KuthuVilakku is lit to signify the beginning of any event or occasion. It signifies the three Gods Bramha, Vishnu and Shiva who are believed to be present in the Vilakku. At the base part is Bramha, the middle part Vishnu and the broad part on top is Shiva. The glow of the vilakku is represented as Goddess Lakshmi,the Light by Goddess Saraswati and the Heat by Goddess Parvati. The five petals or nozzles are said to represent the five elements of Nature — earth, water, fire, air and sky or space.
During Kaarthigai Deepam, Rows of Vilakkus are lit in every house. Karthigai is essentially a festival of lamps. The lighted lamp is considered an auspicious symbol. It is believed to ward off evil forces and usher in prosperity and joy. While the lighted lamp is important for all Hindu rituals and festivals, it is indispensable for Karthigai.