Title:
HIGH-INTENSITY DISCHARGE LAMP
Document Type and Number:
WIPO Patent Application WO/2012/014608
Kind Code:
A1
Abstract:
Provided is a high-intensity discharge lamp with high reliability, wherein malfunction due to insufficient strength at sealing sections, especially in the vicinity of sections where electrodes and metal foils are connected, is prevented. The high-intensity discharge lamp is provided with a light-emitting tube (2) comprising a light-emitting section (3) and sealing sections (4); metal foils (6) embedded within the sealing sections (4); and electrodes (5) one end of which are arranged to be protruded into the inside of the light-emitting section, and the other side of which are embedded inside the sealing sections (4) and connected to the metal foils (6). The embedded length (L (mm)) of the electrodes (5), which is defined by the length between the light-emitting section side end-section of the metal foil (6) and the border section between the protruding section and embedded section of the electrode (5), and the temperature (T°C) at the section where the electrode (5) and the metal foil (6) are connected were made to have a relationship of 1.8 ≤ L ≤ 2.8 and T ≤ 970.
Inventors:
MATSUMOTO Yasuhisa (LTD. Saitamaseisakusho 1-1 Ichiriyamamachi, Gyoda-sh, Saitama 05, 〒3618505, JP)
松本 泰久 (〒05 埼玉県行田市壱里山町１－１ 岩崎電気株式会社 埼玉製作所内 Saitama, 〒3618505, JP)
YOSHIZAWA Toshio (LTD. Saitamaseisakusho 1-1 Ichiriyamamachi, Gyoda-sh, Saitama 05, 〒3618505, JP)
松本 泰久 (〒05 埼玉県行田市壱里山町１－１ 岩崎電気株式会社 埼玉製作所内 Saitama, 〒3618505, JP)
YOSHIZAWA Toshio (LTD. Saitamaseisakusho 1-1 Ichiriyamamachi, Gyoda-sh, Saitama 05, 〒3618505, JP)
Application Number:
JP2011/064399
Publication Date:
February 02, 2012
Filing Date:
June 23, 2011
Export Citation:
Assignee:
IWASAKI ELECTRIC CO., LTD. (1-4-16, Nihonbashi-bakurocho Chuo-k, Tokyo 02, 〒1030002, JP)
岩崎電気株式会社 (〒02 東京都中央区日本橋馬喰町１丁目４番１６号 Tokyo, 〒1030002, JP)
MATSUMOTO Yasuhisa (LTD. Saitamaseisakusho 1-1 Ichiriyamamachi, Gyoda-sh, Saitama 05, 〒3618505, JP)
松本 泰久 (〒05 埼玉県行田市壱里山町１－１ 岩崎電気株式会社 埼玉製作所内 Saitama, 〒3618505, JP)
岩崎電気株式会社 (〒02 東京都中央区日本橋馬喰町１丁目４番１６号 Tokyo, 〒1030002, JP)
MATSUMOTO Yasuhisa (LTD. Saitamaseisakusho 1-1 Ichiriyamamachi, Gyoda-sh, Saitama 05, 〒3618505, JP)
松本 泰久 (〒05 埼玉県行田市壱里山町１－１ 岩崎電気株式会社 埼玉製作所内 Saitama, 〒3618505, JP)
International Classes:
H01J61/36; H01J61/86
Attorney, Agent or Firm:
OKABE Yuzuru et al. (No.602, Fuji Bldg. 2-3, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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Claims: