(57) A reversible fixing device for a lighting apparatus to be encased in a support panel
such as a false ceiling, comprising: a frame (1) fit to be encased within a hole of
the panel, defining an opening (2) for housing the apparatus and comprising a peripheral
lip (4) extending outwards, for abutting against the outer face of the panel; sliders
(8) placed on the outside of the frame (1), axially slidable between a fixing position,
adjacent to said lip (4), and a fitting-up position; means (11, 13) for operating
the sliders (8) from the fitting-up position to the fixing position; first elastic
means (16) cooperating between the sliders (8) and the lip (4) of the frame (1), for
hindering the sliding of the sliders (8) towards said fixing position and radially
deformable owing to such sliding, whereby, when said frame (1) is encased said first
elastic means (16) force the lip (4) against the panel; and stop means (17, 18) associated
to the frame (1), fit for engagement with the sliders (8) in order to stop them in
the fixing position.
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