Patent ID: 7554569

Claim:
A light scanning devices comprising: a light source configured to emit a laser beam; a deflector configured to deflect the laser beam emitted from the light source; a motor configured to drive the deflector so as to scan the laser beam deflected by the deflector; an optical system configured to converge the laser beam deflected by the deflector on an object surface; a housing configured such that the motor and the optical system are fixed thereto, the housing including a through hole penetrating from an inside thereof to an outside thereof; and a heat radiating member including an exposed portion that is exposed outside the housing, the heat radiating member being configured such that heat generated inside the housing is radiated outside the housing from the motor via the through hole, and the exposed portion included in the heat radiating member, wherein the motor is fixed to the housing inside the housing to cover the through hole, wherein the heat radiating member is fixed to the housing outside the housing to cover the through hole and has a thermal conductivity higher than that of the housing, and wherein the motor is in contact with the heat radiating member.