Rotating bulb

A rotating bulb, comprising:

• a lamp holder (1), a lower lamp cup cover (2), a control board (3), a control board fixing seat (4), an upper lamp cup cover (5), a lamp panel (6), and a lampshade (7), wherein the lamp holder (1) is connected above the lower lamp cup cover (2);
• the control board (3) is mounted on the control board fixing seat (4);
• the control board (3) and the control board fixing seat (4) are accommodated in a lower part of the lower lamp cup cover (2);
• the control board fixing seat (4) is connected to the lower lamp cup cover (2);
• the control board fixing seat (4) is rotatably connected to the upper lamp cup cover (5);
• the lower lamp cup cover (2) is arranged above the upper lamp cup cover (5);
• the upper lamp cup cover (5) is detachably connected to the lampshade (7);
• the lamp panel (6) is mounted inside a lower part of the upper lamp cup cover (5);
• the upper lamp cup cover (5) is provided with a circular arc groove (51);
• through holes are respectively provided at two ends of the circular arc groove (51);
• the upper lamp cup cover (5) is provided with a circular arc through hole;
• a convex column (41) corresponding to the circular arc groove (51) is arranged at a bottom of the control board fixing seat (4);
• the control board fixing seat (4) is hollow;
• the upper lamp cup cover (5) is provided with a rotating shaft (52);
• the control board (3) is provided with a power management circuit, an analog-to-digital conversion (ADC) chip, an adjustable resistor, a bulb driving circuit, and a control chip;
• the adjustable resistor and the control chip are connected to the ADC chip;
• the control chip is connected to the bulb driving circuit;
• a square edge-hole component (31) is arranged on the adjustable resistor;
• and the rotating shaft (52) passes through the control board fixing seat (4) and is inserted into the edge-hole component (31).