基本信息:
- 专利标题： 双螺旋形玻璃管的制造方法、荧光灯用发光管及荧光灯
- 专利标题（英）：Process for producing double helical glass tube, light-emitting tube for fluorescent lamp, and fluorescent lamp
- 申请号：CN200680010095.9 申请日：2006-03-28
- 公开(公告)号：CN101151698B 公开(公告)日：2010-11-17
- 发明人： 板谷贤二 , 中野宪次
- 申请人： 松下电器产业株式会社
- 申请人地址： 日本大阪府
- 专利权人： 松下电器产业株式会社
- 当前专利权人： 松下电器产业株式会社
- 当前专利权人地址： 日本大阪府
- 代理机构： 中国专利代理(香港)有限公司
- 代理人： 温大鹏
- 优先权： 106022/2005 2005.04.01 JP
- 国际申请： PCT/JP2006/306216 2006.03.28
- 国际公布： WO2006/106645 JA 2006.10.12
- 进入国家日期： 2007-09-27
- 主分类号： H01J9/24
- IPC分类号： H01J9/24 ; H01J61/33 ; C03B23/045 ; C03B23/07
A process for producing a double helical glass tube having a projecting part. A double helical glass tube with a projecting part produced by the process is less apt to break at the projecting part. The process comprises: a step in which a glass tube (23) formed into a double helical shape is made thicker in that part (32) in a central part (13) where a projecting part is to be formed than in the other parts of the glass tube; a step in which the part where a projecting part is to be formed is locally heated to soften it; and a step in which nitrogen gas (27) is blown into the glass tube through an end part of the glass tube to expand the part where a projecting part is to be formed and thereby form a projecting part (14). Since the part where a projecting part is to be formed has been made thick beforehand, that part can retain sufficient strength even after it expands and becomes thin in projection formation.
公开/授权文献:
- CN101151698A 双螺旋形玻璃管的制造方法、荧光灯用发光管及荧光灯 公开/授权日：2008-03-26
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01J | 放电管或放电灯 |
| ------H01J9/00 | 专用于制造放电管、放电灯及其部件的设备和方法；从放电管或灯回收材料 |
| --------H01J9/24 | .管壳、引入线、管座的连接或制造 |