Noisy bang involved in opening light source (3-4)

I believe the answer is:

gas-lamp

'light source' is the definition.
(thesaurus)

'noisy bang involved in opening' is the wordplay.
'noisy bang' becomes 'slam' (slam can mean a loud noise).
'involved in' indicates putting letters inside.
'opening' becomes 'gap' (synonyms).
'slam' going into 'gap' is 'GAS-LAMP'.

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app