Lamp tube of LED straight-tube lamp and lamp cap connecting method

Abstract

The invention discloses a lamp tube of an LED straight-tube lamp and a lamp cap connecting method. The method comprises the following steps that hot melt adhesive is coated on the inner surface of a lamp cap; the lamp cap sleeves the end part of the lamp tube; and after the hot melt adhesive is heated to expand through external heating equipment, a space between the inner surface of the lamp cap and the outer surface of the end part of the lamp tube is filled with the hot melt adhesive.

Description

[0001] This application claims the priority of the Chinese patent application submitted to China Patent Office on September 28, 2014, with application number 201410507660.9 and title of invention "A LED Fluorescent Lamp", the entire content of which is incorporated in this application by reference. [0002] This application claims the priority of the Chinese patent application with the application number 201410508899.8 and the title of the invention "a method for solidifying welding paste powder" submitted to the China Patent Office on September 28, 2014, the entire contents of which are incorporated in this application by reference. [0003] This application claims the priority of the Chinese patent application with the application number 201410623355.6 and the title of the invention "an LED fluorescent lamp" submitted to the China Patent Office on November 06, 2014, the entire contents of which are incorporated in this application by reference. [0004] This application claims ...

AI Technical Summary

Problems solved by technology

[0017] First, the circuit board is generally a rigid board. When the lamp tube is broken, especially when it is partially broken, the entire LED straight tube lamp is still in a straight tube state. Users will mistakenly think that the lamp tube can still be used, so they can go Installation may easily lead to leakage and electric shock accidents

[0018] Second, in the existing LED straight tube lamps, metal wires are generally used to achieve electrical connection between the rigid circuit board and the lamp cap through wire bonding. During the manufacture, transportation and use of LED straight tube lamps, the metal wires It is easy to be damaged or even broken due to moving, making the LED straight tube lamp unusable

[0019] Third, in the existing LED straight tube lamps, hot melt adhesive or silica gel is usually used for bonding between the lamp cap and the lamp tube. Glue will affect the appearance and cause shading problems; if you want to remove excess glue, you need to use a lot of manual wiping in the manufacturing process, causing production obstacles and low efficiency

In addition, the poor heat dissipation of the power supply components in the lamp cap will easily lead to a high temperature environment in the lamp cap, thereby reducing the service life of the hot melt adhesive and reducing the adhesion between the lamp tube and the lamp cap, resulting in a decrease in the reliability of the LED straight tube lamp

[0020] Fourth, the lamp tube in the prior art is generally a uniform cylinder, and the lamp cap is set outside the lamp tube and bonded with the lamp tube by glue. Therefore, the outer diameter of the lamp cap is larger than that of the lamp tube

For this part, the U.S. patent application with the publication number US20100103673A discloses a LED straight tube lamp, the lamp tube is a glass lamp tube, and the lamp head is inserted into the glass lamp tube, so that the two ends of the glass lamp tube bear internal stress And it is easier to break when subjected to external force at both ends

This will lead to product defects and quality problems

[0021] Fifth, in the existing LED straight tube lamps, visual graininess often occurs

However, the setting of the diffuser tube adds an interface to the light propagation path, which will increase the probability of total reflection of light during propagation, and reduce the light output efficiency

In addition, the optical absorption of the diffusion tube will lead to a decrease in the output efficiency of light

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