Patent ID: 7211967

Claim:
A strip light device, comprising: a constant current stabilization unit ( 2 H) having a first, a second, a third and a ground terminals; a first current regulator ( 22 H) as an output being electrically connected to the third terminal and the ground terminal of the constant current stabilization unit ( 2 H); a second current regulator ( 23 H) being electrically connected to both the first terminal of the constant current stabilization unit ( 2 H) and a positive terminal of a power source; and an illuminating unit ( 1 ) including a plurality of illuminators ( 11 ) directly and electrically coupled in series which is electrically connected to the second terminal of the constant current stabilization unit ( 2 H) and the positive terminal of the power source; the constant current stabilization unit ( 2 H) further comprising: a first transistor (Q 6 ) as a switch means and having a first resistor (R 8 ) electrically coupled in parallel to the second current regulator ( 23 H) and the illuminating unit and being turned on in response to current feeding from the first resistor; a second transistor (Q 5 ) as a controller electrically coupled in parallel to the first transistor (Q 6 ) and the first current regulator ( 22 H), the second transistor (Q 5 ) being adapted to control a turning on of the first transistor (Q 6 ) in response to feeding current from the first current regulator ( 22 H) for maintaining a constant current; a third transistor (Q 7 ) for compensating temperature and including a second resistor (R 7 ) and a first capacitor (C 2 ) and being electrically coupled in parallel to the first transistor (Q 6 ); and a voltage stabilizer ( 21 H) including a fourth transistor (Q 1 ), a fifth transistor (Q 2 ), a sixth transistor (Q 3 ), a seventh transistor (Q 4 ), a plurality of third resistors (R 1 –R 6 ), and a second capacitor (C 1 ) wherein a turning on or not of the first transistor (Q 6 ) is responsible for comparing an input voltage with a predetermined voltage and amplifying an output voltage, and the second capacitor (C 1 ) is charged by one of the third resistors; wherein the constant current stabilization unit ( 2 H) is operative to supply a constant current to each of the illuminators ( 11 ), the second capacitor (C 1 ) is discharged for turning on the third transistor (Q 7 ) in response to rising temperature, and the first capacitor (C 2 ) is discharged to decrease current flowing through the illuminating unit ( 1 ).