Flashlight unit

A flashlight unit comprising:

• a housing having an opening;
• a lens located in the opening of the housing;
• a light source located in the housing for emitting light through the lens in a lighting direction, wherein the light source is movable in the lighting direction, relative to the lens, between first and second end positions, for adjusting light emission from the flashlight unit;
• an adjusting mechanism including an annular rotatable adjusting member that is externally exposed and surrounds part of the housing, wherein
• the annular rotatable adjusting member rotates about a rotation axis to adjust position of the light source in the lighting direction, relative to the lens, and
• the rotation axis of the annular rotatable adjusting member is parallel to the lighting direction of the light source;
• and
• limiting means for limiting rotational movement of the annular rotatable adjusting member when the light source reaches the first end position and the second end position, and including
• a stopper located on the housing for limiting the rotation of the annular rotatable adjusting member and having first and second opposed sides, and
• an internal protrusion on only part of an inner perimeter of the annular rotatable adjusting member and rotating with the annular rotatable adjusting member along a rotation path, wherein
• the rotation path is positioned about an axis that is parallel to the rotation axis, and
• the stopper is positioned along the rotation path so that a respective one of the first and second sides of the stopper abuts the protrusion when the light source reaches the first end position and the second end position, respectively, limiting further movement of the light source along the lighting direction.