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CN100592453C 优异设计的电弧管的制造方法、低压汞灯和照明装置 失效 - 权利终止

优异设计的电弧管的制造方法、低压汞灯和照明装置
摘要：
一种电弧管，包括通过缠绕直玻璃管形成的电弧管体。直玻璃管的两个部分围绕虚拟圆锥表面螺旋缠绕。玻璃管的螺旋部分被夹在一对可移动固定板之间。玻璃管的螺旋部分被加热到等于或高于玻璃可变形的点且低于玻璃管的软化点的温度。通过可移动板在其自己的重量下向下运动而使螺旋部分平面化。
摘要（英）：

An arc tube is composed of an arc tube body that is formed by winding a straight glass tube. Two portions of the straight glass tube are spirally wound around an imaginary conical surface. The spiraled portions of the glass tube are sandwiched between a pair of movable fixed plates. The spiraled portions of the glass tube are heated to a temperature equal to or higher than a point at which the glass tube is deformable and yet lower than the softening point of the glass tube. The spiraled portions are flattened by the movable plate moving downwardly under its own weight.

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