| 摘要 |
PROBLEM TO BE SOLVED: To provide a circular fluorescent lamp in which a base, installed as it covers both ends of a bulb, has little play such as rotation, movement or the like, and lead wires are not contacted or short circuited respectively, and also provide a luminaire using the circular fluorescent lamp. SOLUTION: The circular fluorescent lamp L is equipped with such a circular glass tube bulb 1 that sealing parts 2 with a stem 3 are formed on both edges, a recess part 4 formed near the sealing parts 2 of the glass tube bulb 1, a phosphor coat formed on the glass tube bulb 1, a discharge medium enclosed in the glass tube bulb 1, a discharge electrode 5F installed on a lead wire 5 of the stem 3, regulation members 8 installed inside the recess part 4 near the sealing parts 2, and a base 7 which is installed bridging the sealing parts, 2 and 2, on both edges, and whose projection 7T, projecting so that the rotation is regulated by being contracted with the regulation members 8 inside the recess part 4, is formed on a inner wall surface side. The lamp L is installed in the luminaire. |
