Light shield and cooling apparatus

Claim 1

Apparatus for shielding personnel from lamp breakage, ultraviolet radiation, heat, and high intensity light hazards while at the same time reducing the noise level of high pressure air flow used in cooling the lamps and permitting in-situ service of the lamps. comprising: a high intensity ultraviolet lamp and appropriate holding fixture; an open ended cylindrical jacket constructed of heat conductive material positioned around said lamp to form an enclosure accessible only at both ends so as to define a path of radiation for said lamp which is coaxial to said cylindrical jacket; conduit means in communication with a high pressure air source extending into said jacket in a direction transverse to the axis of said cylindrical jacket for direct air cooling of said lamp; coil means substantially surrounding and attached in intimate contact with said cylindrical jacket; coolant inlet and coolant outlet means in fluid connection with said coil means for circulating a flow of liquid coolant in said coil means to keep said jacket relatively cool when said lamp is in operation; a cylindrical metallic shield coaxial with said cylindrical jacket surrounding the major portion of said jacket and said coil means and spaced therefrom, a first annular member having a central opening therein sufficiently large to permit radiation from said lamp to be directed upon external objects attached to one open end of said jacket and a second annular member attached to the other open end of said jacket, said second annular member having a service access port therein, and a cover plate removably covering said service access port so that said lamp can be serviced and replaced; and means for connecting said exterior shield, said cylindrical jacket, and said coil means into a unitary structure so as to confine radiation from said lamp to the desired direction.