| 摘要 |
The present invention provides a single base fluorescent lamp of a bulb-type or the like that is capable of achieving a peak luminous flux output value when used in a lighting fixture. That is, a lamp (1) has an arc tube (2) that includes therein a spirally-wound spiral part, a pair of electrodes and a winding discharge path, a resin holding member (3) that holds the arc tube (2) such that the arc tube (2) stands, a base (6) for being connected with a lighting apparatus. The present invention has a maximum luminous flux output when a lamp ambient temperature reaches a predetermined temperature of 30° C. or higher.
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