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WO2008104309A1 - Source lumineuse servant à simuler une source lumineuse ponctuelle et lampe pourvue d'une telle source lumineuse - Google Patents

Source lumineuse servant à simuler une source lumineuse ponctuelle et lampe pourvue d'une telle source lumineuse Download PDF

Info

Publication number
WO2008104309A1
WO2008104309A1 PCT/EP2008/001292 EP2008001292W WO2008104309A1 WO 2008104309 A1 WO2008104309 A1 WO 2008104309A1 EP 2008001292 W EP2008001292 W EP 2008001292W WO 2008104309 A1 WO2008104309 A1 WO 2008104309A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
light
carrier elements
source according
elements
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.)
Ceased
Application number
PCT/EP2008/001292
Other languages
German (de)
English (en)
Inventor
Mario PÖHS
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Priority to EP08715867A priority Critical patent/EP2126457A1/fr
Publication of WO2008104309A1 publication Critical patent/WO2008104309A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F21V3/023—Chinese lanterns; Balloons
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/40—Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
    • 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

  • Light source for simulating a point light source and light with such a light source
  • the present invention relates to a light source with a plurality of carrier elements, wherein the carrier elements each have a substantially planar surface portion, on which at least one light-emitting diode is arranged. Moreover, the invention relates to a luminous element with such a light source, as well as an arrangement of a plurality of such luminous bodies.
  • light source will be referred to below as a “light source unit”, ie not just the actual light source, for example a light-emitting diode, but a unit which may comprise a plurality of components which serve to generate light.
  • components intended to drive or power the "actual” light source should also be understood as elements of the "light source”.
  • Ball lights have a substantially spherical surface through which light can be radiated.
  • the surface is formed by a translucent "light exit body", which may be made of glass or plastic, for example.
  • the light exit body may be illuminated as evenly as possible from the inside, so that a luminaire is made possible which emits light in all directions as uniformly as possible, ie has the most homogeneous possible radiation.
  • a light bulb can serve as a point light source in a very good approximation with sufficiently large light emission body.
  • a light source in the form of a light bulb causes certain disadvantages. For example, light can only be emitted in a certain color.
  • the present invention is based on the object of specifying a light source for a luminaire, which can serve as a point light source in a good approximation, in particular for a ball lamp, and offers more possibilities of influencing the light. Furthermore, a corresponding luminous body should be specified.
  • a light source which has a plurality of carrier elements, wherein the carrier elements each have a substantially planar surface portion, on which at least one light-emitting diode is arranged.
  • the carrier elements are arranged relative to each other such that the surface portions of the carrier elements define the surface or part of the surface of a convex polyhedron, in particular a regular or semiregular polyhedron.
  • the support elements can be a radiation of the luminaire achieve whose strength is very little dependent on the emission direction. It is therefore particularly suitable as a light source for a ball lamp or for the uniform illumination of the inner surface of a sphere or at least a spherical segment, such as a hemisphere.
  • the surface sections of the carrier elements define that part of the surface of a convex polyhedron whose surface normals are directed into a half-space.
  • the surface sections define that part of the surface of a convex polyhedron whose surface normals are directed at least into an eighth space or at least into a quarter space.
  • a convex polyhedron is a convex body bounded by several flat surfaces. If - in the context of the inaccuracy, which is due to the technical implementation - the planar surface portions of the support elements each lie on one of the surfaces of a convex polyhedron, they thus define the surface of this polyhedron. Manufacturing technology is easy to provide plates as support elements.
  • the carrier elements are at least partially formed from a blank of a flexible printed circuit board. It can be provided, for example, that the support elements are brought by appropriate bends of the cut circuit board in the intended mutual arrangement. It can therefore be provided that at least two carrier elements are formed from a one-piece, provided with a bending circuit board, wherein the bend delimits the at least two carrier elements from each other.
  • the light source is formed by a flexible printed circuit board, which forms a supporting body.
  • the flexible circuit board may therefore be provided as a form-determining element of the light source.
  • the illumination of the inner surface of a sphere can in general be made more uniform, the flatter the angles between the support elements or the respective surface portions of the support elements.
  • the light source is generally greater, the flatter these angles are. Therefore, if the illumination of a comparatively small spherical surface is desired, it follows that the light source must also be correspondingly small, which requires a certain minimum size for the said angle.
  • a very good approximation to a point light source can be achieved by suitable adaptation between the emission angle of the LEDs and the matching diameter of the polyhedron with respect to the inner diameter of a spherical surface to be illuminated.
  • the support elements may in this case be designed as plates which are substantially in the form of (equally large) regular pentagons which directly represent the twelve faces of the corresponding dodecahedron.
  • the support elements may in this case be designed as plates which are substantially in the form of (equally large) regular pentagons which directly represent the twelve faces of the corresponding dodecahedron.
  • the dodecahedron shape is suitable, for example, in the case of a light source for illuminating a sphere having a diameter of between 10 and 15 cm, for example about 12 cm, wherein the light source may have a diameter of about 45 to 50 mm. This size of the light source is sufficient (under current technical conditions) to accommodate the necessary components within the light source.
  • the carrier elements In order to enable a radiation of the light source with a particularly suitable luminance, it is advantageous to arrange on the carrier elements in each case at least two light-emitting diodes.
  • RGB LEDs known per se can be used as light-emitting diodes.
  • Carrier elements can be used advantageously the SMD technique (SMD: surface mounted device).
  • the light source further comprises a drive unit for the light-emitting diodes, wherein this drive unit can be arranged on the carrier elements.
  • the drive unit may have, for example, a PWM-IC (PWM: pulse width modulated).
  • PWM pulse width modulated
  • the drive unit comprises a plurality, for example in the case of RGB LEDs three
  • Constant current driver in particular constant current driver with level adjustment.
  • the light source comprises a power supply unit for the light-emitting diodes, wherein the power supply unit is arranged on the carrier elements.
  • the power supply unit can have a linear regulator, protective diodes and electrolytic capacitors.
  • the light source has a drive unit and a power supply unit, wherein the drive unit is arranged on a first part of the carrier elements and the power supply unit is arranged on a second, different from the first part, part of the carrier elements.
  • the number of interconnects that connect the two parts are kept particularly small; For example, it can be provided that a total of only six such connecting tracks exist between the two parts; For example, for this purpose, a first such track for the supply voltage may be provided, a second for a PWM IC, a third for "Ground", and three more for each group of LEDs of a particular color. With fewer or more colors provided, the number of corresponding tracks can be correspondingly lower or greater.
  • the first part of the carrier elements is formed from a first blank of flexible printed circuit boards and the second part of the carrier elements from a second blank of flexible printed circuit boards.
  • these locking elements for example in the form of eyelets and tabs have.
  • a locking connection formed with such locking elements a particularly simple installation of the light source is possible;
  • this is a montage without Tool and also without other components, such as adhesive or solder joints possible.
  • the support elements are flexible circuit boards, because in this case, the locking elements can advantageously be formed only by appropriate shaping of the support elements, ie without separate components.
  • Carrier elements corresponding latching openings and locking lugs or latching eyes and - lugs be formed. A manufacture of such snap-in connections is then particularly easy.
  • a recess for a cable feed or feedthrough can advantageously be provided between at least two carrier elements.
  • such a recess may be provided at a corner, that is, at the respective three support members through which the corner is formed, in an environment of the corner.
  • a luminous element which has a light source according to the invention and a substantially spherical, light-transmitting light exit body, wherein the light source is arranged in the interior of the light exit body.
  • a luminous element arrangement which has at least two luminous bodies according to the invention, which are connected to one another by a common supply cable.
  • Fig. 1 support elements with LEDs and electronic components prior to assembly
  • Fig. 2 the carrier elements shown in Fig. 1, but in another
  • FIG. 3 shows a light source assembled from the carrier elements shown in FIGS. 1 and 2
  • FIG. 4 shows the light source shown in FIG. 3 with the LEDs switched on
  • FIG. 5 an open Leeueht redesign
  • FIG. 6 shows the luminous body shown in FIG. 5 in the closed state
  • FIG. 7 shows the luminous body shown in FIG. 6 with LEDs switched on
  • Fig. 8 shows the luminous body shown in Fig. 7 in front of another background
  • FIG. 9 is a sketch of a light source according to the invention in a state during assembly.
  • a light source according to the invention is shown in FIGS. 3 and 4.
  • the light source has a plurality of, in the embodiment shown here, twelve carrier elements for light-emitting diodes (LEDs).
  • the support elements are plate-shaped, substantially the same size and each have substantially the shape of a regular pentagon. In this way, the support elements can be assembled so that their surfaces - in the context of the conditional by the technical implementation accuracy - describe a Dodekader.
  • the light source thus formed allows for radiation, which - assuming a certain minimum distance - comes close to that of a point light source.
  • the light source shown in this embodiment has a diameter of about 45 to 50 mm and is suitable for example for illuminating a plastic ball having an inner diameter of about 120 mm.
  • RGB LEDs are selected in the embodiment, so that the color of the emitted light is adjustable.
  • flexible printed circuit boards or a flexible printed circuit board are selected as carrier elements 2.
  • the support members 2 are formed from a blank of a flexible printed circuit board. It can therefore be provided in particular that all support elements 2 are formed from only one blank; in the intended polyhedron or dodecahedron shape they can be brought, for example by appropriate bends.
  • the arrangement sketched in FIG. 9 serves only to illustrate the geometrical conditions. In the embodiment shown in Figures 1 and 2 are - due to the blank - all support elements 2 integrally connected to each other.
  • the LEDs 3 are applied to the circuit boards by means of SMD technology.
  • the flexibility of the circuit boards allows a particularly easy assembly of the support elements or a particularly easy relative alignment of the support elements with each other.
  • the LEDs are already functional as such in the "unfolded" state shown in Figures 1 and 2. It can be provided that only the connecting wires of the LEDs are soldered and the other required electrical connections are realized by means of the printed circuit board.
  • the LEDs 3 (not shown in FIG. 9) on the two groups 10, 11 or "half-dodecahedra" are connected in series and the supply voltage results
  • Components that serve to drive the LEDs 3, are on a first part of the support elements 2, on the first 10 of the two groups of Carrier elements 2 arranged.
  • the drive unit has a PWM IC, as well as three constant current drivers, including level adjustment.
  • the PWM IC is arranged on the central support element 2 'of the first group 10, on the outwardly facing surface of this support element 2'.
  • the three components needed for the three colors are also disposed on outwardly facing surfaces of the support members 2 of this first group 10, each component on a respective other support member 2.
  • components which serve to power the LEDs.
  • These components include linear regulators, protection diodes and electrolytic capacitors.
  • the carrier elements have devices which serve for mechanical connection of the carrier elements with each other.
  • This can be latching means, for example, eyelets and tabs, which can be locked into one another.
  • To fix the compounds pads are provided, which can be soldered together.
  • Carrier element 2 ', 2 " provided so that the two groups 10, 11 form two constructs in the manner of a" half-shell ", and these two shells can be folded around a main cable.
  • the electrical connection between the main cable and the carrier elements 2 is provided in the interior of the light source. In this way, unwanted shadowing by cables can be avoided.
  • the data transmission takes place serially via three lines, wherein a light source can be operated individually or with one or more other such light sources arranged in series on a main cable.
  • the main cable can carry two lines for the power supply and three data lines.
  • FIGS. 5 to 8 each show a luminous element according to the invention.
  • the spherical light exit body is opened, so that the light source arranged in the interior can be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne une source lumineuse présentant plusieurs éléments supports (2), ces éléments supports présentant chacun une section superficielle sensiblement plane sur laquelle au moins une, et par exemple deux diodes électroluminescentes sont disposées. Lesdits éléments supports (2) sont disposés les uns par rapport aux autres de telle sorte que leurs sections superficielles définissent la surface d'un polyèdre convexe, par exemple d'un dodécaèdre. Cette source lumineuse peut être perçue comme source lumineuse ponctuelle avec une bonne approximation de sorte qu'elle peut être utilisée par exemple comme source lumineuse pour une lampe sphérique.
PCT/EP2008/001292 2007-02-26 2008-02-19 Source lumineuse servant à simuler une source lumineuse ponctuelle et lampe pourvue d'une telle source lumineuse Ceased WO2008104309A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08715867A EP2126457A1 (fr) 2007-02-26 2008-02-19 Source lumineuse servant à simuler une source lumineuse ponctuelle et lampe pourvue d'une telle source lumineuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007009229.8A DE102007009229B4 (de) 2007-02-26 2007-02-26 Lichtquelle zur Simulation einer Punktlichtquelle, sowie Leuchte mit einer derartigen Lichtquelle
DE102007009229.8 2007-02-26

Publications (1)

Publication Number Publication Date
WO2008104309A1 true WO2008104309A1 (fr) 2008-09-04

Family

ID=38042755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/001292 Ceased WO2008104309A1 (fr) 2007-02-26 2008-02-19 Source lumineuse servant à simuler une source lumineuse ponctuelle et lampe pourvue d'une telle source lumineuse

Country Status (3)

Country Link
EP (1) EP2126457A1 (fr)
DE (1) DE102007009229B4 (fr)
WO (1) WO2008104309A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2354629A1 (fr) * 2010-01-29 2011-08-10 Chiu-Min Lin Lampe à DEL pour éclairage de large zone
JP2020120668A (ja) * 2012-03-16 2020-08-13 フォアライト，エルエルシー 光合成生物の培養および／または増殖の方法および材料

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
DE102008017271B4 (de) 2008-04-04 2018-09-13 Osram Gmbh Leuchte mit zwei Lichtquellen in einer Aussparung eines zumindest teilweise lichtleitenden Trägers, Verwendung dieser Leuchte als Hänge-, Wand- oder Standleuchte und Leuchtvorrichtung für eine solche Leuchte
DE102011079741A1 (de) * 2011-07-25 2013-01-31 Osram Ag Leuchte mit einer vielzahl von leds
DE102012216911A1 (de) * 2012-09-20 2014-03-20 Osram Gmbh Verfahren zum Herstellen einer Lichtanordnung
CN104566037B (zh) * 2015-01-05 2017-06-27 惠州市哈罗德科技有限公司 Led灯

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US20050169006A1 (en) * 2004-01-30 2005-08-04 Harvatek Corporation Led chip lamp apparatus
WO2005090852A2 (fr) * 2004-03-18 2005-09-29 Lighting Science Group Corporation Element d'eclairage utilisant des elements electroluminescents a commande electronique et procede de fabrication dudit element
US20060001384A1 (en) * 2004-06-30 2006-01-05 Industrial Technology Research Institute LED lamp
US20060193130A1 (en) * 2005-02-28 2006-08-31 Kazuo Ishibashi LED lighting system

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DE10235699A1 (de) * 2002-08-03 2004-02-19 Ulo Fahrzeugleuchten Gmbh Leuchtmittel, insbesondere für Kraftfahrzeuge
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Publication number Priority date Publication date Assignee Title
US20050024868A1 (en) * 2001-01-25 2005-02-03 Hideo Nagai Light-emitting unit, light-emitting unit assembly, and lighting apparatus produced using a plurality of light-emitting units
US20050169006A1 (en) * 2004-01-30 2005-08-04 Harvatek Corporation Led chip lamp apparatus
WO2005090852A2 (fr) * 2004-03-18 2005-09-29 Lighting Science Group Corporation Element d'eclairage utilisant des elements electroluminescents a commande electronique et procede de fabrication dudit element
US20060001384A1 (en) * 2004-06-30 2006-01-05 Industrial Technology Research Institute LED lamp
US20060193130A1 (en) * 2005-02-28 2006-08-31 Kazuo Ishibashi LED lighting system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2354629A1 (fr) * 2010-01-29 2011-08-10 Chiu-Min Lin Lampe à DEL pour éclairage de large zone
JP2020120668A (ja) * 2012-03-16 2020-08-13 フォアライト，エルエルシー 光合成生物の培養および／または増殖の方法および材料
JP7066774B2 (ja) 2012-03-16 2022-05-13 フォアライト，エルエルシー 光合成生物の培養および／または増殖の方法および材料
US11505771B2 (en) 2012-03-16 2022-11-22 Forelight, Inc. Methods and materials for cultivation and/or propagation of a photosynthetic organism

Also Published As

Publication number Publication date
EP2126457A1 (fr) 2009-12-02
DE102007009229B4 (de) 2015-01-08
DE102007009229A1 (de) 2008-08-28

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