WO2017185499A1 - 一种led全方向灯丝灯及其实现方法 - Google Patents

一种led全方向灯丝灯及其实现方法 Download PDF

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WO2017185499A1
WO2017185499A1 PCT/CN2016/086087 CN2016086087W WO2017185499A1 WO 2017185499 A1 WO2017185499 A1 WO 2017185499A1 CN 2016086087 W CN2016086087 W CN 2016086087W WO 2017185499 A1 WO2017185499 A1 WO 2017185499A1
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led
core
filament
metal wire
bulb
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PCT/CN2016/086087
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English (en)
French (fr)
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胡太荣
陈睿
彭杰
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横店集团得邦照明股份有限公司
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    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources

Definitions

  • the invention relates to an LED lamp technology, in particular to an LED omnidirectional filament lamp and a method for realizing the same.
  • LED energy-saving and environmentally-friendly light sources With the development of society, the use of LED energy-saving and environmentally-friendly light sources is becoming more and more widespread.
  • Traditional incandescent lamps have been gradually replaced by LED omnidirectional filament lamps.
  • the shape of LED omnidirectional filament lamps is similar to that of traditional incandescent lamps, including drive power.
  • the LED light source is composed of a plurality of light-emitting diodes, and the driving power source drives the light-emitting diodes to emit light for illumination.
  • the LED omnidirectional bulb has the following technical problems:
  • the structure is complex, it is not easy to assemble, the production efficiency is low, and the cost is high;
  • the object of the present invention is to overcome the deficiencies of the above prior art and provide a directional direction of LEDs with simple structure, low cost, high production efficiency, low labor intensity, high light transmittance, energy conservation, and meeting the US Energy Star standard. Filament light.
  • the invention also provides a method for realizing an LED omnidirectional filament lamp.
  • an LED omnidirectional filament lamp comprising a bulb, a core column is arranged in the bulb, a plurality of metal wires are arranged on the stem, and the LED filament is connected to the stem through the metal wire.
  • the angle between the stem and the LED filament is ⁇ 30°, and the light emitting surface of the LED filament is facing upward.
  • the bulb is filled with an inert gas.
  • the bulb is bonded to the lamp cap by a thermal conductive mud, and the PCB drive is bonded to the lamp cap through the thermal conductive mud.
  • the core column comprises a core cylinder, a core cap is arranged on the top of the core cylinder, and a buckle position is arranged at the core cap.
  • the core cap has a truncated cone shape.
  • the metal wire includes a first metal wire and a second metal wire, the first metal wire is connected to the core cap, and the second metal wire is connected to the core cylinder.
  • the metal wires are all disposed at the core cap.
  • the above implementation method of the LED omnidirectional filament lamp comprises the following steps:
  • the target light distribution of the bulb is established: it meets the North American Energy Star ES 2.0 standard. The point where the light intensity is 80% or more from 0° to 130° cannot deviate from the average of 35%, and the remaining points cannot deviate from the average value of 60. %. 130°-180° luminous flux can't be ⁇ 5%, which is the target of bulb light distribution design;
  • the core column is provided with a plurality of metal wires; the LED filaments are connected to the core column by metal wires;
  • the angle between the stem and the LED filament is ⁇ 30°, and the light emitting surface of the LED filament is upward;
  • the core column is welded on the bulb, and the inside of the bulb is filled with an inert gas, and the bulb and the PCB drive are bonded to the inside of the lamp cap through the thermal conductive mud, and the assembly is completed.
  • the filament light distribution in the steps (1) to (4) is approximately a Lambertian spot whose distribution satisfies the luminous intensity I ⁇ in a certain direction equal to the luminous intensity Io in the vertical direction of the light emitting surface of the light source multiplied by the cosine of the direction angle:
  • ⁇ is the inclination angle of the filament
  • ⁇ is the angle between the arbitrary illuminating ray of the whole lamp and the Y axis
  • I ⁇ is the intensity of light in the ⁇ direction
  • I ⁇ I ⁇ is analyzed by the data model, because the whole lamp is on each side Is rotationally symmetric, so choose a plane to analyze its average light intensity Satisfy:
  • the core column in the step (2) comprises a core cylinder, a core cap is arranged on the top of the core cylinder, and a buckle position is arranged at the core cap; the core cap has a truncated cone structure; the metal wire comprises a first metal wire and a second wire A metal wire, the first metal wire is connected to the core cap, and the second metal wire is connected to the core cylinder.
  • the present invention has the following advantages and effects:
  • the invention comprises a blister, a core column is arranged in the blister, a plurality of metal wires are arranged on the core column, the LED filament is connected to the core column through the metal wire, and the angle between the core column and the LED filament is ⁇ 30°, the LED
  • the light-emitting surface of the filament faces upward; it has the characteristics of simple structure, low cost, high production efficiency, low labor intensity, high light transmittance, energy conservation and meeting the US Energy Star standard.
  • the blister in the invention is filled with an inert gas, has high stability and good use effect.
  • the core column of the present invention comprises a core cylinder, a core cap is arranged on the top of the core cylinder, and a buckle position is arranged at the core cap; the core cap has a truncated cone structure, the structure is simple, the light transmittance is high, energy is saved, and energy can be Meet the US Energy Star standards.
  • the invention adjusts the illuminating inclination angle of the LED light bar to realize the Omni-directional Bulb light distribution requirement in the ENERGY STAR ES2.0 standard, and the optical transmittance is >96%, and the LED chip cost is reduced by 30%-50%.
  • FIG. 1 is a schematic exploded view of an LED omnidirectional filament lamp
  • FIG. 2 is a schematic structural view of a core post of Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic top plan view of Embodiment 2 of the present invention.
  • Figure 4 is a schematic diagram of the present invention.
  • an LED omnidirectional filament lamp includes a bulb, a core column is disposed in the bulb, and a plurality of metal wires are disposed on the stem, and the LED filament is connected to the stem through the metal wire, and the stem is connected.
  • the angle between the LED filament and the LED filament is ⁇ 30°, and the light-emitting surface of the LED filament is facing upward.
  • the blister in this embodiment is filled with an inert gas; the blister is bonded to the lamp cap through the thermal conductive mud, and the PCB drive is bonded to the lamp cap through the thermal conductive mud.
  • the core column in this embodiment comprises a core cylinder, a core cap is arranged on the top of the core cylinder, and a buckle position is arranged at the core cap; the core cap has a truncated cone structure.
  • the metal wire in this embodiment includes a first metal wire and a second metal wire, the first metal wire is connected to the core cap, and the second metal wire is connected to the core cylinder.
  • the above implementation method of the LED omnidirectional filament lamp comprises the following steps:
  • the target light distribution of the bulb is established: it meets the North American Energy Star ES 2.0 standard. The point where the light intensity is 80% or more from 0° to 130° cannot deviate from the average of 35%, and the remaining points cannot deviate from the average value of 60. %. 130°-180° luminous flux can't be ⁇ 5%, which is the target of bulb light distribution design;
  • the core column is provided with a plurality of metal wires; the LED filaments are connected to the core column by metal wires;
  • the angle between the stem and the LED filament is ⁇ 30°, and the light emitting surface of the LED filament is upward;
  • the core column is welded on the bulb, and the inside of the bulb is filled with an inert gas, and the bubble is passed through the heat conductive mud.
  • the shell and PCB drive are bonded inside the lamp cap and assembled.
  • the filament light distribution in the steps (1) to (4) is approximately a Lambertian spot whose distribution satisfies the luminous intensity I ⁇ in a certain direction equal to the luminous intensity Io in the vertical direction of the light emitting surface of the light source multiplied by the cosine of the direction angle:
  • ⁇ is the inclination angle of the filament
  • ⁇ is the angle between the arbitrary illuminating ray of the whole lamp and the Y axis
  • I ⁇ is the intensity of light in the ⁇ direction
  • I ⁇ I ⁇ is analyzed by the data model, because the whole lamp is on each side Is rotationally symmetric, so choose a plane to analyze its average light intensity Satisfy:
  • the core column in the step (2) comprises a core cylinder, a core cap is arranged on the top of the core cylinder, and a buckle position is arranged at the core cap; the core cap has a truncated cone structure; the metal wire comprises a first metal wire and a second wire A metal wire, the first metal wire is connected to the core cap, and the second metal wire is connected to the core cylinder.
  • the above structure and method can meet the Omni-directional in the Energy Star ES2.0 standard. Bulb light distribution requirements, and optical transmittance of >96%, LED chip cost reduction of 30%-50%.
  • the LED light bar is fixed on the core column by a metal wire, and the core column is welded on the bubble shell, and the inside of the bubble shell is filled with an inert gas, and the bulb shell and the drive are bonded to the inside of the lamp cap through the heat conductive mud. Low assembly cost and high efficiency.
  • the difference between the embodiment and the embodiment 1 is that the metal wires in the embodiment are all disposed at the core cap, and the shape of the LED filament changes, and the tungsten filament is used as an imitation incandescent lamp;
  • the Omni-directional Bulb light distribution in the Star ES2.0 standard requires optical transmittance of >96% and LED chip cost reduction by 30%-50%.
  • the main target market for this project is the North American market, so the design standard is based on the US Energy Star standard.
  • the following table is a comparison of some parameters of the project:

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

Abstract

一种LED全方向灯丝灯以及实现方法，包括泡壳（1），泡壳（1）内设置有芯柱（2），芯柱（2）上设置有若干金属导线（3），LED灯丝（4）通过金属导线（3）连接芯柱（2），芯柱（2）与LED灯丝（4）之间呈夹角≥30°设置，LED灯丝（4）的发光面朝上。具有结构简单、造价便宜、生产效率高、劳动强度低、透光率高、节约能源及满足美国能源之星标准等特点。

Description

一种LED全方向灯丝灯及其实现方法 技术领域
本发明涉及LED灯技术，具体来说是一种LED全方向灯丝灯及其实现方法。
背景技术
随着社会的发展，当今使用LED节能环保的光源应用越来越广，传统的白炽灯已经逐步被LED全方向灯丝灯取代，LED全方向灯丝灯的外形与传统的白炽灯相仿，包括驱动电源盒多个发光二极管组成的LED光源，驱动电源驱动发光二极管发光进行照明。
但现有技术中LED全方向球泡灯会存在以下技术问题：
(1)、结构复杂、不易装配、生产效率低，成本高；
(2)、整灯光分布不能满足美国能源之星标准。
发明内容
本发明的目的在于克服以上现有技术存在的不足，提供了一种结构简单、造价便宜、生产效率高、劳动强度低、透光率高、节约能源及满足美国能源之星标准的LED全方向灯丝灯。
本发明还提供了一种LED全方向灯丝灯的实现方法。
为了达到上述目的，本发明采用以下技术方案：一种LED全方向灯丝灯，包括泡壳，泡壳内设置有芯柱，芯柱上设置有若干金属导线，LED灯丝通过金属导线连接芯柱，芯柱与LED灯丝之间呈夹角≥30°设置，LED灯丝的发光面朝上。
所述泡壳内充满惰性气体。
所述泡壳通过导热泥粘接在灯头内，PCB驱动通过导热泥粘接在灯头内。
所述芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位。
所述芯帽呈圆台形结构。
所述金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
所述金属导线均设于芯帽处。
上述的LED全方向灯丝灯的实现方法，包括以下步骤：
(1)、球泡的目标光分布确立：满足北美能源之星ES 2.0标准，在0°到130°时光强80％以上的点不能偏离平均值的35％，其余的点不能偏离平均值60％。130°-180°光通量不能＜5％，以此作为球泡灯光分布设计的目标；
(2)、芯柱设置若干金属导线；LED灯丝通过金属导线连接芯柱；
(3)、芯柱与LED灯丝之间的夹角≥30°，且LED灯丝的发光面朝上；
(4)、芯柱通过焊接在泡壳上，泡壳内部充满惰性气体，通过导热泥将泡壳、PCB驱动粘接在灯头内部，装配完毕。
所述步骤(1)～(4)中灯丝光分布近似朗伯型光斑，其分布满足在某一方向上的发光强度Iθ等于该光源发光面垂直方向上的发光强度Io乘以方向角的余弦：
Iθ＝I0*COSθ；θ∈(0，90°)                 ①
根据数据模型得到：
Figure PCTCN2016086087-appb-000001
其中α为灯丝倾斜角、β为整灯任意发光光线与Y轴的夹角，Iβ为在β方向上的光强；由数据模型分析Iβ＝Iθ，因其整灯在各个面的是旋转对称的，故选取一个平面分析其平均光强
Figure PCTCN2016086087-appb-000002
满足：
Figure PCTCN2016086087-appb-000003
β∈(5、10……130)，则每个取值点偏离平均值的偏离：
Figure PCTCN2016086087-appb-000004
根据能源之星ES2.0标准中关于Omnidirectional—Lamps中关于光分布的要求：在0°到130°间隔取值5°所有点的光强80％以上的点不能偏离平均值的35％的要求；因其光源满足朗伯型分布则Iβ在区间[0,130]成递减分布，若要满足ES2.0要求则需要β满足β＝110°时其ΔI110＞35％，剩余点偏差值不得超过60％,即：
ΔI130≥60％，ΔI110＞35％        ⑤
求解①②③④⑤方程求解得到：α≥30°时可以满足ES2.0标准。
所述步骤(2)中的芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位；芯帽呈圆台形结构；金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
本发明相对于现有技术，具有如下的优点及效果：
1、本发明包括泡壳，泡壳内设置有芯柱，芯柱上设置有若干金属导线，LED灯丝通过金属导线连接芯柱，芯柱与LED灯丝之间呈夹角≥30°设置，LED灯丝的发光面朝上；具有结构简单、造价便宜、生产效率高、劳动强度低、透光率高、节约能源及满足美国能源之星标准等特点。
2、本发明中的泡壳内充满惰性气体，稳定性高，使用效果好。
3、本发明中的芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位；芯帽呈圆台形结构，结构简单，透光率高，节约能源，能满足美国能源之星标准。
4、本发明调整LED灯条的发光倾角实现能源之星ES2.0标准中的Omni-directional Bulb光分布要求,且光学透光率＞96％，LED芯片成本降低30％-50％。
附图说明
图1为一种LED全方向灯丝灯的爆炸结构示意图；
图2为本发明中实施例1芯柱处的结构示意图；
图3为本发明实施例2的俯视结构示意图；
图4为本发明的原理图。
图中标号与名称如下：
1 泡壳 2 芯柱
3 金属导线 4 LED灯丝
5 灯头 6 PCB驱动
具体实施方式
为便于本领域技术人员理解，下面结合附图及实施例对本发明作进一步的详细说明。
实施例1：
如图1～2及4所示，一种LED全方向灯丝灯，包括泡壳，泡壳内设置有芯柱，芯柱上设置有若干金属导线，LED灯丝通过金属导线连接芯柱，芯柱与LED灯丝之间呈夹角≥30°设置，LED灯丝的发光面朝上。
本实施例中的泡壳内充满惰性气体；泡壳通过导热泥粘接在灯头内，PCB驱动通过导热泥粘接在灯头内。
本实施例中的芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位；芯帽呈圆台形结构。
本实施例中的金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
上述的LED全方向灯丝灯的实现方法，包括以下步骤：
(1)、球泡的目标光分布确立：满足北美能源之星ES 2.0标准，在0°到130°时光强80％以上的点不能偏离平均值的35％，其余的点不能偏离平均值60％。130°-180°光通量不能＜5％，以此作为球泡灯光分布设计的目标；
(2)、芯柱设置若干金属导线；LED灯丝通过金属导线连接芯柱；
(3)、芯柱与LED灯丝之间的夹角≥30°，且LED灯丝的发光面朝上；
(4)、芯柱通过焊接在泡壳上，泡壳内部充满惰性气体，通过导热泥将泡 壳、PCB驱动粘接在灯头内部，装配完毕。
所述步骤(1)～(4)中灯丝光分布近似朗伯型光斑，其分布满足在某一方向上的发光强度Iθ等于该光源发光面垂直方向上的发光强度Io乘以方向角的余弦：
Iθ＝I0*COSθ；θ∈(0，90°)           ①
根据数据模型得到：
Figure PCTCN2016086087-appb-000005
其中α为灯丝倾斜角、β为整灯任意发光光线与Y轴的夹角，Iβ为在β方向上的光强；由数据模型分析Iβ＝Iθ，因其整灯在各个面的是旋转对称的，故选取一个平面分析其平均光强
Figure PCTCN2016086087-appb-000006
满足：
Figure PCTCN2016086087-appb-000007
β∈(5、10……130)，则每个取值点偏离平均值的偏离：
Figure PCTCN2016086087-appb-000008
根据能源之星ES2.0标准中关于Omnidirectional—Lamps中关于光分布的要求：在0°到130°间隔取值5°所有点的光强80％以上的点不能偏离平均值的35％的要求；因其光源满足朗伯型分布则Iβ在区间[0,130]成递减分布，若要满足ES2.0要求则需要β满足β＝110°时其ΔI110＞35％，剩余点偏差值不得超过60％,即：
ΔI130≥60％，ΔI110＞35％            ⑤
求解①②③④⑤方程求解得到：α≥30°时可以满足ES2.0标准。
所述步骤(2)中的芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位；芯帽呈圆台形结构；金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
采用上述结构和方法，可以满足能源之星ES2.0标准中的Omni-directional  Bulb光分布要求,且光学透光率＞96％，LED芯片成本降低30％-50％。LED灯条通过金属导线固定在芯柱，芯柱通过焊接在泡壳上，泡壳内部充满惰性气体，通过导热泥将泡壳、驱动粘接在灯头内部。组装成本低，效率高。
实施例2：
如图3所示，本实施例与实施例1不同之处在于：本实施例中的金属导线均设于芯帽处，LED灯丝形状发生变化，采用仿白炽灯钨丝状；能够满足能源之星ES2.0标准中的Omni-directional Bulb光分布要求，且光学透光率＞96％，LED芯片成本降低30％-50％。
对比实施例
本项目产品主要目标市场为北美市场，故设计标准根据美国能源之星标准下表是本项目产品部分参数对比：
Figure PCTCN2016086087-appb-000009
上述具体实施方式为本发明的优选实施例，并不能对本发明进行限定，其他的任何未背离本发明的技术方案而所做的改变或其它等效的置换方式，都包含在本发明的保护范围之内。

Claims (10)

  1. 一种LED全方向灯丝灯，其特征在于：包括泡壳，泡壳内设置有芯柱，芯柱上设置有若干金属导线，LED灯丝通过金属导线连接芯柱，芯柱与LED灯丝之间呈夹角≥30°设置，LED灯丝的发光面朝上。
  2. 根据权利要求1所述的LED全方向灯丝灯，其特征在于：所述泡壳内充满惰性气体。
  3. 根据权利要求1所述的LED全方向灯丝灯，其特征在于：所述泡壳通过导热泥粘接在灯头内，PCB驱动通过导热泥粘接在灯头内。
  4. 根据权利要求2所述的LED全方向灯丝灯，其特征在于：所述芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位。
  5. 根据权利要求4所述的LED全方向灯丝灯，其特征在于：所述芯帽呈圆台形结构。
  6. 根据权利要求4所述的LED全方向灯丝灯，其特征在于：所述金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
  7. 根据权利要求4所述的LED全方向灯丝灯，其特征在于：所述金属导线均设于芯帽处。
  8. 根据权利要求1～7任一项所述的LED全方向灯丝灯的实现方法，其特征在于，包括以下步骤：
    (1)、球泡的目标光分布确立：满足北美能源之星ES 2.0标准，在0°到130°时光强80％以上的点不能偏离平均值的35％，其余的点不能偏离平均值60％。130°-180°光通量不能＜5％，以此作为球泡灯光分布设计的目标；
    (2)、芯柱设置若干金属导线；LED灯丝通过金属导线连接芯柱；
    (3)、芯柱与LED灯丝之间的夹角≥30°，且LED灯丝的发光面朝上；
    (4)、芯柱通过焊接在泡壳上，泡壳内部充满惰性气体，通过导热泥将泡壳、PCB驱动粘接在灯头内部，装配完毕。
  9. 根据权利要求8所述的LED全方向灯丝灯的实现方法，其特征在于： 所述步骤(1)～(4)中灯丝光分布近似朗伯型光斑，其分布满足在某一方向上的发光强度Iθ等于该光源发光面垂直方向上的发光强度Io乘以方向角的余弦：
    Iθ＝I0*COSθ；θ∈(0，90°)   ①
    根据数据模型得到：
    Figure PCTCN2016086087-appb-100001
    其中α为灯丝倾斜角、β为整灯任意发光光线与Y轴的夹角，Iβ为在β方向上的光强；由数据模型分析Iβ＝Iθ，因其整灯在各个面的是旋转对称的，故选取一个平面分析其平均光强
    Figure PCTCN2016086087-appb-100002
    满足：
    Figure PCTCN2016086087-appb-100003
    β∈(5、10……130)，则每个取值点偏离平均值的偏离：
    Figure PCTCN2016086087-appb-100004
    根据能源之星ES2.0标准中关于Omnidirectional—Lamps中关于光分布的要求：在0°到130°间隔取值5°所有点的光强80％以上的点不能偏离平均值的35％的要求；因其光源满足朗伯型分布则Iβ在区间[0,130]成递减分布，若要满足ES2.0要求则需要β满足β＝110°时其ΔI110＞35％，剩余点偏差值不得超过60％,即：
    ΔI130≥60％，ΔI110＞35％   ⑤
    求解①②③④⑤方程求解得到：α≥30°时可以满足ES2.0标准。
  10. 根据权利要求9所述的LED全方向灯丝灯的实现方法，其特征在于：所述步骤(2)中的芯柱包括芯柱体，芯柱体顶部设有芯帽，芯帽处设有卡扣位；芯帽呈圆台形结构；金属导线包括第一金属导线和第二金属导线，第一金属导线与芯帽连接，第二金属导线与芯柱体连接。
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