| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cold cathode discharge lamp in which an environmental load can be reduced by controlling consumption of mercury due to sputtering and reducing the amount of mercury filled in the bulb and a light-emitting device using this cold cathode discharge lamp. <P>SOLUTION: The cold cathode discharge lamp 1 is provided with a translucent airtight bulb 2 in which rare gas and mercury are filled and a phosphor layer 4 is formed on the inner circumferential face, a pair of cylindrical electrodes 5 formed of Ni or Ni alloy which are installed opposed to at both end parts of the airtight bulb 2, of which one end side is made an aperture part 5a and the other end side is made a bottom end part 5b, and in which the length dimension in axial direction from the aperture part 5b toward the bottom end part 5b is 13 mm or more, and the ratio of the length dimension to the outer diameter dimension is 4 or more, and an electrode lead wire 6 which is jointed to the bottom end part 5b of the cylindrical electrode 5 and supplies power. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
