the home of those who smile (will be blessed with good fortune)
Abbreviation of 笑門来福 (しょうもんらいふく), a traditional saying often seen on New Year's decorations hung over the front door. It conveys the idea that a smiling household attracts happiness and prosperity.
See also: 笑門来福
We hung a New Year's decoration with '笑門' written on it over the entrance.