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High-pressure discharge lamp, lamp unit and projector-type image display apparatus

A technology for high-pressure discharge lamps and discharge spaces, which can be used in discharge lamps, projection devices, gas discharge lamps, etc., and can solve problems such as container damage

Inactive Publication Date: 2014-01-15
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, subsequently, people found that in the sealing part of the luminous tube, there is a possibility of container damage due to new reasons.

Method used

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  • High-pressure discharge lamp, lamp unit and projector-type image display apparatus
  • High-pressure discharge lamp, lamp unit and projector-type image display apparatus
  • High-pressure discharge lamp, lamp unit and projector-type image display apparatus

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Experimental program
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Effect test

Embodiment approach 1

[0076] Next, Embodiment 1 for carrying out the present invention will be described in detail with reference to the drawings.

[0077] The materials and numerical values ​​used in the embodiment of the present invention are merely illustrative examples, and are not limited to this aspect. In addition, it can change suitably within the range which does not deviate from the technical idea of ​​this invention. In addition, it can be combined with other embodiment within the range which does not contradict. Additionally, when including figure 2 , image 3 The scales among the various components in all the drawings are not necessarily uniform. In addition, the symbol "~" used when expressing a numerical range includes the numerical values ​​at both ends.

[0078] 1. Overall structure

[0079] figure 2 It is a front cross-sectional view showing the configuration of the arc tube of the high-pressure mercury lamp according to Embodiment 1 of the present invention. image 3 yes...

Embodiment approach 2

[0163] Figure 19 It is a partially cutaway perspective view showing the lamp unit 21 according to Embodiment 2 of the present invention. exist Figure 19 Among them, Y is the long-side central axis of the high-pressure mercury lamp, and Z is the optical axis of the reflector.

[0164] Such as Figure 19 As shown, the lamp unit 21 includes: the high-pressure mercury lamp 22 having the arc tube 1 shown in Embodiment 1 above; Here, the high-pressure mercury lamp 22 is assembled in the reflector 24 such that the central axis Y in the longitudinal direction thereof substantially coincides with the optical axis Z of the reflector 24 . In addition, it is configured such that the light emitted from the high-pressure mercury lamp 22 is reflected by the reflection surface 23 .

[0165] The high-pressure mercury lamp 22 is composed of a luminous tube 1 and a cylindrical socket 26 attached to one sealing portion 3 of the luminous tube 1 and provided with a power connection terminal 2...

Embodiment approach 3

[0171] For the projection type image display device according to Embodiment 3 of the present invention, refer to Figure 20 and Figure 21 Be explained.

[0172] Figure 20 It is a partially cutaway perspective view showing the configuration of a front projector 30 as an example of a projection-type image display device using a lamp unit 21 according to Embodiment 3. FIG. The front projector 30 is a projector that projects an image onto a screen (not shown) provided in front thereof. in addition, Figure 20 It shows the state which removed the top plate of the cabinet 31 mentioned later.

[0173] The front projector 30 includes a lamp unit 21 as a light source, an optical unit 32 , a control unit 33 , a projection lens 34 , a cooling fan unit 35 , a power supply unit 36 ​​, and the like housed in a cabinet 31 . The optical unit 32 includes an image forming unit that modulates incident light to form an image, and an illumination unit that irradiates illumination light from...

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PUM

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Abstract

The invention relates to a high-pressure discharge lamp, a lamp unit and a projector-type image display apparatus. The high-pressure discharge lamp provided by the invention has a luminescent tube provided with a pair of electrode rods in a container made of glass. The luminescent tube is provided with a light-emitting part having discharge space therein and sealing parts connected to the light-emitting part. Base ends of the electrode rods are embedded in the sealing parts; the front ends of the electrode rods project toward the discharge space; and the base ends are joint with metal foils arranged in the sealing parts in an overlap manner. The base end of each electrode rod is coated with a coating foil that is made of metal and has a C-like cross section. An end of the coating foil farthest from the light-emitting part is located closer to the light-emitting part than an end of the metal foil closest to the light-emitting part.

Description

technical field [0001] The present invention relates to a structure of a high-pressure discharge lamp, a lamp unit using the high-pressure discharge lamp, and a projection-type image display device. Background technique [0002] Among the light sources of projection-type image display devices such as liquid crystal projectors, high-pressure discharge lamps such as short-arc high-pressure mercury lamps (hereinafter referred to as "high-pressure mercury lamps") are widely used as high-pressure discharge lamps that are close to point light sources and have high brightness and high color reproducibility. use. [0003] In general, a high-pressure mercury lamp includes a light emitting tube including a light emitting portion and a sealing portion. Furthermore, as one structure of a high-pressure mercury lamp, a high-pressure mercury lamp that suppresses breakage in a sealed portion has been proposed (see JP-A-2010-129426, JP-A-2001-189149, and JP-A-2004-39349). [0004] figure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/36
CPCG03B21/2026H01J61/368H01J61/366G03B21/28
Inventor 坂口淳北原良树小川宏树
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD