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Fluorescent lamp and method of manufacturing the same

A fluorescent lamp and light technology, applied in the manufacture of discharge tubes/lamps, cold cathodes, electrode systems, etc., can solve problems such as environmental damage, and achieve the effects of reduced mercury consumption, good resistance, and reduced blackening

Inactive Publication Date: 2008-03-26
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in damage to the environment if improperly disposed of at end of life

Method used

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  • Fluorescent lamp and method of manufacturing the same
  • Fluorescent lamp and method of manufacturing the same
  • Fluorescent lamp and method of manufacturing the same

Examples

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Embodiment Construction

[0025]Figure 1 shows a compact fluorescent lamp, which includes a low pressure mercury vapor discharge lamp. The low-pressure mercury vapor discharge lamp is provided with a radiation-permeable discharge vessel 10 which encloses a discharge space 11 in a gas-tight manner, which has a volume of approximately 10 cubic centimeters. The discharge vessel 10 is a glass tube, at least circular in cross-section, with an effective internal diameter D of approximately 10 mm. The tube is bent into a so-called hook shape, which in this embodiment has a number of straight sections, two of which 31, 33 are shown in Figure 1A. The discharge vessel also includes a plurality of arcuate portions, two of which 32, 34 are shown in Figure 1A. The inner wall 12 of the discharge vessel 10 is provided with a translucent layer 16 and a luminescent layer 17 according to the invention. In alternative embodiments, the light emitting layer may be omitted. The discharge vessel 10 is supported by a housi...

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Abstract

A low-pressure mercury vapor discharge lamp is provided with a light-transmitting discharge vessel (10), enclosing, in a gastight manner, a discharge space (11) provided with a filling of mercury and a rare gas. The discharge vessel (10) comprises means (41A) for maintaining a discharge in the discharge space (11). At least a portion of an inner wall of the discharge vessel (10) is provided with a translucent layer (16), which according to the invention has a thickness in the range from 1 to 50 (m and comprises an alkaline earth borate. Starting materials for the translucent layer (16) are nano-particles of calcium strontium, and / or barium borate, enabling the production of such thick translucent layers. Preferably, the discharge vessel (10) is made from a sodium-rich or a soda lime glass with a glass composition comprising the following essential constituents: 60 to 80% SiO2 and 10 to 20% Na2O by weight.

Description

technical field [0001] The invention relates to a low-pressure mercury vapor discharge lamp, which comprises: a light-transmissive discharge tube, the discharge tube encloses a discharge space in an airtight manner, and the space is filled with mercury and a rare gas; the discharge tube is provided so that the The mechanism for maintaining the discharge in the discharge space; at least a part of the inner wall of the discharge tube is provided with a semi-transparent layer. [0002] The invention also relates to a compact fluorescent lamp. [0003] The invention additionally relates to a method for producing a fluorescent lamp. Background technique [0004] For mercury vapor discharge lamps, mercury constitutes the main component for efficient generation of ultraviolet light. A luminescent layer comprising a luminescent material (e.g., phosphor) placed on the inner wall of the luminous tube to convert ultraviolet light into other wavelengths, such as UV-B and UV-A, for tan...

Claims

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Application Information

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IPC IPC(8): H01J61/35H01J61/26H01J61/72H01J61/30H01J61/32
CPCH01J9/34H01J61/35H01J61/26H01J61/327H01J61/72
Inventor I·J·M·斯尼克斯-亨德里克H·A·M·范哈W·C·柯尔
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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