High-pressure discharge lamp and reflector combination

High-pressure discharge lamp and reflector combination assembly comprising

• an essentially bowl-shaped reflector (5) having a central opening at the reflector base end and open at the reflector light exit end;
• a high-pressure discharge lamp bulb (1, 9, 13) having a projecting bulb base end (9) positioned longitudinally with respect to the reflector axis;
• and a base (3) including an insulating, essentially cylindrical socket of temperature-resistant material formed with an inner recess slightly bigger than the bulb base end (9) to receive the bulb base end therein with clearance and to form an air circulation space between the base bulb end and said recess;
• air circulation openings (3a) formed in the base and communicating with said air circulation space surrounding the bulb base end (9), distributed along the circumference of the base;
• the bulb base end (9) being irremovably secured within said recess;
• and the reflector (5) being individually and separately irremovably secured to the base, surrounding the projecting bulb base end and spaced therefrom, the central opening thereof being in air flow communication with said air circulating space to provide a continuous ventilating path from said air circulating opening (3a) in the base, through said air circulating space past the base end of the bulb and into the reflector, and out of the open lightemitting end of the reflector for heat exchange of ambient air between the inside of the base, the lamp bulb, and the reflector.