| 摘要 |
A mine lamp has a support to which is releasably secured a flat base plate having a stepped outer edge and a forwardly directed face. This outer edge is formed with an annular abutment surface lying in a plane generally parallel to and offset backwardly from the face and an annular outwardly directed guide surface inclined at an angle to the abutment surface. A light tube is releasably supported on the base plate within the edge and in front of the face. A concave, at least partially transparent, and at least limitedly elastically deformable cover has an end wall generally parallel to and offset forwardly of the face and a continuous annular side wall extending backwardly from the end wall and having an annular rear edge formed with an annular and generally planar surface engaging backwardly against the abutment surface and an annular retaining surface engaging inwardly against the guide surface. Interengaging formations on the retaining and guide surfaces elastically retain the cover in place on the base plate with the rear edge in annular all-around contact with the outer edge. |
