| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of preventing a flickering phenomenon from being recognized by a user because a flicker viewed at an end of a fluorescent tube in periodically changing over polarity for suppressing a dark end phenomenon gives the user an uncomfortable feeling. <P>SOLUTION: This lighting system A lights a fluorescent lamp 12 by a D.C. lighting circuit B, and is characterized by having the following requirements: (a) the D.C. lighting circuit B is provided with a polarity changeover part 11 changing over the polarity of power applied to the fluorescent lamp 12, and a control part 14 periodically operating the polarity changeover part 11; (b) shield members 20 each shielding an area in the vicinity of an electrode part of the fluorescent lamp 12 are detachably mounted to the lighting system A; and (c) the shield member 20 is provided with a heat radiation part 21 radiating heat generated from the electrode part of the fluorescent lamp 12. <P>COPYRIGHT: (C)2008,JPO&INPIT |
