发明授权
US5204580A Ring-shaped lamp device having bulb tiltable relative to base structure
失效
环形灯装置具有可相对于基座结构倾斜的灯泡
- 专利标题： Ring-shaped lamp device having bulb tiltable relative to base structure
- 专利标题（中）： 环形灯装置具有可相对于基座结构倾斜的灯泡
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申请号： US729853申请日： 1991-07-12
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公开(公告)号： US5204580A公开(公告)日： 1993-04-20
- 发明人: Masaharu Baba , Takao Mizukami , Masako Nakamura
- 申请人： Masaharu Baba , Takao Mizukami , Masako Nakamura
- 申请人地址： JPX Tokyo
- 专利权人： Toshiba Lighting & Technology Corporation
- 当前专利权人： Toshiba Lighting & Technology Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-235316 19880920; JPX63-238001 19880922
- 主分类号： H01J5/54
- IPC分类号： H01J5/54 ; H01J61/30 ; H01J61/52
摘要：
A lamp device includes a ring-shaped bulb, terminated at a prescribed annular length, each terminated portion of which is formed in a linear shape so as to make the bulb axis of one of the terminated portions coincide with that of the other terminated portion, and a base structure rotatably mounted around the opposite terminated portions of the bulb. Thus, the location of the bulb can be adjusted to a desirable position by the rotation of the bulb when the lamp device is attached to an external supporting device.
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