EP2799768B1 - Éclairage doté d'une unité optoélectronique - Google Patents

Éclairage doté d'une unité optoélectronique Download PDF

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Publication number
EP2799768B1
EP2799768B1 EP14166639.6A EP14166639A EP2799768B1 EP 2799768 B1 EP2799768 B1 EP 2799768B1 EP 14166639 A EP14166639 A EP 14166639A EP 2799768 B1 EP2799768 B1 EP 2799768B1
Authority
EP
European Patent Office
Prior art keywords
unit
led
energy management
luminaire according
circuit board
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.)
Active
Application number
EP14166639.6A
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German (de)
English (en)
Other versions
EP2799768A1 (fr
Inventor
Marcel Griessmann
Christian Hochfilzer
Thierry Dreyfus
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.)
Regent Beleuchtungskoerper AG
Original Assignee
Regent Beleuchtungskoerper AG
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Publication date
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Publication of EP2799768A1 publication Critical patent/EP2799768A1/fr
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Publication of EP2799768B1 publication Critical patent/EP2799768B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also 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
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lamp with LED illuminants according to the preamble of patent claims 1.
  • the invention relates to a lamp head for panel lamps with a direct and/or indirect light component.
  • LEDs are used in the construction of panel lights.
  • rectifiers capacitors and resistors in order to keep the voltage at the LEDs lower than the mains voltage used.
  • AC LEDs are also known that work with a bridge rectifier.
  • these assemblies have no control signals, no intelligence, no control units ( ⁇ P) and must be controlled via the 230V supply, if possible.
  • the LEDs are dimmed via a phase control.
  • a lighting device with a control device for controlling and regulating a large number of light-emitting diodes is known. All LEDs are powered by a single controller.
  • several light-emitting diodes are housed in an LED module, with each light-emitting diode having a different color temperature in order to achieve a light with an adjustable color temperature via a light mixture of the LED outputs.
  • the light-emitting diodes are supplied with an operating current by a driver which is operated from the secondary side of a low-voltage supply.
  • the control of the energy that is assigned to each LED module is based on a PWM principle.
  • the driver is connected to the mains and is controlled by the control device, which is also connected to the mains via a voltage converter.
  • the control device is also connected to other signal sources such.
  • a large number of connections go from the driver to the individual light-emitting diodes of the LED module, which means that a complex connection concept is required.
  • the light emitting diodes can be provided only on one side of a lamp panel.
  • a lighting device with several controllable light-emitting diodes shown.
  • At least one lighting module is provided, which includes a circuit board with multiple LEDs, an optical system, a power source, and self-sufficient module electronics that control the LEDs.
  • the module electronics of individual light modules are connected to a controller via an interface, which controls the light modules. Power is supplied in the conventional manner via a constant current that supplies the individual power sources on the light modules.
  • This lighting device also requires a complicated and costly connection technique.
  • a lamp according to the present invention has at least one light source, a connection to a power supply and an optoelectronic unit with a printed circuit board.
  • a field of several light-emitting diodes (LED field) is used as the illuminant.
  • An alternating current of 230V, as provided in conventional power grids, is preferably used as the power supply.
  • the optoelectronic unit forms a compact unit from a number of optoelectronic components which are assembled and integrated on a common circuit board to form an optoelectronic assembly.
  • the optoelectronic unit includes the lighting means in the form of several LED fields on the printed circuit board and a control unit.
  • a power management unit power management unit
  • the energy management unit with the associated LED fields is connected directly to the power supply, preferably the 230V mains.
  • Each energy management unit thus has a power input that operates the respective LED array.
  • the energy management unit converts the 230V AC into DC power for operating the LED fields, among other things. It is essential that the conversion takes place with a high level of efficiency. For this z. B. clocked conversion method used. Linear control systems are hardly suitable.
  • the optoelectronic unit includes several LED arrays, each with an energy management unit. As mentioned, each LED array includes a number of light-emitting diodes. For example, 2 to 10 LED fields can be combined in one optoelectronic unit. Accordingly, such an optoelectronic unit has 2 to 10 energy management units for the existing LED arrays. The optoelectronic unit thus integrates independent LED arrays that can be controlled independently of one another.
  • the control unit can be given by a ⁇ P unit.
  • the control unit interprets external control signals and controls the energy management unit of an LED field according to the external control signals.
  • Several LED fields are controlled independently of each other via their respective energy management unit. It is thus also a function of the power management unit to control the output power of the control signal coming from the control unit.
  • An AC/DC converter can be provided for the control unit to keep the control unit at a low power level to be able to operate.
  • An SMD-compatible power management unit is preferably used as the energy management unit, which operates a dimmable LED field directly from a 230V line.
  • the optoelectronic unit can include an EMC protection unit in order to enable wired interference suppression.
  • the connections required between individual components for operating the lamp are reduced, since all relevant units are combined to form an optoelectronic unit as an assembly.
  • the LED fields can be connected directly to the 230V power supply and still be controlled individually.
  • connection terminals for the individual connections of the assembly elements can be integrated directly on the same assembly. This reduces the number of electrical components required.
  • exactly one optoelectronic unit with several LED arrays and associated energy management units is provided, with the energy management units being connected directly to the 230V network and each connected to a common control unit.
  • the combination of LED array and power management unit can be used as many times as lighting directions are intended in the luminaire.
  • At least one LED array is preferably provided for direct illumination and at least one LED array for indirect illumination.
  • Several LED fields can also be set up in the luminaire for direct or indirect lighting.
  • At least one LED field each be provided on different sides of a printed circuit board.
  • at least one LED array is fitted on each side of the circuit board so that the LED arrays are oriented in opposite directions. This leads to the situation that both directions to be illuminated are served with the direct light beam of the LED.
  • Several LED fields of the optoelectronic unit, which are provided on one side of the printed circuit board, can be arranged and integrated in a matrix. Thus, an LED matrix is provided on each side of the circuit board. It is advantageous here for the energy management units assigned to the LED arrays to be provided on one side, ie the same side, of a printed circuit board. Thus, all energy management units of the optoelectronic unit are provided on the same side of the circuit board.
  • the optoelectronic units are preferably arranged on the side of the printed circuit board provided for indirect light design.
  • LED arrays on a printed circuit board it is also advantageous to adapt the population density of LED arrays on a printed circuit board to the heat dissipation of the printed circuit board.
  • a component density of about 0.125 W / cm2 preferred.
  • the LED matrices are arranged offset by half a matrix step; the LED matrices are preferably provided offset in both plane directions. This achieves good heat dissipation from the circuit board.
  • a cooler may be provided in the optoelectronic package for each power management package to provide an additional heat dissipation measure.
  • the cooler can be directly thermally coupled and z. B. designed for a power loss of 2W about 8cm 2 in size.
  • the cooler can be carried and attached to the circuit board, preferably on the indirect lighting side.
  • the traces are laid out so that heat is dissipated from the power management unit via thermal bonding. It is advantageous that the LEDs are also cooled, for which purpose separate coolers are used
  • the optoelectronic unit can comprise a communication interface, via which the control unit communicates with light control units. (e.g. units for dimming, for setting color temperature, etc.). Furthermore, the optoelectronic unit can integrate a memory that allows the setting parameters to be stored and, if required, to be sent to the communication interface.
  • light control units e.g. units for dimming, for setting color temperature, etc.
  • the optoelectronic unit can integrate a memory that allows the setting parameters to be stored and, if required, to be sent to the communication interface.
  • the optoelectronic unit in the case of indirect light design, can be provided in connection with a lens plate, in which a lens structure is located opposite each LED field.
  • a thermoformed lens sheet is preferably used.
  • a lens sheet made by injection molding can also be used.
  • the optoelectronic unit is provided in a hollow chamber with a cover when the light is designed directly.
  • a hollow chamber of about 30mm in height.
  • the chamber can be combined with a cover.
  • the cover can be in the form of a diffuser or a prismatic plate, and a light-diffusing film can also be used.
  • a lens plate with a lens structure and a hollow chamber with a cover can be provided at the same time for the production of a luminaire with direct and indirect light design.
  • FIG 1 a schematic of an optoelectronic unit for a lamp according to the present invention is shown.
  • the optoelectronic unit has two LED arrays 1 and 1', each with an associated energy management unit 2 and 2'.
  • the energy management unit forms a power management unit for the LED array.
  • the combination of LED field and energy management unit is integrated twice in the optoelectronic unit. However, several of these combinations can also be used.
  • the energy management units 2 and 2' are directly connected to a 230V power supply 3. Both energy management units 2 and 2' are arranged in parallel and independently of one another. Each LED field has its own from mutually separate power management unit.
  • An EMC unit 4 is provided in the line of the power supply 3, in particular for line-bound protective measures, such as in the event of bursts, surges or network faults.
  • a control unit 5 in the form of a ⁇ P unit is provided for controlling the energy management units 2 and 2' and also controls the LED arrays 1 and 1' via the energy management units.
  • the control unit 5 is directly connected to each power management unit 2 and 2'.
  • the control unit 5 is connected to the power supply 3 via an AC/DC converter 6 and is powered by the AC/DC converter 6 with low energy.
  • the control unit 5 is connected to at least one communication interface 7, 7'.
  • the communication interface 7 is used to record a protocol.
  • the communication interface 7' has a push & dim function. Additional lighting design functions can be integrated through additional communication interfaces.
  • the communication interfaces 7 , 7 ′ are connected in parallel to the control unit 5 after the AC/DC converter 6 .
  • a memory unit (not shown) can be integrated in the optoelectronic unit.
  • FIG 2 is a schematic representation of a section of a lamp according to the invention with direct and indirect light design.
  • a plurality of LEDs 10 for indirect lighting and on a lower side a plurality of LEDs 10 ′ for direct lighting are arranged at a distance from one another on a circuit board 8 .
  • the LEDs 10, 10' can form an LED field together. Instead of individual LEDs 10, 10' can also be provided in each case LED fields.
  • the direct lighting part is usually designed in such a way that the visible light exit surface of the luminaire is homogeneous
  • a hollow chamber 9 is provided for this purpose, in which the LEDs 10 ′ are arranged and which is provided with a cover 11 .
  • the cover consists of a combination of a light-scattering film 11 with a microprismatic cover 12.
  • the distance between the cover 11 and the circuit board 8 is approximately 30 mm.
  • the LEDs 10 provided for indirect lighting are not directly visible and therefore no anti-glare measures are required.
  • the light beams from the LEDs are directed as required by means of a lens plate 13 carrying lens structures 14 . This function is particularly suitable for floor lamps.
  • the lens sheet 13 can be provided as a thermoformed lens sheet.
  • the lens structure 14 has a lens array opposite each indirectly directed LED.
  • the remaining integrated units of the optoelectronic unit, as in figure 1 shown are in figure 2 not reproduced for reasons of clarity.
  • the energy management units of the LEDs are preferably all provided on the upper side, ie also those energy management units of the LEDs 10' for direct illumination.
  • coolers can be provided for cooling the energy management units and possibly also the LEDs.

Landscapes

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

Claims (12)

  1. Luminaire comportant au moins un moyen lumineux, une connexion à une alimentation en courant (3) et une unité optoélectronique comportant une carte de circuits imprimés (8), caractérisé en ce qu' une unité de commande (5) et l'au moins un moyen lumineux sous forme de plusieurs champs de DEL (1, 1') constitués de plusieurs diodes électroluminescentes sont disposés sur la carte de circuits imprimés (8), respectivement une unité de gestion d'énergie (2, 2') étant associée aux plusieurs champs de DEL (1, 1') et les unités de gestion d'énergie (2, 2') étant respectivement connectées directement à l'alimentation en courant (3) avec les champs de DEL (1, 1') associés.
  2. Luminaire selon la revendication 1, caractérisé en ce que l'unité de commande (5) interprète des signaux de commande externes et l'unité de gestion d'énergie (2, 2') d'un champ de DEL (1, 1') peut être commandée en fonction des signaux de commande externes.
  3. Luminaire selon la revendication 1 ou 2, caractérisé en ce qu'exactement une unité optoélectronique comportant plusieurs champs de DEL (1, 1') et des unités de gestion d'énergie (2, 2') associées est prévue, les unités de gestion d'énergie (2, 2') étant connectées directement au réseau 230 V et respectivement connectées à une unité de commande (5) commune.
  4. Luminaire selon la revendication 3, caractérisé en ce qu'au moins un champ de DEL (1, 1') est prévu pour une configuration d'éclairage directe et au moins un champ de DEL (1, 1') est prévu pour une configuration d'éclairage indirecte.
  5. Luminaire selon la revendication 4, caractérisé en ce que respectivement au moins un champ de DEL (1, 1') est prévu sur des côtés différents de la carte de circuits imprimés (8).
  6. Luminaire selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que l'unité de gestion d'énergie associée aux champs de DEL (1, 1') est prévue sur un côté de la carte de circuits imprimés (8) prévu pour une configuration d'éclairage indirecte.
  7. Luminaire selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité optoélectronique présente la carte de circuits imprimés (8) et la densité d'équipement de champs de DEL (1, 1') est adaptée à la dissipation thermique de la carte de circuits imprimés (8).
  8. Luminaire selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un refroidisseur est prévu dans l'unité optoélectronique pour chaque unité de gestion d'énergie (2, 2').
  9. Luminaire selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité optoélectronique comprend au moins une interface de communication (7) par l'intermédiaire de laquelle l'unité de commande (5) communique avec des unités de commande d'éclairage.
  10. Luminaire selon la revendication 4, caractérisé en ce que, dans le cas d'une configuration d'éclairage indirecte, l'unité optoélectronique est prévue en liaison avec une plaquette de lentilles (13) dans laquelle une structure de lentille (14) est opposée à chaque champ de DEL (1, 1') ou à une DEL (10, 10').
  11. Luminaire selon la revendication 4, caractérisé en ce que, dans le cas d'une configuration d'éclairage directe, l'unité optoélectronique est prévue dans une chambre creuse (9) comportant un élément de recouvrement (11).
  12. Luminaire selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité optoélectronique comprend une unité de protection CEM (4).
EP14166639.6A 2013-04-30 2014-04-30 Éclairage doté d'une unité optoélectronique Active EP2799768B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00896/13A CH707975A1 (de) 2013-04-30 2013-04-30 Leuchte mit optoelektronischer Einheit.

Publications (2)

Publication Number Publication Date
EP2799768A1 EP2799768A1 (fr) 2014-11-05
EP2799768B1 true EP2799768B1 (fr) 2023-04-19

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Application Number Title Priority Date Filing Date
EP14166639.6A Active EP2799768B1 (fr) 2013-04-30 2014-04-30 Éclairage doté d'une unité optoélectronique

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EP (1) EP2799768B1 (fr)
CH (1) CH707975A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633613A (zh) * 2014-12-20 2015-05-20 江门市光之典照明有限公司 一种简易写码器
JP2018185396A (ja) * 2017-04-25 2018-11-22 株式会社Ｋ工房 Ｌｅｄディスプレイ

Citations (2)

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DE102007044567A1 (de) * 2007-09-07 2009-03-12 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Beleuchtungseinrichtung mit mehreren steuerbaren Leuchtdioden
US20100045198A1 (en) * 2008-08-21 2010-02-25 George Lee Led light engine

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DE19624087A1 (de) * 1996-06-17 1997-12-18 Wendelin Pimpl Beleuchtungsvorrichtung
US7296913B2 (en) * 2004-07-16 2007-11-20 Technology Assessment Group Light emitting diode replacement lamp
US8358081B2 (en) * 2009-08-21 2013-01-22 Teledyne Technologies Incorporated Lamp assembly
GB2473185B (en) * 2009-08-28 2012-05-30 Ocean Led Ltd Luminaire
US8310158B2 (en) * 2009-09-23 2012-11-13 Ecofit Lighting, LLC LED light engine apparatus
JP2012015148A (ja) * 2010-06-29 2012-01-19 Rohm Co Ltd Ｌｅｄモジュールおよびｌｅｄ照明装置
US8410726B2 (en) * 2011-02-22 2013-04-02 Quarkstar Llc Solid state lamp using modular light emitting elements
DE102011017195A1 (de) * 2011-04-15 2012-10-18 Osram Opto Semiconductors Gmbh Beleuchtungseinrichtung
DE102011018808A1 (de) 2011-04-27 2012-10-31 Osram Opto Semiconductors Gmbh Beleuchtungsvorrichtung und Kontrollvorrichtung zur Steuerung und/oder Regelung einer Vielzahl von Leuchtdioden
JP3171666U (ja) * 2011-08-31 2011-11-10 光碁科技股▲分▼有限公司 両面ランプ
US20130083522A1 (en) * 2011-10-03 2013-04-04 Mark Turner Bowers Light Fixture Using Light Emitting Diodes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044567A1 (de) * 2007-09-07 2009-03-12 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Beleuchtungseinrichtung mit mehreren steuerbaren Leuchtdioden
US20100045198A1 (en) * 2008-08-21 2010-02-25 George Lee Led light engine

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Publication number Publication date
EP2799768A1 (fr) 2014-11-05
CH707975A1 (de) 2014-10-31

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