EP3745013A1 - Appareil à ampoule lumineuse - Google Patents

Appareil à ampoule lumineuse Download PDF

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Publication number
EP3745013A1
EP3745013A1 EP19186814.0A EP19186814A EP3745013A1 EP 3745013 A1 EP3745013 A1 EP 3745013A1 EP 19186814 A EP19186814 A EP 19186814A EP 3745013 A1 EP3745013 A1 EP 3745013A1
Authority
EP
European Patent Office
Prior art keywords
light bulb
shaped
flexible filament
central support
bulb apparatus
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.)
Granted
Application number
EP19186814.0A
Other languages
German (de)
English (en)
Other versions
EP3745013B1 (fr
Inventor
Chenjun Wu
Chengzong Wu
Hongkui JIANG
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.)
Xiamen Eco Lighting Co Ltd
Original Assignee
Xiamen Eco Lighting Co Ltd
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 Xiamen Eco Lighting Co Ltd filed Critical Xiamen Eco Lighting Co Ltd
Publication of EP3745013A1 publication Critical patent/EP3745013A1/fr
Application granted granted Critical
Publication of EP3745013B1 publication Critical patent/EP3745013B1/fr
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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
    • 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
    • F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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 is related to a light bulb apparatus, and is more particularly related to a light bulb apparatus with a flexible filament.
  • LED light bulbs have advantages over traditional lighting solutions such as incandescent and fluorescent lighting because they are more durable, use less energy, operate longer, and may be controlled to deliver light of various colors. Therefore LED light bulbs with flexible filaments are becoming more popular as replacements for older lighting systems.
  • a traditional way to produce the light bulb with a flexible filament is to provide a few fixation rings on a central support of the light bulb, manually bend the flexible filament to pass through each of the fixation rings, and then fix the flexible filament.
  • Such design requires a lot of manual work, so the production efficiency is low and the workmanship quality cannot be assured.
  • One objective of the invention is to provide a light bulb apparatus with a flexible filament;
  • the new design proposed by the present disclosure includes a novel expanding structure to help improve the production efficiency and quality, and also reduce the manufacturing cost of the light bulb apparatus.
  • the light bulb apparatus includes a light bulb shell, a bulb head, and a heat sink cup.
  • the heat sink cup has a first end and a second end. The first end of the heat sink cup is connected to the light bulb shell, and the second end of the heat sink cup is connected to the bulb head.
  • the light bulb apparatus includes a flexible filament for emitting light, and a central support.
  • the flexible filament has a first terminal and a second terminal.
  • the central support provides a first electrode electrically connected to the first terminal of the flexible filament, and provides a second electrode electrically connected to the second terminal of the flexible filament.
  • the light bulb apparatus further includes an expanding structure and a driver module.
  • the expanding structure is mechanically coupled to the central support, and includes a plurality of holding portions for holding the flexible filament.
  • the driver module is electrically connected to the bulb head and the central support for providing electrical power to the first electrode and the second electrode of the central support.
  • the expanding structure includes two bending strips symmetrically or asymmetrically arranged with respect to a central axis of the central support. And each of the bending strips has a plurality of concave portions as the holding portions to hold the flexible filament.
  • the concave portions may be substantially U-shaped, C-shaped, or G-shaped.
  • the expanding structure includes a plurality of support rods arranged along a central axis of the central support.
  • Each of the support rods has a first end mechanically coupled to the central support, and has a second end extending outward from the central support to hold the flexible filament.
  • the second ends of the support rods may be substantially U-shaped, C-shaped, or G-shaped.
  • the expanding structure includes a block-shaped pillar having a concave slot.
  • the concave slot is spiral on the surface of the block-shaped pillar for holding the flexible filament.
  • the expanding structure may be made of metal, ceramic, glass, or plastic material.
  • the block-shaped pillar may be hollow or solid inside.
  • the expanding structure includes a plurality of support boards.
  • Each of the support boards has a plurality of concave portions as the holding portions to hold the flexible filament.
  • the concave portions may be substantially U-shaped, C-shaped, or G-shaped.
  • the central support and the expanding structure may be made of a same material and may be integrally formed.
  • the light bulb apparatus includes at least two flexible filaments connected in series or in parallel.
  • the two flexible filaments may emit light of different colors or different color temperatures.
  • the holding portions include a blocking structure for preventing the flexible filament from falling out of the holding portions.
  • the holding portions may be G-shaped for preventing the flexible filament from falling out of the holding portions.
  • FIG. 1 to 4 illustrate the first embodiment of the present disclosure.
  • the light bulb apparatus 100 includes a light bulb shell 1, a bulb head 7, and a heat sink cup 6.
  • the heat sink cup 6 has a first end and a second end. As shown in FIG. 1 and FIG. 2 , the first end of the heat sink cup 6 is connected to the light bulb shell 1, and the second end of the heat sink cup 6 is connected to the bulb head 7.
  • the bulb head 7 may be a traditional Edison bulb head configured to receive external power source for the light bulb apparatus 100.
  • the light bulb apparatus 100 includes a flexible filament 2 and a central support 4.
  • the flexible filament 2 includes one or more LED chips for emitting light.
  • the flexible filament 2 has a first terminal and a second terminal, and the central support 4 provides a first electrode 41 electrically connected to the first terminal of the flexible filament 2, and provides a second electrode 42 electrically connected to the second terminal of the flexible filament 2.
  • the first electrode 41 and the second electrode 42 are physically located away from each other.
  • the light bulb apparatus 100 further includes an expanding structure 3 and a driver module 5.
  • the expanding structure 3 is mechanically coupled to the central support 4, and includes a plurality of holding portions for holding the flexible filament 2.
  • the driver module 5 includes a driver circuit board and electrical components arranged on the driver circuit board.
  • the driver module 5 is electrically connected to the bulb head 7 and the central support 4, and the driver module 5 is capable of providing electrical power to the first electrode 41 and the second electrode 42 of the central support 4.
  • the first electrode 41 and the second electrode 42 may be made of metal material.
  • the bulb head 7 includes a metal tip 71 located distal to the heat sink cup 6. The bulb head 7 and the metal tip 71 work together to receive external power for the light bulb apparatus 100.
  • the central support 4 extends and a part of the central support 4 is located inside the light bulb shell 1, so the flexible filament 2 could be physically located inside the light bulb shell 1.
  • the expanding structure 3 includes two bending strips 31 symmetrically arranged with respect to a central axis 9 of the central support 4.
  • the two bending strips 31 are mechanically coupled to the central support 4.
  • Each of the bending strips 31 has a plurality of concave portions 35 as the holding portions to hold the flexible filament 2.
  • the flexible filament 2 is bent to spiral along a central axis 9 of the central support 4 and is held and fixed by the concave portions 35.
  • the concave portions 35 are substantially U-shaped in this embodiment so as to properly hold and fix the flexible filament 2. Comparing to a traditional way which includes bending the filament to pass through the fixation rings, the new way proposed by the present disclosure is more efficient and reliable, and may reduce the manufacturing cost and improve the production quality.
  • the central support 4 has a horn-type bottom.
  • the horn-type bottom is connected to the light bulb shell 1 by high melting-point soldering, and the flexible filament 2 is sealed inside the light bulb shell 1.
  • the heat dissipation gas may be helium, or a combination of helium and oxygen.
  • the central support 4 and the heat sink cup 6 may be connected to each other by glue, by buckles, or by screw thread.
  • the heat sink cup 6 may be made of plastic material.
  • the heat sink cup 6 and the light bulb shell 1 may be connected to each other by glue.
  • the first terminal of the flexible filament 2 is soldered to the first electrode 41. Then the flexible filament 2 is bent to spiral and to be held by the concave portions 35 of the expanding structure 3. And then the second terminal of the flexible filament 2 is soldered to the second electrode 42.
  • the flexible filament 2 may be first bent to spiral and to be held by the concave portions 35 of the expanding structure 3. And then the first terminal and the second terminal of the flexible filament 2 are soldered to the first electrode 41 and the second electrode 42 respectively.
  • the bending strips 31 may be made of metal, plastic, or glass material. If the bending strips 31 are made of metal material, the bending strips 31 may be connected to the central support 4 by plug/socket and soldering. If the bending strips 31 are made of plastic or glass material, the bending strips 31 may be connected to the central support 4 by plug/socket and glue. In another embodiment, there may be more than two bending strips 31, for example, there may be four or six bending strips 31 used in the light bulb apparatus 100.
  • FIG. 5 illustrates a second embodiment of the present disclosure.
  • the second embodiment is similar to the first embodiment, but the two bending strips 31 are mechanically coupled to the first electrode 41 and the second electrode 42.
  • the bending strip 31 may be made of metal, plastic, or glass material. With the arrangement proposed by the second embodiment, the cost for installing the bending strips 31 may be reduced, and it may be more convenient for soldering or gluing the bending strips 31 to the first electrode 41 and the second electrode 42.
  • FIG. 6 illustrates a third embodiment of the present disclosure.
  • the expanding structure 3 includes a plurality of support rods 32 arranged along the central axis 9 of the central support 4.
  • the support rods 32 are spaced an equal distance apart from each other on the surface of the central support 4.
  • Each of the support rods 32 has a first end mechanically coupled to the central support 4, and has a second end extending outward from the central support 4 to hold the flexible filament 2.
  • the second ends of the support rods 32 may be bent into substantial U-shape or C-shape, with the open ends of the U-shape or the C-shape facing toward the central axis 9 of the central support 4. It is noted that since the open ends of the U-shape or the C-shape face toward the central axis 9 of the central support 4, the open ends could not be shown in FIG. 6 .
  • the support rods 32 may be made of metal, plastic, or glass material. With such arrangement, the material required for composing the expanding structure 3 may be reduced, and the process for installing the expanding structure 3 may also be simplified. In this embodiment, there are at least two groups of support rods 32 arranged parallel to each other so as to properly support the flexible filament 2. The support rods 32 may be connected to the central support 4 by soldering, glue, or screw-thread.
  • FIG. 7 illustrates the fourth embodiment of the present disclosure.
  • the fourth embodiment is similar to the first embodiment shown in FIG. 4 , but the bending strips 31 are asymmetrically arranged with respect to the central axis 9 of the central support 4.
  • the bending strips 31 may be made of metal, plastic, or glass material.
  • the bending strips 31 are arranged surrounding the central axis 9 of the central support 4 as a circle. In this embodiment, there may be an odd number, for example three or five, of bending strips 31 used in the light bulb apparatus 100.
  • FIG. 8 illustrates the fifth embodiment of the present disclosure.
  • the expanding structure 3 includes a block-shaped pillar 33 having a concave slot 35.
  • the concave slot 35 is arranged spiral on the surface of the block-shaped pillar 33 for holding the flexible filament 2.
  • the block-shaped pillar 33 may be hollow inside, so the overall weight of the light bulb apparatus 100 could be reduced.
  • the block-shaped pillar 33 may also be solid inside.
  • the block-shaped pillar 33 may be made of metal, ceramic, glass, or plastic material.
  • the block-shaped pillar 33 may be made of transparent glass or plastic material.
  • the block-shaped pillar 33 may be installed onto the central support 4 by glue.
  • the expanding structure 3 includes a plurality of support boards 34.
  • Each of the support boards 34 has a plurality of concave portions 35 at its edge area as the holding portions to hold the flexible filament 2.
  • the concave portions 35 may be substantially U-shaped or C-shaped.
  • the support boards 34 may be made of metal, ceramic, glass, or plastic material.
  • the support boards 34 are made of transparent glass or plastic material.
  • the support boards 34 are connected to the central support 4 by soldering or glue. In another embodiment, there may be three, five, or six support boards 34 used in the light bulb apparatus 100.
  • the central support 4 and the expanding structure 3 may be made of a same material and may be integrally formed. In this way, the manufacturing cost for the light bulb apparatus 100 may be further reduced.
  • the holding portions are substantially U-shaped or C-shaped.
  • the size of the open ends of the U-shapes or the C-shapes should be suitable to properly hold and fix the filament 2.
  • the holding portions may further include a blocking structure so as to prevent the flexible filament 2 from falling out of the holding portions.
  • the holding portions may be G-shaped, so the holding portions would include a blocking structure to properly prevent the flexible filament 2 from falling out of the holding portions.
  • the light bulb apparatus 100 may include two or more flexible filaments 2 connected in parallel. Accordingly, there are two or more sets of the first electrodes 41 and the second electrodes 42, with each set of the first electrode 41 and the second electrode 42 electrically connected to one of the flexible filaments 2.
  • Each of the flexible filaments 2 includes one or more LED chips capable of emitting light. With such arrangement, if one flexible filament 2 fails, the other ones may continue to provide lighting.
  • each of the flexible filaments 2 may include one or more LED chips capable of emitting light of different colors (e.g., red, green, or blue%) or different color temperatures (e.g., 3000K, 4500K, or 6000K).
  • the light bulb apparatus 100 may emit light of different color or different color temperature by providing power to one or a combination of the flexible filaments 2.
  • the two or more flexible filaments 2 may be connected in series.
  • the light bulb apparatus of the present disclosure includes an expanding structure having holding portions to properly hold the flexible filament.
  • the expanding structure may be bending strips, support rods, block-shaped pillar, or support boards ... etc.
  • the expanding structure according the present disclosure is easy to implement and install, and may be applied in various lighting apparatuses. High production quality and manufacturing efficiency of the light bulb apparatus may be achieved.
EP19186814.0A 2019-05-29 2019-07-17 Appareil à ampoule lumineuse Active EP3745013B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920794019.6U CN209926065U (zh) 2019-05-29 2019-05-29 一种柔性灯丝灯

Publications (2)

Publication Number Publication Date
EP3745013A1 true EP3745013A1 (fr) 2020-12-02
EP3745013B1 EP3745013B1 (fr) 2022-10-26

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ID=67437898

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EP19186814.0A Active EP3745013B1 (fr) 2019-05-29 2019-07-17 Appareil à ampoule lumineuse

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EP (1) EP3745013B1 (fr)
JP (1) JP3225330U (fr)
CN (1) CN209926065U (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170051878A1 (en) * 2015-08-17 2017-02-23 Jiaxing Super Lighting Electric Appliance Co., Ltd Led light bulb and led filament thereof
WO2018041826A1 (fr) * 2016-09-01 2018-03-08 Philips Lighting Holding B.V. Dispositif électroluminescent
CN108050399A (zh) * 2017-12-06 2018-05-18 广明源光科技股份有限公司 一种灯丝灯结构
CN207584401U (zh) * 2017-12-06 2018-07-06 广明源光科技股份有限公司 新型灯丝灯结构
US20180347802A1 (en) * 2017-05-31 2018-12-06 Xiamen Eco Lighting Co. Ltd. Gas-free light bulb device
WO2019015763A1 (fr) * 2017-07-20 2019-01-24 Explorentis Lampe à del dotée d'un filament de del flexible et procédé de fabrication associé
CN109723986A (zh) * 2018-12-19 2019-05-07 浙江亿米光电科技有限公司 一种灯丝缠绕芯柱的球泡灯

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916677B (zh) * 2018-07-21 2020-08-14 杭州恒星高虹光电科技股份有限公司 柔性led灯丝灯

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170051878A1 (en) * 2015-08-17 2017-02-23 Jiaxing Super Lighting Electric Appliance Co., Ltd Led light bulb and led filament thereof
WO2018041826A1 (fr) * 2016-09-01 2018-03-08 Philips Lighting Holding B.V. Dispositif électroluminescent
US20180347802A1 (en) * 2017-05-31 2018-12-06 Xiamen Eco Lighting Co. Ltd. Gas-free light bulb device
WO2019015763A1 (fr) * 2017-07-20 2019-01-24 Explorentis Lampe à del dotée d'un filament de del flexible et procédé de fabrication associé
CN108050399A (zh) * 2017-12-06 2018-05-18 广明源光科技股份有限公司 一种灯丝灯结构
CN207584401U (zh) * 2017-12-06 2018-07-06 广明源光科技股份有限公司 新型灯丝灯结构
CN109723986A (zh) * 2018-12-19 2019-05-07 浙江亿米光电科技有限公司 一种灯丝缠绕芯柱的球泡灯

Also Published As

Publication number Publication date
JP3225330U (ja) 2020-02-27
CN209926065U (zh) 2020-01-10
EP3745013B1 (fr) 2022-10-26

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