Patent ID: 8810500

Claim:
A power-applying module comprising: a substrate; a voltage transformer disposed on the substrate; a voltage-applying pattern formed at an end portion of the substrate and electrically connected to the voltage transformer to apply a driving voltage to a lamp; a voltage induction pattern formed on the substrate adjacent to the voltage-applying pattern and spaced apart from the voltage-applying pattern to sense an induced voltage corresponding to the driving voltage, the induced voltage being induced by the voltage-applying pattern; and a protection part detecting the induced voltage to control the driving voltage output by the voltage transformer, wherein the voltage-applying pattern and the voltage induction pattern are formed on the same surface of the substrate without being formed on an opposite surface of the substrate, wherein the voltage induction pattern is rectangular and having a rectangular width greater than a linear pattern of a signal line connected to the voltage induction pattern, wherein the voltage transformer is a multiple-output transformer configured to simultaneously output respective driving voltages to a plurality of lamps, and wherein the rectangular voltage induction pattern senses the induced voltage resulting solely from the voltage applying pattern on the same surface of the substrate.