat sectors of the light field. For a viewer of the LED module then a very homogeneous mixed light is visible. The individual area sectors of the light field or the emitted thereof
unterschiedlichen Lichtspektren sind vorzugsweise von außen für einen Betrachter nicht zu erkennen. different light spectra are preferably not visible from the outside for a viewer.
Vorteilhafterweise ist das Lichtfeld mit den flächigen Sektoren durch Dämmen und Füllen hergestellt. Durch diese auch als„dam-and-fiU" Verfahren bezeichnete Methode können besonders einfach die flächigen Sektoren des Lichtfeldes hergestellt werden. Die Methode ermöglicht ein deutlich kleineres Lichtfeld, als es mit der bekannten Glob Top Methode zu erreichen ist. Die flächigen Sektoren können ein Fertigbauteil sein, das auf einer Modulplatte des LED-Moduls angebracht wird. Advantageously, the light field is made with the planar sectors by dams and filling. This method, also known as the "dam-and-fiU" method, makes it particularly easy to produce the two-dimensional sectors of the light field.The method enables a much smaller light field than can be achieved with the well-known Glob Top method Prefabricated component which is mounted on a module plate of the LED module.
Vorteilhafterweise sind die flächigen Sektoren des Lichtfeldes durch Dämme voneinander getrennt. Advantageously, the planar sectors of the light field are separated from each other by dams.
Vorteilhafterweise umfassen die flächigen Sektoren des Lichtfeldes eine transparente Vergussmasse oder eine einen Leuchtstoff enthaltende Advantageously, the two-dimensional sectors of the light field comprise a transparent potting compound or a phosphor containing
Vergussmasse. Bevorzugt sind in dem erfindungsgemäßen LED-Modul die einzelnen Sektoren des Lichtfeldes durch die begrenzenden Dämme definiert und in die Sealing compound. Preferably, in the LED module according to the invention, the individual sectors of the light field are defined by the limiting dams and in the
Zwischenräume zwischen den Dämmen ist eine Vergussmasse eingefüllt, um die Sektoren flächig zu gestalten. Die Vergussmasse kann aus einer Gaps between the dams is filled with potting compound to make the sectors flat. The potting compound can from a
transparenten Vergussmasse mit zugesetztem Leuchtstoff bestehen, der beispielweise als ein darin ungelöstes Pulver oder als Leuchtstoffpartikel vorliegt. Die Vergussmasse kann auch gelöste Leuchtstoffe enthalten, d.h. sie kann eine Leuchtstoff- Vergussmasse sein. transparent potting compound with added phosphor exist, which is present for example as an undissolved powder or as phosphor particles. The potting compound may also contain dissolved phosphors, i. it can be a phosphor potting compound.
Ein Leuchtstoff ist allgemein ein Stoff, der durch Licht anregbar ist und daraufhin ein sekundäres Lichtspektrum abgibt. Ein Leuchtstoff kann deshalb ein Lichtfarbkonversionsstoff sein. Beispielweise ist der Leuchtstoff ein Phosphor oder ein fluoreszierendes Material. Bevorzugt wird durch den Leuchtstoff sekundäres Licht aus dem gelben und/ oder grünen Spektrum abgegeben. A phosphor is generally a material that is excitable by light and then emits a secondary spectrum of light. A phosphor may therefore be a light color conversion material. For example, the phosphor is a phosphor or a fluorescent material. Secondary light from the yellow and / or green spectrum is preferably emitted by the phosphor.
Vorteilhafterweise sind die flächigen Sektoren zumindest zum Abgeben von Licht aus dem roten Lichtspektrum, Licht aus dem blauen Lichtspektrum beziehungsweise Licht aus einem weiteren durch einen Leuchtstoff erzeugten Lichtspektrum ausgelegt. Die vorliegende Erfindung versteht unter Licht aus dem roten Lichtspektrum Licht einer Wellenlänge zwischen etwa 630 und 790 nm, unter Licht aus dem blauen Lichtspektrum Licht einer Wellenlänge zwischen etwa 390 bis 480 nm, unter Licht aus dem grünen Lichtspektrum Licht einer Wellenlänge zwischen etwa 480 und 560 nm und unter Licht aus dem gelben Lichtspektrum Licht einer Wellenlänge zwischen 560 und 630 nm. Advantageously, the planar sectors are designed at least for emitting light from the red light spectrum, light from the blue light spectrum or light from a further light spectrum generated by a phosphor. The present invention understands light from the red light spectrum light having a wavelength between about 630 and 790 nm, light from the blue light spectrum light having a wavelength between about 390 to 480 nm, light from the green light spectrum light having a wavelength between about 480 and 560 nm and under light from the yellow light spectrum light of a wavelength between 560 and 630 nm.
Das erfindungsgemäße LED-Modul ist dadurch zum Abgeben von Weißlicht, insbesondere von natürlich wirkendem Weißlicht, geeignet. Natürlich wirkendes Weißlicht hat bevorzugt eine Lichtfarbtemperatur, die der eines schwarzen Strahlers entspricht. The LED module according to the invention is thereby suitable for emitting white light, in particular natural-looking white light. Natural-looking white light preferably has a light color temperature that corresponds to that of a black body.
Vorteilhafterweise sind die flächigen Sektoren jeweils mit wenigstens einer LED oder einem LED-Strang versehen. Advantageously, the planar sectors are each provided with at least one LED or one LED strand.
Die wenigstens eine LED oder der wenigstens eine LED-Strang (d.h. mehrere verschaltete LEDs), sitzt bevorzugt zwischen den Dämmen der einzelnen Sektoren auf einer Modulplatte des LED-Moduls. Vorzugsweise sind die LED oder der LED-Strang mit der Vergussmasse vergossen. Dadurch werden die LEDs oder der LED-Strang fixiert und geschützt. Das von der LED oder dem LED-Strang abgegebene Licht wird von der Vergussmasse aus dem LED- Modul transportiert und dabei gegebenenfalls durch einen Leuchtstoff in der Vergussmasse beeinflusst oder konvertiert. Die LEDs können zum Beispiel blauleuchtende, rotleuchtende, grünleuchtende, gelbleuchtend oder im UV leuchtende LEDs sein. Das von einem flächigen Sektor abgegebene The at least one LED or the at least one LED string (i.e., multiple interconnected LEDs) preferably sits between the baffles of the individual sectors on a module plate of the LED module. Preferably, the LED or the LED strand are potted with the potting compound. This fixes and protects the LEDs or the LED string. The light emitted by the LED or the LED strand is transported by the potting compound from the LED module and optionally influenced or converted by a phosphor in the potting compound. The LEDs may be, for example, blue-emitting, red-luminescent, green-luminescent, yellow-emitting or UV-emitting LEDs. That delivered by a surface sector
Lichtspektrum kann durch ein Zusammenspiel zwischen wenigstens einer LED und der Vergussmasse zustande kommen, oder direkt von der wenigstens einen LED erzeugt werden. Light spectrum can come about through an interaction between at least one LED and the potting compound, or be generated directly from the at least one LED.
Die vorliegende Erfindung betrifft ferner ein Verfahren zur Herstellung eines LED -Moduls zur Abgabe von Mischlicht, vorzugsweise Weißlicht, das die Schritte aufweist: Erzeugen eines Lichtfeldes, das in flächige Sektoren unterteilt ist, durch Ausbilden von Dämmen, welche Sektoren des Lichtfeldes voneinander trennen, und Einfüllen einer transparenten Vergussmasse oder einer einen Leuchtstoff enthaltenden Vergussmasse zwischen die Dämme eines jeden Sektors. Durch das erfmdungsgemäße Verfahren kann ein LED-Modul mit The present invention further relates to a method for producing an LED module for emitting mixed light, preferably white light, comprising the steps of: generating a light field which is subdivided into area sectors by forming dams, which sectors of the light field Separate, and filling a transparent potting compound or a phosphor-containing potting compound between the dams of each sector. By erfmdungsgemäße method, an LED module with
flächenverringertem Lichtfeld hergestellt werden. Die verkleinerte Fläche des Lichtfeldes ist nicht durch ein herkömmliches Glob Top Verfahren erreichbar. area-reduced light field are produced. The reduced area of the light field can not be achieved by a conventional Glob Top method.
Die vorliegende Erfindung betrifft ferner eine Leuchtvorrichtung, die wenigstens ein LED-Modul wie oben beschrieben und vorzugsweise einen auf das LED-Modul gesetzten Reflektor aufweist. The present invention further relates to a lighting device having at least one LED module as described above and preferably a reflector set on the LED module.
Die Leuchte ist insbesondere für kleine Reflektorgrößen ausgelegt. Dazu ist das erfindungsgemäße LED-Modul, insbesondere dessen flächenreduziertes Lichtfeld eine notwendige Voraussetzung. The luminaire is designed especially for small reflector sizes. For this purpose, the LED module according to the invention, in particular its area-reduced light field is a necessary prerequisite.
Die vorliegende Erfindung wird nun noch detaillierter mit Bezug auf die beigefügten Zeichnungen beschrieben. Fig. la und lb zeigen ein LED-Modul, das aus dem Stand der Technik bekannt ist. The present invention will now be described in more detail with reference to the accompanying drawings. Figures la and lb show an LED module known in the art.
Die Fig. 2a und 2a zeigen ein erstes LED-Modul gemäß der vorliegenden Erfindung. Figures 2a and 2a show a first LED module according to the present invention.
Die Fig. 3 zeigt eine alternative Ausgestaltung eines Lichtfelds für LED- Moduls gemäß der vorliegenden Erfindung. Fig. 3 shows an alternative embodiment of a light field for LED module according to the present invention.
Die Fig. 4 zeigt eine weitere alternative Ausgestaltung eines Lichtfelds für ein LED-Modul gemäß der vorliegenden Erfindung. FIG. 4 shows a further alternative embodiment of a light field for an LED module according to the present invention.
Die Fig. 5 zeigt das in Fig. 4 dargestellte Lichtfeld nochmals, wobei in Fig. 5 die jeweiligen LED-Stränge und deren Verschaltung angedeutet sind. Die Fig. 2a zeigt eine dreidimensionale seitliche Ansicht eines ersten Ausführungsbeispiels eines erfindungsgemäßen LED-Moduls l. Das LED- Modul l ist zur Abgabe von Mischlicht, beispielsweise zur Abgabe von Weißlicht, geeignet. Dazu werden in dem LED-Modul l verschiedene abgegebene Lichtspektren derart gemischt dass als Gesamteindruck für einen Betrachter das Mischlicht oder das Weißlicht des LED-Moduls l entsteht. Fig. 5 shows the light field shown in Fig. 4 again, in Fig. 5, the respective LED strands and their interconnection are indicated. FIG. 2a shows a three-dimensional lateral view of a first exemplary embodiment of an LED module 1 according to the invention. The LED module 1 is suitable for emitting mixed light, for example for emitting white light. For this purpose, different emitted light spectra are mixed in the LED module l in such a way that the mixed light or the white light of the LED module 1 is produced as an overall impression for a viewer.
Das erfindungsgemäße LED-Modul l weist eine Modulplatte 7 auf, auf der wenigstens ein Lichtfeld 2 angeordnet ist, das zur Abgabe des Lichts des LED-Moduls 1 ausgelegt ist. Das Lichtfeld 2 strahlt das Licht aus seiner flächigen Oberfläche ab. Ferner sind vorteilhafter Weise auf der The LED module 1 according to the invention has a module plate 7, on which at least one light field 2 is arranged, which is designed to emit the light of the LED module 1. The light field 2 emits the light from its surface area. Furthermore, are advantageously on the
Modulplatte 7 noch weitere Komponenten 8 angeordnet. Diese weiteren Komponenten 8 können beispielweise elektronische Komponenten sein wie Ansteuerungskomponenten, Mikroprozessoren, Kapazitäten, Module plate 7 even more components 8 are arranged. These further components 8 may be, for example, electronic components such as drive components, microprocessors, capacities,
Induktivitäten, Widerstände, elektrische Zuleitungen oder dergleichen. Die elektronischen Komponenten können LEDs 6 oder LED-Stränge des LED- Moduls 1 mit Energie versorgen und/oder steuern. Die weiteren  Inductors, resistors, electrical leads or the like. The electronic components can supply and / or control LEDs 6 or LED strings of the LED module 1 with energy. The others
Komponenten 8 können auch Kühlelemente zum Abführen von Wärme von der Modulplatte 7 bzw. dem Lichtfeld 2 enthalten. Ferner kann die Components 8 may also include cooling elements for dissipating heat from the module plate 7 and the light field 2, respectively. Furthermore, the
Modulplatte 7 mit Anbringungsmitteln zum Anbringen des LED-Moduls 1 in beispielweise einem Leuchtengehäuse versehen sein. Beispielsweise weist die Modulplatte 7 wie in Fig. la gezeigt Löcher zum Anschrauben des LED- Moduls 1 auf. Die Modulplatte 7 kann beispielsweise eine Leiterplatte wie ein Printed Circuit Board (PCB) sein. Die Modulplatte 7 ist vorteilhafter Weise wenigstens teilweise aus einem Material gebildet, das zur  Module plate 7 to be provided with attachment means for attaching the LED module 1 in example, a light housing. For example, as shown in FIG. 1 a, the module plate 7 has holes for screwing on the LED module 1. The module plate 7 may be, for example, a printed circuit board such as a printed circuit board (PCB). The module plate 7 is advantageously at least partially formed from a material which is used for
Wärmeabfuhr geeignet ist. Heat dissipation is suitable.
Das Lichtfeld 2 des LED-Moduls 1 ist in mehrere flächige Sektoren 3a, 3b, 3c unterteilt. Jeder der Sektoren 3a, 3b, 3c ist zur Abgabe von Licht aus einem bestimmten Lichtspektrum ausgelegt. Das Lichtfeld 2 umfasst vorzugsweise wenigstens eine erste Art von Sektoren 3a, die Licht aus einem ersten Lichtspektrum abgeben, und eine zweite Art von Sektoren 3b, die Licht aus einem zweiten Lichtspektrum abgeben. Vorzugsweise umfasst das Lichtfeld 2 auch eine dritte Art von Sektoren 3c, die Licht aus einem dritten Lichtspektrum abgeben. Natürlich können auch mehr verschiedene Arten von Sektoren verwendet werden, die insgesamt vier oder sogar mehr verschiedene Lichtspektren abgeben. The light field 2 of the LED module 1 is subdivided into a plurality of areal sectors 3a, 3b, 3c. Each of the sectors 3a, 3b, 3c is designed to emit light from a specific light spectrum. The light field 2 preferably comprises at least a first type of sectors 3a, which emit light from a first light spectrum, and a second type of sectors 3b, which emit light from a second light spectrum. Preferably, this includes Light field 2 is also a third type of sectors 3c, which emit light from a third light spectrum. Of course, more different types of sectors can be used, giving off altogether four or even more different light spectra.
Für jedes abgegebene Lichtspektrum umfasst das Lichtfeld 2 vorzugsweise wenigstens zwei Sektoren 3 a, 3b, 3 c. Um Weißlicht als das Mischlicht zu erzeugen, kann das Lichtfeld 2 beispielsweise eine erste Art von Sektoren 3a umfassen, die Licht aus einem blauen Lichtspektrum abgeben, eine zweite Art von Sektoren 3b umfassen, die Licht aus einem roten Lichtspektrum abgeben, und eine dritte Art von Sektoren 3c umfassen, die Licht aus einem weiteren Lichtspektrum abgeben, das von einem Leuchtstoff wie For each emitted light spectrum, the light field 2 preferably comprises at least two sectors 3 a, 3 b, 3 c. For example, to generate white light as the mixed light, the light field 2 may include a first type of sectors 3a that emit light from a blue light spectrum, a second kind of sectors 3b that emit light from a red light spectrum, and a third kind of Sectors 3c, which emit light from a further spectrum of light that of a phosphor such
beispielsweise einem Phosphor erzeugt wird. Dieses weitere Lichtspektrum umfasst vorteilhafterweise das grüne und/oder gelbe Lichtspektrum. for example, a phosphor is generated. This further light spectrum advantageously comprises the green and / or yellow light spectrum.
Dadurch, dass in dem erfindungsgemäßen LED-Modul 2 die verschiedenen Bereiche des Lichtfeldes 2, welche unterschiedliche Lichtspektren abgeben, nicht durch Lichtpunkte sondern durch flächige Sektoren 3a, 3b, 3c gebildet werden, ist eine Verringerung der Gesamtfläche des Lichtfeldes 2 möglich. Die Gesamtlichtabstrahlfläche des LED-Moduls 1 kann also reduziert werden. Due to the fact that in the LED module 2 according to the invention the different regions of the light field 2 which emit different light spectra are not formed by light points but by area sectors 3a, 3b, 3c, a reduction of the total area of the light field 2 is possible. The total light emission surface of the LED module 1 can therefore be reduced.
Vorzugsweise ist, wie in Fig. 2a und 2b gezeigt, das Lichtfeld 2 rund. Preferably, as shown in Figs. 2a and 2b, the light field 2 is round.
Insbesondere besitzt das Lichtfeld 2 am meisten bevorzugt eine In particular, the light field 2 most preferably has one
kreisförmige Außenkontur, kann aber auch oval, ellipsenförmig oder dergleichen sein. Der Durchmesser des Lichtfelds 2 beträgt vorzugsweise 16 mm oder sogar weniger. Die Fläche des Lichtfelds 2 kann etwa 200 mm2 oder weniger betragen und ist im Vergleich zum Stand der Technik um 16 % verringert. Das kreisförmige Lichtfeld 2 weist, wie in Fig. 2a gezeigt, vorzugsweise eine Unterteilung in verschiedene Arten von Kreissektoren 3a bzw. 3b auf. circular outer contour, but may also be oval, elliptical or the like. The diameter of the light field 2 is preferably 16 mm or even less. The area of the light field 2 may be about 200 mm 2 or less and is reduced by 16% in comparison with the prior art. As shown in FIG. 2a, the circular light field 2 preferably has a subdivision into different types of circular sectors 3a and 3b.
Vorzugsweise weist das Lichtfeld 2 wie in Fig. 2a gezeigt ferner mehrerer kreisförmige Inseln 3c auf, die innerhalb der Außenkontur des Lichtfeldes 2 angeordnet sind. Beispielsweise kann, wie in der Fig. 2a gezeigt, eine kreisförmige Insel 3c die Mitte des Lichtfeldes 2 bilden, d.h. zum Beispiel den Mittelpunkt der kreisförmigen Außenkontur bilden. Zusätzlich können weitere kreisförmige Inseln 3c beispielweise in regelmäßigen Abständen dem Umfang des Liehtfeldes 2 entlang angeordnet sein. In einem As shown in FIG. 2 a, the light field 2 preferably also has a plurality of circular islands 3 c which are located within the outer contour of the light field 2 are arranged. For example, as shown in Fig. 2a, a circular island 3c may form the center of the light field 2, ie, for example, may form the center of the circular outer contour. In addition, further circular islands 3c may for example be arranged at regular intervals along the circumference of the Liehtfeldes 2. In one
bevorzugten Beispiel weist das Lichtfeld 2, wie in Fig. 2a gezeigt, insgesamt acht Kreissektoren 3a bzw. 3b auf. Allerdings kann die innere Aufteilung der flächigen Sektoren 3a, 3b, 3c des Lichtfeldes 2 auch andere Formen aufweisen als hier dargestellt sind (vgl. beispielsweise Fig. 3). preferred example, the light field 2, as shown in Fig. 2a, a total of eight circular sectors 3a and 3b. However, the inner division of the planar sectors 3a, 3b, 3c of the light field 2 can also have other shapes than those shown here (cf., for example, FIG. 3).
Vorzugsweise sind die kreisförmigen Inseln 3 c zum Abgeben von Licht aus dem roten Spektrum vorgesehen. Die echten Kreissektoren 3a bzw. 3b sind vorzugsweise zum Abgeben von Licht aus dem blauen und/oder einem weiteren Lichtspektrum, das beispielsweise von einem Phosphor erzeugt wird, vorgesehen. Durch eine Auswahl der Durchmesser der kreisförmigen Inseln 3c und/oder der Flächen der Kreissektoren 3a bzw. 3b während des Herstellungsprozesses des LED-Moduls 1, kann die Farbe des LED-Moduls 1 bzw. dessen Farbtemperatur festgelegt werden. Die flächigen Sektoren 3a, 3b, 3c des Lichtfeldes 2 werden vorzugsweise durch Dämmen und Füllen gebildet. Dazu werden in einem ersten Schritt Dämme 5 auf der Modulplatte 7 des LED -Moduls ausgebildet, die die spätere Struktur der Sektoren 3a, 3b, 3c festlegen. Durch einen Damm 5 wird dabei die Außenkontur des Lichtfeldes 2 gebildet. Zur Unterteilung Sektoren 3a, 3b, 3c werden beispielweise geradlinige oder gebogene Dämme 5 innerhalb der Außenkontur des Lichtfeldes 2 gezogen. Zur Bildung von kreisförmigen Inseln können kreisförmige Dämme 5 innerhalb der Preferably, the circular islands 3 c are provided for emitting light from the red spectrum. The true circular sectors 3a and 3b are preferably provided for emitting light from the blue and / or a further light spectrum, which is generated for example by a phosphor. By selecting the diameters of the circular islands 3c and / or the surfaces of the circular sectors 3a and 3b during the manufacturing process of the LED module 1, the color of the LED module 1 or its color temperature can be set. The planar sectors 3a, 3b, 3c of the light field 2 are preferably formed by dams and filling. For this purpose, dams 5 are formed on the module plate 7 of the LED module in a first step, which determine the subsequent structure of the sectors 3a, 3b, 3c. By a dam 5 while the outer contour of the light field 2 is formed. For subdivision sectors 3a, 3b, 3c, for example rectilinear or curved dams 5 are drawn within the outer contour of the light field 2. For the formation of circular islands circular dams 5 within the
Außenkontur des Lichtfeldes 2 gebildet werden. Sobald die Dämme 5 auf der Modulplatte 7 ausgebildet sind, werden die dadurch festgelegten Zwischenräume gefüllt. Die Füllung erfolgt entweder mit einer transparenten Vergussmasse oder mit einer Vergussmasse, die mit einem Leuchtstoff, beispielsweise mit Phosphorpartikeln, versehen ist. Leuchtstoffpartikel können in der Vergussmasse als pulverförmiger Leuchtstoff vorgesehen sein. Auch die Vergussmasse selbst kann Outer contour of the light field 2 are formed. Once the dams 5 are formed on the module plate 7, the spaces defined thereby are filled. The filling is carried out either with a transparent potting compound or with a potting compound which is provided with a phosphor, for example with phosphor particles. Phosphor particles may be in the potting compound as a powder Be provided phosphor. Even the potting compound itself can
lichtkonvertierende Eigenschaften aufweisen. Ein Leuchtstoff zeichnet sich generell dadurch aus, dass er von Licht einer LED 6 angeregt werden kann und daraufhin ein Sekundärlichtspektrum abgibt. have light-converting properties. A phosphor is generally characterized in that it can be excited by the light of an LED 6 and then emits a secondary light spectrum.
In jedem flächigen Sektor 3a, 3b, 3c wird vorzugsweise vor dem Schritt des Füllens wenigstens eine LED 6 bzw. ein LED-Strang angeordnet. Diese können aber auch schon zuvor in die Modulplatte 7 eingelassen worden sein und die Sektoren 3a, 3b, 3c werden folglich über den LEDs 6 ausgebildet. Die Dämme 5 können auch um auf der Modulplatte 7 angeordnete LEDs 6 bzw. LED-Stränge herum ausgebildet werden. Die LEDs 6 bzw. LED- Stränge werden vorzugsweise von der Vergussmasse, die zwischen die Dämme 5 gefüllt wird, umschlossen. Die LEDs 6 oder LED-Stränge sind über die Modulplatte 7 mit Strom versorg und vorzugsweise ansteuerbar. In each planar sector 3a, 3b, 3c, at least one LED 6 or an LED string is preferably arranged before the filling step. However, these can also be previously embedded in the module plate 7 and the sectors 3a, 3b, 3c are thus formed on the LEDs 6. The dams 5 can also be formed around arranged on the module plate 7 LEDs 6 and LED strands around. The LEDs 6 or LED strands are preferably enclosed by the potting compound, which is filled between the dams 5. The LEDs 6 or LED strands are on the module plate 7 with power supply and preferably controllable.
Diejenigen Sektoren 3a, 3b, 3c, die mit einer transparenten Vergussmasse gefüllt sind, sind dazu ausgelegt, von einer oder mehreren LEDs 6 abgegebenes Licht unverändert abzugeben. Beispielsweise kann von solchen Sektoren 3a, 3b, 3c rotes und/oder blaues Licht von einer rotleuchtenden und/oder blauleuchtenden LED 6 abgegeben werden. Diejenigen Sektoren 3a, 3b, 3c, die mit einer einen Leuchtstoff enthaltenden Vergussmasse gefüllt sind, sind hingegen dazu ausgelegt, von einer oder mehreren LEDs 6 abgegebenes Licht verändert abzugeben. Dies geschieht beispielsweise dadurch, dass das Licht dieser LEDs 6 den Leuchtstoff in der Vergussmasse anregt, wodurch von diesem ein Sekundärlichtspektrum abgegeben wird. Beispielsweise kann dadurch gelbes Licht oder grünes Licht erzeugt und abgegeben werden. Those sectors 3a, 3b, 3c which are filled with a transparent potting compound are designed to emit light emitted by one or more LEDs 6 unchanged. For example, of such sectors 3a, 3b, 3c, red and / or blue light can be emitted by a red-emitting and / or blue-emitting LED 6. Those sectors 3a, 3b, 3c which are filled with a potting compound containing a phosphor, on the other hand, are adapted to emit light emitted by one or more LEDs 6 in a changed manner. This happens, for example, in that the light of these LEDs 6 excites the phosphor in the potting compound, whereby a secondary light spectrum is emitted from this. For example, yellow light or green light can thereby be generated and emitted.
In dem Lichtfeld 2 des erfindungsgemäßen LED-Moduls 1 kann jeder flächige Sektor 3a, 3b, 3c mit einer Vergussmasse versehen sein, die das Licht der eingeschlossenen LED 6 verändern kann oder aber nur einige der Sektoren 3a, 3b, 3c. Es ist sogar möglich, dass jeder einzelne Sektor 3a, 3b, 3c des Lichtfeldes 2 selbst dazu ausgelegt ist, ein Weißlicht zu erzeugen. Beispielsweise kann dazu in jedem Sektor 3a, 3b, 3c eine blau leuchtende LED 6 eingesetzt sein, und kann für jeden Sektor eine andere Leuchtstoff - Vergussmasse als Füllung verwendet sein. Dadurch wird ein Weißlicht durch eine Kombination von drei verschiedenen Weißlichten erzeugt und es kann eine besonders natürliche Farbtemperatur erreicht werden. In the light field 2 of the LED module 1 according to the invention, each planar sector 3a, 3b, 3c may be provided with a potting compound that can change the light of the enclosed LED 6 or only some of the sectors 3a, 3b, 3c. It is even possible that each individual sector 3a, 3b, 3c of the light field 2 itself is designed to produce a white light. For example, in each sector 3a, 3b, 3c, a blue luminous LED 6 can be used, and can be used for each sector, a different phosphor potting compound as a filling. As a result, a white light is generated by a combination of three different white lights and it can be achieved a particularly natural color temperature.
Die LEDs 6 bzw. LED-Stränge in den verschiedenen Sektoren 3a, 3b, 3c des Lichtfeldes 2 können einzeln oder gemeinsam derart ansteuerbar sein, dass ihre Leuchtfarbe durch die Ansteuerung veränderbar ist. Ferner kann vorzugsweise jede LED 6 oder LED-Strecke einzeln gedimmt werden, beispielsweise mittels Pulsbreiten-Modulation. The LEDs 6 or LED strands in the various sectors 3 a, 3 b, 3 c of the light field 2 may be individually or jointly controllable such that their luminous color is variable by the control. Furthermore, preferably each LED 6 or LED track can be dimmed individually, for example by means of pulse width modulation.
Fig. 2b zeigt eine Draufsicht auf das LED-Modul 1. Wie gezeigt kann vor der Lichtabstrahlfläche des Lichtfeldes 2 eine Streuscheibe 4 angeordnet sein, die hier als gestrichelter Kreis dargestellt ist. Die Streuscheibe 4 besitzt wenigstens denselben Durchmesser wie das Lichtfeld 2, vorzugsweise einen größeren Durchmesser. Die Streuscheibe 4 kann mit Streupartikeln versehen sein, die derart gewählt sind, dass sie das von dem Lichtfeld 2 abgegebene Licht streuen. Dazu weisen die Streupartikel eine Korngröße auf, die etwa der Wellenlänge der abgegebenen Lichtspektren entspricht. Vorzugsweise ist die Streuscheibe 4 von der Oberseite des Lichtfeldes 2 beabstandet angeordnet. 2b shows a plan view of the LED module 1. As shown, in front of the light emitting surface of the light field 2, a lens 4 may be arranged, which is shown here as a dashed circle. The diffuser 4 has at least the same diameter as the light field 2, preferably a larger diameter. The diffusing screen 4 may be provided with scattering particles which are selected such that they scatter the light emitted by the light field 2. For this purpose, the scattering particles have a particle size which corresponds approximately to the wavelength of the emitted light spectra. Preferably, the lens 4 is spaced from the top of the light field 2.
Zwischen der Oberseite des Lichtfeldes 2 und der Streuscheibe 4 ist vorzugsweise eine sogenannte Mischkammer vorhanden. Im einfachsten Fall ist die Mischkammer lediglich ein Freiraum zwischen dem Lichtfeld 2 und der Streuscheine 4. Die Mischkammer ist aber vorzugsweise dazu ausgelegt, eine effektive Durchmischung der verschiedenen Lichtspektren, die vom Lichtfeld 2 abgegeben werden, zu erzielen. Dazu können in der Mischkammer zum Beispiel optische Elemente vorgesehen sein. Optische Elemente sind beispielsweise Linsen oder Reflektoren. Die Mischkammer kann aber auch ein solider Block aus einem Material sein, das einen hohen Brechungsindex, beispielweise von 1,5 oder mehr aufweist. Insgesamt wird durch die Mischkammer und die Streuscheibe 4 zusammen erreicht, dass die einzelnen Lichtspektren, die von den verschiedenen flächigen Sektoren 3a, 3b, 3c des Lichtfeldes 2 abgegeben werden, nicht mehr von einem Between the upper side of the light field 2 and the diffusing screen 4, a so-called mixing chamber is preferably present. In the simplest case, the mixing chamber is merely a free space between the light field 2 and the diffuser 4. The mixing chamber is, however, preferably designed to achieve an effective mixing of the different light spectra emitted by the light field 2. For this purpose, optical elements may be provided in the mixing chamber, for example. Optical elements are, for example, lenses or reflectors. However, the mixing chamber may also be a solid block of a material having a high refractive index, for example, of 1.5 or more. Overall, it is achieved by the mixing chamber and the diffuser 4 together that the individual light spectra from the different area sectors 3a, 3b, 3c of the light field 2 are emitted, no longer from one
Betrachter des LED-Moduls 1 unterscheidbar sind, sondern als homogenes Mischlicht, vorzugsweise homogenes Weißlicht, erscheinen. Die Fig. 3 zeigt eine alternative Ausgestaltung eines Lichtfelds 2' für ein LED-Modul gemäß der vorliegenden Erfindung. Viewers of the LED module 1 are distinguishable, but appear as a homogeneous mixed light, preferably homogeneous white light. FIG. 3 shows an alternative embodiment of a light field 2 'for an LED module according to the present invention.
Im Unterschied zum in den Figuren 2a und 2b gezeigten Lichtfeld 2, umfasst das Lichtfeld 2' keine kreisförmigen Inseln 3c, sondern jeweils nur einen Kreissektor 3a', 3V und 3' zur Abgabe von Licht aus einem In contrast to the light field 2 shown in FIGS. 2 a and 2 b, the light field 2 'comprises no circular islands 3 c but only one circular sector 3 a', 3 V and 3 'for emitting light from one
bestimmten Lichtspektrum. Das Lichtfeld 2' umfasst dabei einen ersten Sektor 3a, der Licht aus einem ersten Lichtspektrum, einen zweiten Sektor 3b, der Licht aus einem zweiten Lichtspektrum und einen dritten Sektor 3c, der Licht aus einem dritten Lichtspektrum abgeben kann. certain light spectrum. The light field 2 'comprises a first sector 3a, the light from a first light spectrum, a second sector 3b, the light from a second light spectrum and a third sector 3c, which can emit light from a third light spectrum.
Die Fig. 4 zeigt eine weitere alternative Ausgestaltung eines Lichtfelds 2" für ein LED-Modul gemäß der vorliegenden Erfindung. Wiederum umfasst das Lichtfeld 2" keine kreisförmigen Inseln 3c, sondern jeweils verschiedene Sektoren 3a", 3b" und 3c". Dabei umfasst das Lichtfeld 2"eine erste Art von Sektoren 3a", die Licht aus einem ersten Lichtspektrum, eine zweite Art von Sektoren 3b", die Licht aus einem zweiten Lichtspektrum und eine dritte Art von Sektoren 3c", die Licht aus einem dritten Lichtspektrum abgeben können. Die Fig. 5 zeigt das in Fig. 4 dargestellte Lichtfeld 2" nochmals, wobei in Fig. 5 die jeweiligen LED-Stränge 6" und deren Verschaltung angedeutet sind. Wie in Fig. 5 gut zu erkennen, sind die Anschlussleitungen 7" vorzugsweise im Bereich zwischen den jeweiligen Sektoren 3a", 3b", 3c" vorgesehen. Der bevorzugte Schichtaufbau eines Trägersubstrats für ein 4 shows a further alternative embodiment of a light field 2 "for an LED module according to the present invention: Again, the light field 2" does not comprise circular islands 3c but respectively different sectors 3a ", 3b" and 3c " Light field 2 "a first type of sectors 3a", the light from a first light spectrum, a second type of sectors 3b ", the light from a second light spectrum and a third type of sectors 3c", which can emit light from a third light spectrum. 5 again shows the light field 2 "illustrated in FIG. 4, the respective LED strands 6" and their interconnection being indicated in FIG. 5. As can easily be seen in FIG. 5, the connecting leads 7 "are preferably in the The area between the respective sectors 3a ", 3b", 3c "provided. The preferred layer structure of a carrier substrate for a
erfindungsgemäßes Lichtfeldes 2, 2', 2" umfasst dabei von der Unterseite zur Oberseite vorzugsweise folgende Schichten: eine hoch reflektierende Aluminiumschicht, eine Klebeschicht, eine FR4-Schicht, eine elektrisch leitende Kupferschicht, eine Lötstoppschicht („Soldermask"), eine Schutzschicht. The light field 2, 2 ', 2 "according to the invention preferably comprises the following layers from the bottom to the top: a highly reflective aluminum layer, an adhesive layer, an FR4 layer, an electrical one conductive copper layer, a solder mask ("solder mask"), a protective layer.
Das erfindungsgemäße Herstellungsverfahren des LED-Moduls 1 und das LED-Modul 1 selbst ermöglichen es eine Leuchtvorrichtung herzustellen, die das LED-Modul 1 und vorzugsweise einen aufgesetzten Reflektor aufweist. Da die vorliegende Erfindung eine Verkleinerung des The manufacturing method according to the invention of the LED module 1 and the LED module 1 itself make it possible to produce a lighting device having the LED module 1 and preferably an attached reflector. Since the present invention is a reduction of the
Durchmessers des Lichtfeldes 2, 2!, 2" ermöglicht, ist das LED-Modul 1 insbesondere vorteilhaft für eine Leuchtenoptik mit einem aufgesetzten Reflektor. Diameter of the light field 2, 2 !, 2 "allows the LED module 1 is particularly advantageous for a luminaire optics with an attached reflector.

Claims

Ansprüche claims
LED-Modul (1) zur Abgabe von Mischlicht, vorzugsweise von Weißlicht, das aufweist LED module (1) for emitting mixed light, preferably white light, comprising
ein Lichtfeld (2; 2'; 2"), das in mehrere Bereiche zum Abgeben von unterschiedlichen Lichtspektren unterteilt ist, a light field (2; 2 '; 2 ") which is subdivided into a plurality of regions for outputting different light spectra,
wobei die Bereiche des Lichtfeldes (2; 2'; 2") flächige Sektoren (3a, 3b, 3c; 3a1, 3 (, 3c'; 3a", 3b", 3c") sind. wherein the regions of the light field (2; 2 '; 2 ") are areal sectors (3a, 3b, 3c; 3a 1 , 3 ( , 3c';3a", 3b ", 3c").
LED-Modul (1) gemäß Anspruch i, wobei für jedes Lichtspektrum wenigstens zwei flächige Sektoren (3a, 3b, 3c; 3a'} 3b', 3c'; 3a", 3b", 3c") vorgesehen sind. LED module (1) according to claim i, wherein at least two planar sectors (3a, 3b, 3c; 3a ' ) 3b', 3c '; 3a ", 3b", 3c ") are provided for each light spectrum.
LED-Modul (1) gemäß Anspruch 1 oder 2, wobei die Außenkontur des Lichtfeldes (2; 2'; 2") kreisförmig ist. The LED module (1) according to claim 1 or 2, wherein the outer contour of the light field (2; 2 '; 2 ") is circular.
LED-Modul (1) gemäß Anspruch 3, wobei Kreissektoren (3a, 3b) des kreisförmigen Lichtfelds (2) zum Abgeben von wenigstens einem LED module (1) according to claim 3, wherein circular sectors (3a, 3b) of the circular light field (2) for discharging at least one
Lichtspektrum ausgelegt sind, während kreisförmige Inseln (3c) in dem Lichtfeld (2) zum Abgeben von wenigstens einem anderen 3c) in the light field (2) for emitting at least one other
Lichtspektrum ausgelegt sind. Light spectrum are designed.
LED-Modul (1) gemäß Anspruch 4, wobei die kreisförmigen Inseln (3c) zum Abgeben von Licht aus dem roten Lichtspektrum ausgelegt sind. The LED module (1) according to claim 4, wherein the circular islands (3c) are adapted to emit light from the red light spectrum.
LED-Modul (1) gemäß einem der Ansprüche 1 bis 5, wobei das Lichtfeld (2; 2'; 2") einen Durchmesser von 16 mm oder weniger aufweist. The LED module (1) according to any one of claims 1 to 5, wherein the light field (2; 2 '; 2 ") has a diameter of 16 mm or less.
LED -Modul (1) gemäß einem der Ansprüche 1 bis 6, das ferner eine Lichtstreuscheibe (4) aufweist, die in einem Abstand zum Lichtfeld (2; 2'; 2") in Lichtabstrahlrichtung des Lichtfeldes (2; 2'; 2") angeordnet ist. LED-Modul (1) gemäß Anspruch 7, wobei die Streuscheibe (4) durch eine Mischkammer von der Oberseite des Lichtfeldes (2; 2'; 2") getrennt ist. LED module (1) according to one of Claims 1 to 6, which furthermore has a light diffusion plate (4) which is at a distance from the light field (2; 2 '; 2 ") in the light emission direction of the light field (2; 2';2"). ) is arranged. LED module (1) according to claim 7, wherein the diffusing screen (4) is separated from the upper side of the light field (2; 2 '; 2 ") by a mixing chamber.
LED-Modul (1) gemäß einem der Ansprüche 1 bis 8, wobei das Lichtfeld (2; 2.'; 2") mit den flächigen Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") durch Dämmen und Füllen hergestellt ist. LED module (1) according to one of claims 1 to 8, wherein the light field (2; 2 '; 2 ") with the planar sectors (3a, 3b, 3c; 3a', 3b ', 3c'; 3a", 3b ", 3c") is produced by insulation and filling.
LED-Modul (1) gemäß einem der Ansprüche 1 bis 9, wobei die flächigen Sektoren (3a, 3b, 3c; 3a1, 3b1, 3cc; 3a", 3b", 3c") des Lichtfeldes (2 2'; 2") durch Dämme (5) voneinander getrennt sind. LED module (1) according to one of claims 1 to 9, wherein the planar sectors (3a, 3b, 3c; 3a 1 , 3b 1 , 3c c ; 3a ", 3b", 3c ") of the light field (2 2 '; 2 ") are separated by dams (5).
LED-Modul gemäß einem der Ansprüche 1 bis 10, wobei die flächigen Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") des Lichtfeldes (2; 2'; 2") eine transparente Vergussmasse oder eine Leuchtstoff enthaltende Vergussmasse umfassen. LED module according to one of claims 1 to 10, wherein the planar sectors (3a, 3b, 3c; 3a ', 3b', 3c '; 3a ", 3b", 3c ") of the light field (2; 2'; 2" ) comprise a transparent potting compound or a potting compound containing phosphor.
LED-Modul gemäß einem der Ansprüche 1 bis 11, wobei die flächigen Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") zumindest zum Abgeben von Licht aus dem roten Lichtspektrum, Licht aus dem blauen LED module according to one of claims 1 to 11, wherein the planar sectors (3a, 3b, 3c; 3a ', 3b', 3c '; 3a ", 3b", 3c ") at least for emitting light from the red light spectrum, Light from the blue
Lichtspektrum beziehungsweise Licht aus einem weiteren durch einen Phosphor erzeugten Lichtspektrum ausgelegt sind. Light spectrum or light from a further light spectrum generated by a phosphor are designed.
LED-Modul gemäß einem der Ansprüche 1 bis 11, wobei die flächigen Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") jeweils mit wenigstens einer LED (6) oder einem LED-Strang versehen sind. LED module according to one of claims 1 to 11, wherein the planar sectors (3a, 3b, 3c, 3a ', 3b', 3c ', 3a ", 3b", 3c ") each with at least one LED (6) or a LED strand are provided.
Verfahren zur Herstellung eines LED-Moduls (1) zur Abgabe von Method for producing an LED module (1) for dispensing
Mischlicht, vorzugsweise Weißlicht, das die Schritte aufweist Mixed light, preferably white light, comprising the steps
Erzeugen eines Lichtfeldes (2), das in flächige Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") unterteilt ist, durch Generating a light field (2) which is subdivided into area sectors (3a, 3b, 3c; 3a ', 3b', 3c '; 3a ", 3b", 3c ")
Ausbilden von Dämmen (5), welche Sektoren (3a, 3b, 3c; 3a', 3b', 3c'; 3a", 3b", 3c") des Lichtfeldes (2; 2.'; 2") voneinander trennen, und Einfüllen einer transparenten Vergussmasse oder einer einen Forming dams (5) which separate sectors (3a, 3b, 3c; 3a ', 3b', 3c '; 3a ", 3b", 3c ") of the light field (2; 2';2") from each other, and Fill a transparent potting compound or a
Leuchtstoff enthaltenden Vergussmasse zwischen die Dämme (5) eines jeden Sektors (3a, 3b, 3c; 3a', 3 ', 3c'; 3a", 3b", 3c"). Phosphor-containing potting compound between the dams (5) of each sector (3a, 3b, 3c, 3a ', 3', 3c ', 3a ", 3b", 3c ").
Leuchtvorrichtung, die wenigstens ein LED-Modul (1) gemäß einem der Ansprüche 1 bis 13 und vorzugsweise einen auf das LED-Modul (1) gesetzten Reflektor aufweist. Lighting device comprising at least one LED module (1) according to one of claims 1 to 13 and preferably a reflector placed on the LED module (1).
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EP2994689B1 (en) 2019-01-09
WO2014174083A1 (en) 2014-10-30
DE102013207706A1 (en) 2014-10-30

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