| 摘要 |
A cold cathode tube 15 includes an elongated glass tube 18, which has a primary-seal-side end portion 31 as one end portion thereof and a secondary-seal-side end portion 33 as the other end portion thereof. An electrode 19 is enclosed in each end portion 31, 33 of the glass tube 18. A ferrule 20 is attached to the outer side of each end portion 31, 33, and is connected to the corresponding electrode 19. The ferrule 20A-1 attached to the primary-seal-side end portion 31 and the ferrule 20B-1 attached to the secondary-seal-side end portion 33 differ in color of the entire surface from each other. A plurality of cold cathode tubes 15 are arranged and mounted in a chassis 12, so that adjacent cold cathode tubes 15 lie in the opposite orientation to each other.
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