Trace mercury filling method in manufacture of fluorescent lamp

Abstract

The invention discloses a trace mercury filling method in manufacture of a fluorescent lamp. The trace mercury filling method comprises the following steps of: forming a lamp tube of an energy-saving fluorescent lamp to be filled with mercury according to a manufacture process of the energy-saving fluorescent lamp; measuring lamp tube related parameters of the energy-saving fluorescent lamp formed in a step of forming the lamp tube; calculating an optimal mercury filling amount according to the lamp tube related parameters measured in a measurement step; comparing the optimal mercury filling amount calculated in a calculation step with a predetermined expected mercury filling amount; when the optimal mercury filling amount is not more than the predetermined expected mercury filling amount, filling the mercury into the lamp tube of the energy-saving fluorescent lamp to be filled with the mercury by a value which is not less than the optimal mercury filling amount but not more than the predetermined expected mercury filling amount; and when the optimal mercury filling amount is more than the predetermined expected mercury filling amount, not filling the mercury into the lamp tube of the energy-saving fluorescent lamp to be filled with the mercury, returning to the step of forming the lamp tube, and reprocessing the lamp tube of the energy-saving fluorescent lamp to be filled with the mercury.

Description

technical field [0001] The invention relates to a method for injecting a trace amount of mercury in the manufacturing process of fluorescent lamps. In particular, it relates to a method for realizing optimal control of the injection amount of mercury according to product parameters in the manufacturing process of fluorescent energy-saving lamps. Background technique [0002] Energy-saving fluorescent lamps are low-pressure mercury discharge lamps. Energy-saving fluorescent lamps excite and ionize mercury atoms to generate 253.7nm ultraviolet rays in the process of emitting light, so that the fluorescent powder is re-excited by ultraviolet photons to emit visible light. Therefore, in energy-saving lamps, in the process of efficiently converting electrical energy into light energy, the role of mercury materials cannot be replaced by other materials. [0003] However, we all know the fact that mercury materials are harmful to the environment, animals including humans and almo...

AI Technical Summary

Problems solved by technology

[0010] The first is the immediate problem: in order to ensure normal excitation and ionization of mercury atoms after the injected mercury is consumed, the amount of quantitative mercury chosen must be high

In this way, the remaining mercury materials exceeding actual needs will inevitably cause environmental pollution in the future

[0011] The second is an indirect problem: due to the excessive injection of quantitative mercury, it objectively "covers" the possible quality problems of the energy-saving fluorescent lamps produced, or it is impossible to consider the quality of the energy-saving fluorescent lamps produced

Although the remaining mercury can make the fluorescent lamps produced can emit light normally, these concealed defects will greatly shorten their lifespan

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