Discharge lamp

摘要

A discharge lamp 1 has a housing 3 containing ballast circuitry arranged on a printed circuit board (PCB) 10. The PCB may be mounted vertically (Figure 7) or horizontally (Figure 4). Supports (6) have ribs (7,7') for engaging edges of the PCB (10). The ribs 7' (Figure 7) define a wedge-shaped slot (Figure 7) which holds the PCB and allows for variations in the dimensions of the PCB. The ribs 7 (Figure 4) engage the internal edges of a notch in the PCB. The ribs 7 define a wedge which holds the PCB and allows for variations in the dimensions of the PCB. Preferably the ribs 7 are deformed when the PCB is pushed onto them. <MATH> <MATH>