A ceiling lamp includes a lamp housing comprising a mounting bracket, a mounting pedestal mounted on the mounting bracket, an insulating cover connected to the mounting pedestal, and a lampshade enclosing the mounting bracket. The ceiling lamp further includes a light source assembly mounted in the lamp housing, the light source assembly includes a PCB, a plurality of LED beads mounted on a bottom surface of the PCB, and a processing circuit integrated on the PCB. The processing circuit includes a power consumption module electrically coupled to a mains power supply, a rectifier module electrically coupled to the power consumption module, and a constant current module electrically coupled to the rectifier module. The power consumption module comprising a fusing resistor and a varistor.
1. A ceiling lamp, comprising:
a lamp housing comprising a mounting bracket, a mounting pedestal mounted on the mounting bracket, an insulating cover connected to the mounting pedestal, and a lampshade enclosing the mounting bracket; and
a light source assembly mounted in the lamp housing, the light source assembly comprising:
a printed circuit board (PCB);
a plurality of light-emitting diode (LED) beads mounted on a bottom surface of the PCB; and
a processing circuit integrated on the PCB, the processing circuit being electrically coupled to the plurality of LED beads, the processing circuit comprising:
a power consumption module electrically coupled to a mains power supply, the power consumption module comprising a fusing resistor and a varistor, the fusing resistor being electrically coupled to a live wire of the mains power supply, and both terminals of the varistor being electrically coupled to the live wire and a neutral wire of the mains power supply, respectively;
a rectifier module electrically coupled to the power consumption module; and
a constant current module electrically coupled to the rectifier module, the constant current module is configured to supply power to the plurality of LED beads, wherein the constant current module is a constant current control chip configured to provide a stable output of the current; and
wherein the mounting bracket comprises an annular base plate and a side plate extending vertically from a periphery of the base plate, the base plate has an inner ring portion and an outer ring portion, the inner ring portion defines a plurality of uniformly spaced first connecting holes arranged on an annular circumference thereof, the outer ring portion defines a plurality of uniformly spaced second connecting holes arranged on an annular circumference thereof, each second connecting hole is configured to accommodate a first supporting post, each first connecting hole is configured to accommodate a second supporting post.
2. The ceiling lamp of claim 1 , wherein the mounting pedestal comprises a pedestal portion, a bending portion extending from a periphery of the pedestal portion, and an abutting portion connected to the bending portion, the bending portion has a substantially inverted U-shaped cross-section, the bending portion is embedded in a annular inner side of the mounting bracket, and the abutting portion is connected to the base plate.
3. The ceiling lamp of claim 2 , wherein the pedestal portion has a plurality of hooks formed on a side towards the insulating cover, the plurality of hooks are randomly distributed on the side of the pedestal portion, the PCB defines a plurality of latching holes corresponding to the plurality of hooks, each hook is latched in a latching hole.
4. The ceiling lamp of claim 3 , wherein the plurality of hooks are formed by stamping.
5. The ceiling lamp of claim 2 , wherein, the latching hole has a length of less than a length of the hook.
6. The ceiling lamp of claim 1 , wherein the insulating cover is a transparent plastic plate.
7. The ceiling lamp of claim 1 , wherein the lamp housing further comprising a fixing ring for securing the lampshade.
8. The ceiling lamp of claim 1 , wherein the constant current control chip is electrically coupled to an output terminal of the rectifier module.