To ensure protection against an abnormal discharge of a fluorescent lamp occurring under abnormal conditions including the terminal stage of the life of the lamp.
This self-ballasted fluorescent lamp includes: a fluorescent lamp main body 1 attached to a device main body; and a wiring board 2a housed in the device main body. Switching elements Q1 and Q2 as one of components constituting an inverter INV for allowing the lamp main body 1 to illuminate are mounted onto the wiring board 2a. Ceramic resistances (resistors R4, R6 as negative feedback resistances) are connected to emitter terminals of the switching elements Q1 and Q2, and ceramic resistances (resistors R3, R5 as base resistances) are connected to the base terminals.
COPYRIGHT: (C)2007,JPO&INPIT
Kunihiko raft
Takeshi Yasuda
| JP6203805A | ||||
| JP2003157991A | ||||
| JP6088191U | ||||
| JP2005051901A |
| WO2000007413A1 |