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WO2009116095A1 - Source lumineuse à del simulant la lumière d'une flamme - Google Patents

Source lumineuse à del simulant la lumière d'une flamme Download PDF

Info

Publication number
WO2009116095A1
WO2009116095A1 PCT/IT2008/000178 IT2008000178W WO2009116095A1 WO 2009116095 A1 WO2009116095 A1 WO 2009116095A1 IT 2008000178 W IT2008000178 W IT 2008000178W WO 2009116095 A1 WO2009116095 A1 WO 2009116095A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
leds
current
luminous source
pseudo
Prior art date
Application number
PCT/IT2008/000178
Other languages
English (en)
Inventor
Edda Incerti
Original Assignee
Incerti & Simonini Di Incerti Edda & C.S.N.C.
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 Incerti & Simonini Di Incerti Edda & C.S.N.C. filed Critical Incerti & Simonini Di Incerti Edda & C.S.N.C.
Priority to PCT/IT2008/000178 priority Critical patent/WO2009116095A1/fr
Publication of WO2009116095A1 publication Critical patent/WO2009116095A1/fr

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
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/04—Lighting devices or systems producing a varying lighting effect simulating flames
    • 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
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/155—Coordinated control of two or more light sources
    • 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
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • 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]
    • 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
    • H05B45/12—Controlling the intensity of the light using optical feedback

Definitions

  • This invention concerns a LED luminous source simulating the light of a flame.
  • LED luminous sources substituting flame lighting sources and in particular candles. Besides being a substitute for a candle, some of these luminous sources are also trying to simulate its presence, but the simulation of the flame so far has been approximate.
  • the present invention aims at overcoming the limitations and imperfections of the known art, by realizing a LED luminous source capa- ble of reproducing a flame-like luminous source more faithfully, so as to be confused with the same.
  • the luminous source according to the invention is characterized by the fact that:
  • Figures 2A and 2B the same views of Fig. 1A and 1 B, with a different conformation of the flame, due to a different distribution of the LED piloting current;
  • the total LED piloting current l ⁇ is equally shared among the two axes, and on each axis the LED piloting current of one side of the axis is shared, with respect to the LED piloting current of the other side, ac- cording to a sharing percentage that is variable in time in a pseudo-casual manner, with variation steps not exceeding 1/10 of said total current l ⁇ , so as to prevent the discontinuity of the tip shifts of the flame (in its various positions) from becoming evident to the observer.
  • this LED piloting criterion simulates a casual and continuous shifting of the tip of the flame, which resembles the tip shifts of a real flame.
  • the value of said variation steps is chosen at a value not exceeding 1/300 of the total current I 1 ,
  • Figure 1B represents the case of a pilot current distributed among the LEDs at an equal percentage (the LED piloting current of the LEDs of the same axis being shared between the two LEDs by 50%).
  • the image of the flame turns out to be essentially symmetrical with respect to the continuous vertical line passing through the crossing point of the two axes, the tip "8" of the flame being set up on said vertical line.
  • the Figures 2A and 2B are again relating to the LED candle shown in the previous figures, and differ from the latter by a different conformation of the flame due to a different distribution of the LED piloting current.
  • they refer to a case wherein the LED piloting current of a same axis is absent on one LED, but is 100% present on the other LED.
  • the image 7 of the flame appears inclined, with the tip of the flame essentially at the same distance from the vertical planes passing through the two axes.
  • said central LED is piloted by a current fit to produce a lighting emission lower than the 20% of the over- all lighting emission of the lateral LEDS and variable in a pseudo-casual manner.
  • the block 20 is in fact representing one or more keys capable of setting up the controlling algorithm for the pseudo-casual supply of the LEDs, and in particular for the value of the resulting lighting intensity.
  • the block 21 represents on the contrary a sensor of the environmental luminosity that regulates the value of the lighting intensity resulting, in relation to the value of the environmental luminosity.
  • a variant may regard the shape and coloring of the LEDs. Whilst the Figure 6A in fact repeats the LED conformations of the Figures 3A and 3B (four lateral LEDs of an elliptical cross-section and a central LED of a circular cross-section), the Figure 6B shows 5 LEDs of a circular cross-section, and the Figure 6C shows 5 LEDs, one central with a circular cross-section and four lateral two- colored LEDs "2" with an amber or reddish-orange/red emission. Another variant may regard the number of LEDs present on each side of the two axes, number not necessarily limited to one single LED per side.
  • LEDs with an elliptical cross-section which may, as shown in the examples of the Figures 8C 1 6D, 7C 1 7D, 8A, 8B and 8C 1 have their major axes converging toward each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention porte sur une source lumineuse qui a des DEL pilotées par un courant variable de façon pseudo-temporaire et est caractérisée par le fait que : - sur deux axes coplanaires essentiellement perpendiculaires entre eux, au moins deux DEL sont présentes sur chaque axe et installées dans une position opposée au point d'intersection des deux axes ; - le courant de pilotage de DEL total IT- est également partagé entre les deux axes, et, sur chaque axe, le courant de pilotage de DEL total d'un demi-tour d'axe est partagé, par rapport au courant de pilotage de DEL total de l'autre demi-axe, selon un pourcentage de partage variable de façon pseudo-temporaire, ladite variabilité étant caractérisée par des étapes de variation ne dépassant pas 1/10 dudit courant de pilotage de DEL total IT.
PCT/IT2008/000178 2008-03-18 2008-03-18 Source lumineuse à del simulant la lumière d'une flamme WO2009116095A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000178 WO2009116095A1 (fr) 2008-03-18 2008-03-18 Source lumineuse à del simulant la lumière d'une flamme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000178 WO2009116095A1 (fr) 2008-03-18 2008-03-18 Source lumineuse à del simulant la lumière d'une flamme

Publications (1)

Publication Number Publication Date
WO2009116095A1 true WO2009116095A1 (fr) 2009-09-24

Family

ID=40085565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2008/000178 WO2009116095A1 (fr) 2008-03-18 2008-03-18 Source lumineuse à del simulant la lumière d'une flamme

Country Status (1)

Country Link
WO (1) WO2009116095A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013204800A1 (en) * 2013-04-12 2014-10-30 Dusk Australasia Pty Ltd Flickering Candle
GB2552037A (en) * 2016-01-27 2018-01-10 Li Xiaofeng Imitation candle amd flame simulation assembly thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29609043U1 (de) * 1996-05-22 1996-08-08 Krummen, Helmut, Dipl.-Ing., 52445 Titz Elektrisches Grablicht
US20010033488A1 (en) * 2000-02-14 2001-10-25 Alex Chliwnyj Electronic flame
US20040223326A1 (en) * 2003-05-06 2004-11-11 Wainwright Harry Lee Flame simulating device
US20050007779A1 (en) * 2003-07-07 2005-01-13 Hiroshi Nozawa Imitation flame generating apparatus and method
US20050047127A1 (en) * 2003-08-25 2005-03-03 Milla Tutman Electronic pillar candle
US20060208666A1 (en) * 2005-03-16 2006-09-21 Johnson David C Electronic lighting device for simulating a flame
WO2007005904A2 (fr) * 2005-07-01 2007-01-11 Roussel Paul D Ampoule electronique simulant une flamme de gaz

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29609043U1 (de) * 1996-05-22 1996-08-08 Krummen, Helmut, Dipl.-Ing., 52445 Titz Elektrisches Grablicht
US20010033488A1 (en) * 2000-02-14 2001-10-25 Alex Chliwnyj Electronic flame
US20040223326A1 (en) * 2003-05-06 2004-11-11 Wainwright Harry Lee Flame simulating device
US20050007779A1 (en) * 2003-07-07 2005-01-13 Hiroshi Nozawa Imitation flame generating apparatus and method
US20050047127A1 (en) * 2003-08-25 2005-03-03 Milla Tutman Electronic pillar candle
US20060208666A1 (en) * 2005-03-16 2006-09-21 Johnson David C Electronic lighting device for simulating a flame
WO2007005904A2 (fr) * 2005-07-01 2007-01-11 Roussel Paul D Ampoule electronique simulant une flamme de gaz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013204800A1 (en) * 2013-04-12 2014-10-30 Dusk Australasia Pty Ltd Flickering Candle
GB2552037A (en) * 2016-01-27 2018-01-10 Li Xiaofeng Imitation candle amd flame simulation assembly thereof
GB2552037B (en) * 2016-01-27 2020-08-19 Li Xiaofeng Imitation candle and flame simulation assembly thereof

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