I don’t understand, if you have set type: image you should already see the path in the html, btw here is a quick example for you.
1) Create a TV with this settings
Template Variable Name: myimagename
Caption: Insert Image
Input Type: Image
In
Template Access check the template where you need the Tv.
2) Add smth like this in your template:
<img src="[*myimagename*]" alt="[*longtitle*]" />