Title:
シールドビーム形放電ランプ
Document Type and Number:
Japanese Patent JP5392639
Kind Code:
B1
Abstract:
An objective of the present invention is to provide a sealed beam-shape discharge lamp comprising a reflector which is optimized for each lamp. A sealed beam-shape discharge lamp comprises: a reflector having an open end on one side, a closed end on another side, and which is formed in a concave curved surface shape overall; a light reflecting surface which is formed in the inner circumference face of the reflector; a translucent cover (3) which is bonded to completely cover the open end side of the reflector; a metal base cap which is attached to the closed end side of the reflector; a light emitting tube which is positioned within a space which is encompassed with the reflector and the translucent cover; and ferrules which are respectively embedded in the reflectors and which are routes of two leads which respectively extend from both ends of the light-emitting tube. A region of the light reflecting surface on the closed end side of the reflector is demarcated for each lamp by a discharge within an outer sphere during evacuation caused by a high-voltage pulse.
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Inventors:
Kenji Mimura
Shigenobu Noguchi
Shigenobu Noguchi
Application Number:
JP2012187318A
Publication Date:
January 22, 2014
Filing Date:
August 28, 2012
Export Citation:
Assignee:
Iwasaki Electric Co., Ltd.
International Classes:
H01J61/34; F21S2/00; F21V7/00; H01J5/50; H01J9/20; H01J9/385; H01J61/35; H01K3/00; H01K7/00
Domestic Patent References:
| JP3293591B2 | ||||
| JP2009272304A | ||||
| JP5517950A | ||||
| JP60115144A | ||||
| JP4184857A |
Foreign References:
| EP0145291A1 |
Attorney, Agent or Firm:
Takahashi Kaname