| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board with reduced noise. SOLUTION: High-frequency noise generated at an inverter circuit 30 is prevented from returning to a power supply line, by grounding leaked part of noise generated at the inverter 30 to the illuminator main body by a noise absorbing pattern 14. High-frequency noise at a high-frequency output terminal 36 is also prevented from returning to the power supply line by grounding to the illuminator main body by the noise absorbing pattern 14. As high-frequency noise is already removed at a filter part 20, by connecting from an opening 15 of the noise absorbing pattern 14 to a power input terminal 13 through insertion, the part between the filter part 20 and the power input terminal 13 does not intersects the noise absorbing pattern 14, therefore, while preventing high-frequency noise from leaking into the power input terminal 13 and a power supply line 2, the insulation treatment between the noise absorbing pattern become unnecessary. |
