Method for mfg of net screen of electrode free illumination device

Abstract

A processing method for a mesh of no-electrode illuminating device includes a mesh forming step making a mesh with net structure, a first metal coating step coating a first metal substance on the mesh surface, a vacuum heat treatment step, a second metal coating step coating a second metal substance on the surface, a light catalysis coating step coating a light catalysis substance on the mesh surface among which, the first metal substance is Ni, and second is Ag and the light catalysis substance is an oxide containing TiO.

Description

technical field [0001] The invention relates to a lighting device, in particular to a method for manufacturing a mesh screen of an electrodeless lighting device using microwaves. Background technique [0002] The electrodeless lighting device is a device that loads microwaves on the electrodeless bulb to obtain visible light or ultraviolet light. Compared with ordinary incandescent lamps and fluorescent lamps, it has the characteristics of long bulb life and good lighting effects. [0003] figure 1 It is a longitudinal sectional view of an ordinary electrodeless lighting device. [0004] The electrodeless lighting device consists of a magnetron (1) capable of generating microwaves, a waveguide (3) that conducts microwaves from the magnetron (1), and a waveguide (3) that transmits microwave energy through the waveguide (3). The light bulb (5) that emits light when the luminescent substance in the lower inner seal is plasmaized, covers the front of the waveguide (3) and the ...

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Problems solved by technology

[0020] But the mesh screen (20) that utilizes the manufacturing method of the mesh screen of the prior art as mentioned above to make out owing to can remain various organic matter or acidic substance when the surface is plated with metal, therefore exceeds 1000 ℃ high temperature in bulb (5) Under certain conditions, the residues in the coating will evaporate and cause deformation of the metal coating

[0021] In addition, the mesh screen (20) in the high temperature environment will also have the phenomenon of coating separation under the action of thermal stress.

[0022] Therefore utilize the mesh screen that existing manufacturing method as mentioned above makes owing to metal plating deformation or the phenomenon that plating layer separates can appear, thereby make the mesh screen (20) in the air-cooling structure produce discoloration or oxidation phenomenon when contacting with external air. Acceleration, therefore will bring the consequence that the stability of the mesh screen (20) is reduced and the service life is significantly shortened

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