Patent ID: 8115395

Claim:
A self-dusting lamp device comprising: a housing having an electrical connection portion on an end of the housing and a light penetrating portion on the other end of the housing, with an air inlet portion and an air outlet portion on the outer periphery of the housing; a heat-dissipating module being mounted in the housing and having a heat-dissipating fan; a lighting element being coupled to the heat-dissipating module and being electrically connected to the electrical connection portion; and a controlling unit having a driving circuit electrically connected to the heat-dissipating fan and a direction controlling circuit electrically connected to the driving circuit for regulating the rotation direction of the heat-dissipating fan via the driving circuit, the rotation direction changing from one of a cooling direction and a dusting direction to the other of the dusting direction and the cooling direction after a first predetermined amount of time and back after a second predetermined amount of time.