Filament lamp

A filament lamp, comprising a plastic housing, a transfer switch, and a lateral rotary structure, wherein the transfer switch is disposed in the plastic housing, an outer wall of the plastic housing is provided with an opening, the lateral rotary structure is rotatably disposed on the outer wall of the plastic housing, an inner side of the lateral rotary structure extends to form a drive connecting structure, and the drive connecting structure passes through the opening to be connected with the transfer switch;

• the transfer switch comprises a movable stop lever for linearly toggling and switching gears of the filament lamp, the drive connecting structure comprises a claw, and the claw is clamped with the movable stop lever;
• the plastic housing comprises an upper housing and a lower housing, the upper housing forms a first clamping ring, the lower housing forms a second clamping ring, and the upper housing is buckled with the lower housing;
• the transfer switch is disposed on a circuit board;
• an inner wall of the first clamping ring is provided with first convex edges, and upper edges of the circuit board abut against the first convex edges;
• the inner wall of the first clamping ring is provided with at least two elastic clamping hooks, each of the at least two elastic clamping hooks comprise a second convex edge that protrudes inward at one end toward an axial center of the upper housing, the circuit board is positioned in a gap between the first convex edges and the second convex edges;
• and the second clamping ring is provided with avoidance openings corresponding to the elastic clamping hooks.