EP3914047A1 - Led-diodenband für langlebige dauerbeleuchtung - Google Patents

Led-diodenband für langlebige dauerbeleuchtung Download PDF

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Publication number
EP3914047A1
EP3914047A1 EP21175069.0A EP21175069A EP3914047A1 EP 3914047 A1 EP3914047 A1 EP 3914047A1 EP 21175069 A EP21175069 A EP 21175069A EP 3914047 A1 EP3914047 A1 EP 3914047A1
Authority
EP
European Patent Office
Prior art keywords
tape
led diodes
led
equal
diodes
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.)
Pending
Application number
EP21175069.0A
Other languages
English (en)
French (fr)
Inventor
Erik MERKEZ
Marc LASSIAZ
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.)
FS Tunnel SAS
Original Assignee
FS Tunnel SAS
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 FS Tunnel SAS filed Critical FS Tunnel SAS
Publication of EP3914047A1 publication Critical patent/EP3914047A1/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to LED lighting devices and more particularly to LED lighting strips.
  • the LED diodes are electrically arranged in a single row extending along the strip, with LED diodes electrically connected in series by a semi-rectified voltage from a mains voltage of 230V AC (i.e. an equivalent of 200V DC average approximately after double-wave rectification).
  • LED diodes are typically Model 2835 with 0.2W maximum power and 0.1W rated power. LED diodes are used at their nominal or even maximum power.
  • the first case requires the installation of another tape or emergency light, and the second decreases the intensity of the light.
  • Requirement CN 104613357 discloses a lighting device comprising an LED strip of great length having short series of LED modules, the series being connected in series or in parallel.
  • This device comprises a main power supply connected to the series of LED modules via circuits making it possible to supply these series of LED modules in DC with constant voltages and currents.
  • GB 2 361 988 discloses a modular lighting system comprising coextruded emitting ribbons. These ribbons have printed circuits and diodes. The system also includes contact elements for electrically connecting printed circuits to a power bus.
  • Requirement CN 102954375 discloses a lighting device comprising a plurality of lighting modules connected in series by interconnection elements, wherein each interconnecting element comprises a base plate and a hollow part, and the last lighting module of the device lighting comprises interconnecting elements which have been cut along their transverse axes to form female connectors.
  • Requirement CN109185737 discloses a lighting device configured to decrease damage to the device in the event of a short circuit of the lighting units.
  • the device comprises lighting modules connected in series, each lighting module comprising at least two lighting components connected in parallel and each lighting component comprising at least two lighting units, each of the latter possibly being one. LED or a combination of LEDs.
  • N can be between 15 ⁇ 3 ⁇ U N / 200 and 30 ⁇ 3 ⁇ U N / 200.
  • U N 200 V + / - 5V, for example, but the invention is not limited to a particular voltage, and we can for example supply the tape with a filtered DC voltage, for example 24V or 48V or other, or rectified single-wave.
  • the ribbon according to the invention has an increased lifespan, because the LED diodes work well below their nominal power, and the heating level prevents degradation of the diodes and of the casing.
  • the less heating of the LED diodes makes it possible to arrange the LED diodes in two or three rows, or even more, to compensate for the lower light power emitted individually by each LED diode in the case of their nominal or even maximum use.
  • the number of diodes per linear meter can thus be higher, and the light intensity be of the order of that of the previous ribbons.
  • the power supply can be done under a rectified or semi-rectified direct voltage, by means of a single or double alternation rectifier, supplied from the alternating network.
  • the input voltage of the rectifier can be that of the network, typically 230 V AC. It is thus possible to have the bus voltage U N equal to practically 200V DC average (198V is measured with a voltmeter in DC mode).
  • the module can be designed to operate at a nominal voltage U N equal to approximately 100 V DC average, depending on the country, or even another voltage.
  • Each module preferably has three rows of LED diodes extending along the strip.
  • the ribbon preferably comprises a flexible printed circuit extending over its entire length, and carrying the LED diode modules.
  • N is between 20 ⁇ 3 ⁇ U N / 200 and 25 ⁇ 3 ⁇ U N / 200.
  • the tape may be provided at its ends with connections linked to quick connectors, making it possible to connect several tapes electrically to one another and to ensure the electrical continuity of the supply bus between the tapes.
  • the tape typically comprises a flexible envelope of transparent plastic material, preferably a silicone.
  • the LED diodes can be electrically connected by groups of six LED diodes, the groups being electrically connected to each other in series by means of electrical resistors, each group comprising two subgroups of three LED diodes connected electrically in parallel, the two sub-groups being electrically connected to each other in parallel.
  • the electric power per LED diode can be between 0.02 and 0.06W, better still between 0.03 and 0.04 W.
  • the electric power per LED diode can be at least half the nominal power, which is for example 0.1 W for a 2835 type diode.
  • the number of LED diodes per row and per linear meter of strip may be between 150 and 400, the number of LED diodes of the strip preferably being greater than or equal to 180 for 2 rows and 270 for 3 rows.
  • the light power per linear meter of tape can be between 400lm / m and 600lm / m for 2 rows and between 600 and 1100 lm / m for 3 rows.
  • the power supply bus may include copper conductors, in particular wire conductors, extending over the entire length of the tape and / or copper printed circuit tracks.
  • the printed circuit can include a layer of copper 25 to 35 micrometers thick, against usually 10 to 20 micrometers, and the conductors of the cables a cross-section of stranded copper from 0.5 mm2 to 0.6 mm 2 , against usually 0 , 3 to 0.4mm 2 for known tapes.
  • the length of the tape may be greater than or equal to 50 m, in particular may be up to 100 m, or even 200 m.
  • Another subject of the invention is the use of a tape as defined above for lighting a structure such as a tunnel gallery, the tape being supplied 24 hours a day for at least 48 hours, in particular 7 days a week. / 7.
  • a conventional ribbon will typically run from one to two weeks before some LED diodes fail, unlike the invention where the ribbon can run continuously for such a period of time without malfunction.
  • a tape according to the invention is in particular designed to be able to operate for one or two years without interruption.
  • the structure thus lit is for example a gallery, in particular of width and / or height / diameter greater than or equal to 3 m.
  • the ribbon is advantageously supplied by the network via a half-wave rectifier bridge.
  • the DC voltage at the output of this rectifier bridge corresponds to the voltage U N. It is thus approximately 200 V DC for a power supply on the 230V AC 50Hz network.
  • a lighting strip 1 comprising a succession of modules 100 with LED diodes, these modules each being supplied by a supply bus at a nominal voltage U N which is for example a current.
  • Unfiltered DC generated by rectifying the 230 V AC, 50Hz alternating network with a diode bridge.
  • the length L of the tape is for example 50m or more, being able to reach 200m for example, according to the needs.
  • the tape 1 is equipped at its ends with connections 12 and 13 to quick-connect plugs (not shown), which ensure continuity of the supply bus and allow the ribbons to be electrically connected one after the other, the connection electrical being a parallel connection.
  • Each module 100 has, as can be seen on the figure 2 , LED diodes 11 which are electrically connected in series.
  • the diodes 11 are grouped together by sub-groups 18 of three diodes directly connected in series, two sub-groups 18 being connected in parallel to form a group 110 of six diodes 11, the various groups 110 being connected together in series by resistors 17.
  • This higher number of diodes 11 supplied in series by the bus voltage reduces the voltage available at the terminals of each diode 11 and therefore the operating electrical power of each diode, which is thus for example more than 2 times less than the nominal power. at which each diode is intended to operate.
  • each diode 11 The drop in the light power emitted by each diode 11 is compensated for by the greater number of diodes per linear meter of tape.
  • the diodes 11 are arranged in three rows 14, 15 and 16, extending along the strip, as visible on the figures 1 and 3 .
  • the diodes 11 are carried by a flexible printed circuit 20 and the diodes 11 of each subgroup 18 occupy the same axial position along the strip, as can be seen on the figure. figure 3 . This simplifies the parallel assembly of the diodes 11 within each group 110, and makes it possible to keep a relatively large conductive track width, and therefore to reduce the losses by Joule effect.
  • Each resistor 17 is arranged between two groups 110 and electrically connected to them by two respective tracks 112 and 113 in the general shape of a J lying to the right or to the left, which each extend along an edge of the circuit. printed, as visible on the figure 3 .
  • the diodes 11 are components mounted on the surface, for example of type 2835, of 0.2 W of maximum power and 0.1 W of nominal power.
  • the electric power per diode 11 is around 0.04 W, or approximately 11.7 W / m of tape, and the light intensity is of the order of 850 lm / m.
  • the number of diodes 11 per m is for example 276 / m.
  • the printed circuit 20 is arranged in a flexible envelope 21 of which at least the portion covering the diodes 11 is transparent, as illustrated in figure 4 .
  • This envelope 21 is for example made of silicone.
  • the slightest heating of the tape makes it possible to slow down the aging of the material constituting the envelope, in particular its yellowing in the case of silicone.
  • the width of the printed circuit is for example of the order of 15mm, for a total width of the tape of the order of 20mm.
  • the copper thickness of the conductive tracks of the printed circuit 20 is preferably greater than or equal to 25 micrometers, being advantageously between 25 and 35 micrometers.
  • the invention is not limited to the example which has just been described.
  • the ribbon can be produced with only two rows of LED diodes.
EP21175069.0A 2020-05-20 2021-05-20 Led-diodenband für langlebige dauerbeleuchtung Pending EP3914047A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2005312A FR3110671B1 (fr) 2020-05-20 2020-05-20 Ruban à diodes LED pour éclairage continu à longue durée de vie

Publications (1)

Publication Number Publication Date
EP3914047A1 true EP3914047A1 (de) 2021-11-24

Family

ID=72470489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21175069.0A Pending EP3914047A1 (de) 2020-05-20 2021-05-20 Led-diodenband für langlebige dauerbeleuchtung

Country Status (2)

Country Link
EP (1) EP3914047A1 (de)
FR (1) FR3110671B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361988A (en) 2000-05-05 2001-11-07 Avimo Ltd Modular illumination system with strips of infrared LEDs
CN102954375A (zh) 2011-08-24 2013-03-06 欧司朗股份有限公司 用于生产照明装置的方法以及相应的照明装置
CN104613357A (zh) 2015-01-30 2015-05-13 深圳市中长成科技有限公司 超长条型多功能led照明绳装置
CN109185737A (zh) 2018-10-19 2019-01-11 江门市嘉胜照明有限公司 一种led电路、线路板及灯具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361988A (en) 2000-05-05 2001-11-07 Avimo Ltd Modular illumination system with strips of infrared LEDs
US20030103347A1 (en) * 2000-05-05 2003-06-05 Avimo Limited Illumination system
CN102954375A (zh) 2011-08-24 2013-03-06 欧司朗股份有限公司 用于生产照明装置的方法以及相应的照明装置
CN104613357A (zh) 2015-01-30 2015-05-13 深圳市中长成科技有限公司 超长条型多功能led照明绳装置
CN109185737A (zh) 2018-10-19 2019-01-11 江门市嘉胜照明有限公司 一种led电路、线路板及灯具

Also Published As

Publication number Publication date
FR3110671A1 (fr) 2021-11-26
FR3110671B1 (fr) 2022-11-25

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