(57) Built-in lighting device comprising a containment body (1) of one or more light sources,
a covering plate (2) of said containment body (1) and an outer casing (3) for the
housing of said containment body (1) characterized in that it also comprises a supporting
ring (8), with an external perimeter corresponding to the perimeter of said covering
plate (2) and sealed to the lower surface of said covering plate (2), coupling means
(10, 11, 12) between said supporting ring (8) and said containment body (1) and coupling
means (5, 6) between said containment body (1) and said outer casing (3).
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