| 摘要 |
A lighting apparatus is provided to minimize influence of heat generated from LEDs(Light Emitting Diode) by including a PTCR(Positive Temperature Coefficient Resistor) with a variable resistance characteristic. A lighting apparatus includes a power supply(110), a plurality of LEDs(130), and a variable resistor(140). The plurality of LEDs emit light by the power supply. The variable resistor is electrically connected between the power supply and the LEDs and has resistance varied by heat generated from the LEDs. A resistor(120) to restrict current applied to the LEDs or a capacitor to restrict the current applied to the LEDs without loss is installed between the power supply and the LEDs. |
