| 摘要 |
PROBLEM TO BE SOLVED: To provide a bulb type fluorescent lamp having a circuit board capable of easily selecting the preheating system of a filament electrode and provide a luminaire. SOLUTION: This luminaire is provided with a base body 3 having a base 5 electrically connectable to a commercial AC power supply, a fluorescent lamp 2 having a pair of electrodes 2d, 2e supported on the base body 3, and an electric insulating board 6 fitted in the base body 3. An inverter circuit 7 converting the commercial AC voltage fed via the base 5 into a DC voltage and outputting the high-frequency power generated by the oscillation of switching elements Q1, Q2 to the fluorescent lamp 2, an inductive element L2 limiting the output of the inverter circuit 7, and a starter capacitor C4 constituting a series resonance circuit together with the inductive element L2 are mounted on the board 6. Connectors T1-T4 are connected to both end side of the starter capacitor C4 and the output side of the inverter circuit 7. A high-frequency lighting device is provided with a short-circuiting means capable of short-circuiting the starter capacitor C4 side and the inverter circuit 7 side of the connectors T1-T4 connected to at least one electrode of the fluorescent lamp 2. |
