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Lamp device, manufacturing method for same and projector having a lamp device

A manufacturing method and one of the technologies can be applied to the components of lighting devices, projection devices, lighting devices, etc., and can solve problems such as increased product cost and increased quantity.

Active Publication Date: 2009-01-28
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, attaching a metal cover to the rear end of the sealing portion or providing a light shield on the cover housing the lamp unit increases the number of parts or requires the preparation of molds for these parts, resulting in an increase in product cost

Method used

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  • Lamp device, manufacturing method for same and projector having a lamp device
  • Lamp device, manufacturing method for same and projector having a lamp device
  • Lamp device, manufacturing method for same and projector having a lamp device

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Embodiment Construction

[0036] Next, a lamp device, a manufacturing method thereof, and a projector including the lamp device according to embodiments of the present invention will be described with reference to the respective drawings. In addition, the same reference numerals are attached to the same parts in the respective drawings, and a part of explanations are omitted.

[0037] The structure of the light fixture.

[0038] figure 1 It is a sectional view showing the structure of the lamp device 1 according to the embodiment of the present invention. The lamp device 1 has a luminous tube 10 and a reflector 20 . The arc tube 10 is, for example, a high-pressure mercury lamp, made of quartz glass, etc., and has a central spherical portion 11 and a pair of sealing portions 13a, 13b formed continuously from the spherical portion 11 on both sides of the spherical portion 11 . Mercury, a rare gas, a small amount of halogen, and the like are sealed inside the spherical portion 11, and electrodes 12a, 1...

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PUM

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Abstract

A lamp device and a projector having the lamp device eliminated of light leaking in a direction opposite to a reflecting direction at a rear end of an encapsulation fixing an arc tube on a reflection mirror is simply and inexpensively provided. An arc tube and a reflection mirror are provided. The arc tube has encapsulations one of which is inserted in a cylinder of the reflection mirror thereby securing the encapsulation and the cylinder together by an adhesive. The bulb of the arc tube and the other encapsulation are positioned on a side close to a reflection surface of the reflection mirror. The encapsulation inserted in the cylinder and positioned on a side opposite to the reflection surface has an end at least at an end face of which is covered with the adhesive thereby providing light shield.

Description

[0001] technology area [0002] The invention relates to a lamp device and a projector formed by fixing a luminous tube on a reflector. Background technique [0003] A lamp device formed by inserting one sealing part of a light emitting tube having a light emitting part and a pair of sealing parts supporting the light emitting part into a cylindrical part provided at the center part of a reflector having a curved reflective surface and bonding and fixing it is It is widely known (for example, Patent Document 1). In such a lamp device, the light from the light emitting unit is reflected by the reflective surface, propagates forward of the reflective surface, and is utilized. However, there is a problem that light leaks from the rear end of the sealing portion fixed to the cylindrical portion of the reflector in a direction opposite to the reflection direction, thereby deteriorating components arranged on the rear side of the lamp device. To solve such a problem, for example, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/86H04N5/74G03B21/14F21K2/00F21S2/00F21V19/00F21Y101/00G03B21/20
CPCG03B21/2026G03B21/20
Inventor 藤泽尚平小林弘幸寺岛亨田中和裕竹泽武士町田友信高户雄二
Owner SEIKO EPSON CORP