Modular illuminated indicator panel mounted housing with internal component circuit board

Claim 1

An indicating module mounted into a cut-out portion of a panel having a front face and a rear face, comprising: a substantially parallelepipedal casing which is open both at the front and rear ends, said casing being provided on the external faces of at least a number of its four walls with sliding assembly means which are complementary to each other on two opposite faces and being provided at the front end thereof with a peripheral flange which is applied against the front face of the panel; a translucent cap fixed in position by snap-action engagement over the aforementioned front end; a conNection unit fixed in position by snap-action engagement in the aforementioned rear end; a lamp-holder assembly mounted in said casing; at least two fixing members mounted on said two opposite faces of said casing and applied and braced against the rear face of the panel; wherein at least a number of the four walls of the casing are separated from each other in the vicinity of the aforementioned front end, wherein the aforementioned flange has a wedge-shaped cross-section so as to permit the insertion of the casing into the aforementioned cut-out portion of the panel from the rear side of said panel, wherein the fixing members are identical with each other, wherein said members comprise assembly means in contact with the aforementioned sliding assembly means of the casing, wherein said members each comprise at least one tapered catch engaging with a rack having teeth on each said opposite face, and wherein said members are applied against the rear face of the panel by means of two flexible fingers, the permissible distance of angular displacement of said fingers being longer than the distance between two successive teeth of the aforementioned rack, said member which carries at least one tapered catch being accessible from the rear face in order to permit of unlocking.