| 摘要 |
The lamp arrangement includes a lamp (1) and cooler (2). The lamp has a planar rear face (11). The cooler includes several gas outlet orifices (25) distributed over the rear face of the lamp and arranged so that cooling gas emerges through the orifices as jets impinging on the rear face of the lamp at an angle to promote efficient transfer of heat from the lamp to the cooling gas. The cooler has a plenum chamber (28) with a forward wall extending parallel to and spaced from the rear face of the lamp. The outlet orifices are formed in the forward wall. The orifices are elongate slots extending parallel to one another. The spacing, of the rear face of the lamp from the orifices is between about four to five times the width of each orifice. The orifices are about 1 mm wide. Independent claims are also given for: (1) a cooling unit for a lamp; and (2) a method of cooling a lamp. |
