EP3290773B1 - Led-glühlampe und herstellungsverfahren dafür - Google Patents

Led-glühlampe und herstellungsverfahren dafür Download PDF

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Publication number
EP3290773B1
EP3290773B1 EP16187181.9A EP16187181A EP3290773B1 EP 3290773 B1 EP3290773 B1 EP 3290773B1 EP 16187181 A EP16187181 A EP 16187181A EP 3290773 B1 EP3290773 B1 EP 3290773B1
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EP
European Patent Office
Prior art keywords
light bulb
power
power wire
led light
wires
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.)
Active
Application number
EP16187181.9A
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English (en)
French (fr)
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EP3290773A1 (de
Inventor
Szu-Min Fan
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.)
Double Good Co
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Double Good Co
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Priority to EP16187181.9A priority Critical patent/EP3290773B1/de
Priority to DK16187181.9T priority patent/DK3290773T3/da
Publication of EP3290773A1 publication Critical patent/EP3290773A1/de
Application granted granted 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
    • 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
    • F21K9/90—Methods of manufacture

Definitions

  • the invention relates to lighting fields, and more particularly, to an LED light bulb and a fabrication method thereof.
  • LED light-emitting diode (LED) light bulbs have many advantages such as lasting longer, more energy-efficient, more environmental friendly and reacting more rapidly, which make LED lighting gradually replace traditional lighting.
  • step S24 as shown in Figure 2-4 , a sealer is used to seal the glass envelope 25, and an exhausting machine is used to discharge redundant gas from the glass envelope 25 through the exhaust tube 211.
  • step S25 any unnecessary portion of the exhaust tube 211 is removed, and a screw base 26 is provided, making the two power wires 23 electrically connected to the screw base 26 respectively, thereby forming a finished LED light bulb 2 shown in Figure 2-5 .
  • the stem 21 must be provided to support the LED filament 22, making the fabrication method of the LED light bulb 2 complicated and not cost-effective.
  • the LED light bulb 2 also requires an internal space 22 for accommodating a front end 213 of the stem 21, such that the LED light bulb 2 cannot be significantly reduced in length and cannot replace all the small-size traditional light bulbs.
  • US 2015/069442 A1 discloses a method of molding a component including the steps of providing a plurality of fibers, applying the fibers with a low temperature sizing to form a plurality of sized fibers, forming a preform from the plurality of sized fibers, placing the preform in a mold, and de-sizing the preform by heating the mold to an initial temperature.
  • CN 203 907 532 U discloses a LED filament comprising multiple substrates, flexible wires capable of connecting the substrates in series, pins at the ends of the substrates at the two ends of the LED filament, and light emitting units arranged on the substrates.
  • US 2013/155683 A1 discloses a light bulb shaped lamp including a hollow globe having an opening; an LED module having a base platform and an LED chip mounted on the base platform, the LED module being housed in the globe; a stem extending from the opening of the globe to the vicinity of the LED module; and a regulating component.
  • WO 2013/014821 A1 discloses a photovoltaic module, which includes a photovoltaic member, a moisture-resistant layer, a mounting frame covering and a buffer layer.
  • CN 101 968 181 A discloses LED bulbs, which include a light-transmissive blister, with a vent pipe, electrical lead wires and brackets stem, at least one LED light bar, a drive, an electrical connector; LED light bar is fixed core column, and electric lead and drive it through the stem of the electrode.
  • CN 102 980 054 B discloses a LED bulb, including lamp, lamp shells, constant current power supply, wires, lamp and LED light source, the wire is at least 2 LED light source between the wires within cavity shade.
  • an LED light bulb including: a power wire support set, an LED filament, a glass envelope and a screw base.
  • the power wire support set includes a first power wire, a second power wire and at least one fixed block.
  • the fixed block fixes the first and second power wires to make them form a power wire supporting structure.
  • An LED filament having two ends respectively soldered to a first end of the first power wire and a first end of the second power wire, making the LED filament supported by the power wire supporting structure; a glass envelope including a head part having a receiving space for receiving the LED filament, and a tail part tapered to clamp and fix second ends of the first and second power wires in position; and a screw base electrically connected to the second ends of the first and second power wires.
  • the LED light bulb has a plurality of fixed blocks.
  • the fixed block is made of glass.
  • the first and second power wires are dumet wires.
  • the screw base is soldered to the second ends of the first and second power wires.
  • the invention further provides A fabrication method of an LED light bulb, including the steps of: providing an LED filament and a power wire support set, wherein the power wire support set includes a first power wire, a second power wire and at least one fixed block, and the fixed block fixes the first and second power wires to make them form a power wire supporting structure; soldering two ends of the LED filament to a first end of the first power wire and a first end of the second power wire respectively to form a semi-finished LED light bulb; providing a glass envelope, wherein the glass envelope has a receiving space in a head part thereof and a passage in a tail part thereof, allowing the LED filament to pass through the passage to be received in the receiving space; tapering the tail part of the glass envelope and sealing the passage to clamp second ends of the first and second power wires; and providing a screw base, and electrically connecting the second ends of the first and second power wires respectively to the screw base, to form a finished LED light bulb.
  • the fabrication method further includes the step of: discharging redundant gas from the receiving space through the passage. Removing an unnecessary portion of the tail part of the glass envelope.
  • the invention provides an LED light bulb and a fabrication method thereof, wherein two power wires for supplying electricity are used in place of the stem in the conventional LED light bulb.
  • the power wires support and fix an LED filament in position.
  • the invention desirably simplifies fabrication processes of the LED light bulb and thereby reduces its fabrication costs.
  • the LED light bulb of the invention does not require an internal space for accommodating the stem, and thus its length may be significantly reduced, making the LED light bulb ideally used as a small-size light bulb.
  • the fabrication method of the LED light bulb according to the invention includes the following steps shown in Figure 3 .
  • an LED filament 12 and a power wire support set 11 are provided.
  • the power wire support set 11 includes a first power wire 111, a second power wire 112 and at least one fixed block 113.
  • the first and second power wires 111, 112 are electrical conductors and can be dumet wires.
  • step S12 as shown in Figure 4-2 , the LED filament 12 has two ends thereof respectively soldered to a first end E1 of the first power wire 111 and a first end E1 of the second wire 112, such that the LED filament 12 may obtain electricity through the first and second power wires 111, 112 and support from the power wire supporting structure to be properly fixed in position.
  • a glass envelope 13 is provided, wherein a head part 131 of the glass envelope 13 has a receiving space 1311, and a tail part 132 of the glass envelope 13 has a passage 1321 connected to the receiving space 1311.
  • the LED filament 12 and the fixed block 113 may pass through the passage 1321 to be received in the receiving space 1311 and thus be protected by the glass envelope 13.
  • step S14 as shown in Figure 4-4 , redundant gas in the receiving space 1311 is discharged through the passage 1321 so as to prevent moisture from staying in the operating environment of the LED filament 12. Then the tail part 132 of the glass envelope 13 is tapered and the passage 1321 is sealed in a manner to clamp second ends E2 of the first and second power wires 111, 112. Any unnecessary portion of the tail part 132 of the glass envelope 13 is removed.
  • step S15 as shown in Figure 4-5 , a screw base 14 is provided.
  • the second ends E2 of the first and second power wires 111, 112 are electrically connected to the screw base 14 respectively, thereby forming a finished LED light bulb 16.
  • FIG 4-5 also shows the structure of the LED light bulb according to the invention.
  • the LED light bulb 1 includes: a power wire support set 11, an LED filament 12, a glass envelope 13 and a screw base 14.
  • the LED filament 12 has an operating voltage of from 8V to 240V.
  • the power wire support set 11 includes a first power wire 111, a second power wire 112 and at least one fixed block 113.
  • the first and second power wires 111, 112 provide a path of electricity to the LED filament 12.
  • the screw base 14 is used to electrically connect an external power source.
  • the first and second power wires 111, 112 may be made of dumet wires.
  • the first and second power wires 111, 112 have first ends E1 thereof being soldered to two ends of the LED filament 12 respectively and have second ends E2 thereof being electrically connected to the screw base 14 respectively.
  • the fixed block 113 may be, for example, a glass ball, for fixing the first and second power wires 111, 112 to make them form a power wire supporting structure, which is used to provide support for the LED filament 12.
  • the fixed block 113 can have a ball shape or any other shape that is easily made.
  • a head part 131 of the glass envelope 13 has a receiving space 1311 where the LED filament 12 and the fixed block 113 are received.
  • the receiving space 1311 may be filled with inert gas.
  • a tail part 132 of the glass envelope 13 is tapered to clamp the second ends E2 of the first and second power wires 111, 112 so as to properly fix the first and second power wires 111, 112 in position and keep the receiving space 1311 intact.
  • the invention provides an LED light bulb and a fabrication method thereof, wherein power wires for supplying electricity to an LED filament are used to support and fix the LED filament in position, such that a stem used in a conventional LED light bulb is not needed.
  • This desirably simplifies fabrication processes of the LED light bulb and thereby reduces its fabrication costs.
  • the LED light bulb of the invention does not require an internal space for accommodating the stem, and thus its length may be significantly reduced, making the LED light bulb ideally used as a small-size light bulb.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Claims (6)

  1. LED Glühbirne (1), einschließend:
    einen Stromdraht-Tragsatz (11), der einen ersten Stromdraht (111), einen zweiten Stromdraht (112) und wenigstens einen festen Block (113) einschließt, wobei der feste Block (113) den ersten und den zweiten Stromdraht (111, 112) befestigt, sodass diese eine Stromdraht-Tragstruktur ausbilden;
    ein LED Filament (12), welches zwei Enden aufweist, die jeweils an ein erstes Ende (E1) des ersten Stromdrahts (111) und an ein erstes Ende (E1) des zweiten Stromdrahts (112) gelötet sind,
    wobei das LED-Filament (12) so gemacht wird, sodass es von der Stromdraht-Tragstruktur gestützt wird, wobei die LED Glühbirne (1) dadurch gekennzeichnet ist, dass das LED Filament (12) keinen Innenraum benötigt, um einen Stamm aufzunehmen, der zur Stützung des LED-Filaments vorgesehen ist, und dass der feste Block (113) aus Glas hergestellt ist, und der erste und der zweite Stromdraht (111, 112) Dumet-Drähte sind;
    eine Glashülle (13), die einen Kopfteil (131), welcher einen Aufnahmeraum (1311) aufweist, zur Aufnahme des LED Filaments (12) und des festen Blocks (113), und einen Endteil (132) einschließt, der sich verjüngt, um die zweiten Enden (E2) des ersten und des zweiten Stromdrahts (111, 112) in Position einzuklemmen und zu befestigen; und
    einen Schraubsockel (14), der elektrisch mit den zweiten Enden (E2) des ersten und zweiten Stromdrahts (111, 112) verbunden ist.
  2. LED Glühbirne (1) gemäß Anspruch 1, wobei die LED Glühbirne (1) eine Vielzahl an festen Blöcken (113) aufweist.
  3. LED Glühbirne (1) gemäß Anspruch 1, wobei der Schraubsockel (14) an die zweiten Enden (E2) des ersten und zweiten Stromdrahts (111, 112) gelötet ist.
  4. Herstellungsverfahren einer LED Glühbirne (1), das die Schritte einschließt:
    Bereitstellen eines LED Filaments (12) und eines Stromdraht-Tragsatzes (11), wobei der Stromdraht-Tragsatz (11) einen ersten Stromdraht (111), einen zweiten Stromdraht (112) und wenigstens einen festen Block (113) einschließt, und der feste Block (113) den ersten und den zweiten Stromdraht (111, 112) befestigt, dass diese eine Stromdraht-Tragstruktur ausbilden;
    Löten zweier Enden des LED Filaments (12) an ein erstes Ende (E1) des ersten Stromdrahts (111) bzw. an das erste Ende (E1) des zweiten Stromdrahts (112), um eine halbfertige LED Glühbirne (15) auszubilden,
    wobei das Herstellungsverfahren, gekennzeichnet ist, durch Einrichten, dass das LED-Filament (12) durch die Stromdraht-Tragstruktur derart gestützt wird, dass das LED-Filament (12) keinen Innenraum zur Aufnahme eines Stamms benötigt, der zur Stützung des LED-Filaments vorgesehen ist, und dadurch dass der feste Block (113) aus Glas hergestellt ist und der erste und der zweite Stromdraht (111, 112) Dumet-Drähte sind;
    Bereitstellen einer Glashülle (13), wobei die Glashülle (13) einen Aufnahmeraum (1311) in einem Kopfteil (131) davon und in einen Durchgang (1321) in einem Endteil (132) davon aufweist,
    Zulassen, dass das LED-Filament (12) und der feste Block (113) den Durchgang (1321) durchlaufen, um in dem Aufnahmeraum (1311) aufgenommen zu werden;
    Verjüngen des Endteils (132) der Glashülle (13) und Abdichten des Durchgangs (1321), um die zweiten Enden (E2) des ersten und zweiten Stromdrahts (111, 112) einzuklemmen;
    und Bereitstellen eines Schraubsockel (14), und elektrisches Verbinden der zweiten Enden (E2) des ersten und zweiten Stromdrahts (111, 112) jeweils mit dem Schraubsockel (14), um eine fertige LED-Glühbirne (16) auszubilden.
  5. Herstellungsverfahren gemäß Anspruch 4, weiterhin den Schritt einschließend:
    Abführen von redundantem Gas aus dem Aufnahmeraum (1311) durch den Durchgang (1321).
  6. Herstellungsverfahren gemäß Anspruch 4, weiterhin den Schritt einschließend: Entfernen eines unnötigen Abschnitts des Endteils (132) der Glashülle (13).
EP16187181.9A 2016-09-05 2016-09-05 Led-glühlampe und herstellungsverfahren dafür Active EP3290773B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16187181.9A EP3290773B1 (de) 2016-09-05 2016-09-05 Led-glühlampe und herstellungsverfahren dafür
DK16187181.9T DK3290773T3 (da) 2016-09-05 2016-09-05 Led-pære og fremgangsmåde til fremstilling deraf

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16187181.9A EP3290773B1 (de) 2016-09-05 2016-09-05 Led-glühlampe und herstellungsverfahren dafür

Publications (2)

Publication Number Publication Date
EP3290773A1 EP3290773A1 (de) 2018-03-07
EP3290773B1 true EP3290773B1 (de) 2019-05-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12270516B2 (en) * 2022-12-06 2025-04-08 Polyrocks Technology (Hunan) Co., Ltd. Christmas LED bulb manufacturing process

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Publication number Priority date Publication date Assignee Title
TWI421439B (zh) * 2008-03-21 2014-01-01 Liquidleds Lighting Corp Glass package LED bulb and its manufacturing method
CN101968181B (zh) * 2010-09-08 2013-03-20 浙江锐迪生光电有限公司 一种高效率led灯泡
US20120098429A1 (en) * 2010-10-22 2012-04-26 Ching-Long Liang Led lamp with heat dissipation
EP2636939B1 (de) * 2010-11-04 2019-04-10 Panasonic Intellectual Property Management Co., Ltd. Glühbirnenförmige leuchte und beleuchtungsvorrichtung
JP5129413B1 (ja) * 2011-07-22 2013-01-30 パナソニック株式会社 照明用光源および照明装置
CN102980054B (zh) * 2011-09-07 2014-10-22 王丽娜 一种led灯泡
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
CN203907532U (zh) * 2014-05-30 2014-10-29 惠州市华瑞光源科技有限公司 Led灯丝及应用该led灯丝的led灯泡

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12270516B2 (en) * 2022-12-06 2025-04-08 Polyrocks Technology (Hunan) Co., Ltd. Christmas LED bulb manufacturing process

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Publication number Publication date
DK3290773T3 (da) 2019-07-29
EP3290773A1 (de) 2018-03-07

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