Patent ID: 7771079
Filing Date: 2010-08-10
Classification: H01J

Abstract:
1. A compact reflector fluorescent lamp unit, comprising: a lamp cap; a lamp tube; a circuit board having a plurality of insertion holes, each insertion hole having a hollow rivet made of a conducting material riveted therein; a housing having mounting holes arranged at a top surface thereof for mounting the lamp cap, having an annular recess arranged at a bottom thereof, and having a plurality of snap-fit members arranged on an inner circumferential wall of the housing and adjacent to the annular recess; an intermediate plate having a base plate having an upper surface and an opposing lower surface, the upper surface having an annular boss thereon which protrudes upwardly from inside of a periphery of the base plate, the annular boss being engaged with the annular recess of the housing, the upper surface further having a plurality of electrical connection pins corresponding to the insertion holes of the circuit board, the electrical connection pins being plugged into the corresponding insertion holes of the circuit board, the lower surface of the base plate having at least two protrusions, and a hollow protrusion located on one side of the at least two protrusions, the intermediate plate further having a plurality of snap-fit legs corresponding to the snap-fit members of the housing and being arranged between the periphery of the base plate and an outside of the annular boss, the snap-fit legs being coupled with the snap-fit members of the housing; an electronic ballast assembly connected with the lamp cap and the lamp tube, and being mounted on the circuit board, so that the electronic ballast assembly and the circuit board are jointly installable in the housing so as to be enclosed by the housing and intermediate plate; a reflection cup having a cavity in which the lamp tube is received, a top surface of the reflection cup having a plurality of assembly holes corresponding to the at least two protrusions of the intermediate plate and a notch located at one side of the assembly holes, the reflection cup being fixed at the lower surface of the intermediate plate by coupling the assembly holes and the at least two protrusions of the intermediate plate together, and by coupling the notch and the hollow protrusion of the intermediate plate together; and a transparent plate mounted on an open end of the reflection cup.