WO2020019945A1 - 一种新型led灯丝 - Google Patents

一种新型led灯丝 Download PDF

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Publication number
WO2020019945A1
WO2020019945A1 PCT/CN2019/094167 CN2019094167W WO2020019945A1 WO 2020019945 A1 WO2020019945 A1 WO 2020019945A1 CN 2019094167 W CN2019094167 W CN 2019094167W WO 2020019945 A1 WO2020019945 A1 WO 2020019945A1
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WO
WIPO (PCT)
Prior art keywords
substrate
filament
substrates
light
light emitting
Prior art date
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PCT/CN2019/094167
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English (en)
French (fr)
Inventor
葛铁汉
Original Assignee
葛铁汉
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 葛铁汉 filed Critical 葛铁汉
Priority to US17/259,059 priority Critical patent/US11346508B2/en
Priority to EP19839860.4A priority patent/EP3805628A4/en
Publication of WO2020019945A1 publication Critical patent/WO2020019945A1/zh

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    • 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
    • F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
    • 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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/80—Light sources with three-dimensionally disposed light-generating elements on articulated supports or substrates
    • 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
    • F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • 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]

Definitions

  • the invention relates to an LED lamp, in particular to a novel LED filament.
  • LED lamps have a series of advantages such as long life, high luminous efficiency, no ultraviolet radiation, and good energy saving effects, which have become the development trend of future light sources.
  • the "LED fluorescent lamp” disclosed in Chinese patent CN102022651A includes a lamp cover, an LED light source component, an LED driving component, two end covers, and a heat dissipation casing.
  • the lamp cover is connected to the heat dissipation casing.
  • the two end covers are respectively fastened to the two ends of the lamp cover and the heat dissipating shell.
  • the cross sections of the lamp cover and the heat dissipating shell are arc-shaped, and the lamp cover and the heat dissipating shell form a cavity.
  • the LED light source component And the LED driving assembly is located in the cavity.
  • this type of LED fluorescent lamp can only be set to a flat surface. Therefore, although its shape has the shape of a long straight tube of fluorescent lamps, its light emitting area is only 180 degrees, that is, it starts to emit light from a plane. And it can't do 360-degree all-round light. Therefore, in today's LED lamps, the heat dissipation area and the light emitting area are contradictory. Therefore, none of the existing LED fluorescent lamps can achieve 360-degree all-round light emission under the condition of meeting the heat dissipation requirements.
  • the general LED light bulb has a relatively single structure and function, and can only realize the lighting function, and cannot have other functions. Therefore, it cannot give users other feelings and experiences.
  • the technical problem to be solved by the present invention is to provide an LED filament that not only has better heat dissipation performance, is convenient to manufacture, but also can satisfy all-round light emission.
  • a new type of LED filament including at least one filament substrate, characterized in that the at least one filament substrate includes at least two segments of substrates connected in sequence, and the substrate has two Opposite light-emitting surfaces, and light-emitting surfaces of adjacent substrates are twisted with each other with the extending direction of the filament substrate as an axis, and LED light-emitting elements are disposed on the light-emitting surfaces.
  • the light emitting surfaces of the at least two substrates are sequentially twisted in the same direction with the length direction of the filament substrate as an axis, or are twisted back and forth.
  • the light emitting surfaces of adjacent substrates are twisted at an angle of not more than 90 degrees.
  • the mutually twisted angles between the light emitting surfaces of adjacent substrates are the same or different.
  • two light-emitting surfaces of the substrate are provided with LED light-emitting elements on one surface or light-emitting elements on both surfaces.
  • the at least one filament substrate includes at least two, one end of the at least two filament substrates is connected to an external power source through a lead, and the other end of the at least two filament substrates is connected to each other through a connecting member.
  • the at least two filament substrates are connected to the connector structure, and at least two filament substrates are disconnected from the circuit; or the at least two filament substrates are connected to the connector structure, and are electrically connected at the same time.
  • the at least two filament substrates are connected.
  • the filament substrate is a strip-shaped substrate, and the filament substrate has two opposite sides, the filament substrate is divided into a plurality of sections, and the filament substrate The extending direction is that the axis is twisted to form the multi-stage substrate, and two opposite sides of the filament substrate form a light-emitting surface of the substrate.
  • the substrate is a conductive substrate, an insulating substrate, a PCB board, an SMD package element, or a COB package element.
  • the present invention has the advantages that the LED filament structure is not only convenient to process, high yield, simple structure, convenient integration, and easy to dissipate heat.
  • the filament substrate includes a plurality of substrates, and the plurality of substrates are twisted with each other. A certain angle, therefore, forming a plurality of light emitting surfaces facing different directions, so that the LED filament can emit light at multiple angles to form a more uniform and comprehensive light emitting effect.
  • the LED light-emitting elements on multiple filaments can also be set in a variety of electrical connection modes, and further, LED light-emitting elements of different colors can be provided to achieve control of various light-emitting effects.
  • FIG. 1 is a light bulb having an LED filament according to a first embodiment of the present invention.
  • FIG. 2 is an LED filament according to the first embodiment of the present invention.
  • FIG. 3 is an LED filament according to a second embodiment of the present invention.
  • FIG. 4 is an LED filament according to a third embodiment of the present invention.
  • FIG. 5 is an LED filament according to a fourth embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a light bulb having an LED filament according to a fifth embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a light bulb having an LED filament according to a sixth embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a light bulb having an LED filament according to a seventh embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the filament substrate.
  • FIG. 10 is a schematic diagram of another filament substrate.
  • the LED lamp according to the first embodiment of the present invention includes a lamp cap 1 and a driver located in the lamp cap 1.
  • the lamp cap 1 is fixedly connected with a light transmitting cover 3, and the light transmitting cover 3 Made of light-transmitting material or light-transmitting structure.
  • the transparent cover 3 is a spherical bulb.
  • An LED filament is fixed on the lamp cap 1, and the LED filament is located inside the transparent cover 3.
  • the lamp holder 1 is also connected with a connection post 4, which is also located in the light-transmitting cover 3.
  • the LED filament is provided on the connection post 4, and the LED filament is connected to the connection post 4 through a lead and is connected to the lamp holder 1.
  • Driver for power supply control of the filament is provided on the lamp cap 1, and the LED filament is located inside the transparent cover 3.
  • the LED filament includes at least one strip-shaped filament substrate 5. At least one end of the filament substrate 5 is electrically connected to a driver in the lamp cap 1 through a lead wire 7, that is, is connected to an external power source.
  • the filament substrate 5 is a strip-shaped substrate.
  • the filament substrate 5 has two opposite surfaces.
  • the at least one filament substrate 5 includes at least two substrates 51 that are sequentially connected along the extending direction of the filament substrates.
  • the extending direction of the filament substrate is axial, twisted at a certain angle to each other, and the two opposite surfaces are twisted with each other as the substrate 51 is twisted to form two opposite light emitting surfaces 52 of the substrate 51.
  • the two opposite light-emitting surfaces 52 of the substrate 51 are surfaces facing two different directions, and the LED light-emitting elements 6 may be disposed on the light-emitting surface 52 so that light is emitted in different directions.
  • the filament substrate 5 includes a plurality of segments of the substrate 51 connected to each other, and the plurality of segments of the substrate 51 are twisted in a direction in one direction in the axial direction of the filament substrate 5.
  • the multi-segment substrate 51 is sequentially twisted, the two opposite sides of the filament substrate 5 are also twisted with each other, that is, the light-emitting surface 52 is twisted together with the substrate.
  • the light-emitting surface 52 of the multi-segment substrate 51 faces different angles, making the multi-segment
  • the light emitting surfaces 52 of the substrates 51 are twisted with each other with the longitudinal direction of the filament substrate 5 as an axial direction, so that the filament substrate can emit light at all angles, so that the light emission is more comprehensive.
  • the multi-segment substrate 51 is based on the extension direction of the filament substrate 5 as an axis, and the adjacent substrates 51 are twisted at a certain angle. Twist in turn, for example, both clockwise or counterclockwise around the axis; or reciprocating, that is, the direction of the twist is indefinite.
  • the twisting angles between the multiple substrates 51 may be the same or different, so as to form the light emitting surfaces 52 facing different positions.
  • the LED light emitting element 6 may be provided on two opposite light emitting surfaces of the substrate 51 simultaneously, or the LED light emitting element 6 may be provided on only one surface.
  • the relative twist angle between the adjacent substrates does not exceed 90 degrees, and preferably does not exceed 45 degrees.
  • the light-emitting surface 52 of each segment is facing the same direction, that is, the filament substrate 5 itself has two opposite surfaces. Therefore, when the multi-segment substrate 51 faces each other, After the twisting, the opposite surface is twisted to form the light emitting surface 52 of each stage of the substrate 1 with the plurality of substrates 51, and further the shape of the light emitting surface 52 around the extension direction of the filament substrate 5 is axially twisted.
  • the purpose of twisting the substrates 51 is to twist the light emitting surface 52.
  • the twisting angle of the light emitting surface 52 between the adjacent substrates 51 may be the same or different, and may be sequentially twisted in one direction along the extending direction of the filament substrate 5 or twisted back and forth.
  • the multi-segment substrate 51 of the filament substrate 5 may always be kept in a consistent and untwisted state, but light emitting surfaces 52 that are twisted to each other may be provided thereon.
  • the purpose of twisting the multiple substrates 51 is to twist the light emitting surfaces 52 between adjacent substrates 51. If the twisted light emitting surface 52 can be directly provided without twisting the filament substrate 51, the object of the present invention can also be achieved.
  • the light emitting surfaces are twisted to each other with the extending direction of the filament substrate 5 as an axial direction.
  • the light emitting surfaces 52 of each substrate 51 are staggered from each other on a cross section perpendicular to the extending direction of the filament substrate 5 to form a filament.
  • the extending direction of the substrate 5 is the central axis, and it faces a plurality of light emitting surfaces in different directions, thereby realizing full-angle light emission at multiple angles.
  • the filament substrate 5 is twisted according to the arrangement of the multi-segment substrate 51, and the multi-segment substrate 51 is twisted.
  • the entire filament substrate 5 may be disposed on the connection post 4. Since the twisting angle between adjacent substrates does not exceed 60 degrees, that is, the twisting angle between the light emitting surfaces 52 between adjacent substrates does not exceed 60 degrees, the twisting of the filament substrate will not cause the connection line to break or The filament substrate is damaged and can emit light at multiple angles.
  • the filament substrate may be two filament substrates arranged vertically as shown in FIGS. 1 and 2.
  • the tops of the two filament substrates are connected by a connecting member 8, the filament substrate 5 and the connecting member 8 are U-shaped, and the filament substrate 5 The bottom ends are connected to the connecting posts 4 respectively, and the filament substrate 5 may also have other shapes.
  • the connecting member 8 may connect two filament substrates on a circuit and at least two filament substrates at the same time in a structure; it may also connect only the filament substrates in a structure, so that a circuit is formed between the two filament substrates 5 on the circuit.
  • the material of the filament substrate 5 is not limited to metal, plexiglass, PVC, plastic, sapphire, ceramic, and silicone, and may be one of them, or multiple materials among the above materials may be made by splicing and / or nesting.
  • FIG. 9 it is a schematic diagram of one of the filament substrates 5.
  • the filament substrate 5 is a metal strip substrate, and the filament substrate 5 itself is led out as a pole lead. There are multiple areas on the filament substrate 5 for setting.
  • the LED light-emitting elements are formed into a plurality of substrates 51 which are sequentially connected along the extending direction of the filament substrate 5. Each of the plurality of substrates 51 includes two light-emitting surfaces 52 opposite to each other.
  • the light-emitting surface 52 is provided with LED light-emitting elements, and the light-emitting surface of the substrate 51 52 uses the extending direction of the filament substrate 5 as an axial direction to twist each other, and no LED light emitting element is provided at the twisted position.
  • each circuit board 51 or a plurality of circuit boards 51 are provided with a disconnection connector 53 so that circuit breaks and structural connections are formed between the plurality of circuit boards 51.
  • the substrate 51 is also a metal substrate.
  • the filament substrate 5 may be a metal substrate, that is, a conductive substrate, or a PCB board, or may be other glass or an insulating substrate, or it may be as shown in FIG. 10.
  • the filament substrate 5 is a strip-shaped connection substrate.
  • a plurality of SMD packaging components are fixedly connected to the strip-shaped connection substrate.
  • the plurality of SMD packaging components is the substrate 51.
  • the SMD packaging components include two opposite light-emitting surfaces. 52, and at least one light emitting surface 52 of the LED light emitting element 6 is packaged. Therefore, the substrate 51 may be in various forms, as long as it has two light-emitting surfaces opposite to each other, and an LED light-emitting element can be provided thereon.
  • the substrate may be a COB package element.
  • the LED light emitting element may be connected in parallel or in series with each other.
  • the LED light emitting element may be an LED chip or an LED lamp bead.
  • the LED chip may be a vertical chip, a horizontal chip, a white light chip, or a flip chip.
  • the LED light-emitting element of the filament substrate 1 can be fixed on the filament substrate 5 with transparent glue or conductive glue, such as silicon gel, modified resin, epoxy resin, silver glue, or copper glue.
  • the chip connection lines on the filament substrate 5 or the lines reserved on the filament substrate 5 are connected in series or in parallel with each other.
  • the outer side of the LED light emitting element 6 may also be coated with a transparent dielectric layer having a protection or light emitting function. As shown in FIG.
  • a part of the LED light emitting element 6 is provided with a transparent dielectric layer, and some of the LED light emitting element 6 is not provided.
  • Transparent medium layer The material of the transparent medium layer is one or a combination of silica gel, epoxy resin glue, and LED light-emitting powder glue.
  • the filament substrate 5 includes a plurality of segments of the substrate 51.
  • the plurality of segments of the substrate 51 may be separately formed and connected to each other, or the filament substrate 5 may be a strip substrate, and the filament substrate 5 may be divided into a plurality of segments.
  • the extension direction of 5 is an axial direction, which is twisted with each other to form a form in which the multi-segment substrate 51 is twisted with each other, so that the light-emitting surfaces 52 of the multi-segment substrate 51 are twisted with each other.
  • no LED light emitting element is provided at the twisted portion.
  • the filament substrate 5 is a strip-shaped substrate and has two opposite light-emitting surfaces.
  • the light-emitting surface may be a partial surface, or one of the surfaces, or the LED light-emitting elements 6 are provided on both surfaces.
  • the filament substrate 5 is twisted in sections around its longitudinal direction as an axis, so that the filament substrate 5 is formed in a multi-stage twisted form, and further, the light-emitting surfaces 52 of the multi-staged substrate 51 are twisted with each other.
  • such a strip-shaped filament substrate 5 is processed into the shape of a plurality of segments of the substrate 51, so that the overall LED light-emitting element 6 can be integrally processed and then formed into a shape of a twisted filament, which is convenient to process, has high efficiency, and emits light. Even.
  • the LED filament in this embodiment includes three strip-shaped filament substrates 5.
  • the filament substrate 5 includes two on the lower side and one on the upper side.
  • the upper filament substrate 5 is annular, and both sides are connected to the tops of the two lower filament substrates 5 respectively, and the bottom ends of the two lower filament substrates 5 are connected to the connecting posts 4.
  • the three filament substrates 5 can be connected by connecting wires or directly connected to each other.
  • Each filament substrate 5 is divided into multiple sections along its extension direction, and each section of the substrate 51 is twisted around the extension direction of the filament substrate 5 as an axis. A certain angle.
  • the filament substrate 5 is not necessarily a straight line, and may be circular, S-shaped, or other regular or irregular shapes, as long as the light emitting surface on the substrate is twisted with the extension direction of the filament substrate as an axis Just fine.
  • the LED filament in this embodiment includes two strip-shaped filament substrates 5.
  • the two filament substrates 5 are arranged in a “herringbone” shape, and the upper ends are connected to each other. The lower end is connected to the connecting post 4.
  • Each of the filament substrates 5 includes a plurality of segments of the substrate 51 twisted about the extension direction of the filament substrate 5.
  • the light emitting surfaces 52 of the plurality of segments of the substrate 51 are twisted around each other around the extension direction of the filament substrate 5.
  • LED light emitting elements 6 are provided thereon.
  • the two filament substrates 5 may be the tops of two separate filament substrates 5 fixedly connected to each other, or may be a single substrate, and two people are formed after shaping. ⁇ shaped filament substrate 5.
  • the LED filament includes four filament substrates 5.
  • the top ends of the four filament substrates 5 are connected to each other through a connecting member 8.
  • the bottom end is connected to the connecting post 4 through a lead 7.
  • the four filament substrates 5 are evenly distributed in the circumferential direction from the top to the bottom, and are spread out downward and outward.
  • each filament substrate 5 includes a plurality of segments of the substrate 51, and the plurality of segments of the substrate 51 are based on the extending direction of the filament substrate 5 as an axis, and adjacent substrates are sequentially rotated in the same direction by a certain angle. It should be noted here that when the LED filament includes a plurality of filament substrates, the plurality of filament substrates 5 may be connected to each other or may not be connected, and each of them may be directly connected to the base 1 through a lead or directly.
  • the light bulb in this embodiment is also a spherical light bulb, that is, the light-transmitting cover 3 is spherical.
  • the bottom of the light-transmitting cover 3 is fixedly connected to the lamp cap 1.
  • the light-transmitting cover A filament substrate 5 is arranged in the shell 3, the filament substrate 5 is vertically arranged on the lamp holder 1, and one end thereof is fixed and electrically connected to the lamp holder 1.
  • the filament substrate 5 includes a plurality of substrates 51, and the substrate 51 is wound around the filament substrate 1.
  • the extension direction is that the shafts twist each other, that is, the shaft is twisted around the vertical direction, and the twist angle does not exceed 60 degrees.
  • the filament substrate 5 has two light emitting surfaces 52 opposite to each other. After a plurality of segments of the substrate 51 are twisted, the light emitting surfaces 52 of each of the substrates 51 are twisted to each other to form a plurality of light emitting surfaces with different orientations. LED light emitting elements 6 are provided on both light emitting surfaces 52 of the multi-stage substrate 51.
  • the lamp in this embodiment is a tubular lamp, the light-transmitting cover 3 is tubular, and an LED filament is provided in the hollow. Both ends of the LED filament are connected.
  • a lamp head 1 to both ends of the light-transmitting cover 3 is provided with a driver in the lamp head 1 for electrical connection with an external power source.
  • the LED filament includes a strip-shaped filament substrate 5.
  • the filament substrate 5 itself has two opposite planes.
  • the filament substrate 5 is divided into a plurality of segments of a substrate 51, and each segment of the substrate 51 is an axis along the extending direction of the filament substrate 5.
  • two opposite planes of the filament substrate 5 can form two opposite light emitting surfaces 52 of the substrate 51, and the light emitting surfaces 52 of each segment of the substrate 51 are twisted in sequence with the extension direction of the filament substrate 5 as an axis. Angle, the angle is less than 60 degrees, and further forms a plurality of segments of the light emitting surface 52 facing different substrates 51, thereby achieving multi-angle LED light emission.
  • the two light emitting surfaces 52 of the substrate 51 may each be provided with an LED light emitting element 6.
  • the light-transmitting cover 3 in this embodiment is a ST64 standard light bulb, and an LED filament is provided therein.
  • One end of the LED filament is fixedly connected to the base 1.
  • the LED filament includes a strip-shaped filament substrate 5.
  • the filament substrate 5 includes a plurality of substrates 51 connected in sequence.
  • the substrate 51 is ring-shaped and has opposite light-emitting surfaces 52.
  • the light-emitting surfaces 52 are all It is a plane, but those skilled in the art can understand that the light emitting surface 52 may also be a curved surface, or may be other surfaces, such as a concave surface or a convex surface, or a semi-concave and semi-convex surface, or an irregular curved surface. It is only necessary that the two light emitting surfaces 52 of the substrate 51 have opposite directions.
  • the ring-shaped substrate 51 is provided with LED light-emitting elements 6 distributed in a ring shape.
  • the shape of the substrate 51 may not be limited to the above-mentioned shape, and the substrate 51 may have a ring shape, a ring shape, a square shape, or other regular or irregular shapes.
  • the shape of each multi-segment substrate 51 can be the same or different, and can be set as needed.
  • the above-mentioned LED filament structure not only has convenient processing, high yield, but also has a simple structure and convenient integration, and various shapes can be arranged between the filament substrates. There is a large gap between the filament substrate and the filament substrate to facilitate heat dissipation.
  • the filament substrate includes a plurality of substrates, and the substrates are twisted at a certain angle with each other. Therefore, a plurality of light emitting surfaces facing different directions are formed, so that the LED filament can emit light at multiple angles to form a more uniform and comprehensive light emitting effect.
  • the LED light-emitting elements on multiple filaments can also be set in a variety of electrical connection modes, such as series, parallel, etc., and then LED light-emitting elements of different colors can be set to achieve control of various light-emitting effects.
  • the LED filament can be used in a variety of light bulb structures, such as a bulb lamp or a tubular lamp. Those skilled in the art can set it according to their needs and have a wide range of applications.

Abstract

一种新型LED灯丝，包括至少一条灯丝基板，其特征在于：所述至少一条灯丝基板包括依次连接的至少两段基板，所述基板具有两个相对的发光面，并且相邻的基板的发光面以灯丝基板的延伸方向为轴相互扭转，所述发光面上设置LED发光元件。该LED灯丝结构，不但便于散热，而且，形成多个朝向不同方向的发光面，使得LED灯丝能够朝多个角度发光进而形成更加均匀全方位的发光效果。而且，多个灯丝上的LED发光元件也可以设置成多种电连接方式，进而可以设置不同颜色的LED发光元件，达到多种发光效果的控制。

Description

一种新型LED灯丝 技术领域
本发明涉及一种LED灯，特别是涉及一种新型LED灯丝。
背景技术
近年来，随着LED技术的不断发展，照明用LED灯具的各种性能有了很大的提高。LED灯具具有寿命长、发光效率高、没有紫外辐射、节能效果好等一系列的优点，成为未来光源的发展趋势。
但是LED光源具有方向性，不像白炽灯等一样可以做到360度发光，因此，当采用LED作为光源来取代传统的白炽灯或其他光源时，其发光效果受到一定的限制。特别是将LED制成传统的灯管形状的日光灯时，如中国专利CN102022651A所公开的“LED日光灯”包括灯罩、LED光源组件、LED驱动组件、两端盖以及散热外壳，灯罩与散热外壳连接，两端盖分别扣合于所述灯罩和所述散热外壳连接后的两端，灯罩和散热外壳的横截面均呈弧形，且灯罩和所述散热外壳形成一腔体，所述LED光源组件和所述LED驱动组件位于所述腔体内。该种LED日光灯，为了而满足LED的散热需求，所以只能将LED设置成一平面，因此，虽然其外形具有日光灯的长直筒形状，但是其发光面积仅仅只有180度，即从一平面开始发光，并不能做到360度全方位发光。因此，现今的LED灯中，散热面积与发光面积是相互矛盾的，因此，现有的LED日光灯，都不能做到在满足散热需求的情况下的360度全方位发光。
而且一般的LED灯泡，结构和功能都比较单一，只能实现照明功能，无法具有其他功能，因此，也不能给使用者其他感受和体验。
发明内容
本发明所要解决的技术问题是提供一种既具有较好的散热性能、制作方便，又能满足全方位发光的LED灯丝。
本发明解决上述技术问题所采用的技术方案为：一种新型LED灯丝，包括至少一条灯丝基板，其特征在于：所述至少一条灯丝基板包括依次连接的至少两段基板，所述基板具有两个相对的发光面，并且相邻的基板的发光面以灯丝基板的延伸方向为轴相互扭转，所述发光面上设置LED发光元件。
优选的，至少两段基板的发光面以该灯丝基板的长度方向为轴，向同一个方向依次扭转，或者是往复扭转。
为了防止基板扭转时损坏基板上的线路，相邻的基板的发光面之间相互扭转的角度不超过90度。
优选的，相邻的基板的发光面之间相互扭转的角度相同或者不同。
优选的，所述基板的两个相对的发光面，一个面上设有LED发光元件或者两个面上均设有发光元件。
优选的，至少一条灯丝基板包括至少两条，至少两条灯丝基板的一端通过引线连接至外界电源，至少两条灯丝基板另一端通过连接件相互连接。
优选的，所述连接件结构上连接所述至少两条灯丝基板，并且使至少两条灯丝基板在电路上形成断路；或者所述连接件结构上连接所述至少两条灯丝基板，并且同时电连接所述至少两条灯丝基板。
作为本发明的一个优选实施例，并且为了便于加工，所述灯丝基板为条状的基板，并且该灯丝基板具有相对的两个面，所述灯丝基板分成多段，并且相互之间以灯丝基板的延伸方向为轴扭转进而形成所述多段基板，所述灯丝基板的相对的两个面形成所述基板的发光面。
优选的，所述基板为导电基板、绝缘基板、PCB板、SMD封装元件、或者COB封装元件。
与现有技术相比，本发明的优点在于该LED灯丝结构，不但加工方便，成品率高，而且结构简单，集成方便，便于散热，而且，该灯丝基板包括多段基板，多段基板之间相互扭转一定角度，因此，形成多个朝向不同方向的发光面，使得LED灯丝能够朝多个角度发光进而形成更加均匀全方位的发光效果。而且，多个灯丝上的LED发光元件也可以设置成多种电连接方式，进而可以设置不同颜色的LED发光元件，达到多种发光效果的控制。
附图说明
图1为具有本发明第一实施例的LED灯丝的灯泡。
图2为本发明第一实施例的LED灯丝。
图3为本发明第二实施例的LED灯丝。
图4为本发明第三实施例的LED灯丝。
图5为本发明第四实施例的LED灯丝。
图6为具有本发明第五实施例的LED灯丝的灯泡的示意图。
图7为具有本发明第六实施例的LED灯丝的灯泡的示意图。
图8为具有本发明第七实施例的LED灯丝的灯泡的示意图。
图9为该灯丝基板的示意图。
图10为另一种灯丝基板的示意图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1-2所示，本发明的第一实施例的LED灯，包括灯头1，以及位于灯头1内的驱动器，所述灯头1固定连接有透光罩壳3，该透光罩壳3为透光材料制成或者是透光结构。如图1、2所示，该透光罩壳3为球形灯泡。
所述灯头1上固定有LED灯丝，该LED灯丝位于透光罩壳3内侧。该灯头1上还连接有连接柱4，该连接柱4同样位于透光罩壳3内，LED灯丝设于连接柱4上，并且LED灯丝通过引线连接至连接柱4，并且连接至灯头1内的驱动器，为灯丝进行供电控制。
该LED灯丝，如图1、2所示，包括至少一个条状的灯丝基板5，灯丝基板5的至少一端通过引线7与灯头1内的驱动器电连接，即与外界电源连接。该灯丝基板5为条状基板，所述灯丝基板5具有相对的两个面，所述至少一条灯丝基板5包括至少两段沿其延伸方向依次相连的基板51，相邻的基板51之间以灯丝基板的延伸方向为轴向，相互呈一定角度扭转，进而该相对的两个面随着基板51的扭转也相互扭转，形成基板51的两个相对的发光面52。该基板51的两个相对的发光面52为朝向两个不同方向的面，该发光面52上可以设置LED发光元件6，使得朝向不同的方向均有光射出。
优选的，如图1、2所示，该灯丝基板5包括多段相连的基板51，该多段基板51以灯丝基板5的延伸方向为轴向，向一个方向依次扭转一定角度。当多段基板51依次扭转时，灯丝基板5的相对的两个面也相互扭转，即该发光面52与基板一同扭转，因此，能够形成多段基板51的发光面52朝向不同角度的情况，使得多段基板51的发光面52之间以灯丝基板5的长度方向为轴向相互扭转，进而使得该灯丝基板能够向各个角度均发出光线，使得发光更加全方位。
在此需要指出的是，该多段基板51以灯丝基板5的延伸方向为轴，相邻的基板51之间扭转一定角度，可以是多段基板51以灯丝基板5的延伸方向为轴，向同一方向依次扭转，例如都绕轴顺时针扭转或者逆时针扭转；或者也可以是往复扭转，即扭转的方向不定。并且多段基板51之间扭转的角度可以相同，也可以不同，以此来形成朝向不同位置的发光面52。而且，可以在基板51两个相对的发光面上同时设置LED发光元件6，也可以只在一个面上设置LED发光元件6。并且，该相邻的基板之间相对扭转的角度，不超过90度，优选地，不超过45度。
并且再此需要指出的是，因为上述的多段基板51在扭转之前，每段的发光 面52都朝向同一方向，即该灯丝基板5本身就具有两个相对的面，因此，当多段基板51相互扭转之后，该相对的面就随着多段基板51扭转形成每段基板1的发光面52，进而形成发光面52绕灯丝基板5的延伸方向为轴扭转的形状。该基板51的相互扭转，目的是为了发光面52的扭转。相邻的基板51之间的发光面52的扭转的角度可以相同也可以不同，可以是沿灯丝基板5的延伸方向依次向一个方向扭转，或者是往复扭转。
其实，也可以是灯丝基板5的多段基板51始终保持一致不扭转的状态，但是在其上设置相互扭转的发光面52即可。该多段的基板51相互扭转的目的，是为了相邻的基板51之间的发光面52的相互扭转。如果能够在不扭转灯丝基板51的情况下直接设置扭转的发光面52也可以实现本发明的目的。并且，该发光面以灯丝基板5的延伸方向为轴向相互之间扭转，其实就是在灯丝基板5的延伸方向垂直的截面上，每段基板51的发光面52相互错开设置，以形成以灯丝基板5的延伸方向为中心轴，朝向多个不同方向的发光面，进而实现多角度的全面发光。
这样的设置，使得灯丝在加工的时候，只要先将整个条状的灯丝基板5上布置上LED发光元件6，然后再将灯丝基板5按照多段基板51的设置相互扭转，将多段基板51扭转后的整个灯丝基板5设置在连接柱4上即可。由于相邻的基板之间的扭转角度不超过60度，即相邻的基板之间的发光面52之间的扭转角度不超过60度，所以，灯丝基板的扭转不会造成连接线路的断裂或者损坏，而且，也可以得到多个角度发光的灯丝基板。
另外，灯丝基板可以为如图1、2所示的两条竖直设置的灯丝基板，该两个灯丝基板的顶部通过连接件8连接，灯丝基板5和连接件8呈U型，灯丝基板5的底端分别连接至连接柱4，灯丝基板5也可以是其他形状。该连接件8可以是电路上连接两条灯丝基板以及结构上同时连接至少两条灯丝基板；也可以是仅仅结构连接灯丝基板，在电路上使得两条灯丝基板5之间形成断路。
该灯丝基板5的材料不限于金属，有机玻璃，PVC，塑料，蓝宝石，陶瓷和硅胶，可以是其中的一种，或是上述材料中的多种材料通过拼接和/或嵌套方式制成。例如如图9所示，为其中一种灯丝基板5的示意图，该灯丝基板5为金属条状基板，并且该灯丝基板5本身作为一极引线引出，灯丝基板5上有多个区域用于设置LED发光元件，以形成多段沿灯丝基板5的延伸方向依次连接的基板51，多段基板51均包括两个朝向相反的发光面52，发光面52上设置有LED发光元件，并且基板51的发光面52以灯丝基板5的延伸方向为轴向相互扭转，扭转的位置上不设置有LED发光元件。并且为了保证不短路，每个基板51上或者多个基板51上均设有断路连接件53，使得多个基板51之间形成电路上的断路和结构上的连接。此时，该基板51也为金属基板。
因此，本领域技术人员可以了解到，该灯丝基板5可以是金属基板，即导电基板，也可以是PCB板，或者也可以是其他玻璃等即绝缘基板，另外也可以是如图10所示的，该灯丝基板5为条状连接基板，该条状连接基板上固定连接有多个SMD封装元件，该多个SMD封装元件即为所述基板51，该SMD封装元件包括两个相对的发光面52，并且，其至少一个发光面52上封装有LED发光元件6。因此，该基板51的形式可以是多种，只要是具有两个相对设置的发光面，并且其上能够设置LED发光元件即可。并且该基板也可以是COB封装元件。
该LED发光元件，可以是相互并联也可以相互串联，该LED发光元件可以是LED芯片，也可以是LED灯珠，LED芯片可以为LED芯片为垂直芯片、水平芯片、白光芯片或倒装芯片。而且该灯丝基板1的LED发光元件可以用透明胶、导电胶，例如硅胶、改性树脂、环氧树脂、银胶或铜胶固定在灯丝基板5上，然后LED发光元件6之间可以通过设于灯丝基板5上的芯片连接线或者灯丝基板5上预留的线路相互串联或并联。LED发光元件6的外侧还可以涂覆有具有保护或者发光功能的透明介质层，如图10所示，部分的LED发光元件6上设置有透明介质层，部分的LED发光元件6上并没有设置透明介质层。该透明介质层的材料为硅胶、环氧树脂胶和LED发光粉胶中的一种或几种的组合。
并且，该灯丝基板5包括多段基板51，可以是该多段基板51分开成型后相互连接在一起，也可以是该灯丝基板5为一体的条状基板，然后将灯丝基板5分成多段后以灯丝基板5的延伸方向为轴向，相互扭转，形成多段基板51相互扭转的形式，即可实现多段基板51的发光面52的相互扭转。并且在扭转的部位不设置LED发光元件。
优选的，该灯丝基板5为条状的基板，具有两个相对的发光面，发光面上可以是部分面，或者是其中一个面，或者是两个面上均设有LED发光元件6，然后将灯丝基板5分段绕其长度方向为轴进行扭转加工，使得灯丝基板5形成多段扭转的形式，进而形成多段的基板51的发光面52的相互扭转。需要指出的是，这样一条条状的灯丝基板5加工成多段基板51的形状，使得整体LED发光元件6可以整体布局整体加工，然后再形成扭转灯丝的形状，不但加工方便、效率高，而且发光均匀。
如图3所示，为本发明的第二实施例，该实施例中的LED灯丝包括三个条状的灯丝基板5，该灯丝基板5包括位于下方的两个，以及位于上方的一个，位于上方的灯丝基板5为环形，两侧分别连接至下方的两个灯丝基板5的顶部，下方的两个灯丝基板5的底端连接至连接柱4。该三个灯丝基板5可以通过连接线连接，也可以基板直接相连，每个灯丝基板5均沿其延伸方向分为多段，每段基板51之间均以灯丝基板5的延伸方向为轴，扭转一定角度。因此，本领域技术人员可以了 解到，该灯丝基板5也不一定是直线，可以是环形，S型，或者其他规则或者不规则形状，只要基板上的发光面以灯丝基板的延伸方向为轴扭转即可。
如图4所示，为本发明的第三实施例，该实施例中的LED灯丝包括两个条状的灯丝基板5，两个灯丝基板5呈“人”字形设置，上端相互连接在一起，下端与连接柱4连接。每个灯丝基板5都包括以灯丝基板5的延伸方向为轴扭转的多段基板51，多段基板51的发光面52之间均绕该灯丝基板5的延伸方向为轴向相互扭转，并且，基板51上都设有LED发光元件6。并且，本领域技术人员也可以发现，该两条灯丝基板5可以是两条分体的灯丝基板5的顶部相互固定连接在一起，也可以是整条一条的基板，经过整形后形成两条人字形的灯丝基板5。
如图5所示，为本发明第四实施例，该实施例中LED灯丝包括四个灯丝基板5，四个灯丝基板5的顶端通过连接件8相互连接在一起，并且四个灯丝基板5的底端均通过引线7与连接柱4连接。四个灯丝基板5从上往下沿周向均匀分布，并且向下向外散开设置。并且每个灯丝基板5均包括多段基板51，多段基板51以灯丝基板5的延伸方向为轴，相邻的基板依次向同一方向旋转一定角度。在此需要指出的是，该LED灯丝包括多条灯丝基板时，多条灯丝基板5可以相互连接，也可以不连接，各自通过引线或者直接与灯头1连接。
如图6所示，为本发明第五实施例，该实施例中的灯泡也为球形灯泡，即透光罩壳3为球形，透光罩壳3的底部与灯头1固定连接，透光罩壳3内设有灯丝基板5，该灯丝基板5竖直设置在灯头1上，并且其一端与灯头1固定并且电连接，灯丝基板5包括多段基板51，多段基板51之间绕灯丝基板1的延伸方向为轴相互扭转，即绕竖直方向为轴扭转，扭转的角度不超过60度。灯丝基板5具有相对的两个发光面52，多段基板51扭转后，每段基板51的发光面52相互也扭转，形成多个朝向不同的发光面。该多段基板51的两个发光面52上均设有LED发光元件6。
如图7所示，为本发明的第六实施例，该实施例中的灯为管状灯，透光罩壳3为管状，并且其内中空设有LED灯丝，该LED灯丝的两端均连接至透光罩壳3的两端的灯头1，灯头1内设有驱动器用于与外界电源电连接。该LED灯丝包括一条条状的灯丝基板5，该灯丝基板5本身就具有相对的两个平面，该灯丝基板5分成多段基板51，并且每段基板51沿该灯丝基板5的延伸方向为轴相互扭转，进而该灯丝基板5的两个相对的平面即可形成基板51的两个相对的发光面52，并且每段基板51的发光面52之间以灯丝基板5的延伸方向为轴依次扭转一定角度，该角度小于60度，进而形成多段发光面52朝向不同的基板51，进而实现多角度的LED发光。基板51的两个相对的发光面52可以均设有LED发光元件6。
如图8所示，为本发明的第七实施例，该实施例中的透光罩壳3为ST64规格灯泡，并且其内设有LED灯丝，LED灯丝的一端与灯头1固定连接，并且该LED灯丝 包括一条条状的灯丝基板5，该灯丝基板5包括依次相连的多个基板51，该基板51为环形，并且具有相对的发光面52，上述几个实施例中，该发光面52均为平面，但是本领域技术人员可以了解到，该发光面52也可以是曲面，也可以是其他面，例如凹面，或者凸面，或者半凹半凸的面或者不规则曲面。只要基板51的两个发光面52的朝向相反即可。该环形的基板51上设有环形分布的LED发光元件6。并且在此需要指出的是，该基板51的形状也可以不限于上述的形状，基板51可以是环形，环形，方形，或者其他的规则或者不规则的形状均可。每个多段基板51的形状可以相同，也可以不同，都可以根据需要自行设置。
上述LED灯丝结构，不但加工方便，成品率高，而且结构简单，集成方便，并且各个灯丝基板之间可以配置成各种形状，灯丝基板与灯丝基板之间具有较大的空隙便于散热，而且，该灯丝基板包括多段基板，多段基板之间相互扭转一定角度，因此，形成多个朝向不同方向的发光面，使得LED灯丝能够朝多个角度发光进而形成更加均匀全方位的发光效果。而且，多个灯丝上的LED发光元件也可以设置成多种电连接方式，例如串联、并联等等，进而可以设置不同颜色的LED发光元件，达到多种发光效果的控制。并且该LED灯丝，可以用于多种灯泡结构，例如球泡灯、或者管状灯等，本领域技术人可以根据需要自行设置，应用范围也较广。
尽管以上详细地描述了本发明的优选实施例，但是应该清楚地理解，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种新型LED灯丝，包括至少一条灯丝基板(5)，其特征在于：所述至少一条灯丝基板(5)包括依次连接的至少两段基板(51)，所述基板(51)具有两个相对的发光面(52)，并且相邻的基板(51)的发光面(52)以灯丝基板(5)的延伸方向为轴相互扭转，所述发光面(52)上设置LED发光元件(6)。
  2. 如权利要求1所述的一种新型LED灯丝，其特征在于：至少两段基板(51)的发光面(52)以该灯丝基板(5)的长度方向为轴，向同一个方向依次扭转，或者是往复扭转。
  3. 如权利要求1或2所述的一种新型LED灯丝，其特征在于：相邻的基板(51)的发光面(52)之间相互扭转的角度不超过90度。
  4. 如权利要求1或2所述的一种新型LED灯丝，其特征在于：相邻的基板(51)的发光面(52)之间相互扭转的角度相同或者不同。
  5. 如权利要求1所述的一种新型LED灯丝，其特征在于：所述基板(51)的两个相对的发光面(52)，一个面上设有LED发光元件(6)或者两个面上均设有发光元件(6)。
  6. 如权利要求1所述的一种新型LED灯丝，其特征在于：至少一条灯丝基板包括至少两条，至少两条灯丝基板(5)的一端通过引线(7)连接至外界电源，至少两条灯丝基板(5)另一端通过连接件(8)相互连接。
  7. 如权利要求6所述的一种新型LED灯丝，其特征在于：所述连接件(8)结构上连接所述至少两条灯丝基板(5)，并且使至少两条灯丝基板(5)在电路上形成断路；或者所述连接件(8)结构上连接所述至少两条灯丝基板(5)，并且同时电连接所述至少两条灯丝基板(5)。
  8. 如权利要求1-7中任一项所述的新型LED灯丝，其特征在于：所述灯丝基板(5)为条状的基板，并且该灯丝基板(5)具有相对的两个面，所述灯丝基板(5)分成多段，并且相互之间以灯丝基板(5)的延伸方向为轴扭转进而形成所述多段基板(51)，所述灯丝基板(5)的相对的两个面形成所述基板(51)的发光面(52)。
  9. 如权利要求1-7中任一项所述的新型LED灯丝，其特征在于：所述基板(51)为导电基板、绝缘基板、PCB板、SMD封装元件、或者COB封装元件。
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