WO2018014442A1 - Led filament - Google Patents

Led filament Download PDF

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Publication number
WO2018014442A1
WO2018014442A1 PCT/CN2016/098914 CN2016098914W WO2018014442A1 WO 2018014442 A1 WO2018014442 A1 WO 2018014442A1 CN 2016098914 W CN2016098914 W CN 2016098914W WO 2018014442 A1 WO2018014442 A1 WO 2018014442A1
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Prior art keywords
led filament
led
circuit board
bulb
flexible circuit
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Application number
PCT/CN2016/098914
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French (fr)
Chinese (zh)
Inventor
郑君韬
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上海顿格电子贸易有限公司
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Priority claimed from CN201620762937.7U external-priority patent/CN205806969U/en
Priority claimed from CN201610570670.6A external-priority patent/CN106015973A/en
Application filed by 上海顿格电子贸易有限公司 filed Critical 上海顿格电子贸易有限公司
Publication of WO2018014442A1 publication Critical patent/WO2018014442A1/en

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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

Definitions

  • the present invention relates to the field of lighting technologies, and in particular, to an LED filament.
  • LED light-emitting diode
  • the LED filaments used in the existing LED filament lamps on the market are often non-flexible LED filaments, the processing steps and structures are complicated, and because they cannot be bent, they are greatly limited in arrangement, and it is easy to cause LED filament lamps.
  • the phenomenon that the light output is uneven, can not meet the light distribution requirements.
  • the present invention aims to provide a flexible LED filament which utilizes a special flexible light strip to arrange a special shape to solve the problem of uneven light distribution and light distribution.
  • An LED filament is provided in a bulb, the LED filament comprising:
  • a plurality of chips are distributed over the flexible circuit board, and each of the chips is coated with a phosphor thereon, and the chip drives the phosphor to emit light.
  • the above LED filament wherein the flexible circuit board is provided with a conductive line, and the conductive line is electrically connected to each of the chips.
  • the above LED filament wherein the flexible circuit board is a printed circuit board or a thin metal substrate.
  • the above LED filaments wherein the phosphors are distributed in a plurality of blocks in a strip shape or isolated from each other on the flexible circuit board.
  • the above LED filament wherein the chip is a flip chip, and the phosphor is coated on the back surface of the flip chip.
  • the above LED filament wherein the chip is a surface mount chip, and the phosphor is coated on a surface of the surface mount chip.
  • the above LED filament wherein the flexible circuit board has a thickness of 0.2-0.5 mm and a width of 2 15mm.
  • the above LED filament, wherein the flexible circuit board is made of copper or aluminum.
  • the above LED filament wherein the LED filament is vertically arranged in a double spiral cone in the bulb.
  • the above LED filament wherein the LED filament is vertically arranged in a single spiral cone in the bulb.
  • the LED filament is arranged in a single spiral and two-headed cones in the bulb.
  • the LED filament of the above wherein the LED filament is arranged in a double spiral at both ends in the bulb.
  • the above LED filament wherein the LED filament is arranged in a ring shape in the bulb.
  • the above LED filament wherein the LED filament is fixed in the bulb through a stem.
  • the LED filament is configured to be mounted on a lamp cap, and the LED filament is electrically connected to a power source disposed in the lamp cap by spot welding or soldering.
  • the LED filament of the present invention solves the LED filament by using a special flexible circuit board and a chip and a phosphor distributed on the flexible circuit board to arrange a special shape in the bulb.
  • the problem of uneven light distribution and light distribution makes the LED filament lamp made 360° without dead angle illumination and uniform light emission.
  • 1a and 1b are two different structural views of the LED filament of the present invention.
  • FIGS. 2 to 6 are schematic views showing different arrangement patterns of LED filaments in a bulb according to the present invention.
  • the LED filament of the present invention comprises a flexible circuit board 10, preferably a printed circuit board (PCB) circuit board; a plurality of chips uniformly distributed on the surface of the PCB circuit board 10 provided with conductive lines; and a phosphor , applied to the surface of the chip.
  • PCB printed circuit board
  • the chip may be an SMD (Surface Mounted Device) chip, and a phosphor is coated on the surface of the SMD (surface mount chip); or the chip may be a flip chip, and the phosphor is coated on the surface The back of the flip chip.
  • the chip (because the surface of the chip is covered by phosphor, so the chip cannot be marked in the figure) is divided into several pieces and evenly distributed on the PCB circuit board 10, and after the phosphor is coated on the chip, it can be formed as shown in FIG. 1a.
  • the entire strip of fluorescent strips 11 is shown or a uniform block of fluorescent blocks 12 as shown in Figure 1b. It should be noted that FIG.
  • FIG. 1a shows two types of LED filaments formed after coating a phosphor, wherein reference numeral 11 denotes that the phosphor is uniformly and continuously applied to the surface of the block chip and the surface of the exposed portion of the PCB board 10. Thus, a whole strip of fluorescent strip is formed; reference numeral 12 shown in Fig. 1b indicates that the phosphor is applied only to the surface of the block-like chip to form a uniformly distributed block of fluorescent regions.
  • the PCB circuit board 10 is a flexible printed circuit (FPC) or a thin metal substrate which can be bent in any shape and has a thickness of 0.2-0.5 mm and a width of 2-15 mm.
  • the material is copper. Or aluminum.
  • the PCB circuit board which can be bent in any shape can greatly simplify the processing steps and structural complexity of the PCB circuit board, and when assembling the filament lamp, the filament made of the PCB circuit board which can be bent in any shape can be used in the bulb
  • the bending arrangement is realized inside, which breaks the limitation of the arrangement of the LED filaments, thereby ensuring uniformity of the light output of the LED filament lamp.
  • the flexible LED filament (hereinafter referred to as the filament 1) of the present invention is fixed in the bulb (also called the bulb) 3 through the stem 2, and the bulb 3 is fixed to the cap.
  • a power source 5 is embedded in the lamp cap 4, and the filament 1 and the power source 5 are electrically connected by spot welding or soldering, thereby realizing the power source 5 to supply electric power to the filament 1.
  • the bulb 3 it is filled with a heat-conducting gas 6.
  • the arrangement manner of the filament 1 in the bulb 3 can be flexibly changed when assembling the LED filament lamp, for example, as shown in FIG. 2, the filament 1 It adopts double spiral conical vertical arrangement and is arranged in the bulb 3, which can realize 360 degree no dead angle illumination and uniform light emission;
  • the filament 1 is arranged in a single spiral conical vertical arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination, and uniform light emission;
  • the filament 1 is arranged in a single spiral and two-headed cone arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination and uniform light emission;
  • the filament 1 is arranged in the double-spiral two-headed cone arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination and uniform light emission;
  • the filament 1 is arranged in a circular arrangement (the filament 1 is similar to a flower shape when viewed from above), and is arranged in the bulb 3, and can also realize 360-degree non-dead illumination and uniform light emission.
  • the present invention provides a flexible LED filament that can be bent in any shape, and uses a special flexible circuit board to mount a chip and a phosphor on a flexible circuit board to form an LED filament.
  • Can be arranged inside the bulb Any special shape is arranged to solve the problem of uneven illumination and light distribution of the LED filament lamp, so that the LED filament lamp produced can realize 360° no dead angle illumination and uniform light emission.

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

Abstract

Disclosed is an LED filament (1) provided in a light bulb (3). The LED filament (1) comprises: a flexible circuit board (10); and several chips distributed on the flexible circuit board (10), wherein a fluorescent powder is coated on each chip, the chips driving the fluorescent powder to emit light. By using a specific flexible circuit board (10), and attaching chips and fluorescent powder to the flexible circuit board (10) to form a flexible LED filament (1), the formed LED filament (1) can be arranged in a light bulb (3) in any specific shape, solving the problem of light emitted from an LED filament lamp not being uniform and light distribution such that the formed LED filament lamp realises 360° light emission without a cut-off angle, and uniform light emission.

Description

一种LED灯丝LED filament 技术领域Technical field
本发明涉及照明技术领域，尤其涉及一种LED灯丝。The present invention relates to the field of lighting technologies, and in particular, to an LED filament.
背景技术Background technique
随着全球人口的不断增长和经济的持续发展，能源短缺和环境污染问题越来越凸显，全球节能与环保压力不断加大。LED(light-emitting diode，发光二极管)作为一种革命性的技术创新已被引入照明应用领域。LED照明产品具有节能环保、寿命长及发热量低的优势，越来越多的LED灯丝灯正逐渐取代传统的白炽灯等照明产品。With the continuous growth of the global population and the continued development of the economy, energy shortages and environmental pollution problems have become more and more prominent, and global energy conservation and environmental protection pressures continue to increase. LED (light-emitting diode) has been introduced into lighting applications as a revolutionary technological innovation. LED lighting products have the advantages of energy saving, long life and low heat generation. More and more LED filament lamps are gradually replacing traditional incandescent lamps and other lighting products.
然而，市场上现有的LED灯丝灯所使用的LED灯丝往往都是非柔性的LED灯丝条，加工步骤及结构复杂，且由于不能弯曲，在排布时受到很大的局限，容易造成LED灯丝灯出光效果不均匀的现象，无法满足配光要求。However, the LED filaments used in the existing LED filament lamps on the market are often non-flexible LED filaments, the processing steps and structures are complicated, and because they cannot be bent, they are greatly limited in arrangement, and it is easy to cause LED filament lamps. The phenomenon that the light output is uneven, can not meet the light distribution requirements.
发明内容Summary of the invention
鉴于上述技术问题，本发明旨在提供一种柔性LED灯丝，利用特制的柔性灯条排布特殊的形状，来解决出光不均匀和配光问题。In view of the above technical problems, the present invention aims to provide a flexible LED filament which utilizes a special flexible light strip to arrange a special shape to solve the problem of uneven light distribution and light distribution.
本发明解决上述技术问题的主要技术方案为：The main technical solutions of the present invention to solve the above technical problems are:
一种LED灯丝，其特征在于，设置于灯泡内，所述LED灯丝包括：An LED filament is provided in a bulb, the LED filament comprising:
柔性线路板；Flexible circuit board
若干芯片，分布于所述柔性线路板之上，且每片所述芯片之上均涂覆有荧光粉，所述芯片驱动所述荧光粉发光。A plurality of chips are distributed over the flexible circuit board, and each of the chips is coated with a phosphor thereon, and the chip drives the phosphor to emit light.
优选的，上述的LED灯丝，其中，所述柔性线路板上设置有导电线路，且所述导电线路与每片所述芯片电连接。Preferably, the above LED filament, wherein the flexible circuit board is provided with a conductive line, and the conductive line is electrically connected to each of the chips.
优选的，上述的LED灯丝，其中，所述柔性线路板为印制电路板或薄金属基板。Preferably, the above LED filament, wherein the flexible circuit board is a printed circuit board or a thin metal substrate.
优选的，上述的LED灯丝，其中，所述荧光粉呈条状或相互隔离的多个块状分布于所述柔性线路板之上。Preferably, the above LED filaments, wherein the phosphors are distributed in a plurality of blocks in a strip shape or isolated from each other on the flexible circuit board.
优选的，上述的LED灯丝，其中，所述芯片为倒装芯片，且所述荧光粉涂覆于所述倒装芯片的背面。Preferably, the above LED filament, wherein the chip is a flip chip, and the phosphor is coated on the back surface of the flip chip.
优选的，上述的LED灯丝，其中，所述芯片为表面贴装芯片，且所述荧光粉涂覆于所述表面贴装芯片的表面。Preferably, the above LED filament, wherein the chip is a surface mount chip, and the phosphor is coated on a surface of the surface mount chip.
优选的，上述的LED灯丝，其中，所述柔性线路板的厚度为0.2-0.5mm，宽度为2- 15mm。Preferably, the above LED filament, wherein the flexible circuit board has a thickness of 0.2-0.5 mm and a width of 2 15mm.
优选的，上述的LED灯丝，其中，所述柔性线路板的材质为铜或铝。Preferably, the above LED filament, wherein the flexible circuit board is made of copper or aluminum.
优选的，上述的LED灯丝，其中，所述LED灯丝呈双螺旋锥形竖向排布于所述灯泡内。Preferably, the above LED filament, wherein the LED filament is vertically arranged in a double spiral cone in the bulb.
优选的，上述的LED灯丝，其中，所述LED灯丝呈单螺旋锥形竖向排布于所述灯泡内。Preferably, the above LED filament, wherein the LED filament is vertically arranged in a single spiral cone in the bulb.
优选的，上述的LED灯丝，其中，所述LED灯丝呈单螺旋两头锥形排布于所述灯泡内。Preferably, in the above LED filament, wherein the LED filament is arranged in a single spiral and two-headed cones in the bulb.
优选的，上述的LED灯丝，其中，所述LED灯丝呈双螺旋两头锥形排布于所述灯泡内。Preferably, the LED filament of the above, wherein the LED filament is arranged in a double spiral at both ends in the bulb.
优选的，上述的LED灯丝，其中，所述LED灯丝呈环形排布于所述灯泡内。Preferably, the above LED filament, wherein the LED filament is arranged in a ring shape in the bulb.
优选的，上述的LED灯丝，其中，所述LED灯丝通过一芯柱固定于所述灯泡内。Preferably, the above LED filament, wherein the LED filament is fixed in the bulb through a stem.
优选的，上述的LED灯丝，其中，所述灯泡安装于一灯头上，所述LED灯丝通过点焊或焊锡与设置于所述灯头内的电源电连接。Preferably, the LED filament is configured to be mounted on a lamp cap, and the LED filament is electrically connected to a power source disposed in the lamp cap by spot welding or soldering.
上述技术方案具有如下优点或有益效果：本发明的LED灯丝，利用特制的柔性线路板，以及分布于柔性电路板上的芯片和荧光粉，在灯泡内排布出特殊的形状，解决了LED灯丝灯出光不均匀和配光问题，使得制成的LED灯丝灯实现360°无死角发光，出光均匀。The above technical solution has the following advantages or advantages: the LED filament of the present invention solves the LED filament by using a special flexible circuit board and a chip and a phosphor distributed on the flexible circuit board to arrange a special shape in the bulb. The problem of uneven light distribution and light distribution makes the LED filament lamp made 360° without dead angle illumination and uniform light emission.
附图说明DRAWINGS
参考所附附图，以更加充分的描述本发明的实施例。然而，所附附图仅用于说明和阐述，并不构成对本发明范围的限制。Embodiments of the present invention are described more fully with reference to the accompanying drawings. However, the attached drawings are for illustration and illustration only and are not intended to limit the scope of the invention.
图1a和图1b为本发明的LED灯丝的两种不同的结构图；1a and 1b are two different structural views of the LED filament of the present invention;
图2-图6为本发明的LED灯丝在灯泡内的不同排布方式的示意图。2 to 6 are schematic views showing different arrangement patterns of LED filaments in a bulb according to the present invention.
具体实施方式detailed description
在下文的描述中，给出了大量具体的细节以便提供对本发明更为彻底的理解。当然除了这些详细描述外，本发明还可以具有其他实施方式。In the following description, numerous specific details are set forth in the Of course, the invention may have other embodiments in addition to these detailed descriptions.
下面结合具体的实施例以及附图详细阐述本发明的LED灯丝。The LED filament of the present invention will be described in detail below in conjunction with specific embodiments and the accompanying drawings.
本发明的LED灯丝，包括柔性线路板10，优选为PCB(Printed circuit board，印制电路板)线路板；若干芯片，均匀分布设置于PCB线路板10上设置有导电线路的表面；以及荧光粉，涂覆于芯片表面。 The LED filament of the present invention comprises a flexible circuit board 10, preferably a printed circuit board (PCB) circuit board; a plurality of chips uniformly distributed on the surface of the PCB circuit board 10 provided with conductive lines; and a phosphor , applied to the surface of the chip.
其中，该芯片可以为SMD(Surface Mounted Device，表面贴装器件)芯片，荧光粉涂覆于该SMD(表面贴装芯片)的表面；或者该芯片可为倒装芯片，荧光粉涂覆于该倒装芯片的背面。并且优选的，芯片(因芯片表面被荧光粉覆盖，因此在图中无法标示出芯片)分为若干块均匀分布于PCB线路板10上，在芯片上涂覆荧光粉后，可形成如图1a所示的整条状的荧光条11或者如图1b所示的均匀块状分布的荧光块12。需要注意，图1a所示为涂覆荧光粉后形成的两种类型的LED灯丝，其中标号11表示荧光粉均匀且连续地涂覆于块状的芯片表面以及暴露的部分PCB线路板10的表面，从而形成整条状的荧光条的情形；图1b所示的标号12表示荧光粉仅涂覆于块状的芯片表面，形成均匀分布的一块块荧光区域。Wherein, the chip may be an SMD (Surface Mounted Device) chip, and a phosphor is coated on the surface of the SMD (surface mount chip); or the chip may be a flip chip, and the phosphor is coated on the surface The back of the flip chip. And preferably, the chip (because the surface of the chip is covered by phosphor, so the chip cannot be marked in the figure) is divided into several pieces and evenly distributed on the PCB circuit board 10, and after the phosphor is coated on the chip, it can be formed as shown in FIG. 1a. The entire strip of fluorescent strips 11 is shown or a uniform block of fluorescent blocks 12 as shown in Figure 1b. It should be noted that FIG. 1a shows two types of LED filaments formed after coating a phosphor, wherein reference numeral 11 denotes that the phosphor is uniformly and continuously applied to the surface of the block chip and the surface of the exposed portion of the PCB board 10. Thus, a whole strip of fluorescent strip is formed; reference numeral 12 shown in Fig. 1b indicates that the phosphor is applied only to the surface of the block-like chip to form a uniformly distributed block of fluorescent regions.
作为一个优选的实施例，PCB线路板10为可任意形状弯折的柔性线路板(Flexible Printed Circuit，FPC)或薄金属基板，其厚度为0.2-0.5mm，宽度为2-15mm，材质为铜或铝。采用可任意形状弯折的PCB线路板，可以大大地简化PCB线路板的加工步骤及结构复杂度，且在组装灯丝灯时，由可任意形状弯折的PCB线路板制成的灯丝可以在灯泡内实现弯曲排布，打破了LED灯丝排布的局限性，从而保证制成的LED灯丝灯出光效果均匀。As a preferred embodiment, the PCB circuit board 10 is a flexible printed circuit (FPC) or a thin metal substrate which can be bent in any shape and has a thickness of 0.2-0.5 mm and a width of 2-15 mm. The material is copper. Or aluminum. The PCB circuit board which can be bent in any shape can greatly simplify the processing steps and structural complexity of the PCB circuit board, and when assembling the filament lamp, the filament made of the PCB circuit board which can be bent in any shape can be used in the bulb The bending arrangement is realized inside, which breaks the limitation of the arrangement of the LED filaments, thereby ensuring uniformity of the light output of the LED filament lamp.
在实际组装制造LED灯丝灯时，可参照图2-图6，本发明的柔性LED灯丝(下文简称灯丝1)通过芯柱2固定在灯泡(也称泡壳)3内，灯泡3固定在灯头4上方，在灯头4内嵌入设置有电源5，灯丝1与电源5通过点焊或者焊锡电连接，从而实现电源5为灯丝1提供电能。在灯泡3里面，充满导热气体6。When actually assembling and manufacturing the LED filament lamp, referring to FIG. 2 to FIG. 6, the flexible LED filament (hereinafter referred to as the filament 1) of the present invention is fixed in the bulb (also called the bulb) 3 through the stem 2, and the bulb 3 is fixed to the cap. Above the 4, a power source 5 is embedded in the lamp cap 4, and the filament 1 and the power source 5 are electrically connected by spot welding or soldering, thereby realizing the power source 5 to supply electric power to the filament 1. Inside the bulb 3, it is filled with a heat-conducting gas 6.
作为优选的实施例，由于采用了可任意形状弯折的PCB线路板10，在组装LED灯丝灯时，灯丝1在灯泡3内的排布方式可灵活变化，例如如图2所示，灯丝1采用双螺旋锥形竖向排布方式，排布于灯泡3内，可实现360度无死角发光，出光均匀；As a preferred embodiment, since the PCB circuit board 10 which can be bent in an arbitrary shape is used, the arrangement manner of the filament 1 in the bulb 3 can be flexibly changed when assembling the LED filament lamp, for example, as shown in FIG. 2, the filament 1 It adopts double spiral conical vertical arrangement and is arranged in the bulb 3, which can realize 360 degree no dead angle illumination and uniform light emission;
或者如图3所示，灯丝1采用单螺旋锥形竖向排布方式，排布于灯泡3内，同样可实现360度无死角发光，出光均匀；Or as shown in FIG. 3, the filament 1 is arranged in a single spiral conical vertical arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination, and uniform light emission;
或者如图4所示，灯丝1采用单螺旋两头锥形排布方式，排布于灯泡3内，同样可实现360度无死角发光，出光均匀；Or as shown in FIG. 4, the filament 1 is arranged in a single spiral and two-headed cone arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination and uniform light emission;
或者如图5所示，灯丝1采用双螺旋两头锥形排布方式，排布于灯泡3内，同样可实现360度无死角发光，出光均匀；Or as shown in FIG. 5, the filament 1 is arranged in the double-spiral two-headed cone arrangement, and is arranged in the bulb 3, and can also realize 360-degree non-dead angle illumination and uniform light emission;
或者如图6所示，灯丝1采用环形排布方式(俯视时灯丝1类似一花朵形状)，排布于灯泡3内，同样可实现360度无死角发光，出光均匀。Or as shown in FIG. 6, the filament 1 is arranged in a circular arrangement (the filament 1 is similar to a flower shape when viewed from above), and is arranged in the bulb 3, and can also realize 360-degree non-dead illumination and uniform light emission.
综上所述，本发明提供的可任意形状弯折的柔性的LED灯丝，利用特制的柔性线路板，在柔性线路板上贴装芯片和荧光粉以制成LED灯丝，该制成的LED灯丝可在灯泡内排 布出任意特殊的形状，解决了LED灯丝灯出光不均匀和配光问题，使得制成的LED灯丝灯实现360°无死角发光，出光均匀。In summary, the present invention provides a flexible LED filament that can be bent in any shape, and uses a special flexible circuit board to mount a chip and a phosphor on a flexible circuit board to form an LED filament. Can be arranged inside the bulb Any special shape is arranged to solve the problem of uneven illumination and light distribution of the LED filament lamp, so that the LED filament lamp produced can realize 360° no dead angle illumination and uniform light emission.
对于本领域的技术人员而言，阅读上述说明后，各种变化和修正无疑将显而易见。因此，所附的权利要求书应看作是涵盖本发明的真实意图和范围的全部变化和修正。在权利要求书范围内任何和所有等价的范围与内容，都应认为仍属本发明的意图和范围内。 Various changes and modifications will no doubt become apparent to those skilled in the <RTIgt; Accordingly, the appended claims are to cover all such modifications and modifications The scope and content of any and all equivalents are intended to be within the scope and spirit of the invention.

Claims (15)

  1. 一种LED灯丝，其特征在于，设置于灯泡内，所述LED灯丝包括：An LED filament is provided in a bulb, the LED filament comprising:
    柔性线路板；Flexible circuit board
    若干芯片，分布于所述柔性线路板之上，且每片所述芯片之上均涂覆有荧光粉，所述芯片驱动所述荧光粉发光。A plurality of chips are distributed over the flexible circuit board, and each of the chips is coated with a phosphor thereon, and the chip drives the phosphor to emit light.
  2. 如权利要求1所述的LED灯丝，其特征在于，所述柔性线路板上设置有导电线路，且所述导电线路与每片所述芯片电连接。The LED filament of claim 1 wherein said flexible circuit board is provided with conductive traces and said conductive traces are electrically coupled to each of said chips.
  3. 如权利要求1所述的LED灯丝，其特征在于，所述柔性线路板为印制电路板或薄金属基板。The LED filament of claim 1 wherein said flexible circuit board is a printed circuit board or a thin metal substrate.
  4. 如权利要求1所述的LED灯丝，其特征在于，所述荧光粉呈条状或相互隔离的多个块状分布于所述柔性线路板之上。The LED filament according to claim 1, wherein said phosphors are distributed in a plurality of blocks in a strip shape or isolated from each other on said flexible wiring board.
  5. 如权利要求1所述的LED灯丝，其特征在于，所述芯片为倒装芯片，且所述荧光粉涂覆于所述倒装芯片的背面。The LED filament of claim 1 wherein said chip is a flip chip and said phosphor is applied to the back side of said flip chip.
  6. 如权利要求1所述的LED灯丝，其特征在于，所述芯片为表面贴装芯片，且所述荧光粉涂覆于所述表面贴装芯片的表面。The LED filament of claim 1 wherein said chip is a surface mount chip and said phosphor is applied to a surface of said surface mount chip.
  7. 如权利要求1所述的LED灯丝，其特征在于，所述柔性线路板的厚度为0.2-0.5mm，宽度为2-15mm。The LED filament of claim 1 wherein said flexible circuit board has a thickness of from 0.2 to 0.5 mm and a width of from 2 to 15 mm.
  8. 如权利要求1所述的LED灯丝，其特征在于，所述柔性线路板的材质为铜或铝。The LED filament of claim 1 wherein said flexible circuit board is made of copper or aluminum.
  9. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝呈双螺旋锥形竖向排布于所述灯泡内。The LED filament of claim 1 wherein said LED filaments are vertically arranged in a double helix cone within said bulb.
  10. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝呈单螺旋锥形竖向排布于所述灯泡内。The LED filament of claim 1 wherein said LED filaments are vertically arranged in a single spiral conical shape within said bulb.
  11. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝呈单螺旋两头锥形排布于所述灯泡内。The LED filament of claim 1 wherein said LED filaments are arranged in a single spiral conical shape within said bulb.
  12. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝呈双螺旋两头锥形排布于所述灯泡内。The LED filament of claim 1 wherein said LED filaments are arranged in a double helix cone shape within said bulb.
  13. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝呈环形排布于所述灯泡内。The LED filament of claim 1 wherein said LED filaments are arranged in a ring shape within said bulb.
  14. 如权利要求1所述的LED灯丝，其特征在于，所述LED灯丝通过一芯柱固定于所述灯泡内。The LED filament of claim 1 wherein said LED filament is secured within said bulb by a stem.
  15. 如权利要求1所述的LED灯丝，其特征在于，所述灯泡安装于一灯头上，所述LED灯 丝通过点焊或焊锡与设置于所述灯头内的电源电连接。 The LED filament of claim 1 wherein said bulb is mounted to a base, said LED The wire is electrically connected to a power source disposed in the base by spot welding or soldering.
PCT/CN2016/098914 2016-07-19 2016-09-13 Led filament WO2018014442A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201620762937.7U CN205806969U (en) 2016-07-19 2016-07-19 A kind of LED filament
CN2016105706706 2016-07-19
CN201610570670.6A CN106015973A (en) 2016-07-19 2016-07-19 LED lamp filament
CN2016207629377 2016-07-19

Publications (1)

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WO2018014442A1 true WO2018014442A1 (en) 2018-01-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040007981A1 (en) * 2000-08-15 2004-01-15 Hakuyo Denkyuu Kabushiki Kaisha Chained led light source structure
EP2236907A2 (en) * 2009-04-02 2010-10-06 Liquidleds Lighting Corporation LED bulb
CN202252991U (en) * 2011-09-07 2012-05-30 王元成 LED (Light-emitting Diode) lamp bulb
CN104465638A (en) * 2014-12-05 2015-03-25 苏州紫昱天成光电有限公司 LED lamp and filament thereof
CN105546488A (en) * 2016-01-29 2016-05-04 漳州立达信光电子科技有限公司 Flexible LED filament and LED filament lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040007981A1 (en) * 2000-08-15 2004-01-15 Hakuyo Denkyuu Kabushiki Kaisha Chained led light source structure
EP2236907A2 (en) * 2009-04-02 2010-10-06 Liquidleds Lighting Corporation LED bulb
CN202252991U (en) * 2011-09-07 2012-05-30 王元成 LED (Light-emitting Diode) lamp bulb
CN104465638A (en) * 2014-12-05 2015-03-25 苏州紫昱天成光电有限公司 LED lamp and filament thereof
CN105546488A (en) * 2016-01-29 2016-05-04 漳州立达信光电子科技有限公司 Flexible LED filament and LED filament lamp

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