Electrode for cold cathode fluorescent tube

Abstract

The present invention provides a electrode for a cold-cathode fluorescent tube, which is composed of a tube body and a tube bottom with integrated molding of plastic property cylindrical metal billet, further having: forming a cylindrical tube body outer peripheral surface; the outer peripheral surface of the tube body being right-angle and forming a even bottom outer peripheral surface; forming a cylindrical tube body inner peripheral surface at the tube body outer peripheral surface; and forming a bottom inner peripheral surface with a rotator-shape concave surface at the central shaft to from the tube body inner peripheral surface gently and continuously. The thickness of the wall observing from the tube body to the tube bottom, the corner part between the tube body outer peripheral surface and the tube bottom outer peripheral surface, is bigger than that between the tube body outer peripheral surface and the tube body inner peripheral surface continuously.

Description

technical field [0001] The invention relates to an electrode used in a cold cathode fluorescent tube and formed into a cup shape through plastic processing. Background technique [0002] The cold cathode fluorescent tube is provided with a glass tube sealed with discharge gas, and a pair of electrode units are sealed at both ends of the glass tube. Wherein the structure of the electrode unit is composed of a conductive wire member that is properly tightly bonded to the glass tube and an electrode that is connected to the end of the wire member and can be accommodated inside the glass tube. If a voltage is applied between the electrodes of the cold cathode fluorescent tube, electrons will be released from one of the electrodes, and the released electrons will hit the mercury atoms contained in the discharge gas to emit ultraviolet rays. This ultraviolet light will be absorbed by the phosphor coated on the inner surface of the glass tube, and when the phosphor is excited, the...

AI Technical Summary

Problems solved by technology

However, these materials have low toughness and are not suitable for rolling or stamping. Therefore, similar to Patent Document 1, they must be formed by sintering, so that much labor and time are required for processing.

In addition, tungsten and molybdenum are rare metals, so the unit price of materials is high, which will increase the cost of finished products

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