An optical head device may include a frame type of laser beam emitting
element provided with a heat radiating fin on which a laser chip is
mounted, a device frame on which the laser beam emitting element, a light
receiving element and an optical system are mounted, and a heat radiation
member formed of material having a superior heat conduction property. The
upper face of the laser beam emitting element is fixed to the device
frame, and an under face of the heat radiating fin which corresponds to a
portion where the laser chip is mounted is exposed on an outer side to
form an exposed part, and the heat radiation member is disposed to extend
over the exposed part and the device frame. The device frame may include
a first protective cover covering the optical disk side of the optical
elements, and a second protective cover which covers the optical disk
side of the objective lens drive mechanism and which is separately formed
from the first protective cover and made of material having a superior
heat conduction property, and a part of the second protective cover is
extended to a laser driver IC, which is disposed to be exposed on the
optical disk side, to form a heat radiation part where heat generated in
the laser driver IC is radiated.