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Method for fabricating superfine tube diameter fluorescent lamp tube by bending tube firstly and then coating powder

A technology for fluorescent tubes and manufacturing methods, which is applied in the field of electric light source optics, can solve problems such as unsatisfactory effects of powder coating technology, and achieve the effects of low cost, labor saving, and improved pass rate

Inactive Publication Date: 2007-09-19
陈枕流
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for making ultra-fine-diameter fluorescent tubes by first bending and then powder-coating. The technical problem that the effect of powder coating technology for ultra-fine lamp tubes with a tube diameter less than φ7mm is not satisfactory

Method used

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Effect test

Embodiment Construction

[0014] In the present invention, a method for manufacturing ultra-fine-diameter fluorescent lamp tubes by first bending them and then coating them with powder, selects a lamp tube with a tube diameter of 3.5 mm, and in the first step, first uses a tube bender to bend the tube to form a spiral lamp tube. The outer diameter is φ27, 4.25 circles, washed and dried. The second step is to pour fluorescent powder slurry into the lamp tube, and control the temperature of the fluorescent powder slurry between 10 degrees Celsius and 15 degrees Celsius, and then continuously feed it into the lamp tube coated with powder slurry in one direction at one end Hot air, the temperature of the hot air is between 100 degrees Celsius and 130 degrees Celsius, and then the lamp tube is subjected to subsequent treatment, including electrode installation, sealing, exhaust, high-frequency baking, aging, and matching electronic transformers. The test parameters are as follows:

[0015] Input voltage: 2...

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PUM

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Abstract

A method for making an ultra-fine diameter fluorescent tube in the manner of bending first and then powdering includes a step of bending the tube and a step of powdering phosphor on the inner wall of the tube. The diameter of the tube is less than 7 mm. The step of bending the tube is executed first, and then the step of powdering phosphor on the inner wall of the tube is carried out. In the step of powdering phosphor on the inner wall of the tube, phosphor plasma is filled into the tube first, and the temperature of the phosphor plasma is limited between 10 and 15 DEG C, and then hot wind whose temperature is controlled between 100 and 130 DEG C is input into the tube having been coated with phosphor. The invention can effectively improve the qualified rate, and reduce the production cost and improve the quality of the whole tube.

Description

technical field [0001] The invention relates to the field of electric light source optics, in particular to lamp tubes, and in particular to a method for manufacturing fluorescent lamp tubes, in particular to a method for manufacturing ultra-fine-diameter fluorescent lamp tubes by first bending the tubes and then coating them with powder. Background technique [0002] In the prior art, the lamp tube of the low-pressure gas discharge fluorescent lamp needs to be powder-coated during the processing. For lamp tubes with a diameter greater than or equal to 7mm, the method of bending the tube first and then coating powder is adopted, but for ultra-fine fluorescent tubes with a diameter less than 7mm, after the powder slurry is poured into or sucked into the glass tube, due to the powder slurry has a certain Viscosity, and the glass tube bends back, the slurry cannot flow naturally, and at the same time, the air resistance increases due to the small diameter of the tube, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/22H01J9/00
Inventor 陈枕流
Owner 陈枕流
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