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Noble gas fluorescent lamp

A rare gas, fluorescent lamp technology, applied in the direction of light source, discharge lamp, electrical components, etc., can solve the problem of shortening the high illumination of the original surface of the lamp

Inactive Publication Date: 2009-09-30
USHIO DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the upper part of the lamp holder has the thickness of both the inner lamp holder and the outer lamp holder, it cannot sufficiently respond to the requirement of shortening the distance between the light-emitting surface of the lamp and the original surface to achieve high illumination on the original surface

Method used

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  • Noble gas fluorescent lamp
  • Noble gas fluorescent lamp
  • Noble gas fluorescent lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Specific examples will be described below. Structure and structure of rare gas fluorescent lamps other than lamp holders figure 2 and image 3 The structure shown is the same. A mixed gas of xenon gas and neon gas is sealed inside the barium glass case at a fully enclosed pressure of 36 kPa, and a phosphor layer is formed on the inner surface of the glass case except for the slit opening 9 along almost the entire length of the tube axis direction. A pair of electrodes 2, 2' are arranged opposite to each other along the tube axis direction on the outer surface of the glass envelope 1 in the shape of a straight tube. The electrodes 2 and 2' are generally electrodes pasted with metal aluminum foil or formed with conductive silver paste by screen printing.

[0040] If an example of the size of a rare gas fluorescent lamp is given, the outer diameter of the tube is φ9.8mm, the wall thickness is 0.5mm, and the total length is 265mm. Composed of phosphors. The inner surfa...

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PUM

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Abstract

The present invention provides a noble gas fluorescent lamp, capable of shortening distance between luminous surface and manuscript surface than prior art to realize high illumination intensity of manuscript surface. A lamp base comprises a approximately cylinder shaped inner lamp base mounted on an end of a glass housing and an outer lamp base containing the inner base inside; the outer base has a flat plate section and an inner lamp base containing section defining an approximately cylinder shaped cavity for containing the lamp base; the outer lamp base forms a gap section reaching the inner base containing section bottom or near bottom on top periphery surface along lamp axis direction linearly far away from the flat plate; when the inner base is contained into the outer base, shortest distance from the flat plate section to top periphery surface of the inner base is equal or longer than shortest distance from the flat plate to periphery surface edge of the gap section.

Description

technical field [0001] The present invention relates to a rare gas fluorescent lamp used for illuminating manuscripts used in information equipment such as facsimile machines, copiers, and image readers. Background technique [0002] As a discharge lamp used as a reading light source for information equipment such as copiers, MFPs (Multi Function Peripherals), and image scanners, a pair of external electrodes arranged on the outside of a glass case and a glass case are known. A rare gas fluorescent lamp in which a rare gas such as xenon is sealed inside. Such a rare gas fluorescent lamp in which the external electrodes are arranged on the outside of the glass envelope is described in Patent Document 1 or Patent Document 2. The power supply lead is connected to the external electrode at one end of the glass envelope and led out through the lamp socket. The rare gas fluorescent lamp has a structure in which a socket is attached to an end of a glass envelope and held by the so...

Claims

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Application Information

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IPC IPC(8): H01J65/00H01J5/48F21V19/00F21V23/06F21Y103/00
Inventor 多田元典
Owner USHIO DENKI KK
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