EP2488787A1 - Module d'éclairage - Google Patents

Module d'éclairage

Info

Publication number
EP2488787A1
EP2488787A1 EP10787358A EP10787358A EP2488787A1 EP 2488787 A1 EP2488787 A1 EP 2488787A1 EP 10787358 A EP10787358 A EP 10787358A EP 10787358 A EP10787358 A EP 10787358A EP 2488787 A1 EP2488787 A1 EP 2488787A1
Authority
EP
European Patent Office
Prior art keywords
light
module
guiding element
lighting module
exit opening
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.)
Withdrawn
Application number
EP10787358A
Other languages
German (de)
English (en)
Inventor
Peter Sachsenweger
Simon Schwalenberg
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.)
Osram GmbH
Original Assignee
Osram 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 Osram GmbH filed Critical Osram GmbH
Publication of EP2488787A1 publication Critical patent/EP2488787A1/fr
Withdrawn legal-status Critical Current

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
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/14—Bayonet-type fastening
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • 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]
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]
    • 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
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the invention relates to a lighting module, comprising a Lei ⁇ terplatte, which is equipped at its front with at least one light source, in particular light emitting diode.
  • Compact light modules based on light-emitting diodes require boards on which both the light-emitting diodes themselves (eg individual light-emitting diodes) and electronic components for operating and regulating the light-emitting diodes and thus the light-emitting radiation are mounted.
  • Downstream optics eg lenses or reflectors
  • DE 10 2007 015 475 A1 discloses a multiple light-emitting diode module having a plurality of light-emitting diodes with at least one first and one second light-emitting diode and a light mixing element having a cavity and / or a light mixing rod, the light mixing element having a reflecting surface and a light-emitting element Has light exit surface, emitted by the plurality of light-emitting diodes in operation electromagnetic ⁇ tical radiation reflected on the reflective surface and thereby mixed and the reflected and mixed ⁇ by radiation is coupled out through the light exit surface.
  • This multiple light-emitting diode module has the disadvantage that complex and cost-intensive and difficult to cool ⁇ re structures with multiple connected boards are needed. It is the object of the present invention to at least partially avoid the disadvantages of the prior art and in particular to provide a simply constructed, easy and effective optically contactable light module.
  • a lighting module having a Lei ⁇ terplatte which is equipped at its front with at least one light source, and a hollow light ⁇ guiding element, which surrounds the at least one light source laterally encircling and on the at least one Lichtquel ⁇ le addition extends forward, wherein an inside of the light-guiding element at least partially reflective keepss- is taltet and corresponds to a front-side opening of the Lichtleitele ⁇ ments a light exit opening of the lighting module.
  • the light from the light source (s) is ge leads ⁇ means of Lichtleitele- ments, which acts as a "light channel" from the plane of the light source (s) to a higher level of the lighting module, namely the plane of the light exit opening.
  • This can be defi ⁇ ned also for electronic components (Kondensa ⁇ , resistors, driver blocks, etc.) bridges required installation space and a new, higher light output level. Attachment elements (optical or optically active elements, etc.) can then be brought as close as possible to the Lichtaus ⁇ outlet opening as the new light-emitting plane, whereby Einkoppellage be avoided.
  • the fact that the light-guiding element surrounds the at least one light source laterally also encompasses the case in which the light-guiding element is displaced forward relative to the light source, ie can have a (mostly small) vertical distance to the at least one light source (more precisely, its emitter surface). However, it is for the avoidance of Loss of light preferably, if the light guide is not offset against the ⁇ ⁇ over the light source to the front.
  • the at least one light source comprises at least one light-emitting diode. If several LEDs are present, they can be lit in the same color or in different colors. A color can be monochrome (eg red, green, blue etc.) or multichrome (eg white).
  • the light emitted by the at least one light-emitting diode can also be an infrared light (IR LED) or an ultraviolet light (UV LED).
  • IR LED infrared light
  • UV LED ultraviolet light
  • Several light emitting diodes can produce a mixed light; eg a white mixed light.
  • the at least one light-emitting diode may contain at least one wavelength-converting phosphor (conversion LED).
  • the at least one light-emitting diode can be in the form of at least one individually housed light-emitting diode or in the form of at least one LED chip. Several LED chips can be mounted on a common substrate ("submount").
  • the at least one light emitting diode can min with ⁇ least be equipped with a private and / or shared optics for beam guiding, for example, at least one Fresnel lens, collimator, and so on.
  • organic LEDs OLEDs, eg polymer OLEDs
  • the at least one Lichtquel ⁇ le for example, have at least one diode laser.
  • a plane of the Lichtaus ⁇ outlet opening is parallel to a plane of the at least one light source.
  • the "light interface" ⁇ a fold of the plane of the light source (s) in which these angeord ⁇ net is or are to be raised in the direction of the main radiation direction or optical axis.
  • the plane of the light exit opening can be arranged at an angle to the plane of the at least one light source.
  • the light guide ei ⁇ ne has a substantially hollow cylindrical basic shape. This form is particularly easy to produce and assemble.
  • the light guide element consists of an electrically non-conductive or dielectric material.
  • electrically conductive attachment elements eg aluminum reflectors
  • the light guide element can ⁇ to, for example, of a plastic ⁇ best hen, for example PC, PMMA, COC, COP, or glass.
  • the lighting module has at least one receiving means for receiving an attachment element via the light exit opening.
  • This receipt confirmation ⁇ tel can be used in particular for a Lüj ust ist of Aufsatzele ⁇ ment with respect to the light exit opening.
  • the receiving means may in particular have a defined also for various light-emitting modules ( 'standard') position to the light exit opening so as to a draft of attachment elements is substantially independent of a design of such light-emitting modules (without the cap member) to ges ⁇ talten.
  • the receiving means is designed as a mounting interface to be able to fix on the ⁇ set element at a suitable embodiment with a defined position with respect to the light exit opening of the light module.
  • the attachment interface can play a part of a bayonet fitting, a screw cap to be at ⁇ (generally a rotary closure), a plug seal, etc..
  • the lighting module at least a part of which is arranged on the front side of the printed circuit board electronic components up a trailing cover for has, wherein a front side of the cover is located substantially in the plane of the light exit opening. Characterized a substantially planar front upper ⁇ surface of the lighting module can be achieved, in particular, in which the light outlet opening is substantially flush embedded.
  • the Lichtleit ⁇ element laterally at least partially surrounded by a ner ring cover for at least a portion of arranged on the front side of the printed circuit board electronic components.
  • the, in particular central, eg circular, region for the at least one light source can be spatially separated from a region surrounding it, in particular ring-shaped, area to a particularly compact and easy to install.
  • the light-guiding element grants direct access to the at least one light source through the light exit opening, ie, for example, has no cover.
  • a loss of light between the at least one light source and the light exit opening can be minimized.
  • the light guide ei ⁇ ne has widening forward (reflective) inside.
  • the inner side may, for example, have a substantially ke ⁇ gelstumpfförmige contour.
  • a slant angle also called “draft angle”
  • a slant angle is in a range between 1 ° and 10 °, in particular ⁇ sondere between 1 ° and 5 ° (including the end values).
  • the Lichtleitele ⁇ ment having a forwardly tapered inside, eg with an inverted frustoconical contour. This gives the advantage that a radiation of the least one light source emitted from the Minim ⁇ light beam can be dekollimiert, resulting in a narrower angular distribution. It has proven to be advantageous that the angle bevel is in a range between -1 ° and -10 °, in particular between -1 ° and -5 ° (including the end values).
  • the inside of the light-guiding element has an optically effective surface structure.
  • a light mixture e.g. with respect to a brightness and / or a color of the light emitted by the at least one light source, in a simple and compact manner.
  • the surface structure comprises a wave structure or is formed by means of such.
  • the wave structure may include, for example, a sinusoidal wave structure, but also a shape based on splines or even a freeform. It has proved advantageous erwie ⁇ sen that a so-called "Peak-to-Valley" angle ß der Wel ⁇ lentechnik in a range [30 °; 60 °].
  • other general height structures can be used, for example in the form of a circumferential zig-zag pattern.
  • the surface structure comprises a roughened surface, e.g. an isotropic or anisotropic scattering surface. This results in the advantage that a light mixture directed with respect to an azimuthal and / or polar angle can be achieved.
  • the reflection surface or inside of the light ⁇ guiding element wholly or partially be colored or multicolored, whereby a color of the emitted light can be colored.
  • the reflecting portion of the light guide for example, the inside of which can be configured generally specular or diffuse reflec ⁇ rend, for example by means of a coating or a film.
  • the coating or the film may have, for example, at least one layer of aluminum, silver, a dielectric coating and / or, for example, barium sulfate.
  • the reflection surface of the light-guiding element for example its inner side, an optical film, for example, a high ⁇ reflecting mirror sheet or diffuser film (so-called "Bright-ness Enhancement Film", BEF), or have such a coating, whereby efficiency is increased.
  • Ele ⁇ elements may be provided with the same reference numerals for clarity.
  • FIG. 1 shows, in a view obliquely from the front or from above, a lighting module according to the invention without an attachment element;
  • FIG. 3 shows an oblique view of the lighting module with an attachment element floating above it
  • FIG. 5 shows in a view obliquely from the front a group of light-emitting diodes of the lighting module in a further arrangement
  • FIG. 6 shows, in a view obliquely from the front, a group of light-emitting diodes of the light-emitting module in yet another arrangement
  • Fig.7a shows a sectional view in side view
  • FIG. 7b shows in a view obliquely from the front the light-conducting element from FIG. 7a surrounding the light-emitting diodes with the possible light path;
  • FIG. 8 shows a sectional side view of the light-conducting element surrounding the light-emitting diodes
  • FIG. 9 shows a sectional side view of a light-conducting element surrounding the light-emitting diodes according to a further embodiment with a plurality of possible light paths;
  • FIG. 10 shows a sectional side view of a light-conducting element surrounding the light-emitting diodes according to yet another embodiment with a plurality of possible light paths;
  • Fig. 13 shows a section of the light guide
  • Fig.l shows in a view obliquely from the front or top of an inventive lighting module 1 without attachment element. 2 shows the lighting module as a sectional view in an oblique ⁇ view.
  • the lighting module 1 has a substantially disc-shaped printed circuit board 2, which is equipped in a central region Z of a front side with a plurality of light sources in the form of light-emitting diodes 3.
  • the light-emitting diodes 3 can emit light in a similar manner or differ in terms of their brightness and / or color.
  • a front edge 5 of the light-guiding element 4 is limited and surrounds a substantially The Lichtaus ⁇ outlet opening L corresponds in other words a front opening of the light guide 4.
  • the standing by the Hohlzy ⁇ linderform straight or parallel inside 4a which is designed to be reflective, has the advantage that an angular distribution of from the light sources 3 emitted light beam is rotationally symmetric.
  • the printed circuit board 2 is further equipped in a surrounding region U surrounding the central region Z with further electronic components 30, eg with resistors, capacitors and / or logic components, eg as part of a driver logic.
  • the located in the peripheral region U further electronic components 30 are exceeded by an annular bulges cover 6, which rests with a rear edge on the printed ⁇ te. 2
  • the annular cover 6 is fixed by means of two Schrau ⁇ ben 7 and has a bushing 28 for e- contacting a lektrischen also mounted on the printed ⁇ te 4 plug 29.
  • the annular cover 6 has an essentially circular cylindrical inner wall 8 (corresponding to an inner lateral surface or inner lateral wall) which laterally concentrically surrounds the central region Z of the lighting module 1 and thus also the light-conducting element 4.
  • the annular cover 6 further includes 9 (ent ⁇ speaking an outer circumferential surface or outer side wall) has a substantially circular cylindrical outer wall.
  • the outer wall 9 has a same height as the In ⁇ nenwand 8.
  • the inner wall 8 and the outer wall 9 may rest with its rear edge on the circuit board 2 and be connected at its front edge by a cover wall 10th
  • the top wall 10 is designed here as an annular, e- bene plate.
  • the light guide 4 and the ring ⁇ cover 6 may be separate components, be interconnected components or be integrated with each other.
  • a first fixing ⁇ tion interface in the form of an inner bayonet socket 11 is integrated in the inner wall 8 of the ring cover 6, a first fixing ⁇ tion interface in the form of an inner bayonet socket 11 is integrated in the outer wall 9 of the ring cover 6, a second mounting interface in the form of an outer Bajo net socket 12 is integrated.
  • Each of the bayonet mountings 11 and 12 has in each case three times a longitudinal slot 13 accessible from the front, at the end of which a short transverse slot 14 is attached at right angles.
  • the longitudinal slot 13 has a horizontal bottom, which can also be used as a location aid.
  • An attachment element can have a bayonet socket which fits to one of the bayonet mountings 11 or 12 and which can be inserted into the longitudinal slot 13 and can be fastened by rotation into the transverse slot 14.
  • the cross slot 14 For assigning the bayonet mount of the bayonet base and detent, the cross slot 14 a locking nose, via which a entspre ⁇ sponding locking
  • the lighting module 1 has in other words a substantially planar front surface on which the annular combustion cover 6 and the light guide element 4 close off flush.
  • the light module 1 can be easily inserted into a heat sink (not shown), e.g. by flat support on its back, e.g. by insertion into a corresponding receptacle of the heat sink. This provides efficient cooling in a simple manner.
  • FIG 3 shows in an oblique view the lighting module 1 with egg ⁇ nem hovering optical element as the Aufsatzele- element in the form of a reflector 16.
  • Figure 4 shows the light module with the reflector 16 floating above in an enlarged section in an area of a inner bayonet
  • the reflector 16 has a pot-like, eg parabolic, shaped reflective inner side 17 and can be fitted with a rear light inlet opening (o.Fig.) on or close to the light exit opening L of the Lichtleitele- element 4.
  • the reflector 16 has a rear bayonet base 18 for engagement with the inner (smaller) bayonet socket 11 of the light module 1.
  • the bayonet base 18 has three to the bayonet socket complementary longitudinal slots 19 and transverse slots 20, wherein 20 ei ⁇ ne locking lug 15 is in the transverse slot. Similarly, another on ⁇ set element with a correspondingly larger Baj onettsockel and a correspondingly larger light entrance opening to the outer bayonet socket 12 are attached.
  • Fig. 5 shows, in an oblique view from the front, a group of light emitting diodes 3 for use e.g. in the lighting module 1 in a further arrangement.
  • the light emitting diodes 3 are arranged in a rectangular (m ⁇ n) matrix pattern (in this case a 5 ⁇ 5 square matrix pattern).
  • FIG. 6 shows, in a view analogous to FIG. 5, a group of light-emitting diodes 3 in yet another arrangement.
  • the LEDs 3 are now arranged in a pattern of concentric rings with a central Be Glaplatz.
  • FIG. 7a shows a sectional side view of the light-conducting element 4 surrounding the light-emitting diodes 3 with a drawing of a possible light path P from one of the light-emitting diodes 3 to the light exit opening L.
  • FIG. 7b shows the light-guiding element 4 in a view obliquely from the front. In Fig.7a, the Ringabde ⁇ ckung 6 is shown for the right side next to the light guide 4 still.
  • a light-emitting diode 3 as a Lambertian radiator typically radiates substantially forward into a front half-space, which is centered about the symmetry axis, which is also directed to the front. So-with, a portion of the light emitted from the LEDs 3 light directly from the light exit opening L, while another part, re ⁇ is flexed one or more times on the reflective inner surface 4a, which serves as a reflection surface before it is output through the light exit opening L becomes.
  • the drawn light path P represents a light beam emitted from the central light emitting diode 3 and reflected twice on the inner side 4a.
  • FIG 8 shows a sectional side view of the light-emitting diodes 3 surrounding the light guide 4 with several possible ⁇ union light paths P one of the light emitting diodes 3, wherein the light paths P are shown as simple lines.
  • the light from the light emitting diodes 3, 3 executes by means of the Lichtleitele- member 4, which acts as a "light channel" from the plane of the LED to a higher level of the lighting module 1 ge ⁇ , namely to the plane of the light exit opening L.
  • the for the electronic components 30 required te ⁇ space, which is represented by the surrounding area U or the volume of the ring cover, bridges and defines a new, higher light exit plane.
  • Attachment elements can be led manufacturers to the light output opening ⁇ L-emitting than the new light level then arbitrarily close, thereby coupling losses are avoided.
  • the LEDs 3 and the other electronic components 30 can be protected.
  • Electrically conductive attachment elements eg aluminum reflectors
  • the attachment element may be generally designed as a lens or optical ⁇ cell as set, for example, as a reflective Op ⁇ tik (for example as a reflector) or as a refractive optical system (for example, as a lens or Lens).
  • the attachment element can also be an optically substantially non-effective element, for example a transparent cover plate.
  • FIG. 9 shows a sectional side view of a light-conducting element 31 surrounding the light-emitting diodes 3 according to a further embodiment with a plurality of possible light paths.
  • a contour of the inner side 32 of the still substantially hollow cylindrical light-guiding element 31 is now truncated cone-shaped with a course running upwards or forwards.
  • This provides the advantage that the radiation of the light beam emitted by the light-emitting diodes 3 can be collimated, which results in a narrower angular distribution.
  • an angular slope also called “draft angle”
  • FIG. 10 shows a sectional side view of a further light-guiding element 33 surrounding the light-emitting diodes 3 according to yet another embodiment with a plurality of possible light paths.
  • a contour of the inner side 34 of the still substantially hollow cylindrical light-guiding element 33 is now in the reverse frusto-conical shape with a course running upwards or forwards.
  • the Win ⁇ kelschräge is in a range between -1 ° and -10 °, in particular between -1 ° and -5 ° (including Endwer- te).
  • light-guiding element 4 has on its reflective inner side 4a a surface structure in the form of a circumferential (general) wave structure.
  • the wave structure may include a sinusoidal wave structure, but also a shape based on splines or even a free shape. It has proven to be advantageous that a so-called "peak-to-valley" angle ⁇ of the wave structure in a range [30 °; 60 °].
  • the surface structure achieves a light mixture of the light emitted by the light-emitting diodes 3 with respect to a brightness and / or a color.
  • the reflection surface of the light-guiding element for example its inner side, an optical film, for example, a highly reflective end mirror film or diffuser film (so-called “Brightness En ⁇ hancement film” BEF), or have such a coating, whereby efficiency is increased.
  • an optical film for example, a highly reflective end mirror film or diffuser film (so-called “Brightness En ⁇ hancement film” BEF)
  • BEF diffuser film
  • the reflection surface of the light-guiding element can have or be a roughened surface, for example an isotropic or anisotropically scattering surface. Which gives the advantage that with respect to an azimuthal and / or polar Win ⁇ kels directed light mixing is achieved. Also, the reflection surface of the light-guiding element can be completely or partially colored in one color or in several colors, whereby can be colored by a color of the emitted light.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un module d'éclairage (1) qui comprend une carte de circuit imprimé (2) équipée, sur sa face avant, d'au moins une source lumineuse (3), en particulier une diode électroluminescente, ainsi qu'un élément guide de lumière creux (4) entourant circonférentiellement latéralement la source lumineuse (3) et s'étendant vers l'avant au-delà de la source lumineuse (3). Selon l'invention, une face intérieure (4a) de l'élément guide de lumière (4) est au moins partiellement réfléchissante et une ouverture côté avant de l'élément guide de lumière (4) correspond à une ouverture de sortie de lumière (L) du module d'éclairage (1).
EP10787358A 2009-12-04 2010-11-26 Module d'éclairage Withdrawn EP2488787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009047487A DE102009047487A1 (de) 2009-12-04 2009-12-04 Leuchtmodul
PCT/EP2010/068274 WO2011067172A1 (fr) 2009-12-04 2010-11-26 Module d'éclairage

Publications (1)

Publication Number Publication Date
EP2488787A1 true EP2488787A1 (fr) 2012-08-22

Family

ID=43597788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10787358A Withdrawn EP2488787A1 (fr) 2009-12-04 2010-11-26 Module d'éclairage

Country Status (7)

Country Link
US (1) US20120236559A1 (fr)
EP (1) EP2488787A1 (fr)
JP (1) JP2013513198A (fr)
KR (1) KR101497482B1 (fr)
CN (1) CN102639930A (fr)
DE (1) DE102009047487A1 (fr)
WO (1) WO2011067172A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004683A1 (de) * 2011-02-24 2012-08-30 Oktalite Lichttechnik GmbH Leuchtanordnung mit einer LED-Platine, einem Reflektor und einem dazwischen angeordneten Distanzring
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KR20120104282A (ko) 2012-09-20
WO2011067172A1 (fr) 2011-06-09
CN102639930A (zh) 2012-08-15
JP2013513198A (ja) 2013-04-18
DE102009047487A1 (de) 2011-06-09
US20120236559A1 (en) 2012-09-20
KR101497482B1 (ko) 2015-03-02

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