| 摘要 |
The present invention relates to an electrode insulation circuit of an LED fluorescent lamp wherein the invention has the same structure as a conventional fluorescent lamp in an outer appearance, is capable of electrically and completely blocking a circuit before being inserted to a socket, has a simple configuration by using a non-contact semiconductor device and in addition, is capable of providing a perfect protection against an electric shock. To this end, the present invention connects first and second capacitors (C1, C2), a first resistor (R1), third and fourth capacitors (C3, C4), and a second resistor (R2) serially connected to each of first and second resonance output terminals (ⓐ, ⓑ) of a fluorescent lamp stablizer; connects a first to sixth diode (D1 to D6) forming a bridge rectifier circuit (R2), and a fifth capacitor (C5) that is a smoothening capacitor (C5) to output ends of the serially connected first and second capacitors (C1, C2), the first resistor (R1), the third and fourth capacitors (C3, C4), and the second resistor (R2); connects a non-contact semiconductor device (photo triac) to separate the circuit primarily because a conductive portion should be insulated from the circuit between both ends of the first to sixth diode (D1 to D6) forming the bridge rectifier circuit in order to prevent an electric shock; and when first and second resonance feedback terminals (ⓒ, ⓓ) of the fluorescent lamp stablizer are inserted to a socket, the first and second resonance feedback terminals (ⓒ, ⓓ) are short-circuited, thereby, power is supplied to the first and second resonance output terminals (ⓐ, ⓑ) of the fluorescent lamp stablizer and the non-contact semiconductor device (photo triac) is configured to be turned on and off through a third resistor (R3). |
