WO2011143936A1 - 气体放电灯生产自动排气台 - Google Patents

气体放电灯生产自动排气台 Download PDF

Info

Publication number
WO2011143936A1
WO2011143936A1 PCT/CN2011/000885 CN2011000885W WO2011143936A1 WO 2011143936 A1 WO2011143936 A1 WO 2011143936A1 CN 2011000885 W CN2011000885 W CN 2011000885W WO 2011143936 A1 WO2011143936 A1 WO 2011143936A1
Authority
WO
WIPO (PCT)
Prior art keywords
automatic exhaust
small long
station according
lamp
solenoid valve
Prior art date
Application number
PCT/CN2011/000885
Other languages
English (en)
French (fr)
Inventor
尹梦寒
Original Assignee
Yin Menghan
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 Yin Menghan filed Critical Yin Menghan
Publication of WO2011143936A1 publication Critical patent/WO2011143936A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385—Exhausting vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/39—Degassing vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/46—Machines having sequentially arranged operating stations
    • H01J9/48—Machines having sequentially arranged operating stations with automatic transfer of workpieces between operating stations

Definitions

  • the invention relates to a new concept, an automatic exhaust table for producing a gas discharge lamp, which is very suitable for large-scale production of high-quality gas discharge lamps, in particular to produce a gas discharge lamp without electrodes in the lamp, which belongs to the automatic illumination source for daily use. Production equipment field.
  • the electrodeless lamp is a new type of electric light source developed by the countries in the world. Because there is no electrode necessary for the conventional lamp in the lamp, the electric energy fed into the lamp generally needs to convert the mains circuit with a frequency of several tens of Hertz into several hundred. High frequencies above kilohertz or even several megahertz are fed into the lamp via a high frequency electric or magnetic field.
  • the electrodeless lamp is the ultimate form of gas discharge lamp, with excellent lighting characteristics and cost performance.
  • the key production process is exhaust vacuuming and aeration (argon or helium).
  • the higher the vacuum in the lamp the more precise the gas inflation control and the higher the luminous efficiency of the lamp.
  • conventional factories mainly use long-row cars and round-row cars to produce gas discharge lamps.
  • the advantage of the long row car is that the vacuum is higher and the production process arrangement is more suitable.
  • the disadvantage is that it can only be operated by hand, the production efficiency is low, and the product quality is discrete.
  • the advantage of circular row car is automatic production, high production efficiency, small dispersion of quality, the disadvantage is that the degree of vacuum is low, and the production process arrangement is not perfect.
  • the advantages and disadvantages of the two production lines are just the opposite.
  • the present invention proposes a complete automatic exhaust station, which combines the advantages of the above two production lines, overcomes the related shortcomings, and is particularly suitable for producing high quality gas discharge lamps.
  • the present invention provides an automatic exhaust station for producing a gas discharge lamp having an endless belt, a small long row car, a heating oven, a pneumatic wheel, and a transmission wheel.
  • the transmission wheel is provided on each side, one of which is a driving wheel driven by an electric motor, which runs smoothly at a constant speed, and drives the endless belt to make a circular motion.
  • the present invention overcomes the disadvantages of both the long-distance and the round-disc, and realizes the full-automatic production, the degassing of the lamp is very sufficient, the vacuum degree can be achieved, and the manufacturing process is superior.
  • the product consistency and quality have been greatly improved, the production efficiency has been greatly improved, the cost has been greatly reduced, and the cost performance of the gas discharge lamp is very prominent.
  • the automatic exhaust table is easy to process and maintain, and it is possible to replace a small long row car without affecting production.
  • FIG. 1 is a plan view of an automatic exhaust station in accordance with an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of an automatic exhaust station in accordance with an embodiment of the present invention.
  • FIG. 3 is a detailed cross-sectional view of a small long row of an automatic exhaust station in accordance with an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a station flow according to an embodiment of the present invention. detailed description
  • FIG. 1 is a plan view of the automatic exhaust table, which is composed of an endless conveyor belt (1), a small long row car (2), and a heating oven ( 3), the inflatable wheel (4), the transmission wheel (5).
  • the drive wheel (5) is provided on each side, one of which is a drive wheel driven by an electric motor, which runs smoothly at a constant speed and drives the endless belt (1) to make a circular motion.
  • the number of small long-distance cars (2) is between 20 and 60, connected to the endless conveyor belt (1).
  • Each car represents a station. With the movement of the conveyor belt, the car moves to the position according to the station. The bit must stop for 20-120 seconds.
  • the heating oven (3) is a continuous square pipe that completely covers the lamp on the small long row car (2), starting with the "pre-discharge manual leak detection” station, until the end of the "high vacuum exhaust” station The length can be adjusted by the lamp vacuum requirement.
  • Small long row car (2) The process of adding 3 ⁇ 4 and exhausting is carried out during the operation of the heating oven (3).
  • the pneumatic wheel (4) is centrally arranged, with 2-4 inflatable joints, each joint is controlled by a solenoid valve, and the electromagnetic wide connecting working gas inflation pipe is a sealing system.
  • the 2 is a cross-sectional view of the automatic exhaust station, indicating the specific positions of the endless belt (1), the small long row (2), the heating oven (3), the pneumatic wheel (4), and the transmission wheel (5).
  • the small long row car (2) is placed on the outer ring and the body is connected to the endless belt (1).
  • the drive wheel (5) is placed on each side to drive the endless belt (1) for circular motion.
  • the heating oven (3) is a continuous square pipe that completely covers the lamp on the small long row car (2).
  • the pneumatic wheel (4) is centrally located to facilitate the inflation of the tube on the small long row (2).
  • FIG 3 is a detailed sectional view of the small long row car (2).
  • the small long row car (2) includes a vacuum pump (7), a mechanical pump (8), a solenoid valve (9), a vacuum detecting tube (10), and a buffer tube ( 11), the heating and exhausting process can be completed independently.
  • the vacuum pump (7) is a high vacuum pumping system for optimum vacuum.
  • the mechanical pump (8) is a low vacuum pumping system for the initial elimination of air from the tube (6). 10-20 tube fittings are installed in the car, one electromagnetic wide (9) is installed in each joint, and the solenoid valve (9) and the vacuum pump (7) are connected by pipes.
  • the tube (6) has an exhaust pipe, which is manually inserted into the exhaust pipe On the solenoid valve (9).
  • the buffer tube (11) is a pumping transition space. Avoiding direct pumping of the tube (6) may damage the piping system.
  • the solenoid valve (9) is activated after receiving the control signal, and the lamp (6) and the vacuum pump (7) are sealed together. After the sealing is completed, the vacuum pump (7) and the mechanical pump (8) start working, and the air in the lamp (6) is drawn out to a vacuum state. Since the heating oven (3) covers more than 20 stations, the small long row runs in the heating oven (3), and the lamp (6) has enough time for heating, exhausting and in-light processing. It lasts longer than any existing equipment, so the lamp is fully degassed, the vacuum is very high, and the process flow is perfect, which greatly improves the quality of the gas discharge lamp.
  • Fig. 4 is a typical station flow, and an application example of the present invention will be described below with reference to Fig. 4.
  • the invention has the advantages of long-distance and round-row vehicles and overcomes the shortcomings of the two, realizes full-automatic production, the lamp is very degassed, can achieve a high degree of vacuum, and the manufacturing process is superior. Product consistency and quality have been greatly improved, production efficiency has been greatly improved, and costs have been greatly reduced. The cost performance of gas discharge lamps is outstanding.
  • the automatic exhaust table is easy to process and maintain, and it is possible to replace a small long row car without affecting production.
  • the present invention is not only a revolution in the manufacturing process of gas discharge lamps, but also particularly suitable for mass production of electrodeless lamps in lamps, achieving low-cost manufacturing of electrodeless lamps, and promoting the popularization of electrodeless lamps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Description

说 明 书 气体放电灯生产自动排气台 技术领域
本发明涉及一种全新概念的、 生产气体放电灯的自动排气台， 非常适合高质量气体放 电灯的规模化生产， 尤其是生产灯内无电极的气体放电灯， 属于日用照明光源的自动生产 设备领域。
背景技术
无极灯是当前世界各国重点开发的一种全新电光源， 因为灯内没有常规电灯所必须的 电极， 因此馈送入灯内的电能一般需将频率为几十赫兹的市电经电路转换为几百千赫兹甚 至数兆赫兹以上的高频， 经由高频的电场或磁场送入灯内。
无极灯是气体放电灯的终极形态， 具有优异的照明特性和性价比。 对于无极灯来说， 其关键生产工序是排气抽真空和充气 （氩或者氦）， 灯内真空度越高， 工作气体充气控制 越精确， 灯发光效率越高。 目前常规工厂主要使用长排车和圆排车生产气体放电灯。 长排 车的优点是真空度较高， 生产工艺安排较适宜， 缺点是只能手工操作， 生产效率低， 产品 质量离散大。 圆排车的优点是自动化生产， 生产效率高， 质量离散小， 缺点是真空度较低， 生产工艺安排不尽完善。 两种生产线的优缺点正好相反。
发明内容
针对以上问题， 本发明提出一套完整的自动排气台， 综合了以上两种生产线的优点， 克服了有关缺点， 特别适合生产高质量的气体放电灯。
具体来说， 本发明提供一种生产气体放电灯的自动排气台， 具有环形传送带、 小长排 车、 加热烘箱、 充气轮、 传动轮。 其中， 传动轮在两侧各设置一个， 其中一个是由电动机 驱动的主动轮， 匀速平稳运转， 带动环形传送带做环形运动。
通过使用上述构造， 本发明兼有长排车和圆排车的优点而克服了二者的缺点， 实现全 自动生产， 灯管去气非常充分， 能够达到很高的真空度， 制造工艺非常优越， 产品一致性 和质量大幅度提高， 生产效率极大提升， 成本大幅降低， 气体放电灯的性价比十分突出。 另外， 自动排气台的加工、 维护很方便， 可以任意更换某个小长排车而不影响生产。 附图说明
图 1是根据本发明实施例的自动排气台的平面图；
图 2是根据本发明实施例的自动排气台的剖面图；
图 3是根据本发明实施例的自动排气台的小长排车的剖面详图；
图 4是根据本发明实施例的工位流程示意图。 具体实施方式
本发明所述的自动排气台相当于普通长排车和圆排车的组合， 图 1是自动排气台的平 面图， 由环形传送带 （1 )、 小长排车 （2)、 加热烘箱 （3 )、 充气轮 （4)、 传动轮 （5 ) 组 成。 传动轮 （5 ) 在两侧各设置一个， 其中一个是由电动机驱动的主动轮， 匀速平稳运转， 带动环形传送带 （1 ) 做环形运动。 小长排车 （2) 的数量在 20〜60个之间， 连接在环形 传送带 （1 ) 上， 每个车代表一个工位， 随着传送带的运动， 车子按工位移动位置， 每一 个工位须停止 20— 120秒。 加热烘箱 （3 ) 是连续的方形管道， 完全覆盖小长排车 （2) 上 的灯管， 从 "预排人工检漏"工位开始， 一直到延伸到 "高真空排气"工位结束， 其长度 可由灯管真空度需求而调整。 小长排车 （2) 运行在加热烘箱 （3 ) 的过程中一直进行加 ¾ 和排气工艺。 充气轮（4)居中布置， 有 2— 4个充气接头， 每个接头由电磁阀控制充气量， 电磁阔接工作气体充气管道， 均为密封系统。
图 2是自动排气台的剖面图， 标明了环形传送带（1 )、 小长排车（2)、 加热烘箱（3 )、 充气轮（4)、 传动轮（5 )的具体位置。 小长排车（2)布置在外圈， 车身与环形传送带（1 ) 连接在一起。 传动轮 （5 ) 在两侧各设置一个， 带动环形传送带 （1 ) 做环形运动。 加热烘 箱 （3 ) 为连续的方形管道， 完全覆盖小长排车 （2) 上的灯管。 充气轮 （4) 居中布置， 便于为小长排车 （2) 上的灯管充气。
图 3是小长排车 （2) 的剖面详图， 小长排车 （2) 包含真空泵 （7)、 机械泵 （8)、 电 磁阀 （9)、 真空检测管 （10)、 缓冲管 （11 )， 能够独立完成加热和排气工艺。 真空泵 （7) 是高真空抽气系统， 可以达到最佳的真空度。 机械泵 （8 ) 是低真空抽气系统， 用于初步 排除灯管（6)管内的空气。 车上设置 10— 20个灯管接头， 每个接头安装一个电磁阔（9)， 电磁阀 （9) 和真空泵 （7) 通过管道连接。 灯管 （6) 带有排气管， 由人工把排气管插接 在电磁阀 （9) 上。 缓冲管 （11 ) 是抽气的过渡空间， 避免直接对灯管 （6) 抽气可能损坏 管道系统。 排气工作中， 电磁阀 （9 ) 接收控制信号后启动， 把灯管 （6) 和真空泵 （7) 密封在一起。 密封完成后， 真空泵 （7) 和机械泵 （8 ) 开始工作， 抽出灯管 （6 ) 内的空 气直到真空状态。 由于加热烘箱 （3 ) 覆盖了 20个以上的工位， 小长排车运行在加热烘箱 (3 ) 的过程中， 灯管 （6) 有足够的时间进行加热、 排气和灯内工艺处理， 比任何现有设 备持续的时间长的多， 所以灯管去气充分， 真空度非常高， 工艺处理流程完善， 极大提高 了气体放电灯的品质。
图 4是一个典型的工位流程， 以下结合图 4说明本发明的应用实例。
1位〜 20位： " 1位上灯" 与 "2位上灯"是人工把灯管插接到电磁阀上。 "3位预排 人工检漏"是初步检漏， 确保灯管进入加热烘箱前不漏气， 电磁阀在 3位启动。 从 4位到 16位是加热和排气工艺， 最终达到<10— 3帕斯卡的真空度。 " 17位排气"是最终检验工位， 确认高真空度。 " 18充氩分解激活"与 " 19充氩分解激活"完成工作气体充入、 汞齐激活 与灯管烧结工艺， 制造流程结束。 "20位上灯"是人工把灯管从电磁阀上取下来， 产品直 接入库。
以上分析可知， 本发明兼有长排车和圆排车的优点而克服了二者的缺点， 实现全自动 生产， 灯管去气非常充分， 能够达到很高的真空度， 制造工艺非常优越， 产品一致性和质 量大幅度提高， 生产效率极大提升， 成本大幅降低， 气体放电灯的性价比十分突出。 另外， 自动排气台的加工、 维护很方便， 可以任意更换某个小长排车而不影响生产。
本发明不仅是气体放电灯制造工艺的革命， 而且特别适合大规模生产灯内无电极的无 极灯， 实现无极灯的低成本制造， 能够促进无极灯的普及化。

Claims

权 利 要 求 书
1、 一种生产气体放电灯的自动排气台， 具有环形传送带 （1 )、 小长排车 （2)、 加热 烘箱 （3 )、 充气轮 （4)、 传动轮 （5 )。 其特征是传动轮 （5 ) 在两侧各设置一个， 其中一 个是由电动机驱动的主动轮， 匀速平稳运转， 带动环形传送带 （1 ) 做环形运动。
2、 根据权利要求 1所述自动排气台， 其特征是小长排车 （2) 的数量在 20〜60个之 间， 连接在环形传送带 （1 ) 上， 每个车代表一个工位。
3、 根据权利要求 1所述自动排气台， 其特征是小长排车 （2) 按工位移动位置， 每一 个工位须停止 20— 120秒。
4、 根据权利要求 1所述自动排气台， 其特征是加热烘箱 （3 ) 是连续的方形管道， 完 全覆盖小长排车 （2) 上的灯管， 其长度可由灯管真空度需求而调整。
5、 按权利要求 1 所述自动排气台， 其特征是小长排车 （2) 运行在加热烘箱 （3 ) 的 过程中一直进行加热和排气工艺。
6、 按权利要求 1所述自动排气台， 其特征是充气轮 （4) 居中布置， 有 2— 4个充气 接头， 每个接头由电磁阀控制充气量， 电磁阔接工作气体充气管道， 均为密封系统。
7、 按权利要求 1所述自动排气台， 其特征是小长排车 （2) 包含真空泵 （7)、 机械泵 (8)、 电磁阀 （9)、 真空检测管 （10)、 缓冲管 （11 )， 能够独立完成加热和排气工艺。
8、 按权利要求 1所述自动排气台， 其特征是小长排车 （2) 上设置 10— 20个灯管接 头， 每个接头安装一个电磁阀 （9)， 电磁阀 （9) 和真空泵 （7) 通过管道连接。
9、 按权利要求 1所述自动排气台， 其特征是灯管 （6) 带有排气管， 由人工把排气管 插接在电磁阀 （9) 上。
10、 按权利要求 1 所述自动排气台， 其特征是电磁阀 （9) 接收控制信号后启动， 把 灯管 （6) 和真空泵 （7) 密封在一起。
PCT/CN2011/000885 2010-05-17 2011-05-23 气体放电灯生产自动排气台 WO2011143936A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201010176276 CN102110559B (zh) 2010-05-17 2010-05-17 气体放电灯生产自动排气台
CN201010176276.7 2010-05-17

Publications (1)

Publication Number Publication Date
WO2011143936A1 true WO2011143936A1 (zh) 2011-11-24

Family

ID=44174681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/000885 WO2011143936A1 (zh) 2010-05-17 2011-05-23 气体放电灯生产自动排气台

Country Status (2)

Country Link
CN (1) CN102110559B (zh)
WO (1) WO2011143936A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117190093A (zh) * 2023-10-25 2023-12-08 惠州市沃生照明有限公司 一种可完全收纳的台灯

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102891056B (zh) * 2011-07-19 2015-04-22 普罗斯电器（中国）有限公司 一种带有氩气保护的传送装置
CN102760626B (zh) * 2012-07-22 2015-05-13 安徽九州天极之光股份有限公司 无极灯微汞制备的工艺方法
CN103000489B (zh) * 2012-11-02 2015-02-11 李家凌 一种灯泡的连续生产装置
CN104217908B (zh) * 2014-09-05 2016-08-24 李家凌 一种卧式电光源生产用长排机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB767910A (en) * 1954-03-23 1957-02-06 Sylvania Electric Prod Valve construction
GB2149568A (en) * 1983-10-28 1985-06-12 Toshiba Kk Exhaust apparatus for electric lamps
CN201063329Y (zh) * 2007-05-09 2008-05-21 上海丰翠明光电有限公司 多工位多夹具圆排气机
CN101329973A (zh) * 2008-07-16 2008-12-24 徐州欧源照明有限公司 灯管排气机
CN201247751Y (zh) * 2008-08-27 2009-05-27 宜兴市晨虹照明电器有限公司 荧光灯排气装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829911A (en) * 1955-12-16 1960-03-09 Sylvania Electric Prod Improvements in and relating to apparatus for making electron tubes
US2916056A (en) * 1956-03-26 1959-12-08 Sylvania Electric Prod Lead-in wire positioning apparatus
CN100524586C (zh) * 2006-12-26 2009-08-05 江苏浩明光电科技股份有限公司 节能灯管自动封离机
CN201146166Y (zh) * 2008-01-28 2008-11-05 临安曙光机械设备厂 半自动长排车

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB767910A (en) * 1954-03-23 1957-02-06 Sylvania Electric Prod Valve construction
GB2149568A (en) * 1983-10-28 1985-06-12 Toshiba Kk Exhaust apparatus for electric lamps
CN201063329Y (zh) * 2007-05-09 2008-05-21 上海丰翠明光电有限公司 多工位多夹具圆排气机
CN101329973A (zh) * 2008-07-16 2008-12-24 徐州欧源照明有限公司 灯管排气机
CN201247751Y (zh) * 2008-08-27 2009-05-27 宜兴市晨虹照明电器有限公司 荧光灯排气装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117190093A (zh) * 2023-10-25 2023-12-08 惠州市沃生照明有限公司 一种可完全收纳的台灯
CN117190093B (zh) * 2023-10-25 2024-04-12 惠州市沃生照明有限公司 一种可完全收纳的台灯

Also Published As

Publication number Publication date
CN102110559A (zh) 2011-06-29
CN102110559B (zh) 2013-03-13

Similar Documents

Publication Publication Date Title
WO2011143936A1 (zh) 气体放电灯生产自动排气台
CN1263698C (zh) 真空玻璃的制造方法及其装置
CN102091437B (zh) 一种高真空低温容器分子筛吸附装置及其灌装工艺
CN201185168Y (zh) 一种氙气灯的充排气装置
CN109396809A (zh) 气门嘴自动装配装置
WO2017050074A1 (zh) 一种多气囊防爆内胎
CN105964776B (zh) 一种用于岐管打孔机
CN201063329Y (zh) 多工位多夹具圆排气机
CN100580852C (zh) 一种大尺寸等离子显示屏封接排气方法及装置
CN211578692U (zh) 氙气灯充排气装置
CN203064803U (zh) 挡风玻璃搬运装置
CN204102849U (zh) 无极灯排气充氩机
CN103466967A (zh) 一种真空玻璃
CN218769395U (zh) 一种气体放电灯的充气机
CN101143474B (zh) 一种吊挂结构的硫化罐装置
CN218769411U (zh) 一种气体放电灯的充气机构
CN102403189A (zh) 一种照明灯具、灯泡及其加工方法
CN200993958Y (zh) 一种全自动灯泡生产机
CN212374394U (zh) 一种真空保险瓷管成型后产品转移装置
CN101826429B (zh) 节能灯无真空泵高真空排气系统及其排气方法
CN204534376U (zh) 一种并联驱动吸附固定式汽车乘员舱用灯
CN210939055U (zh) 一种应用于大型客车前挡风玻璃的可升降拆卸机构
CN102082052B (zh) 无极灯抽气机
CN212712143U (zh) 一种电力工程用绕线车
CN101840829B (zh) 高效节能冷阴极灯的制造方法及其装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11782853

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11782853

Country of ref document: EP

Kind code of ref document: A1