CN111578167A - LED light bar and manufacturing method thereof, LED light bar assembly and lamp - Google Patents

LED light bar and manufacturing method thereof, LED light bar assembly and lamp Download PDF

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Publication number
CN111578167A
CN111578167A CN202010457381.1A CN202010457381A CN111578167A CN 111578167 A CN111578167 A CN 111578167A CN 202010457381 A CN202010457381 A CN 202010457381A CN 111578167 A CN111578167 A CN 111578167A
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China
Prior art keywords
led
light bar
color
substrate
filaments
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Pending
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CN202010457381.1A
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Chinese (zh)
Inventor
杨涛
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Hangzhou Sky Lighting Co ltd
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Hangzhou Sky Lighting Co ltd
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Priority to CN202010457381.1A priority Critical patent/CN111578167A/en
Publication of CN111578167A publication Critical patent/CN111578167A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • F21K9/90—Methods of manufacture
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • 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
    • F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
    • 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
    • F21V23/06—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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
    • 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
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The application provides an LED light bar, a lamp, an LED light bar assembly and a manufacturing method of the LED light bar. This LED lamp strip includes: a substrate; and a plurality of monochromatic LED filaments, be fixed in on the base plate, every monochromatic LED filament all includes a plurality of LED chips for send monochromatic light, every the surface of monochromatic LED filament all coats and has fluorescent glue, wherein, a plurality of monochromatic LED filaments are in arrange side by side on the base plate, all have the partition area between every two adjacent monochromatic LED filaments, so that the monochromatic LED filament of partition area both sides separates each other, and does not contact each other between the fluorescent glue of the surface of monochromatic LED filament.

Description

LED light bar and manufacturing method thereof, LED light bar assembly and lamp
Technical Field
The application relates to the technical field of lighting, in particular to an LED lamp strip, a lamp, an LED lamp strip assembly and a manufacturing method of the LED lamp strip.
Background
An LED (Light Emitting Diode) is a solid-state semiconductor device capable of converting electric energy into visible Light, and directly converts electricity into Light. In recent years, LEDs have been increasingly used in the field of illumination because of their advantages of energy saving, long service life, and the like.
To achieve rich color effects, different color LED chips can be integrated together to emit combinations of different color light within one fixture. In the prior art, a plurality of single-color LED chips may be strung in a row, and fluorescent glue of corresponding color is coated on the outer surface thereof to make a single-color LED filament. The LED lamp filaments with various colors are arranged together side by side, and the colorful luminous effect can be realized.
However, due to the limitation of the light-emitting angle of each LED filament, the LED filaments interfere with each other, so that the two light colors are refracted, doped and mixed with each other. Moreover, the color of a certain LED filament may not be prominent at a position corresponding to the filament, so that the soft change of pure light color cannot be effectively realized, and the color temperature fluctuation of the lamp is large, the color tolerance and the light color consistency are unstable.
Disclosure of Invention
In order to solve the above problems in the prior art, the present application provides an LED light bar, a lamp, an LED light bar assembly, and a method for manufacturing an LED light bar.
According to an aspect of the present application, there is provided an LED light bar comprising:
a substrate; and
a plurality of single-color LED filaments fixed on the substrate, each single-color LED filament comprises a plurality of LED chips for emitting single-color light, the outer surface of each single-color LED filament is coated with fluorescent glue,
the plurality of single-color LED filaments are arranged on the substrate side by side, and a separation region is arranged between every two adjacent single-color LED filaments, so that the single-color LED filaments on two sides of the separation region are separated from each other, and fluorescent glue on the outer surfaces of the single-color LED filaments is not in contact with each other.
According to one embodiment, the width of the separation zone is greater than or equal to 0.2 mm.
According to one embodiment, the LED light bar further comprises:
and the separation barrier is positioned in the separation region and has a preset height, and the preset height is adjacent to or equal to the height of the single-color LED filament on the substrate.
According to one embodiment, the separation barrier is made of a transparent material.
According to one embodiment, the separation barrier is made of an opaque material.
According to one embodiment, a common positive electrode is arranged on one side of the substrate and electrically connected with one end of each single-color LED filament, and a plurality of negative electrodes which are independent of each other are arranged on the other side of the substrate and electrically connected with the other ends of the single-color LED filaments respectively; or
And a common cathode is arranged on one side of the substrate and electrically connected with one end of each single-color LED filament, a plurality of independent anodes are arranged on the other side of the substrate and respectively electrically connected with the other ends of the single-color LED filaments.
According to one embodiment, the plurality of single color LED filaments have different colors.
According to one embodiment, the plurality of single color LED filaments emit at least two of red light, green light, blue light, cold light, and warm light, respectively.
According to another aspect of the present application, there is provided a luminaire comprising:
a lamp holder, wherein the top end of the lamp holder is provided with a positive electrode and a negative electrode; and
the LED lamp strip is characterized in that the substrate is a flexible transparent substrate, two ends of the lamp strip are respectively electrically connected with the anode and the cathode of the lamp holder and are wound upwards in a spiral manner, and the front surface of the substrate faces outwards.
According to another aspect of the present application, there is provided an LED light bar assembly, comprising at least two LED light bars as described above, wherein the at least two LED light bars respectively comprise LED filaments with different colors, and respectively comprise the same or different numbers of LED filaments.
According to another aspect of the present application, there is provided an LED light bar assembly comprising:
at least one LED light bar as described above; and
at least one single color LED filament, the color of the at least one single color LED filament being different from the color of the LED filaments in the LED light bar.
According to another aspect of the present application, there is provided a method for manufacturing the LED light bar, including:
fixing a plurality of LED chips on a substrate, and enabling the LED chips with the same color to be positioned in the same row, wherein the LED chips with different colors are arranged at intervals;
and coating fluorescent glue on the substrate to cover the LED chips in each row, and enabling a separation area to be arranged between the fluorescent glue covered on the LED chips in two adjacent rows.
According to one embodiment, the method further comprises:
a separation barrier is disposed within the separation zone.
According to one embodiment, the separation barrier is made of a transparent material.
According to one embodiment, the separation barrier is made of an opaque material.
Therefore, due to the existence of the separation region, the fluorescent glue between the adjacent LED filaments cannot be contacted with each other, and therefore light rays emitted by the adjacent LED filaments cannot be interfered and mixed with each other. Particularly, when the LED filaments have different colors (i.e., emit light of different colors), the color and color temperature of adjacent LED filaments do not interfere with each other, so that the color of the filament can be highlighted at a position corresponding to a certain LED filament to realize soft change of pure light color and realize a full-color filament light source emitting light without color cast.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 and 2 show schematic diagrams of an LED light bar according to an embodiment of the present application.
Fig. 3 shows a partially enlarged schematic view of two adjacent single-color LED filaments and the separation region therebetween according to an embodiment of the present application.
Fig. 4 shows a partially enlarged schematic view of two adjacent single color LED filaments and the separation region therebetween according to one embodiment of the present application.
Fig. 5 and 6 show another embodiment of the LED light bar of fig. 1 and 2, respectively.
Fig. 7 shows a schematic circuit diagram of the LED light bar of fig. 5 and 6.
Fig. 8 shows a schematic diagram of flip-chip LED chips in an LED light bar.
FIG. 9 illustrates a perspective view of a luminaire according to one embodiment of the present application.
Fig. 10 shows a flow chart of a method of manufacturing an LED light bar according to an embodiment of the present application.
Fig. 11 shows a flow chart of a method for manufacturing an LED light bar according to another embodiment of the present application.
Detailed Description
For a better understanding of the technical solutions and advantages of the present application, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. The specific embodiments described herein are merely illustrative of the present application and are not intended to be limiting of the present application. In addition, the technical features mentioned in the embodiments of the present application described below may be combined and used unless they conflict with each other, thereby constituting other embodiments within the scope of the present application.
The following description provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Fig. 1 and 2 show schematic diagrams of an LED light bar according to an embodiment of the present application. As shown in fig. 1 and 2, the LED light bar 100 can include a substrate 110 and a plurality of single color LED filaments 120. The single-color LED filaments 120 are arranged side by side and fixed to the substrate 110. The substrate 110 may be a hard board made of metal, ceramic, or the like, or may be a Flexible Printed Circuit (FPC) board made of Polyimide resin (PI), Bismaleimide Triazine resin (BT), or the like.
Referring to fig. 2, each LED filament 120 may include a plurality of LED chips 121 for emitting monochromatic light. The LED chip 121 may be fixed on a metal wire of the substrate 110 by a conductive paste or solder to form a circuit connection, or may be fixed on the substrate 110 by an insulating paste and then formed by a metal wire. The outer surface of each LED filament 120 is coated with fluorescent glue to form the LED filament 120 shown in fig. 1, so that each single-color LED filament can emit uniform single-color light. It is understood that, in order to emit light of different colors, the colors of the LED chip and the fluorescent paste may be appropriately selected to emit light of various colors, for example, RGBCW, etc., which are common in the field of illumination.
Between each adjacent two single-color LED filaments 120, there is a separation region 130 such that the single-color LED filaments 120 on both sides of the separation region 130 are spaced apart from each other and the fluorescent glue coated on the outer surfaces of the single-color LED filaments 120 is not in contact with each other.
Therefore, due to the existence of the separation region, the fluorescent glue between the adjacent LED filaments cannot be contacted with each other, and therefore light rays emitted by the adjacent LED filaments cannot be interfered and mixed with each other. Particularly, when the LED filaments have different colors (i.e., emit light of different colors), the color and color temperature of adjacent LED filaments do not interfere with each other, so that the color of the filament can be highlighted at a position corresponding to a certain LED filament to realize soft change of pure light color and realize a full-color filament light source emitting light without color cast.
Fig. 3 shows a partially enlarged schematic view of two adjacent single-color LED filaments and the separation region therebetween according to an embodiment of the present application. As shown in fig. 3, there is a separation region 130 between two adjacent single color LED filaments 120. According to one embodiment, the width W of the separation zone 130 is greater than or equal to 0.2 mm. Therefore, the width of the separation region is enough to prevent the fluorescent glue coated on the outer surfaces of the LED filaments on the two sides of the separation region from contacting each other, and the separation region can also be spaced at a certain distance, so that the interference and the mixing of light rays between the adjacent LED filaments are avoided.
Fig. 4 shows a partially enlarged schematic view of two adjacent single color LED filaments and the separation region therebetween according to one embodiment of the present application. As shown in fig. 4, a separation barrier 140 may be disposed within the separation region 130 to further physically separate the adjacent two LED filaments 120. The height of the separation barrier 140 on the substrate 110 is equivalent to, i.e., approximately or equal to, the height of the LED filament 120 on the substrate 110, so that light interference between two adjacent LED filaments can be effectively prevented.
According to one embodiment, the separation barrier 140 may be made of a transparent material, for example, a material such as transparent glue, glass, or the like may be formed on the substrate 110 by a physical or chemical method. The transparent separation barrier 140 may reduce its blocking and absorption of the outgoing light, thereby improving the light emitting efficiency and light emitting angle of the entire device.
According to another embodiment, the separation barrier 140 may be made of an opaque material, for example, a material such as ink, metal, etc. may be printed on the substrate 110 by a physical or chemical method. The opaque separation barrier 140 can almost completely block light interference between two adjacent LED filaments, so that monochromaticity of the LED light bar is better, light color is purer, and spectrum is closer to pure spectrum.
Fig. 5 and 6 show another embodiment of the LED light bar shown in fig. 1 and 2, respectively, and fig. 5 and 6 are different from fig. 1 and 2 in that specific configurations of the positive and negative electrodes of the LED light bar are also shown in fig. 5 and 6. For the sake of brevity, only differences of the embodiment shown in fig. 5 and 6 from fig. 1 and 2 will be described below, and detailed descriptions of the same parts will be omitted.
In fig. 5 and 6, the left end of the light bar 100 is a positive electrode, and the right end is a negative electrode. As shown in fig. 5 and 6, a single common positive electrode 111 is disposed on one side of the substrate 110, and a plurality of negative electrodes 112 independent of each other are disposed on the other side, the common positive electrode 111 is electrically connected to one end of each of the single-color LED filaments 120, and the plurality of negative electrodes 112 are electrically connected to the other ends of the plurality of single-color LED filaments 120, respectively. Therefore, the problem that insufficient soldering and/or desoldering are easy to generate due to the fact that each LED filament is provided with the independent anode and cathode, and the production efficiency is improved due to the fact that the number of the welding points is reduced. According to the embodiments shown in fig. 5 and 6, the plurality of single-color LED filaments have a single common positive electrode, which on one hand reduces the number of welding spots, thereby reducing the risk of cold joint and desoldering and improving the production efficiency, and on the other hand, on the negative electrode side, each LED filament still has an independent negative electrode, thereby still being capable of controlling the light of different colors emitted by each LED filament individually by controlling the electrical signal of each LED filament, so as to realize the control of color, light intensity and the distribution thereof.
It will be appreciated that light bar 100 can also be configured to have a single common negative electrode and multiple positive electrodes independent of each other, and similar effects can be achieved as in the embodiments of fig. 5 and 6.
Fig. 7 shows a schematic circuit diagram of the LED light bar of fig. 5 and 6. As shown in fig. 7, the positive electrodes of the LED light bars 100 are in the form of a common positive electrode, and the negative electrodes are in the form of a plurality of negative electrodes independent from each other, and each LED filament 120 of the LED light bars 100 forms an independently conducting circuit.
In the above embodiments shown in fig. 2 and 6, the manner of positively mounting the LED chip is adopted, but the present application is not limited thereto.
Fig. 8 shows a schematic diagram of flip-chip LED chips in an LED light bar. As shown in fig. 8, each LED chip in the LED light bar can be flipped according to actual needs, and similar effects when the present application is applied to a normally mounted LED chip can also be achieved.
According to one embodiment of the present application, the plurality of single-color LED filaments 120 in the LED light bar 100 can have different colors, thereby achieving multi-color toning. Further, the plurality of single color LED filaments 120 of LED light bar 100 can emit at least two of red light, green light, blue light, cold light, and warm light (i.e., RGBCW), respectively. According to the embodiment of the application, the fluorescent glue and the LED chip can emit visible light with different color temperatures or different colors under self excitation, the main light-emitting wavelength range of blue light is 400-plus 490nm, the main light-emitting wavelength range of red light is 610-plus 660nm, the main light-emitting wavelength range of green light is 510-plus 540nm, and the wavelength range of mixed visible light is 400-plus 660 nm; meanwhile, the range of Ra0-98 can be adjusted, and white light with CCT1000K-8000K can be realized.
FIG. 9 illustrates a perspective view of a luminaire according to one embodiment of the present application. In order to clearly show the internal structure of the luminaire, the housing of the luminaire etc. is therefore omitted in fig. 9. As shown in fig. 9, the light fixture 200 may include a socket 210 and the LED light bar 100 as described above. The lamp holder 210 is provided with a positive electrode 211 and a negative electrode 212 at the top end, and two ends of the LED light bar 100 are electrically connected with the positive electrode 211 and the negative electrode 212 of the lamp holder 210 respectively to realize circuit conduction. In the present embodiment, the substrate 110 of the LED light bar 100 is a flexible transparent substrate, so that both ends of the LED light bar 100 can be wound up in a spiral form, and the front surface of the substrate 110 faces outward. From this, the advantage of the LED lamp strip of this application can be fully utilized to through spiral winding, realize that omnidirectional adjusts luminance mixing of colors is thrown light on.
According to another embodiment of the present application, an LED light bar assembly is provided, which may include at least two LED light bars as described above, wherein the at least two LED light bars respectively include LED filaments with different colors, and respectively include the same or different numbers of LED filaments. For example, the LED light bar assembly may include two LED light bars, one of which contains three LED filaments for red, green and blue, and the other of which contains two LED filaments for cold and warm light, i.e., a "3 + 2" combination. According to different requirements, the design can also be carried out into a combination of 2+2, 2+2+3 and the like. Therefore, the color and light intensity can be adjusted more flexibly according to different light-emitting requirements.
According to another embodiment of the present application, there is provided an LED light bar assembly that may include at least one LED light bar as described above and at least one single color LED filament having a color different from the color of the filaments in the LED light bar. For example, the LED light bar assembly may include one red LED filament and one LED light bar that contains two LED filaments, i.e., a "1 + 2" combination, of cool and warm light. According to different requirements, the design can also be carried out into a combination of 1+3, a combination of 1+2+2 and the like.
Fig. 10 shows a flow chart of a method of manufacturing an LED light bar according to an embodiment of the present application. As shown in fig. 10, the method 300 may include steps S310 and S320.
In step S310, a plurality of LED chips are fixed on a substrate, and the LED chips having the same color are located in the same row, and the LED chips having different colors are disposed to be spaced apart from each other. According to the arrangement of the LED chips in the step, the LED chips with the same color in the same row can form single-color LED filaments in the subsequent step, and different LED filaments are spaced from each other.
In step S320, a fluorescent glue is coated on the substrate to cover the LED chips in each row, and a separation region is formed between the fluorescent glue covered on the LED chips in two adjacent rows. In this step, fluorescent glue can be coated on the LED chip by any suitable glue dispensing device, and the distance between the fluorescent glue on the surface of each two adjacent LED filaments needs to be precisely controlled to form the separation region, so that the fluorescent glue on the surface of the adjacent filaments does not contact with each other.
Therefore, the LED light bar according to the above embodiment is formed, and the separation region is disposed between the LED filaments, so that the fluorescent glue between the adjacent LED filaments does not contact each other, and therefore, the light rays emitted by the adjacent LED filaments do not interfere with each other and mix with each other.
Fig. 11 shows a flow chart of a method for manufacturing an LED light bar according to another embodiment of the present application. As shown in fig. 11, the method 300 may further include a step S330 in addition to the steps S310 and S320. For the sake of brevity, only the differences of fig. 11 from fig. 10 will be described below, and detailed descriptions of the same parts will be omitted.
In step S330, a separation barrier is disposed within the separation region. Thereby, adjacent two LED filaments may be further physically separated. The height of the separation barrier on the substrate can be equivalent to, i.e. approximate or equal to, the height of the LED filament on the substrate, so that light interference between two adjacent LED filaments can be effectively prevented. The separation barrier may be made of a transparent material such as transparent glue, glass, etc., or may be made of an opaque material such as ink, metal, etc.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. The technical features of the embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.

Claims (10)

1. An LED light bar comprising:
a substrate; and
a plurality of single-color LED filaments fixed on the substrate, each single-color LED filament comprises a plurality of LED chips for emitting single-color light, the outer surface of each single-color LED filament is coated with fluorescent glue,
the plurality of single-color LED filaments are arranged on the substrate side by side, and a separation region is arranged between every two adjacent single-color LED filaments, so that the single-color LED filaments on two sides of the separation region are separated from each other, and fluorescent glue on the outer surfaces of the single-color LED filaments is not in contact with each other.
2. The LED light bar of claim 1, wherein the width of the separation region is greater than or equal to 0.2 mm.
3. The LED light bar of claim 1, further comprising:
and the separation barrier is positioned in the separation region and has a preset height, and the preset height is adjacent to or equal to the height of the single-color LED filament on the substrate.
4. The LED light bar of claim 3, wherein the separation barrier is made of a transparent material.
5. The LED light bar of claim 3, wherein the separation barrier is made of an opaque material.
6. The LED light bar of claim 1, wherein
A common positive electrode is arranged on one side of the substrate and electrically connected with one end of each single-color LED filament, a plurality of mutually independent negative electrodes are arranged on the other side of the substrate and electrically connected with the other ends of the single-color LED filaments respectively; or
And a common cathode is arranged on one side of the substrate and electrically connected with one end of each single-color LED filament, a plurality of independent anodes are arranged on the other side of the substrate and respectively electrically connected with the other ends of the single-color LED filaments.
7. The LED light bar of claim 1, wherein the plurality of single color LED filaments are of different colors.
8. The LED light bar of claim 7, wherein the plurality of single color LED filaments emit at least two of red light, green light, blue light, cold light, and warm light, respectively.
9. A light fixture, comprising:
a lamp holder, wherein the top end of the lamp holder is provided with a positive electrode and a negative electrode; and
the LED light bar of any one of claims 1-8, wherein the substrate is a flexible transparent substrate, both ends of the light bar are electrically connected to the positive and negative electrodes of the socket, respectively, and are wound up in a spiral fashion with the front side of the substrate facing outward.
10. An LED light bar assembly comprising at least two LED light bars as claimed in any of claims 1-8, wherein the at least two LED light bars each comprise LED filaments of different colors and each comprise the same or different number of LED filaments.
CN202010457381.1A 2020-05-26 2020-05-26 LED light bar and manufacturing method thereof, LED light bar assembly and lamp Pending CN111578167A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112423432A (en) * 2020-10-13 2021-02-26 深圳市智岩科技有限公司 Control method and device for lighting, storage medium and lighting assembly
WO2022268500A1 (en) * 2021-06-25 2022-12-29 Signify Holding B.V. Led filament arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112423432A (en) * 2020-10-13 2021-02-26 深圳市智岩科技有限公司 Control method and device for lighting, storage medium and lighting assembly
CN112423432B (en) * 2020-10-13 2024-02-27 深圳市智岩科技有限公司 Control method and device for lamplight illumination, storage medium and illumination assembly
WO2022268500A1 (en) * 2021-06-25 2022-12-29 Signify Holding B.V. Led filament arrangement

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