Bi-Pb-Ti-Hg alloy for low pressure Hg discharge lamp
A discharge lamp and low-pressure technology, applied in the field of bismuth-lead-tin amalgam, can solve the problems of low luminous efficiency, reduced radiation efficiency, large dispersion of optoelectronic parameters, etc., and achieve the effects of high luminous efficiency and improved stability
Inactive Publication Date: 2010-11-03
FOSHAN COMWIN LIGHT & ELECTRICITY
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Problems solved by technology
When there is an inflection point where the mercury vapor pressure drops in the characteristic curve of the mercury vapor pressure of the amalgam as a function of temperature, the mercury vapor pressure near the inflection point temperature is low. Due to the discreteness of some lamps, when the amalgam is in this temperature range, the 253.7nm ultraviolet rays The radiation efficiency is reduced and the luminous efficiency is low, which leads to large dispersion of the photoelectric parameters of the lamp
Method used
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Embodiment 1
[0015] Example 1: Bismuth-lead-tin amalgam is made into pellets according to the mass ratio (m / m): Bi:Pb:Sn:Hg=30:40:25:5, and is applied to pipe diameter φ10mm, power 5- Among the 11w compact fluorescent lamps with outer bulbs, the average luminous efficacy is high, and the light output stability and consistency of the lamp are good.
Embodiment 2
[0016] Example 2: Bismuth-lead-tin amalgam is made into pellets by mass ratio (m / m): Bi:Pb:Sn:Hg=45:22:30:3, and is applied to pipe diameter φ10mm, power 7- Among the 13w compact fluorescent lamps with outer bulbs, the average luminous efficacy is high, and the light output stability and consistency of the lamp are good.
Embodiment 3
[0017] Example 3: Bismuth-lead-tin amalgam is made into pellets by mass ratio (m / m): Bi:Pb:Sn:Hg=32:27:40:1, which can be applied to pipe diameter φ10mm and power 9 -15w compact fluorescent lamp with outer bulb.
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The invention discloses an amalgam for a low-pressure gas discharge lamp, which is an alloy containing Bi, Pb, Sn and Hg, wherein the mass ratio of the Bi to the Pb to the Sn to the Hg is 30- 45 to22-40 to 25-40 to 1-8). Through the amalgam prepared by a routine manufacturing method, mercury vapor of a lamp in a working temperature area can be stably controlled approximately 1.5 Pa; the low-pressure mercury discharge lamp with small caliber has high luminous efficiency; meanwhile, liquid phase temperature of the alloy is improved and fluidity of the amalgam at working temperature is reduced.Compared with the prior art, the lamp has the advantages of high light efficiency, and good stability and consistency.
Description
technical field [0001] The invention relates to the technical field of solid amalgam materials, in particular to a bismuth-lead-tin amalgam for low-pressure mercury discharge lamps. Background technique [0002] In the low-pressure mercury discharge tube, mercury atoms are excited to produce 253.7nm ultraviolet radiation. When the 253.7nm ultraviolet radiation emitted by mercury atoms irradiates adjacent ground-state mercury atoms, resonance absorption will occur, and the mercury atoms that generate resonance absorption may interact with other electrons, The atoms collide and cannot re-radiate the 253.7nm UV photon. When the mercury atomic concentration is low, as the mercury atomic concentration increases, the 253.7nm ultraviolet radiation increases. When the mercury atomic concentration is high, the 253.7nm ultraviolet conversion efficiency decreases, and the luminous efficiency decreases. There is an optimum mercury vapor pressure (in P 0 Indicates), when the mercury v...
Claims
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IPC IPC(8): C22C30/04
Inventor 何志明
Owner FOSHAN COMWIN LIGHT & ELECTRICITY