Illumination unit

FIG. 1 is a bottom, front, right side perspective view of an illumination unit showing a first embodiment of our new design;

FIG. 2 is a top, front, left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a left side sectional view thereof, the section taken through line 9 shown in FIG. 8 ;

FIG. 10 is a bottom, front, right side perspective view showing a second embodiment thereof;

FIG. 11 is a top, front, left side perspective view of the second embodiment of FIG. 10 ;

FIG. 12 is a front elevational view of the second embodiment of FIG. 10 ;

FIG. 13 is a rear elevational view of the second embodiment of FIG. 10 ;

FIG. 14 is a left side elevational view of the second embodiment of FIG. 10 ;

FIG. 15 is a right side elevational view of the second embodiment of FIG. 10 ;

FIG. 16 is a top plan view of the second embodiment of FIG. 10 ;

FIG. 17 is a bottom plan view of the second embodiment of FIG. 10 ; and,

FIG. 18 is a left side sectional view of the second embodiment of FIG. 10 , the section taken through line 18 shown in FIG. 17 .

The broken lines illustrate portions of the illumination unit that form no part of the claimed design. The dash-dot-dash lines shown in the figures (including FIGS. 1-3, 5-6, 8-12 , 14 - 15 , and 17 - 18 ) define boundaries of the claimed design and form no part of the claimed design.