EP3073175B1 - Light-emitting diode light bulb structure - Google Patents

Light-emitting diode light bulb structure Download PDF

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Publication number
EP3073175B1
EP3073175B1 EP16156859.7A EP16156859A EP3073175B1 EP 3073175 B1 EP3073175 B1 EP 3073175B1 EP 16156859 A EP16156859 A EP 16156859A EP 3073175 B1 EP3073175 B1 EP 3073175B1
Authority
EP
European Patent Office
Prior art keywords
light
horizontal bar
emitting module
bar assembly
led
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.)
Not-in-force
Application number
EP16156859.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3073175A1 (en
Inventor
David Huang
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.)
Liquidleds Lighting Corp
Original Assignee
Liquidleds Lighting Corp
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 Liquidleds Lighting Corp filed Critical Liquidleds Lighting Corp
Publication of EP3073175A1 publication Critical patent/EP3073175A1/en
Application granted granted Critical
Publication of EP3073175B1 publication Critical patent/EP3073175B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light-emitting diode (LED) light bulb structure and, more particularly, to an LED filament light bulb with a mounting structure of multiple layers of juxtaposed LED filaments.
  • LED light-emitting diode
  • a conventional LED filament light bulb includes a glass body 10a, a glass stem 20a, a first power wire 21a, a second power wire 22a, a glass bar 100, a glass head 120, multiple filaments 101 ⁇ 108, a first lower loop frame 124, a second lower loop frame 126 and two upper loop frames 122a, 122b.
  • the glass body 10a is sealed, is vacuumed internally, and is filled with inert gas for heat dissipation.
  • the glass stem 20a is mounted inside the glass body 10a and is located on a bottom of the glass body 10a.
  • the first power wire 21 a and the second power wire 22a are mounted in the glass stem 20a and protrude beyond the glass stem 20a. Exposed portions of the first power wire 21a and the second power wire 22a are respectively connected to the first lower loop frame 124 and the second lower loop frame 126.
  • the glass bar 100 is formed on and vertically protrudes from a top end of the glass stem 20a.
  • the glass head 120 is mounted on a top of the glass bar 100 and is coupled to the upper loop frames 122a, 122b through four sticks for the upper loop frames 122a, 122b to surround the glass head 120.
  • Top ends of one half of the multiple filaments 101 ⁇ 104 are coupled to one of the upper loop frames 122a, and bottom ends of the half of the multiple filaments 101 ⁇ 104 are coupled to the first lower loop frame 124.
  • Top ends of the other half of the multiple filaments 105 ⁇ 108 are coupled to the other upper loop frame 122b and bottom ends of the half of the multiple filaments 105 ⁇ 108 are coupled to the second lower loop frame 126.
  • the conventional LED filament light bulb has the following drawbacks.
  • An objective of the present invention is to provide an LED light bulb structure with at least one light-emitting module, in which the at least one light-emitting module is arranged in a modular form and stacked to each other for easy expansion thereof and multiple LED filaments in each light-emitting module are connected in series to ensure increase in luminance and LED light bulb structures customized in terms of different luminance and different wattage according to desired shapes of the lamp body.
  • the light-emitting diode (LED) light bulb structure includes a glass stem, a first power wire, a second power wire, a first conducting bar, a second conducting bar and a first light-emitting module.
  • the invention is defined by the subject-matter of the independent claims.
  • the first power wire and the second power wire are mounted in the glass stem with one end of each of the first power wire and the second power wire protruding beyond the glass stem.
  • the first conducting bar has one end thereof connected with the end of the first power wire protruding beyond the glass stem.
  • the second conducting bar has one end thereof connected with the end of the second power wire protruding beyond the glass stem.
  • the first light-emitting module has a top horizontal bar assembly, a bottom horizontal bar assembly, multiple fixing balls and multiple LED filaments.
  • One end of each of the top horizontal bar assembly and the bottom horizontal bar assembly is connected with the first conducting bar, and the other end of each of the horizontal bar assembly and the bottom horizontal bar assembly is connected with the second conducting bar.
  • the multiple fixing balls are mounted on the top horizontal bar assembly and the bottom horizontal bar assembly and are spaced apart to form multiple breakpoints.
  • the multiple LED filaments are mounted between the top horizontal bar assembly and the bottom horizontal bar assembly to form an alternating U-shaped series-connected circuit loop passing through the multiple LED filaments and the top horizontal bar assembly and the bottom horizontal bar assembly.
  • the light-emitting modules are more structurally stable and can be expanded based on users' demands, thereby enhancing luminance of the stackable light-emitting modules, facilitating the manufacture of the LED light bulbs, and effectively raising the production yield of the LED light bulbs.
  • the multiple fixing balls serve both as breakpoints of the power supply circuit loop and as elements good for building the light-emitting modules with higher structural strength.
  • the present invention is to provide a mounting structure of multiple layers of light-emitting diode (LED) filaments inside an LED filament light bulb.
  • the mounting structure can be expanded by using a modular arrangement with multiple LED modules stacked to each other, thereby effectively enhancing luminance of the LED filament light bulb and tailoring to the design of the LED filament light bulb with different lengths and sizes.
  • a first embodiment of an LED light bulb structure in accordance with the present invention includes a first light-emitting module 40, a glass body 10, a glass stem 20, a first power wire 21, a second power wire 22, a first conducting bar 31 and a second conducting bar 32.
  • the glass body 10 is sealed by internally vacuuming the glass body 10 and internally filling inert gas for heat dissipation.
  • the glass stem 20 is mounted inside the glass body 10 and is located on a bottom of the glass body 10.
  • the first power wire 21 and the second power wire 22 are mounted in the glass stem 20 and serve to connect to a power source underneath the glass stem 20.
  • One end of each of the first power wire 21 and the second power wire 22 extends beyond the glass stem 20.
  • the first conducting bar 31 is mounted on and protrudes upwards from a top of the glass stem 20.
  • the second conducting bar 32 is mounted on and protrudes upwards from the top of the glass stem 20.
  • the first light-emitting module 40 includes a top horizontal bar assembly and a bottom horizontal bar assembly. One end of each of the top horizontal bar assembly and the bottom horizontal bar assembly is connected with the first conducting bar 31, and the other end of each of the top horizontal bar assembly and the bottom horizontal bar assembly is connected with the second conducting bar 32.
  • the first light-emitting module 40 includes multiple LED filaments 41, 43, 45, 47. The multiple LED filaments 41, 43, 45, 47 are mounted between the top horizontal bar assembly and the bottom horizontal bar assembly and are spaced apart from each other and constitute a series-connected structure in collaboration with the top horizontal bar assembly and the bottom horizontal bar assembly.
  • the first conducting bar 31 is L-shaped. A top end of the first conducting bar 31 is bent to extend toward the second conducting bar 32 and a middle portion of the top end of the first conducting bar 31 is curved to increase a structural strength of the first conducting bar 31. A bottom end of the first conducting bar 31 is connected with the first power wire 21.
  • the second conducting bar 32 is L-shaped and a bottom end of the second conducting bar 32 is connected with the second power wire 22.
  • the first conducting bar 31 and the second conducting bar 32 form a support frame for the first light-emitting module 40 and a second light-emitting module 50. Meanwhile, the first conducting bar 31 and the second conducting bar 32 are made of a metal material, which is preferred to be a nickel-iron alloy.
  • first conducting bar 31 and the second conducting bar 32 can also function as conducting paths for the power source in connection with the first conducting bar 31 and the second conducting bar 32 to transmit power to the first light-emitting module 40 and the second light-emitting module 50.
  • the top horizontal bar assembly has multiple upper bars 34a, 34c, 34e disconnected from each other and the bottom horizontal bar assembly has multiple lower bars 34b, 34d disconnected from each other.
  • a fixing ball 42, 46 is connected between each two adjacent upper bars 34a, 34c, 34e, a fixing ball 44 is connected between the two lower bars, a fixing ball 48a is connected between the first conducting bar 31 and an adjacent lower bar 34b, and a fixing ball 48b is connected between the second conducting bar 32 and an adjacent lower bar 34d.
  • the multiple fixing balls 42, 44, 46, 48a, 48b correspond to multiple breakpoints to form a single alternating U-shaped circuit loop in the first light-emitting module 40 for current to pass through the LED filaments 41, 43, 45, 47 and the top horizontal bar assembly and the bottom horizontal bar assembly.
  • the top bars 34a, 34c, 34e of the top horizontal bar assembly and the lower bars 34b, 34d of the lower horizontal bar assembly are made of a metal material, which is preferred to be a nickel-plated iron wire, for the purpose of having desired hardness and being a good conductor.
  • the fixing balls 42, 44, 46, 48a, 48b are made of glass.
  • the present embodiment may further include at least one second light-emitting module 50 having an identical structure as the at least one first light-emitting module 40.
  • the at least one light-emitting module is stacked to each other in an upward direction as a building under construction supported by reinforced concrete columns, and may include multiple second light-emitting modules 50.
  • the present invention can effectively enhance lumen of the LED filament light bulb and facilitate the manufacture of light bulbs with high luminance.
  • the first conducting bar 31 and the second conducting bar 32 are securely connected with the top bars 34a, 34c, 34e, the lower bars 34b, 34d and the fixing balls 42, 44, 46, 48a, 48b to provide a single circuit loop for lighting up the LED filaments 41, 43, 45, 47 and ensure a modular, stable and robust hardware supporting structure.
  • the fixing ball 42 serves to disconnect circuit loops, stands for one breakpoint, and is used to reinforce the hardware supporting structure.
  • the fixing ball 42 is securely connected with two metal wires A, B.
  • the metal wire A is divided into two sections A1, A2, in which the section A1 is a Dument wire buried in the fixing ball 42 and the section A2 is made of nickel-plated iron and is securely connected with the section A1.
  • the metal wire B is divided into two sections B1, B2, in which the section B1 is a Dument wire buried in the fixing ball 42 and the section B2 is made of nickel-plated iron and is securely connected with the section B1.
  • the metal wires A1, B1 include but are not limited to Dument wire
  • the metal wires A2, B2 include but are not limited to nick-iron alloy wires.
  • a second embodiment of an LED filament light bulb in accordance with the present invention differs from the foregoing embodiment in a third light-emitting module 60 and a fourth light-emitting module 90.
  • the third light-emitting module 60 includes an upper ring 60a, a lower ring 60b, multiple fixing balls 71-80 and multiple LED filaments 61-68.
  • the first conducting bar 31 and the second conducting bar 32 are securely connected with two portions of the upper ring 60a and two portions of the lower ring 60b.
  • the fixing balls 71-80 are respectively formed on the upper ring 60a and the lower ring 60b, are spaced apart from each other, and are taken as breakpoints on the upper ring 60a and the lower ring 60b.
  • the LED filaments 61-68 are securely connected between the upper ring 60a and the lower ring 60b to form an alternating U-shaped circuit loop for current to flow through the series-connected LED filaments and the upper ring 60a and the lower ring 60b.
  • Two portions of the upper ring 60a are securely connected with two upper brackets 36a, 36b.
  • One of the upper brackets 36a is securely connected with the first conducting bar 31.
  • the other upper bracket 36b is securely connected with the second conducting bar 32.
  • Two portions of the lower ring 60b are securely connected with two lower brackets 37a, 37b.
  • One of the lower brackets 37a is securely connected with the first conducting bar 31.
  • the other lower bracket 37b is securely connected with the second conducting bar 32.
  • the upper brackets 36a, 36b and the lower brackets 37a, 37b are provided for the purpose of supporting the upper ring 60a and the lower ring 60b instead of electrically connecting the upper ring 60a and the lower ring 60b with the first conducting bar 31 and the second conducting bar 32.
  • the fourth light-emitting module 90 is structurally the same as the third light-emitting module 60.
  • the design adopting modular light-emitting modules and the first conducting bar 31 and the second conducting bar 32 with both supporting and conducting functions allows to stack multiple light-emitting modules for luminance increase, facilitate the manufacture, and raise the production yield.
  • the curved portion of the first conducting bar 31 adaptive to a shape of the glass body 10 enhances structural stability of the LED filament light bulb.
  • a shape of the first conducting bar 31 can be adjusted according to the shape of the glass body 10. Besides being the breakpoints of the alternating U-shape loop, the fixing balls 44, 46, 48a, 48b, 71-80 also increase a combined strength of the hardware supporting structure.

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)
EP16156859.7A 2015-08-11 2016-02-23 Light-emitting diode light bulb structure Not-in-force EP3073175B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW104126163A TWI575184B (zh) 2015-08-11 2015-08-11 LED bulb structure

Publications (2)

Publication Number Publication Date
EP3073175A1 EP3073175A1 (en) 2016-09-28
EP3073175B1 true EP3073175B1 (en) 2017-08-23

Family

ID=55407031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16156859.7A Not-in-force EP3073175B1 (en) 2015-08-11 2016-02-23 Light-emitting diode light bulb structure

Country Status (3)

Country Link
EP (1) EP3073175B1 (zh)
ES (1) ES2641726T3 (zh)
TW (1) TWI575184B (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180153025A1 (en) * 2016-11-29 2018-05-31 Shang-Jie Lin Light bulb having timing capability
DE102017107004A1 (de) * 2017-03-31 2018-10-04 Osram Opto Semiconductors Gmbh Filamentstruktur, Beleuchtungseinrichtung mit Filamentstruktur und Verfahren zur Herstellung einer Beleuchtungseinrichtung mit Filamentstruktur
KR101838856B1 (ko) * 2017-09-14 2018-04-27 현진우 Ac 구동방식 벌브형 led 램프
EP3599413A1 (en) * 2018-07-27 2020-01-29 BGT Materials Limited Filament structure of led light bulb

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201037212A (en) * 2009-04-02 2010-10-16 Liquidleds Lighting Corp LED light bulb
TWM389204U (en) 2010-06-03 2010-09-21 Liquidleds Lighting Corp LED illumination lamp
RU2546469C2 (ru) * 2010-09-08 2015-04-10 Чжэцзян Ледисон Оптоэлектроникс Ко., Лтд. Светодиодная лампа
CN103899943A (zh) * 2012-12-28 2014-07-02 浙江锐迪生光电有限公司 一种u型灯管led节能灯
US9115875B2 (en) * 2013-06-21 2015-08-25 Huga Optotech Inc. LED light lamps using stack effect for improving heat dissipation
TWI599745B (zh) * 2013-09-11 2017-09-21 晶元光電股份有限公司 可撓式發光二極體組件及發光二極體燈泡
CN203836872U (zh) * 2014-03-28 2014-09-17 东莞市雷明灯照明科技有限公司 一种新型led灯芯
CN203963564U (zh) * 2014-05-28 2014-11-26 东莞市雷明灯照明科技有限公司 一种led灯芯
CN203940268U (zh) * 2014-05-15 2014-11-12 南通南洋照明科技有限公司 一种led灯丝灯泡
CN204420696U (zh) * 2015-03-23 2015-06-24 湖州和华照明电器有限公司 新型led观赏灯
CN104791627B (zh) * 2015-04-21 2018-10-12 贵州光浦森光电有限公司 一种led灯丝灯的构建方法及led灯丝灯

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
TWI575184B (zh) 2017-03-21
TW201544753A (zh) 2015-12-01
ES2641726T3 (es) 2017-11-13
EP3073175A1 (en) 2016-09-28

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