Abstract: A lamp assembly comprising an elongate source of radiation, a reflector with an elongate reflective surface partly surrounding the source and having an opening for emission of radiation down towards a substrate for curing a coating thereon. The reflective surface has a generally concave profile and the source is located near the base of the concavity. The reflector includes two reflector elements each having a shaped surface which combines with the other when the elements are held in a first relative position to form a cavity in which the source is located and on the surface of which the reflective surface is provided. The source is mounted to be movable with one element to a second position relative the other element in which the source is located in a user accessible position.

Abstract: An outer peripheral wall 14b1 of an attachment groove 14b of a lamp body 14 is branched for vard into two branch walls 14b1A, 14b1B in the portion located on the side of a right end 16A of a front lens 16. Thus, the inner branch wall 14b1A can be set to have such a relatively small open angle that can prevent a sealant 20 from running off onto its outer periphery upon insertion of an attachment leg 16a into the attachment groove 14b, whereas the outer branch wall 14b1B can be set to have a large open angle according to the requirements of the lamp design and the like.