Discharge tube lighting apparatus, light source apparatus, and display apparatus
First Claim
1. A discharge tube lighting apparatus for driving a plurality of discharge tubes, comprising:
- a balance coil having a winding input end and a plurality of winding output ends to which the discharge tubes are connected individually;
a power section for supplying ac current to the winding input end of the balance coil; and
a control section for detecting a peak value of detection voltages corresponding to voltages at the winding output ends of the balance coil and for stopping the supply of the ac current from the power section when the peak value of the detection voltages is higher than a predetermined value.
1 Assignment
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Accused Products
Abstract
A discharge tube lighting apparatus is used to drive a plurality of discharge tubes. The apparatus includes a balance coil having a winding input end and a plurality of winding output ends to which the discharge tubes are connected individually; a power section for supplying ac current to the winding input end of the balance coil; and a control section for detecting a peak value of detection voltages corresponding to voltages at the winding output ends of the balance coil and for stopping the supply of the ac current from the power section when the peak value of the detection voltages is higher than a predetermined value.
16 Citations
9 Claims
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1. A discharge tube lighting apparatus for driving a plurality of discharge tubes, comprising:
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a balance coil having a winding input end and a plurality of winding output ends to which the discharge tubes are connected individually;
a power section for supplying ac current to the winding input end of the balance coil; and
a control section for detecting a peak value of detection voltages corresponding to voltages at the winding output ends of the balance coil and for stopping the supply of the ac current from the power section when the peak value of the detection voltages is higher than a predetermined value. - View Dependent Claims (2, 3, 4, 5)
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6. A light source apparatus, comprising:
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a balance coil having a winding input end and a plurality of winding output ends;
a discharge tube section including a plurality of discharge tubes individually connected to the winding output ends of the balance coil;
a power section for supplying ac current to the winding input end of the balance coil; and
a control section for detecting a peak value of detection voltages corresponding to voltages at the winding output ends of the balance coil and for stopping the supply of the ac current from said power section when the peak value of the detection voltages is higher than a predetermined value. - View Dependent Claims (7)
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8. A display apparatus, comprising:
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a liquid crystal display panel having an image display face for displaying image information;
a discharge tube section disposed on a rear face of the liquid crystal display panel opposite the image display face; and
a discharge tube lighting apparatus for driving the discharge tube section;
the discharge tube lighting apparatus including a balance coil having a winding input end and a plurality of winding output ends to which the discharge tubes are connected individually, a power section for supplying ac current to the winding input end of the balance coil, and a control section for detecting a peak value of detection voltages corresponding to voltages at the winding output ends of the balance coil and for stopping the supply of the ac current from the power section when the peak value of the detection voltages is higher than a predetermined value. - View Dependent Claims (9)
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Specification