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Mercury alloy for low pressure gas discharge lamp

A gas discharge lamp and amalgam technology, applied in the field of indium lead amalgam, can solve problems such as inapplicability

Inactive Publication Date: 2008-01-09
FOSHAN COMWIN LIGHT & ELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Sn content in the amalgam is greater than 22%. It is an amalgam with an operating temperature range of 100-130°C. It is not suitable for low-pressure gas discharge lamps with higher operating temperature requirements.

Method used

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  • Mercury alloy for low pressure gas discharge lamp

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Indium-lead amalgam is made into pellets through melting drop by mass ratio (m / m) In: Pb: Hg=60: 38.5: 1.5, and is applied in the PAR lamp of 7-15w built-in compact fluorescent lamp, The light output and light efficiency are much higher than the typical bismuth-indium amalgam of Bi:In:Hg=65:30:5, and the consistency of the lamp is obviously better than that of the bismuth-indium amalgam.

Embodiment 2

[0017] Embodiment 2: Indium-lead amalgam according to mass ratio (m / m) In:Pb:Hg=30:68:2, is made into ball pellet through melting drop, can be applied in the PAR lamp of 5-13w built-in compact fluorescent lamp .

Embodiment 3

[0018] Embodiment 3: Indium-lead amalgam according to mass ratio (m / m) In:Pb:Hg=61:38:1, is made into ball pellet through melting drop, can be applied in the PAR lamp of 13-26w built-in compact fluorescent lamp .

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Abstract

An In-Pb-Hg alloy with ratio of (30-75): (21-68): (1-4) for low pressure air discharge lamp, contains some metals selected from Sn, Ag, Bi, and Zn, one of them or more at least of (0-22%). It is normally produced to control Hg vapor pressure at 1.0Pa so as to work efficiently at 110-190 deg.C, with better photoelectric parameters and energy saving.

Description

Technical field: [0001] The invention relates to a solid amalgam material, in particular to an indium-lead amalgam for a low-pressure gas discharge lamp. Background technique: [0002] High-power compact fluorescent lamps, built-in compact fluorescent lamps (compact fluorescent lamps with outer bulbs, PAR lamps with built-in compact fluorescent lamps), electrodeless lamps, ultraviolet lamps and other low-pressure gas discharge lamps have high current density and tube wall temperature. high. For tube current density ≥ 0.2A / cm 2 The low-pressure gas discharge lamp has the highest quantum efficiency when the ultraviolet radiation output with a wavelength of 253.7nm is near the mercury vapor pressure of 1.0Pa. This type of low-pressure gas discharge lamp has a high tube wall temperature, so it is necessary to use an amalgam that is controlled at a high temperature and stabilizes the mercury vapor pressure at around 1.0 Pa. Currently, bismuth-indium amalgam is commonly used. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C28/00C22C11/00C22C30/00H01J61/18
Inventor 何志明
Owner FOSHAN COMWIN LIGHT & ELECTRICITY