As the answers here acknowledge that if the ball hits the helmet behind the wicket keeper then 5 runs are given to the batting side as obstructing the field.
My question is will the same apply if the ball hits the helmet of the wicket keeper which he is wearing and not behind him.
Will runs be given for this also ?
Is there any past reference for this ?
If this applies for helmet then why not for the pads worn by the fielder at silly point.