WO2025202023A1 - Agencement de filament de del - Google Patents

Agencement de filament de del

Info

Publication number
WO2025202023A1
WO2025202023A1 PCT/EP2025/057649 EP2025057649W WO2025202023A1 WO 2025202023 A1 WO2025202023 A1 WO 2025202023A1 EP 2025057649 W EP2025057649 W EP 2025057649W WO 2025202023 A1 WO2025202023 A1 WO 2025202023A1
Authority
WO
WIPO (PCT)
Prior art keywords
led filament
light
led
filament component
component
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/EP2025/057649
Other languages
English (en)
Inventor
Ties Van Bommel
Erik Petrus Johannes MALLENS
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 WO2025202023A1 publication Critical patent/WO2025202023A1/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
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials
    • 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
    • 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
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • 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
    • 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 arrangement.
  • the invention further relates to a lamp and a luminaire comprising such a LED filament arrangement.
  • a LED filament is providing LED filament light and comprises a plurality of light emitting diodes (LEDs) arranged in a linear array.
  • the LED filament has a length L and a width W, wherein L > 5W.
  • the LED filament may be arranged in a straight configuration or in a non-straight configuration such as for example a curved configuration, a 2D/3D spiral, or a helix.
  • the LEDs are arranged on an elongated carrier like for instance a carrier, that may be rigid (made from, e.g., a polymer, glass, quartz, metal, or sapphire) or flexible (e.g., made of a polymer or metal, e.g., a film or foil).
  • 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.
  • carrier and elongated carrier may be used interchangeably, such that the elongated carrier may also simply be denoted carrier.
  • the LED filament may comprise an encapsulant at least partially covering at least part of the plurality of LEDs.
  • the encapsulant may also at least partially cover at least one of the first major surface and second major surface.
  • the encapsulant may be a polymer material which may be flexible such as for example a silicone.
  • the LEDs may be arranged for emitting LED light, e.g., of different colors or spectrums.
  • the encapsulant may comprise a luminescent material that is configured to convert at least a part of the LED light into converted light.
  • the luminescent material may be a phosphor such as an inorganic phosphor and/or quantum dots or rods (QDs).
  • QDs quantum dots or rods
  • the term ‘luminescent material’ may also refer to a combination of two or more luminescent materials.
  • the absolute value of the difference between the second correlated color temperature CCT2 and the first correlated color temperature CCT1 may be not more than 200 K. In other words, ⁇ CCT2 — CCT1 ⁇ ⁇ 200 K.
  • this combination of three LED filament components allows to further provide different light recipes which can be used in different applications and/or situations such as increased white rendering and color saturation.
  • first and second elongated carriers together form one elongated carrier, for instance by the first and second elongated carriers being formed in one piece.
  • a compact LED filament arrangement is provided.
  • the LED filament arrangement may further comprise a fourth LED filament component for generating fourth LED filament component light.
  • the fourth LED filament component light is white light having a fourth color point with coordinates x4 and y4, and with a fourth correlated color temperature CCT4.
  • the above LED filament arrangement having a combination of four LED filament components, has at least one of an even further improved optical performance and an even further improved functionality.
  • This combination of four LED filaments components allows to have a further increased trade-off between efficiency and light quality.
  • this combination of four LED filament components allows to even further provide different light recipes which can be used in different applications and/or situations such as increased white rendering and color saturation.
  • the plurality of third LEDs and the plurality of fourth LEDs may be arranged alternatingly on the second elongated carrier along a length direction of the first elongated carrier.
  • the plurality of third LEDs and the plurality of fourth LEDs may be arranged side-by-side on the second elongated carrier along a length direction of the second elongated carrier.
  • the LED filament arrangement comprises first, second, third, and fourth LED filament components
  • it may further comprise a second LED filament comprising the third LED filament component and the fourth LED filament component, wherein the third encapsulant and the fourth encapsulant are arranged alternatingly along a length direction (L2) of the second LED filament.
  • L2 length direction
  • the first LED filament component and the third LED filament component may be identical, and the second LED filament component and the fourth LED filament component may be identical.
  • the first LED filament component and the fourth LED filament component may be identical, and the second LED filament component and the third LED filament component may be identical.
  • LED filament arrangement providing LED filament arrangement light with an improved homogeneity and/or intensity is provided. Thereby, the performance of the LED filament arrangement is improved.
  • the first LED filament component, the second LED filament component, and, where provided, the third LED filament component and the fourth LED filament component, may be provided as separate LED filaments, and may for instance be arranged at a distance of at least 5 mm from each other.
  • the invention further relates to a lighting device comprising a LED filament arrangement according to the invention.
  • the first LED filament component light has a first luminous flux (LF1)
  • the second LED filament component light has second luminous flux (LF2)
  • the lighting device may further comprise a controller configured to control a ratio of the first luminous flux (LF1) of the first LED filament component light and the second luminous flux (LF2) of the second LED filament component light.
  • the controller is configured to control LF1/LF2.
  • the obtained effect is that one can (gradually) change the light recipe and tune the efficiency versus light quality.
  • the controller may further be configured to control a ratio of the third luminous flux (LF3) of the third LED filament component light and the fourth luminous flux (LF4) of the fourth LED filament component light.
  • the controller is configured to control LF3/LF4.
  • the controller may be configured to control the ratio of the third luminous flux (LF3) of the third LED filament component light and the fourth luminous flux (LF4) of the fourth LED filament component light such that, in a first operational mode, the ratio is not more than 0.5, and in a second operational mode, it is at least 2.
  • the controller is configured to control LF3/LF4 such that, in a first operational mode, LF3/LF4 ⁇ 0.5, and in a second operational mode, LF3/LF4 > 2.
  • the invention further relates to a LED filament lamp comprising a LED filament arrangement according to the invention.
  • the LED filament lamp may further comprise (i) a light transmissive envelope at least partially enclosing the LED filament arangement, and (ii) a base for electrically and mechanically connecting the LED filament lamp to a socket.
  • the invention further relates to a luminaire comprising a LED filament lamp according to the invention, or comprising a LED filament arrangement according to the invention.
  • Fig. 1 A shows a top view of a light emitting diode, LED, filament arrangement according to the invention.
  • Fig. IB shows a cross-sectional side view of the section marked B seen in the direction of the arrow B’ in Fig. 1 A of the LED filament arrangement according to Fig. 1 A.
  • Fig. 2 shows a top view of another LED filament arrangement according to the invention.
  • Fig. 5 shows a color space diagram showing a line indicating the black body locus BBL.
  • Fig. 6 shows a close up of the area VI indicated in Fig. 5 and showing correlated color temperatures, CCT, for a LED filament arrangement according to the invention.
  • Fig. 7 shows a further close up of the area VII indicated in Fig. 6 and showing correlated color temperatures, CCT, for a LED filament arrangement according to the invention.
  • Fig. 8 shows a schematical side view of a lamp comprising a LED filament according to the invention.
  • Fig. 9 shows a schematical side view of a luminaire comprising a lamp and a LED filament according to the invention.
  • Fig. 1 A shows a top view of a light emitting diode, LED, filament arrangement 1 according to the invention
  • Fig. IB shows a cross-sectional side view of the section marked B as seen in the direction of the arrow B’ in Fig. 1 A of the LED filament arrangement 1.
  • the LED filament arrangement 1 comprises a first LED filament component 2 configured to, in operation, generate first LED filament component light 23, and a second LED filament component 3 configured to, in operation, generate second LED filament component light 33.
  • the first LED filament component 2 comprises an array of a plurality of first LEDs 21.
  • the array of a plurality of first LEDs 21 is configured to, in operation, emit first LED light.
  • the first LED light may be blue light having a first dominant peak wavelength, XL
  • the array of the plurality of first LEDs 21 is arranged on a first elongated carrier 91.
  • the first luminescent material 24 comprises a first green-yellow phosphor and a first orange-red phosphor.
  • the first orange-red phosphor comprises one or more of an oxynitride phosphor and a nitride phosphor.
  • the first LED filament component light 23 comprises the first luminescent material light.
  • the first LED filament component light 23 comprises a combination of the first luminescent material light and part of the first LED light.
  • the first elongated carrier 91 comprises a first major surface 93 and a second major surface 94.
  • the array of the plurality of first LEDs 21 and the array of the plurality of second LEDs 31 are arranged on the same major surface, in the embodiment shown the first major surface 93.
  • the array of the plurality of first LEDs 21 and the array of the plurality of second LEDs 31 are further arranged altematingly along a length direction LC of the first elongated carrier 91.
  • the second LED filament component 3 further comprises a second encapsulant 32.
  • the second encapsulant 32 covers the plurality of second LEDs 31 at least partially.
  • the second encapsulant 32 further covers the first elongated carrier 91 partially.
  • the second encapsulant 32 comprises a second luminescent material 34.
  • the second luminescent material 34 is configured to convert at least a part of the second LED light into second luminescent material light.
  • the second luminescent material 34 may comprise a second green-yellow phosphor and a second orange-red phosphor.
  • the first green-yellow phosphor may be different from the second green-yellow phosphor.
  • the first orange-red phosphor is different from the second orange-red phosphor.
  • the second orange- red phosphor may comprise a phosphor of the type M’ x M2-2xAX6 doped with a tetravalent manganese cation, wherein M’ is a cation of an alkaline earth metal, M comprises a cation of an alkali metal, and x is selected from the range of 0-1, wherein A is a tetravalent cation, for instance comprising one or more of silicon and titanium, wherein X is a monovalent anion, at least comprising fluorine.
  • preferred phosphors which belong to the above class of phosphors are IGSiFr,: Mn 4+ , K ⁇ GeFe: Mn 4+ , and K ⁇ TiFe: Mn 4+ .
  • Fig. 2 shows another LED filament arrangement 100 according to the invention.
  • the LED filament arrangement 100 differs from the LED filament arrangement 1 described above with reference to Figs. 1 A and IB in virtue of the following features.
  • the first LED filament component 2 and the third LED filament component 4 may be identical, and the second LED filament component 3 and the fourth LED filament component 5 may be identical.
  • the first LED filament component 2 and the fourth LED filament component 5 may be identical, and the second LED filament component 3 and the third LED filament component 4 may be identical.
  • the lamp 300 further comprises a driver or controller 305 configured for controlling the plurality of LEDs 4 of the LED filament 1, 100, 101, 102.
  • the controller 305 is configured to power the plurality of LEDs 4 via electrical circuitry (not visible on the figures) of the LED filament 1, 100, 101, 102.
  • the LED filament 1, 100, 101, 102 may also comprise a controller 6, which may or may not be separate from the controller 305.
  • the controller 305 and the controller 6 of the LED filament 1 may be integrated into one and the same driver or controller, or they may be mutually separate units.

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

L'invention se rapporte à un agencement de filament de DEL (1 ; 100 ; 101 ; 102) présentant une performance optique améliorée et/ou une fonctionnalité améliorée. L'agencement de filament de DEL comprend un premier composant de filament de DEL (2) permettant de générer une lumière de premier composant de filament de DEL (23), et un second composant de filament de DEL (3) permettant de générer une lumière de second composant de filament de DEL (33). Le premier composant de filament de DEL (2) comprend (i) une pluralité de premières DEL (21) permettant d'émettre une lumière de premières DEL, la pluralité de premières DEL (21) étant agencée sur un premier support allongé (91), et (ii) un premier agent d'encapsulation (22) recouvrant au moins partiellement chacune de la pluralité de premières DEL (21) et le premier support allongé (91). Le second composant de filament de DEL (3) comprend (i) une pluralité de secondes DEL (31) permettant d'émettre une lumière de secondes DEL, la pluralité de secondes DEL (31) étant agencée sur le premier support allongé (91), et (ii) un second agent d'encapsulation (32) recouvrant au moins partiellement chacune de la pluralité de secondes DEL (31) et le premier support allongé (91). La lumière de premier composant de filament de DEL (23) est une lumière blanche ayant un premier point de couleur ayant des coordonnées x1 et γ1, et une première température de couleur corrélée CCT1, et la lumière de second composant de filament de DEL (33) est une lumière blanche ayant un second point de couleur avec des coordonnées 2 et 2, et une seconde température de couleur corrélée CCT2, où [CCT2 − CCT1] ≤ 300 K, et γ2 - γ1 ≥ 0,03.
PCT/EP2025/057649 2024-03-25 2025-03-20 Agencement de filament de del Pending WO2025202023A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24165946.5 2024-03-25
EP24165946 2024-03-25

Publications (1)

Publication Number Publication Date
WO2025202023A1 true WO2025202023A1 (fr) 2025-10-02

Family

ID=90473481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/057649 Pending WO2025202023A1 (fr) 2024-03-25 2025-03-20 Agencement de filament de del

Country Status (1)

Country Link
WO (1) WO2025202023A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120326627A1 (en) * 2011-06-14 2012-12-27 Luminus Devices, Inc. Systems and methods for controlling white light
JP2018041843A (ja) * 2016-09-07 2018-03-15 パナソニックＩｐマネジメント株式会社 発光装置、及び、照明装置
US10260683B2 (en) * 2017-05-10 2019-04-16 Cree, Inc. Solid-state lamp with LED filaments having different CCT's
CN208871526U (zh) * 2018-08-23 2019-05-17 山东晶泰星光电科技有限公司 一种色温可调的led灯丝及其led灯丝灯
US10375786B2 (en) * 2015-06-24 2019-08-06 Kabushiki Kaisha Toshiba White light source system
CN112443802A (zh) * 2019-08-28 2021-03-05 漳州立达信光电子科技有限公司 发光系统及灯具
WO2022207603A1 (fr) 2021-04-01 2022-10-06 Signify Holding B.V. Amélioration optique et thermique d'un filament multicanal à deux côtés
US20230358368A1 (en) * 2020-03-02 2023-11-09 Signify Holding B.V. Tunable led filament

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120326627A1 (en) * 2011-06-14 2012-12-27 Luminus Devices, Inc. Systems and methods for controlling white light
US10375786B2 (en) * 2015-06-24 2019-08-06 Kabushiki Kaisha Toshiba White light source system
JP2018041843A (ja) * 2016-09-07 2018-03-15 パナソニックＩｐマネジメント株式会社 発光装置、及び、照明装置
US10260683B2 (en) * 2017-05-10 2019-04-16 Cree, Inc. Solid-state lamp with LED filaments having different CCT's
CN208871526U (zh) * 2018-08-23 2019-05-17 山东晶泰星光电科技有限公司 一种色温可调的led灯丝及其led灯丝灯
CN112443802A (zh) * 2019-08-28 2021-03-05 漳州立达信光电子科技有限公司 发光系统及灯具
US20230358368A1 (en) * 2020-03-02 2023-11-09 Signify Holding B.V. Tunable led filament
WO2022207603A1 (fr) 2021-04-01 2022-10-06 Signify Holding B.V. Amélioration optique et thermique d'un filament multicanal à deux côtés

Similar Documents

Publication Publication Date Title
CN103311415B (zh) 发光器件及使用其的照明装置和系统
JP6363061B2 (ja) 白色発光モジュール
JP5654328B2 (ja) 発光装置
US8702271B2 (en) Phosphor-centric control of color of light
JP7546592B2 (ja) きらめきをもたらす光反射性粒子を有するｌｅｄフィラメント
CN110612610A (zh) 可调白光照明系统
JP2012113959A (ja) 発光装置
EP3987218A1 (fr) Dispositif d'éclairage à température de couleur réglable comprenant différents filaments de del
WO2025202023A1 (fr) Agencement de filament de del
WO2017053589A1 (fr) Lampes linéaires à base de led et agencements d'éclairage
JP2017069284A (ja) 発光装置及び照明装置
US20230015999A1 (en) Lighting device
WO2025201945A1 (fr) Filament de del
EP4680887A1 (fr) Lampe à filament à del
EP4136938B1 (fr) Lampe à filament à del à température de couleur contrôlable fournissant une meilleure qualité de lumière
WO2025252451A1 (fr) Agencement de filament de del
KR102556270B1 (ko) 엘이디 햇빛등 및 엘이디 햇빛등기구
WO2025157711A1 (fr) Agencement de filament de del
WO2025073514A1 (fr) Lampe à filament à del
WO2025149450A1 (fr) Lampe à filament à del
WO2025021734A1 (fr) Filament de led
CN121941877A (zh) Led灯丝
WO2026017504A1 (fr) Filament de del
WO2025073520A1 (fr) Filament à del
WO2025149434A1 (fr) Lampe à filaments de del

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25712625

Country of ref document: EP

Kind code of ref document: A1