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Method for mfg. fluorescent tubes

A technology for fluorescent tubes and manufacturing methods, which is applied in the direction of discharge tube/lamp manufacturing, tube/lamp screen manufacturing, cold cathode manufacturing, etc., and can solve the problem that the powder coating process cannot be completed with high quality, the powder slurry cannot be evenly coated, and the Realize problems such as powder coating of lamp tubes, and achieve the effect of satisfying the structure, good color temperature and improving light efficiency

Inactive Publication Date: 2007-01-31
四川雪莱特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the tube diameter tends to become smaller and the number of helical turns increases, such as a fluorescent tube with a tube diameter of φ7mm and more than 4 helixes or a tube diameter of φ9mm and more than 5 helixes, use the above method to apply powder (tricolor rare earth phosphor), its coating The powder process will not be completed with high quality. Due to the small diameter and many spirals, the length of the entire lamp tube is longer, and the powder slurry itself has a certain concentration and has a certain adsorption force. When applying powder, the powder slurry cannot Evenly coated on the inner wall of the lamp tube, so according to the conventional powder coating method, after the powder slurry is sucked into the spiral exposed tube, under its own gravity, it cannot flow out from the nozzle of the spiral exposed tube or cannot flow out smoothly
It can be seen that the powder coating of this kind of lamp tube cannot be realized according to the conventional production method. Therefore, the powder coating has become the bottleneck of the whole process in the production of small-diameter, multi-helix spiral tubes.

Method used

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  • Method for mfg. fluorescent tubes
  • Method for mfg. fluorescent tubes
  • Method for mfg. fluorescent tubes

Examples

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Embodiment 1

[0018] Present embodiment adopts the fluorescent lamp tube of diameter of φ7mm, 4 spirals, as figure 1 As shown, a glass tube 2 is connected to the top of the spiral fluorescent tube 1, the diameter of the glass tube 2 is 3.5 mm, and the inside of the glass tube 2 communicates with the inside of the fluorescent tube 1. When applying powder, the fluorescent powder slurry is sucked from a nozzle of the spiral fluorescent tube 1. At this time, press the top of the connected glass tube 2 with your fingers to make it sealed until the process of sucking the slurry is completed. Remove the finger that seals the top of the exhaust pipe, and the phosphor powder slurry can smoothly flow out from the nozzle of the spiral fluorescent tube 1 under its own gravity and the atmospheric pressure on it, thereby completing the powder coating process.

[0019] After the exhaust process, when the mercury is roasted, the top of the fluorescent tube 1 can retain a top bubble 3 with a height of 2.5mm...

Embodiment 2

[0021] Present embodiment adopts the fluorescent lamp tube of diameter of φ 7mm, 5 spirals, and the diameter of glass tube 2 is 1.5mm, and the method of powder coating is the same as that of embodiment 1, after the exhaust process, when roasting mercury and burning the tip, the top of fluorescent lamp tube 1 A top bubble 3 with a height of 3 mm can be reserved (see figure 2 , 3 ), the top bubble 3 can be used as a cold end of the spiral lamp tube, which is beneficial to the improvement of light efficiency.

Embodiment 3

[0023] Present embodiment adopts the fluorescent tube of φ 9mm tube diameter, more than 5 helixes, and the tube diameter of glass tube 2 is 5.5mm, and the powder coating method is the same as embodiment 1, and after the exhaust process, when roasting mercury, the fluorescent tube 1 A top bubble 3 with a height of 3mm can be reserved at the top (see figure 2 , 3 ), this bubble 3 can be used as a cold end of the spiral lamp tube, which is beneficial to the improvement of light efficiency.

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Abstract

The invention discloses fluorescent tube manufacturing method. It includes dusting, baking tube, sealing, exhausting, burned tip, and tact working procedure. Its feature is that the top of the fluorescent tube is connected with glass tube while dusting; the fluorescent powder slurry is absorbed from one nozzle; another one is sealed but desterilized after finishing absorbing; the fluorescent powder slurry will flow out by self gravity and atmospheric pressure; the glass tube burned tip will form cold end after exhausting. The invention has the advantages of compact structure, high light effect, and better color temperature.

Description

technical field [0001] The invention relates to a method for manufacturing a fluorescent lamp tube, in particular to a method for manufacturing a thin-diameter multi-spiral fluorescent lamp tube. technical background [0002] Energy-saving lamps have received more and more attention due to their high luminous efficiency, long life, and remarkable energy-saving effect. Among them, multi-spiral fluorescent lamps with thin tube diameters such as φ9mm are popular with consumers because of their more compact structure and beautiful appearance. The φ7mm tube diameter fluorescent lamp has its larger potential market. [0003] The manufacturing process of fluorescent tubes includes powder coating, tube baking, sealing, exhaust, burning tip, aging and other processes, while the conventional spiral lamp powder coating method is to intrude one end of the lamp tube into the powder slurry to absorb powder, and the other end is connected to a leather tube to absorb powder. Air, through t...

Claims

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Application Information

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IPC IPC(8): H01J9/00H01J9/22
Inventor 康云飞李汉茂柴国生
Owner 四川雪莱特光电科技有限公司
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