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Glass composition for lamp and lamp using same

A technology of glass composition and glass for lamps, which can be applied to the components of gas discharge lamps, discharge lamps, gas discharge lamps, etc., which can solve the problems of reduced luminous efficiency and shortened life of lamps, and achieve excellent processability and diffusion capacity. little effect

Inactive Publication Date: 2007-05-16
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since the Hg in the arc tube is consumed when the amalgam is generated, the luminous efficiency of the lamp decreases, and the life of the lamp becomes short.

Method used

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  • Glass composition for lamp and lamp using same
  • Glass composition for lamp and lamp using same
  • Glass composition for lamp and lamp using same

Examples

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Effect test

Embodiment Construction

[0040] A glass composition and a lamp according to an embodiment of the present invention will be described with reference to the drawings.

[0041] (explanation of the light)

[0042] Fig. 1 is a side view showing a lamp according to one embodiment of the present invention. As shown in FIG. 1 , the lamp according to the embodiment of the present invention is a so-called compact fluorescent lamp 1 and has an arc tube 2 and a base 3 . The luminous tube 2 has a glass envelope 5 formed by bridging a plurality of glass tubes 4 bent into a U shape, and the glass envelope 5 is formed of the glass composition of the present invention.

[0043] It should be noted that the lamp of the present invention is not limited to compact fluorescent lamps, and may be various types of fluorescent lamps such as straight tube fluorescent lamps, circular fluorescent lamps, and bulb-shaped fluorescent lamps, or discharge lamps. In addition, the structure of the lamp or the shape, size, etc. of each...

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Abstract

Disclosed is a glass composition for lamps mainly containing SiO2 (silicon dioxide) and further containing 12-17 wt% of Na2O (sodium oxide), 2.5-4 wt% of MgO (magnesium oxide) and 5.3-7.3 wt% of CaO (calcium oxide) with MgO and CaO being 8-11 wt% in total. With this constitution, the glass composition can be obtained at low cost while having excellent strength and workability. Furthermore, this glass composition does not erode a melting furnace and only a small amount of alkali is dissolved therefrom.

Description

technical field [0001] The present invention relates to a lamp composition and a lamp using the same. Background technique [0002] A light emitting tube of a fluorescent lamp uses glass with excellent workability that is easy to bend, connect, or seal. In order to improve the workability of the glass, the Li 2 O (lithium oxide), Na 2 O (sodium oxide) and K 2 The content of alkali metal oxides such as O (potassium oxide) is sufficient. In particular, it is possible to increase the content of Na, which is easy to adjust and inexpensive. 2 The content of O, but when it is glass used for luminous tubes, for the following reasons, Na 2 It is not easy to increase the O content. [0003] That is, if increasing Na 2 O content, the amount of Na (sodium) in the glass increases. Na is a metal that is particularly easy to dissolve from glass among alkali metals. If the dissolved Na reacts with Hg (mercury) in the luminous tube to form amalgam, the amalgam will adhere to the inne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/078C03C3/091H01J61/30H01J61/32
CPCH01J61/302C03C3/091
Inventor 阿部淳子安宅知子伊藤雅信仁熊泰郎泽亮介渡边浩也
Owner PANASONIC CORP
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