CN106641778A - Bulb provided with lamp filaments of self-forming structure - Google Patents
Bulb provided with lamp filaments of self-forming structure Download PDFInfo
- Publication number
- CN106641778A CN106641778A CN201611012300.7A CN201611012300A CN106641778A CN 106641778 A CN106641778 A CN 106641778A CN 201611012300 A CN201611012300 A CN 201611012300A CN 106641778 A CN106641778 A CN 106641778A
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- CN
- China
- Prior art keywords
- self
- bulb
- forming
- filaments
- 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.)
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Classifications
-
- 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
- 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
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
Abstract
The invention discloses a bulb provided with lamp filaments of a self-forming structure. The bulb comprises a bulb shell, and the shell is made of transparent or locally-transparent glass, can be in any shape and can be internally inflated or not internally inflated. A power supply driver is arranged at the rear end of the bulb shell. A power supply positive electric pole and a power supply negative electric pole are arranged at the two ends of the power supply driver. The bulb further comprises one or more self-forming LED flexible lamp filaments which are arranged in the bulb shell transversely or vertically or obliquely. A positive electrode provided with a through hole and a negative electrode provided with a through hole are arranged at the left end and the right end of each lamp filament correspondingly and electrically connected with the power supply positive electric pole and the power supply negative electric pole through electric welding and the through holes correspondingly. According to the bulb, the LED flexible lamp filaments of the self-forming structure are adopted, an original supporting structure which is located in a bulb and used for supporting LED flexible lamp filaments is omitted, the internal structure of the bulb is greatly simplified, the machining efficiency is improved, and the manufacturing cost is reduced; and meanwhile, the structure that the lamp filaments are attached to the inner wall of the bulb is adopted, so that the heat dissipation performance of the bulb shell is optimized, and the overall heat dissipation performance of the bulb is improved accordingly.
Description
Technical field
The present invention relates to field of illuminating lamps, more particularly to a kind of bulb with self-forming structured filaments, belong to LED illumination
Technical field.
Background technology
LED/light source is sufficient, luminous uniform due to luminosity, and power consumption is few, can be rated as green energy resource, therefore progressively takes
For using the tengsten lamp for a century, with the further development of lighting, LED/light source gradually becomes bar from spot light
The strip flexibility filament of shape light source, even various shapes；LED flexibilities filament can be in the case of same area, and wattage increases
Even several times are added times, possesses very strong practicality, this is that traditional barcode LED lamp bar to be reached；It is more normal at present
See for helical form LED flexibility filament, its structure is attractive in appearance, and the wattage that lights is big.But in actual use, it was also found that due to spiral
Filament is flexible filament, after being installed in bulb, needs supporting construction to fix its position in bulb, at present more
It is common for horizontal, vertical, oblique glass wick column supporting construction, and the metal connecting filament being fixed in glass wick column
（Such as tungsten filament）, both combine for fixing flexible filament, so as to cause bulb structure excessively complicated, and mounting process
Complexity, installation cost increases, and working (machining) efficiency is reduced.
Along with the increase of wattage, another question is also following --- the problem for radiating, current LED bulb
Radiating generally adopts two ways, and one kind is to add radiating gas, and a kind of is to install the purpose that heat pipe reaches radiating, such as such as Zhejiang
Jiang Ruidi gives birth to Photoelectric Co., Ltd. in Patent No. 201210063705.9 filed in 2012 days 12（A kind of LED bulb）'s
In patent, just elaborate that " LED light emitting sources are made up of at least one transparency LED Column being luminous；LED Column being luminous include：Insert in outside pillar
The high thermal conductivity transparent pipe on surface "；In two ways, the former causes processing technology to complicate, and the latter causes complex structure, enters
And cause cost to increase.
The content of the invention
The present invention is aiming at the problems referred to above, proposes a kind of bulb with self-forming structured filaments, the filament in the bulb
Without supporting construction, simple structure, processing cost is low, high in machining efficiency, and perfect heat-dissipating.
To reach above-mentioned purpose, the present invention proposes a kind of bulb with self-forming structured filaments, including a transparent or office
Made by the transparent glass in portion, arbitrary shape, inner inflatable or non-aerating bulb housing, the bulb housing rear end is provided with power supply
Drive, the power drives two ends are provided with positive source electric pole and power cathode electric pole, also including one or more laterally, vertically
Or the angularly disposed self-forming LED flexibility filaments in bulb housing, the left and right end of the flexible filaments of the self-forming LED is respectively equipped with
Positive pole with through hole and negative pole, the positive pole, negative pole are respectively with positive source electric pole, power cathode electric pole by electric welding, perforation
Mode be electrically connected.
Preferably as the present invention, the self-forming LED flexibilities filament includes a metal or non-metal base plate, the metal
Or the front or the back side or two-sided while be disposed with upside-down mounting circuit and flip LED chips of non-metal base plate, while in upside-down mounting circuit
And cloth is brilliant and lays fluorescent material on flip LED chips.
Preferably as the present invention, the self-forming LED flexibilities filament includes the arc self-forming structure of arbitrary shape, appoints
Acute angle, the obtuse angle shape self-forming structure of meaning shape, and the self-forming structure that above-mentioned three combines.
Preferably as the present invention, the self-forming LED flexibilities filament is the LED of concentric circles or non-concentric helical structure
Flexible filament, the diameter of the LED coiled filaments of the concentric circles helical structure between 10-50mm, the concentric circles or non-same
The distance of each spiral is between 3-25mm in the LED flexibility filaments of heart circle helical structure.
Preferably as the present invention, the self-forming LED flexibility filaments are flexible for the LED of V-type or W types or Wave-shaped structural
Filament.
In present configuration, described one or more concentric circles or non-concentric helical structure LED flexibility filaments or V
The LED flexibility filaments of type or W types or Wave-shaped structural are pasting or the structure of natural extension is attached at bulb housing inwall.
Further, the self-forming LED flexibility filament fronts or the back side or two-sided by single fluorescent material, special fluorescence
Powder, realizes the self-forming LED flexibility filaments of multiple color, and such as green self-forming LED flexibility filaments, red self-forming LED are flexible
Filament.
The invention also discloses a kind of another kind of structure of the bulb with self-forming structured filaments, including one self-powered
Self-forming LED flexibility filaments and it is one transparent or local transparent, made by glass, arbitrary shape, inner inflatable or do not fill
The bulb housing of gas, the bulb housing bottom is provided with positive source electric pole and power cathode electric pole, the self-forming LED flexibilities filament
Left and right end is respectively equipped with the positive pole with through hole and negative pole, and the positive pole, negative pole are electric with positive source electric pole, power cathode respectively
Bar is electrically connected by way of electric welding, perforation.
Preferably, the self-powered self-forming LED flexibility filaments include a metal or non-metal base plate, the metal
Or the front or the back side or two-sided while be disposed with upside-down mounting circuit, power drives part and flip LED chips of non-metal base plate, together
When cloth is brilliant and lays fluorescent material on upside-down mounting circuit, power drives part and flip LED chips.
The invention also discloses a kind of mould for making self-forming LED flexibility filaments, including a metal or plastic base, institute
The one or both sides for stating metal or plastic base are provided with arbitrary shape closing or nonocclusive groove, and the width of the groove and
The width and equal length of length and LED flexibility filaments.
The present invention is eliminated and be originally used in bulb support LED flexibility filaments using the LED flexibility filaments of self-forming structure
Supporting construction, so as to enormously simplify bulb structure, improve working (machining) efficiency, reduce manufacturing cost；Meanwhile, adopt
Filament is attached at the structure of bulb inner wall, whole so as to increased bulb by being optimal of heat dispersion of Lamp bulb case itself
The heat dispersion of body.
Description of the drawings
Shown in Fig. 1 is the surface structure schematic diagram of self-forming LED flexibility filaments and bulb in the present invention；
Shown in Fig. 2 is the surface structure schematic diagram of the luminous self-forming LED flexibilities filament of one side in the present invention；
Shown in Fig. 3 is the surface structure schematic diagram of double-side self-forming LED flexibilities filament in the present invention；
Shown in Fig. 4 is the surface structure schematic diagram of W types self-forming LED flexibility filaments and bulb in the present invention；
Shown in Fig. 5 is the surface structure schematic diagram of non-concentric self-forming LED flexibility filaments and bulb in the present invention；
Shown in Fig. 6 is the surface structure schematic diagram of wall-attaching type self-forming LED flexibility filaments and bulb in the present invention；
Shown in Fig. 7 is that the surface structure of the luminous self-forming LED flexibility filaments of one side in the present invention with power drives shows
It is intended to；
Shown in Fig. 8 be in the present invention with power drives double-side self-forming LED flexibility filament surface structure show
It is intended to；
Shown in Fig. 9 is the surface structure schematic diagram of the mould that self-forming LED flexibility filaments are made in the present invention.
Wherein, 1, bulb housing；2nd, power drives；3rd, positive source electric pole；4th, power cathode electric pole；5th, self-forming LED is soft
Property filament；6th, substrate；7th, upside-down mounting circuit；8th, flip LED chips；9th, conducting resinl；10th, fluorescent material；11st, W types self-forming filament；
12nd, non-concentric self-forming filament；13rd, power drives part；14th, pedestal；15th, groove.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of bulb with self-forming structured filaments, including transparent or local transparent a glass makes
, arbitrary shape, inner inflatable or non-aerating bulb housing 1, the rear end of the bulb housing 1 is provided with power drives 2, drives in power supply
Dynamic 2 two ends are provided with positive source electric pole 3 and power cathode electric pole 4, while also including that one or more is horizontal, vertical or oblique
The self-forming LED flexibility filaments 5 being arranged in bulb housing 1, the left and right end of self-forming LED flexibility filaments 5 is respectively equipped with band logical
The positive pole and negative pole in hole, positive pole, negative pole are respectively with positive source electric pole 3, power cathode electric pole 4 by way of electric welding, perforation
It is electrically connected.
From Fig. 2 and Fig. 3, in the present invention, it is preferred to self-forming LED flexibility filament include a metal or nonmetallic
The front or the back side of substrate 6, the metal or nonmetallic substrate 6 are two-sided while being disposed with upside-down mounting circuit 7 and flip LED chips
8, while cloth crystalline substance and laying fluorescent material 10 on upside-down mounting circuit 7 and flip LED chips 8.After the completion of said structure, you can according to
It is actually needed and is fabricated to variously-shaped self-forming LED flexibility filaments 5.
In the present invention, the self-forming LED flexibilities filament 5 being previously mentioned can include that the arc self-forming of arbitrary shape is tied
Structure, the acute angle of arbitrary shape, obtuse angle shape self-forming structure, and the self-forming structure that above-mentioned three combines.
In the present invention, it is preferred to self-forming LED flexibility filaments 5 be V-type or W types or Wave-shaped structural LED flexible lights
Silk, shown in Fig. 4 is shape when self-forming LED flexibilities filament 5 is in W type self-forming filaments 11 in the present invention.
In the present invention, it is preferred to self-forming LED flexibility filaments 5 are flexible for the LED of concentric circles or non-concentric helical structure
Filament, the diameter of the LED coiled filaments of preferred concentric circles helical structure is between 10-50mm, and the concentric circles or non-concentric
The distance of each spiral is between 3-25mm in the LED flexibility filaments of circle helical structure.In Fig. 5, shown be in the present invention from
Shape when shaping LED flexibility filaments 5 are in non-concentric self-forming filament 12.
In present configuration, one or more concentric circles or non-concentric helical structure LED flexibility filaments or V-type or W
The LED flexibility filaments of type or Wave-shaped structural are pasting or the structure of natural extension is attached at bulb housing inwall.Shown in Fig. 6
In being the present invention, the self-forming LED flexibility filaments 5 of concentric circles are connected to the knot of the inwall of bulb housing 1 in adherent mode
Structure.
From using for upper, the front or the back side or two-sided by single fluorescence of the self-forming LED flexibility filaments 5 in the present invention
Powder, special fluorescent material, it is possible to achieve the self-forming LED flexibility filaments of the self-forming LED flexibility filaments 5 of multiple color, such as green
5th, red self-forming LED flexibilities filament 5, such purposes more extensively will such as be applied to laboratory, be applied to planting etc.
Deng.
The invention also discloses a kind of another kind of structure of the bulb with self-forming structured filaments, including one self-powered
Self-forming LED flexibility filaments 5 and are transparent or local transparent, made by glass, arbitrary shape, inner inflatable or do not fill
The bulb housing 1 of gas, the bottom of the bulb housing 1 is provided with positive source electric pole 3 and power cathode electric pole 4, in self-forming LED flexible lights
The left and right end of silk 5 is respectively equipped with the positive pole with through hole and negative pole, positive pole, negative pole respectively with positive source electric pole 3, power cathode
Electric pole 4 is electrically connected by way of electric welding, perforation.
As shown in FIG. 7 and 8, preferred self-powered self-forming LED flexibility filaments 5 include a metal or nonmetallic base
The front or the back side of plate 6, the metal or nonmetallic substrate 6 are two-sided while being disposed with upside-down mounting circuit 7, power drives part 13
And flip LED chips 8, while on upside-down mounting circuit 7, power drives part 13 and flip LED chips 8 cloth crystalline substance conducting resinl 9 and
Lay fluorescent material 10.
The benefit that power drives are arranged on filament is the overall structure that LED bulb is further simplified, without in bulb housing
Bottom arrange driving power supply, greatly save cost.
As shown in Figure 9, the present invention on the basis of the above, also discloses a kind of mould for making self-forming LED flexibility filaments 5
Have, including the one or both sides of the pedestal 14 of the pedestal 14 of a metal or plastics, the metal or plastics are provided with arbitrary shape closing
Or nonocclusive groove 15, and the width and equal length of the width and length and self-forming LED flexibility filament 5 of groove 15.It is logical
Cross the mould, than it is more convenient and can mass ground make self-forming LED flexibility filament 5.
Generally speaking, the present invention is, using the LED flexibility filaments of self-forming structure, to eliminate and be originally used in bulb support
The supporting construction of LED flexibility filaments, so as to enormously simplify bulb structure, improves working (machining) efficiency, reduces and is manufactured into
This；Meanwhile, the structure of bulb inner wall is attached at using filament, by being optimal of heat dispersion of Lamp bulb case itself, so as to
Increased the overall heat dispersion of bulb.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the know-why without departing from the present invention, some improvement and modification can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of bulb with self-forming structured filaments, including made by transparent or local transparent a glass, arbitrary shape,
Inner inflatable or non-aerating bulb housing, the bulb housing rear end is provided with power drives, and the power drives two ends are provided with power supply
Positive pole electric pole and power cathode electric pole, it is characterised in that horizontal, vertical or angularly disposed in bulb housing also including one or more
Interior self-forming LED flexibility filaments, the left and right end of the flexible filaments of the self-forming LED is respectively equipped with the positive pole with through hole and negative pole,
Or positive pole made by iron-nickel alloy and negative pole, the positive pole, negative pole lead to respectively with positive source electric pole, power cathode electric pole
Cross electric welding, the mode of perforation to be electrically connected.
2. a kind of bulb with self-forming structured filaments as claimed in claim 1, it is characterised in that the self-forming LED is soft
Property filament include the front or the back side of a metal or nonmetallic substrate, the metal or non-metal base plate or two-sided while arrangement
There are upside-down mounting circuit and flip LED chips, while cloth crystalline substance conducting resinl and laying fluorescence on upside-down mounting circuit and flip LED chips
Powder.
3. a kind of bulb with self-forming structured filaments as claimed in claim 1, it is characterised in that the self-forming LED is soft
Property filament including arbitrary shape arc self-forming structure, the acute angle of arbitrary shape, obtuse angle shape self-forming structure, it is and above-mentioned
The self-forming structure that three combines.
4. a kind of bulb with self-forming structured filaments as claimed in claim 1, it is characterised in that the self-forming LED is soft
Property filament be concentric circles or non-concentric helical structure LED flexibility filaments, the LED coiled filaments of the concentric circles helical structure
Diameter between 10-50mm, the distance of each spiral in the LED of the concentric circles or non-concentric helical structure flexibility filament
Between 3-25mm.
5. a kind of bulb with self-forming structured filaments as claimed in claim 1, it is characterised in that the self-forming LED is soft
Property filament be V-type or W types or Wave-shaped structural LED flexibility filaments.
6. a kind of bulb with self-forming structured filaments as described in claim 4 or 5, it is characterised in that described more
The LED flexibility filaments of root concentric circles or non-concentric helical structure LED flexibility filaments or V-type or W types or Wave-shaped structural are with glutinous
Patch or the structure of natural extension are attached at bulb housing inwall.
7. a kind of bulb with self-forming structured filaments as claimed in claim 1, it is characterised in that the self-forming LED is soft
Property filament front or the back side or two-sided by single fluorescent material, special fluorescent material, realize the self-forming LED flexible lights of multiple color
Silk, such as green self-forming LED flexibility filaments, red self-forming LED flexibility filaments.
8. a kind of bulb with self-forming structured filaments, it is characterised in that including a self-powered self-forming LED flexibility filaments
And it is one transparent or local transparent, made by glass, arbitrary shape, inner inflatable or non-aerating bulb housing, the lamp
Cell-shell bottom is provided with positive source electric pole and power cathode electric pole, and the left and right end of the flexible filaments of the self-forming LED is respectively equipped with band
The positive pole and negative pole of through hole, the positive pole, negative pole respectively with positive source electric pole, power cathode electric pole by electric welding, perforation
Mode is electrically connected.
9. a kind of bulb with self-forming structured filaments as claimed in claim 8, it is characterised in that it is described it is self-powered from
Shaping LED flexibility filaments include the front or the back side or two-sided of a metal or non-metal base plate, the metal or non-metal base plate
Simultaneously upside-down mounting circuit, power drives part and flip LED chips are disposed with, while in upside-down mounting circuit, power drives part and falling
Cloth crystalline substance and laying fluorescent material in dress LED chip.
10. a kind of mould for making self-forming LED flexibility filaments, including a metal or plastic base, it is characterised in that the gold
The one or both sides of category or plastic base are provided with arbitrary shape closing or nonocclusive groove, and the width and length of the groove
With the width and equal length of LED flexibility filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012300.7A CN106641778A (en) | 2016-11-17 | 2016-11-17 | Bulb provided with lamp filaments of self-forming structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012300.7A CN106641778A (en) | 2016-11-17 | 2016-11-17 | Bulb provided with lamp filaments of self-forming structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106641778A true CN106641778A (en) | 2017-05-10 |
Family
ID=58807676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611012300.7A Pending CN106641778A (en) | 2016-11-17 | 2016-11-17 | Bulb provided with lamp filaments of self-forming structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN106641778A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704856A (en) * | 2016-11-21 | 2017-05-24 | 浙江亿米光电科技有限公司 | Lamp bulb with V-shaped LED flexible lamp filament and process for manufacturing V-shaped lamp filament |
| CN107388066A (en) * | 2017-08-23 | 2017-11-24 | 福建鸿博光电科技有限公司 | A kind of multi color temperature flexible LED lamp silk and light fixture |
| CN107514553A (en) * | 2017-07-31 | 2017-12-26 | 浙江亿米光电科技有限公司 | A kind of bulb with self-forming LED light source |
| CN108591850A (en) * | 2018-04-12 | 2018-09-28 | 浙江亿米光电科技有限公司 | A kind of light bulb and flexible LED filament preparation method with flexible LED filament |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240703A (en) * | 2015-10-28 | 2016-01-13 | 汤雄 | Manufacturing technology for bent LED filament and bulb with bent LED filament |
| CN106015973A (en) * | 2016-07-19 | 2016-10-12 | 上海顿格电子贸易有限公司 | LED lamp filament |
-
2016
- 2016-11-17 CN CN201611012300.7A patent/CN106641778A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240703A (en) * | 2015-10-28 | 2016-01-13 | 汤雄 | Manufacturing technology for bent LED filament and bulb with bent LED filament |
| CN106015973A (en) * | 2016-07-19 | 2016-10-12 | 上海顿格电子贸易有限公司 | LED lamp filament |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704856A (en) * | 2016-11-21 | 2017-05-24 | 浙江亿米光电科技有限公司 | Lamp bulb with V-shaped LED flexible lamp filament and process for manufacturing V-shaped lamp filament |
| CN107514553A (en) * | 2017-07-31 | 2017-12-26 | 浙江亿米光电科技有限公司 | A kind of bulb with self-forming LED light source |
| WO2019023821A1 (en) * | 2017-07-31 | 2019-02-07 | 邹军 | Bulb having self-formed led light source |
| CN107388066A (en) * | 2017-08-23 | 2017-11-24 | 福建鸿博光电科技有限公司 | A kind of multi color temperature flexible LED lamp silk and light fixture |
| CN108591850A (en) * | 2018-04-12 | 2018-09-28 | 浙江亿米光电科技有限公司 | A kind of light bulb and flexible LED filament preparation method with flexible LED filament |
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