a rapid replacement of the led power supply units the lighting appliance according to the present invention will comprise in addition appropriate seats suitable for housing connection cables between the devices housed in said inner compartment 14 and said punctiform lighting devices 13 said cables will advantageously be fitted with suitable connectors so as to be able to easily separate the devices housed in said inner compartment 14 and said punctiform lighting devices 13 as may be seen clearly in fig3 the cover 12 comprises a cover section 12 a or cover portion 12 a and an optical section 12 b or optical portion 12 b as may be seen in the appended drawings the optical section 12 b is provided to receive the aforesaid plurality of punctiform lighting devices 13 and preferably the relative reflector and or refractor means and is an extension of the cover section 12 a in particular if as in the example shown the cover 12 has a main longitudinal direction of extension p 1 fig1 the optical section 12 b is an extension of the cover section 12 b in the main longitudinal direction of extension p 1 it is to be observed that the aforementioned hinging.