WO2025201945A1 - Filament de del - Google Patents

Filament de del

Info

Publication number
WO2025201945A1
WO2025201945A1 PCT/EP2025/057228 EP2025057228W WO2025201945A1 WO 2025201945 A1 WO2025201945 A1 WO 2025201945A1 EP 2025057228 W EP2025057228 W EP 2025057228W WO 2025201945 A1 WO2025201945 A1 WO 2025201945A1
Authority
WO
WIPO (PCT)
Prior art keywords
leds
light
led
elongated
array
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
PCT/EP2025/057228
Other languages
English (en)
Inventor
Ties Van Bommel
Johannes Petrus Maria Ansems
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.)
Signify Holding BV
Original Assignee
Signify Holding BV
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 Signify Holding BV filed Critical Signify Holding BV
Publication of WO2025201945A1 publication Critical patent/WO2025201945A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F21K9/20—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
    • F21K9/232—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 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • 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
    • 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
    • F21Y2107/70—Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
    • 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
    • F21Y2109/00—Light sources with light-generating elements disposed on transparent or translucent 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F21Y2113/17—Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
    • 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 invention relates to a light emitting diode, LED, filament configured to, in operation, emit LED filament light.
  • the invention further relates to a lamp and a luminaire comprising such a LED filament.
  • An LED filament lamp is an LED lamp which is designed to resemble a traditional incandescent light bulb with a visible filament for aesthetic and light distribution purposes, but with the high efficiency of lightemitting diodes.
  • the LEDs are arranged on at least one of these surfaces.
  • the elongated carrier may be reflective or light transmissive, such as translucent and preferably transparent.
  • LED filament configurations have been proposed such as arranging LED arrays on multiple sides of an elongated carrier or special translucent-thermally conductive carriers in order to provide a LED filament providing a homogenously omnidirectional light distribution.
  • US 2022/0082214 Al discloses a color tunable filament lamp comprising at least one tunable white LED filament adapted to emit white light, and at least one RGB LED filament.
  • Each RGB LED filament of the at least one RGB LED filament comprises a plurality of groups, each group comprising a red LED, a green LED, and a blue LED.
  • the elongated encapsulant may comprise any one or more of a light scattering material, BaSCL particles, AIO3 particles, and TiCL particles.
  • the elongated encapsulant may be arranged between the first array of a plurality of first LEDs, the second array of a plurality of second LEDs and, where provided, the third array of the plurality of third LEDs, such that the elongated encapsulant covers the first plurality of LEDs and the second plurality of LEDs and, where provided, the third plurality of LEDs.
  • Such a configuration enables reducing or even avoiding cross talk, especially between LEDs of different arrays of LEDs.
  • the elongated carrier comprises a reflectivity, Rl
  • the elongated encapsulant comprises a reflectivity, R2
  • Rl may be at least 40% and may be higher than R2.
  • Rl may be higher than R2 by at least 20 %.
  • the elongated carrier comprises a reflectivity, Rl, a transmissivity, Tl, and an absorption, Al, and at least one of the following may apply: Rl is at least 50 %, Tl is at least 20 %, and Al is less than 3 %.
  • the LED filament may comprise one or more of a first encapsulant arranged between the first array of a plurality of first LEDs and the elongated encapsulant and covering at least a part of the first array of a plurality of first LEDs, a second encapsulant arranged between the second array of a plurality of second LEDs and the elongated encapsulant and covering at least a part of the second array of a plurality of second LEDs, and a third encapsulant arranged between the third array of a plurality of third LEDs and the elongated encapsulant and covering at least a part of the third array of a plurality of third LEDs.
  • each plurality of LEDs may be adjusted in one or both of color point and tunable correlated color temperature, CCT, individually.
  • Such a configuration is particularly advantageous for an array of LEDs comprising RGB LEDs. In any event, such a configuration enables avoiding cross talk between LEDs within an array of LEDs.
  • the cross-sectional U-shape of the elongated carrier may taper in a direction towards the bottom surface.
  • the invention further relates to a LED filament lamp comprising a LED filament according to the invention.
  • the LED filament lamp may further comprise a light transmissive envelope at least partly enclosing the LED filament and a base for electrically and mechanically connecting the LED filament lamp to a socket or a socket of a luminaire.
  • the invention still further relates to a luminaire comprising a LED filament according to the invention.
  • the invention still further relates to a luminaire comprising a LED filament lamp according to the invention.
  • Fig. 1 shows a cross-sectional view of a light emitting diode, LED, filament according to the invention.
  • Figs. 2-6 show cross-sectional views of another light emitting diode, LED, filament according to the invention illustrating different possible colors of LED filament light of a LED filament according to the invention.
  • Fig. 8 shows a cross-sectional view of another light emitting diode, LED, filament according to the invention.
  • Fig. 10 shows a cross-sectional view of another light emitting diode, LED, filament 107 according to the invention.
  • the LED filament 107 differs from the LED filaments 1 and 100-106 described above in relation to Figs. 1-6 and 8-9 in virtue of the following features.

Landscapes

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

Abstract

Filament de diode électroluminescente, DEL, (1) conçu pour, en fonctionnement, émettre une lumière à filament de DEL (2) et comprenant un premier réseau (3) d'une pluralité de premières DEL conçues pour, en fonctionnement, émettre une première lumière à DEL (32), un second réseau (4) d'une pluralité de secondes DEL conçues pour, en fonctionnement, émettre une seconde lumière à DEL (42), et un support allongé (6), le support allongé (6) comprenant une forme de U en coupe transversale formant une cavité allongée (61), une surface inférieure (62), une première surface latérale (63) et une seconde surface latérale (64) faisant face à la cavité allongée, et une ouverture allongée (65) opposée à la surface inférieure, la cavité allongée (61) étant remplie partiellement ou complètement d'un agent d'encapsulation allongé (7), le premier réseau (3) de la pluralité de premières DEL étant disposé dans la cavité allongée (61) sur une première surface parmi la surface inférieure (62), la première surface latérale (63) et la seconde surface latérale (64), le second réseau (4) de la pluralité de secondes DEL étant disposé sur une seconde surface parmi la surface inférieure (62), la première surface latérale (63) et la seconde surface latérale (64) étant différente de la première surface parmi la surface inférieure (62), la première surface latérale (63) et la seconde surface latérale (64), et la lumière à filament de DEL (2) comprenant au moins une partie de la première lumière à DEL (32) et de la seconde lumière à DEL (42), et l'ouverture allongée (65) forme une surface de sortie de lumière du filament de DEL (1).
PCT/EP2025/057228 2024-03-25 2025-03-17 Filament de del Pending WO2025201945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24165883.0 2024-03-25
EP24165883 2024-03-25

Publications (1)

Publication Number Publication Date
WO2025201945A1 true WO2025201945A1 (fr) 2025-10-02

Family

ID=90468949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/057228 Pending WO2025201945A1 (fr) 2024-03-25 2025-03-17 Filament de del

Country Status (1)

Country Link
WO (1) WO2025201945A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2778502A2 (fr) * 2013-03-13 2014-09-17 Palo Alto Research Center Incorporated Ampoule à DEL avec support structurel
WO2020239655A1 (fr) * 2019-05-29 2020-12-03 Signify Holding B.V. Dispositif d'éclairage comprenant un filament électroluminescent
US20220082214A1 (en) 2019-01-21 2022-03-17 Signify Holding B.V. Color tunable filament lamp
WO2022233715A1 (fr) * 2021-05-07 2022-11-10 Signify Holding B.V. Filament de diode électroluminescente
WO2022268500A1 (fr) * 2021-06-25 2022-12-29 Signify Holding B.V. Agencement de filaments de diode électroluminescente

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2778502A2 (fr) * 2013-03-13 2014-09-17 Palo Alto Research Center Incorporated Ampoule à DEL avec support structurel
US20220082214A1 (en) 2019-01-21 2022-03-17 Signify Holding B.V. Color tunable filament lamp
WO2020239655A1 (fr) * 2019-05-29 2020-12-03 Signify Holding B.V. Dispositif d'éclairage comprenant un filament électroluminescent
WO2022233715A1 (fr) * 2021-05-07 2022-11-10 Signify Holding B.V. Filament de diode électroluminescente
WO2022268500A1 (fr) * 2021-06-25 2022-12-29 Signify Holding B.V. Agencement de filaments de diode électroluminescente

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