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Arc discharging lamp with head and light source unit

A technology for discharge lamps and lamp caps, which is applied in the direction of discharge lamps, electric light sources, gas discharge lamp parts, etc., which can solve the problems of complex manufacturing process, high productivity, and difficulty in obtaining, so as to achieve high productivity, eliminate individual differences, and reduce complexity. degree of effect

Inactive Publication Date: 2005-02-02
USHIO DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Therefore, the current situation is that the manufacturing process of the above-mentioned light source unit 70 is very complicated, and it is difficult to obtain high productivity.

Method used

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  • Arc discharging lamp with head and light source unit
  • Arc discharging lamp with head and light source unit
  • Arc discharging lamp with head and light source unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0045] figure 1 It is an explanatory drawing showing the structure of an example of a short-arc discharge lamp with a cap of the present invention, (a) is a longitudinal sectional view showing a section along the tube axis of the bulb, and (b) is a X-X section of (a) cross-sectional view, figure 2 yes figure 1 An exploded oblique view of the cap mounting portion of the shown short-arc discharge lamp with a cap.

[0046] This capped short-arc discharge lamp 10 is, for example, an ultra-high pressure mercury lamp, and is provided with a bulb 11. The bulb 11 has: a luminous tube portion 12 made of, for example, quartz glass to form an approximately ellipsoidal discharge space; and a rod-shaped The sealing parts 13A and 13B are connected to both ends of the arc tube part 12 and extend outward.

[0047] In the arc tube part 12, the cathode 14 and the anode 15 are arranged facing each other, and the electrode rods (inner lead rods) 16A, 16B respectively having the cathode 14 a...

no. 2 approach

[0070] image 3 It is an explanatory drawing showing the structure of another example of the short-arc discharge lamp with a base of the present invention, (a) is a side view, (b) is a cross-sectional view of the X-X section of (a), Figure 4 yes image 3 An exploded oblique view of the cap mounting portion of the shown short-arc discharge lamp with a cap. For convenience, the same reference numerals are used for the same components as those of the capped short-arc discharge lamp of the first embodiment.

[0071] The lamp cap 41 of the capped short-arc discharge lamp 40 is made of metal such as nickel, and has a substantially cylindrical shape as a whole. One end surface 45A on one side of the bulb 11 is flat, and on the outer peripheral surface of the other end, A plurality of, for example, three stopper member mounting grooves 42 are formed extending outward in the tube axial direction at positions spaced apart from each other in the circumferential direction.

[0072] Th...

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PUM

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Abstract

Provided is a short arc type discharge lamp with the base which has a high reliability for the sealing part and has a long service life and in which a high productivity can be obtained with lessened complexity of the manufacturing process of the light source unit, and a light source unit having a high productivity.The short arc type discharge lamp is equipped with a quartz glass bulb having an arc tube part and a sealing part continuing at both ends of the arc tube, and an airtight seal structure is formed by a metal foil airtightly embedded in the sealing part, and an external lead rod of which one end is connected to the metal foil is provided so as to extend protruding outward from the outer end face of the sealing part in a state connected to the external lead rod. A position restraining member for restraining the tube axis of the bulb from displacing against the base is provided. The light source unit comprises the above discharge lamp.

Description

technical field [0001] The present invention relates to a short-arc type discharge lamp with a base and a light source unit, in particular to a short-arc type discharge lamp with a base suitable for being used as a light source such as a liquid crystal display device or a projection type projector device, etc. A discharge lamp and a light source unit having the short-arc discharge lamp with a base. Background technique [0002] Currently, for example, a liquid crystal display device, a projection projector device, etc., use a light source composed of, for example, a short-arc discharge lamp. [0003] Figure 8 It is a cross-sectional view showing a schematic structure of an example of a light source unit using a conventional short-arc discharge lamp. [0004] This light source unit 70 is constituted by assembling a short-arc discharge lamp (hereinafter simply referred to as a "discharge lamp") 80 in a reflector 71. The state in the seat 73 is arranged, and is fixed on the ...

Claims

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Application Information

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IPC IPC(8): G02B27/18F21S2/00F21V19/00F21Y101/00G03B21/14H01J5/50H01J61/36
Inventor 池田俊治
Owner USHIO DENKI KK