Patent ID: 9000668
Filing Date: 2015-04-07
Classification: F21K,F21V,H05B,Y02B

Abstract:
1. A self-adaptive LED fluorescent lamp, comprising a housing ( 9 ), a PCB ( 10 ) and two lamp caps ( 11 ), the housing ( 9 ) comprising a lampshade ( 12 ) and a radiator ( 13 ) that are fastened with each other, each one of the two lamp caps ( 11 ) being sleeved on two sides of the housing ( 9 ), one or more LED lamp sets ( 15 ) and LED driving control units ( 16 ) being arranged on the PCB ( 10 ), a heat conductive double-sided silicone tape ( 14 ) being stuck between the PCB ( 10 ) and the radiator, the LED driving control unit ( 16 ) comprising an input signal module ( 1 ), a protection module and a rectifier filter module ( 4 ), wherein the LED driving control unit ( 16 ) further comprises a voltage detection module 5 arranged behind the rectifier filter module ( 4 ) to detect and judge the voltage, an intelligent switching module ( 6 ) connected with the voltage detection module ( 5 ) to achieve intelligent switchover of the LED lamps, and a linear constant current module ( 7 ) connected with the intelligent switching module ( 6 ); the voltage detection module ( 5 ) comprises a first resistor (R 5 ) and a second resistor (R 6 ), which are connected between a positive output end and a negative output end of the rectifier filter module ( 4 ) for voltage division, and a first capacitor C 3 connected with the second resistor (R 6 ) in parallel; the intelligent switching module ( 6 ) comprises a first relay (S 1 ), a second relay (S 2 ) and a field effect transistor (Q), a grid end G of the field effect transistor (Q) is connected with a common end of the first resistor (R 5 ) and the second resistor (R 6 ), a drain end D of the field effect transistor (Q) is connected with a negative end (VCC−) of the second relay (S 2 ), a source end S of the field effect transistor (Q) is connected with a negative output end of the rectifier filter module ( 4 ), the output of the intelligent switching module ( 6 ) is connected with one or more LED lamp sets ( 15 ), in each lamp set ( 15 ), one or more LED lamps are connected in series, and each LED lamp is connected with one or more compensation resistors (R) in series; and, the linear constant current module ( 7 ) comprises two IC linear driving chips, the input end (IN) of each of the IC linear driving chips is connected with a second normally open end (OFF 2 ) of the second relay (S 2 ), and the output end (OUT) thereof is connected with the negative output end of the rectifier filter module ( 4 ).