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Method for mfg. high-pressure discharge lamp, high-pressure discharge lamp and lamp assembly

A technology of high-pressure discharge lamps and manufacturing methods, which is applied to the manufacture of discharge tubes/lamps, components of gas discharge lamps, discharge lamps, etc., and can solve the problem of unavailability, increase of lamp current, and increase of lamp voltage to a necessary level First-class problems, to achieve the effect of suppressing composition changes, effective compressive strength, and high manufacturing

Inactive Publication Date: 2004-07-21
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because, if the amount of mercury enclosed is insufficient relative to the power of the lamp, the voltage of the lamp cannot be increased to the necessary level, which will cause the current of the lamp to increase. As a result, the electrode evaporates in advance, resulting in less than practical lights
In other words, from the viewpoint of realizing a high-output lamp, it is sufficient to increase the power of the lamp and manufacture a short-arc lamp with a shorter electrode pitch than conventional lamps. However, actually manufacturing a high-output, For high-power lamps, it is necessary to increase the compressive strength and increase the amount of mercury enclosed
Under today's technology, there is no practical high-pressure discharge lamp with extremely high compressive strength (for example, above 30MPa)

Method used

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  • Method for mfg. high-pressure discharge lamp, high-pressure discharge lamp and lamp assembly
  • Method for mfg. high-pressure discharge lamp, high-pressure discharge lamp and lamp assembly
  • Method for mfg. high-pressure discharge lamp, high-pressure discharge lamp and lamp assembly

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Effect test

Embodiment approach 1

[0089] In the high-pressure discharge lamp according to the embodiment of the present invention, mercury bromide (HgBr 2 ), which is the same as figure 1 The high pressure discharge lamps shown are different, figure 1 If the high-pressure discharge lamp shown is to be filled with a halogen precursor (for example, CH 2 Br 2 , HBr) or a halogen element (for example, Br), the type is not particularly limited, or depending on the situation, the halogen element may not be enclosed. Another point, since the structure is basically the same as figure 1 are the same as shown, so refer to figure 1 A high-pressure discharge lamp according to an embodiment of the present invention will be described. In addition, for the convenience of description, the symbol of the high-pressure discharge lamp of this embodiment is designated as "100", and the number is omitted or simplified. figure 1 Represents the structure and repeated parts.

[0090] The lamp 100 of this embodiment is a do...

Embodiment approach 2

[0137] refer to Figure 7 , the high-pressure discharge lamp according to Embodiment 2 of the present invention will be described. Figure 7 The structure of the high-pressure discharge lamp 200 of this embodiment is shown schematically. Mercury bromide (HgBr 2 ) as the halogen element precursor is the same as the high-pressure discharge lamp of Embodiment 1 above. It should be mentioned that in this embodiment and the above-mentioned Embodiment 1, mercury bromide (HgBr 2 ) are omitted in the figure.

[0138] Such as Figure 7 As shown, in order to further improve the withstand voltage strength of the lamp 100 in this embodiment, it is preferable to Figure 7 Like the lamp 200 shown, a metal film (for example, a Pt film) 30 is formed on at least a part of the surface of the part of the electrode rod 3 buried in the sealing part 2 . It should be noted that the metal film 30 may be formed of at least one metal selected from the element group consisting of Pt, Ir, Rh, Ru, a...

other Embodiment approach

[0154] In the above-mentioned embodiments, a mercury lamp using mercury as a light-emitting substance has been described as an example of a high-pressure discharge lamp. The present invention is also applicable to any high-pressure discharge lamp having a structure in which the airtightness of the arc tube is maintained by the sealing portion. For example, the present invention is also applicable to a metal halide lamp or a high-pressure discharge lamp such as xenon that seals a metal halide. Because for metal halide lamps, etc., the higher the withstand voltage, the better. In other words, it is because by preventing air leakage and preventing cracks, a lamp with high reliability and long life can be obtained. When the structure described in the above-mentioned embodiment is applied to a metal halide lamp in which not only mercury but also metal halide is sealed, the following effects can be obtained. In other words, by providing the second glass part 7, the adhesion of the...

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Abstract

Provided is a method of surely manufacturing a high pressure discharge lamp having high pressure-resistant strength. The high pressure discharge lamp 100 comprises an arc tube 1 in which a luminescent material is filled and a sealing part 2 for holding airtightness of the arc tube 1, and the sealing part 2 has a first glass section 8 extending from the arc tube 1 and a second glass section 7 provided at least at a part inside the first glass section 8, and the sealing part 2 has a portion (20) on which compressive stress is impressed, and mercury bromide (HgBr2) is filled in the arc tube 1.

Description

technical field [0001] The invention relates to a manufacturing method of a high-pressure discharge lamp, a high-pressure discharge lamp and a lamp assembly. In particular, it relates to a method of making high pressure discharge lamps for general lighting, for use in projectors in combination with reflectors, and for automobile headlights. Background technique [0002] In recent years, image projection devices such as liquid crystal projectors and DMD projectors have been widely used as systems for realizing large-screen images, and high-brightness high-pressure discharge lamps are generally used in such image projection devices. The structure of the existing high pressure discharge lamp 1000 is schematically shown in Figure 12 middle. For example, it is disclosed in Japanese patent publication No. 2-148561 Figure 12 The lamp 1000 shown is a so-called ultra-high pressure mercury lamp. [0003] The lamp 1000 includes a bulb 101 made of quartz glass, and a pair of seals 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/32H01J9/395H01J61/20H01J61/36H01J61/82H01K1/38H01K3/20
CPCH01K3/20H01J61/368H01J61/822H01J61/20H01J9/395H01K1/38H01J9/323
Inventor 堀内诚高桥清一番濑刚畑冈真一郎关智行茑谷恭
Owner PANASONIC CORP
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