Small lamp bringing shop into vision (9)
I believe the answer is:
sidelight
'small lamp' is the definition.
'shop into vision' is the wordplay.
'shop' becomes 'deli' (deli is a kind of shop).
'into' is an insertion indicator.
'vision' becomes 'sight' (synonyms).
'deli' inserted within 'sight' is 'SIDELIGHT'.
'bringing' acts as a link.
(Other definitions for sidelight that I've seen before include "An essential for car" , "thin illumination" , "Small illumination (on car)" , "Car part" , "Visible warning" .)