Abstract: An electric heater includes a receiving chamber, heat sink members, electric heating pipes and a control portion. The receiving chamber and heat sink members are formed from extruded aluminum members. The heat sink members are sequentially arranged at both sides of the receiving chamber. The electric heating pipes are placed in the receiving chamber. The control unit activates an electric power source of the electric heating pipes in order to generate heat. Heat energy from the electric heating pipes is absorbed by extruded aluminum plates that define the receiving chamber. Heat energy is conducted quickly to the heat sink members which exchanges heat by convection with ambient cool air to rapidly raise the temperature of a room.

Abstract: A positioning device for a heat sink on computer chips (CPU) includes a seat placed on the CPU for mounting a fan and having a fixed clamping member on one end for hooking onto a shoulder of the CPU and a movable clamping member for hooking another shoulder of the CPU. An elastic element is disposed between the seat and the movable clamping member to enable the movable clamping member to hook the CPU by the restoring force thereof and which has two ends extending to both sides of the seat which are folded down to abut both ends of the CPU opposite to each other.

Abstract: A bipartite heat sink positioning device for computer chips incorporates a two-piece heat sink including a plurality of fins projecting from upper surfaces thereof and generally flat bottom surfaces adapted to engage a computer chip. Each of the sink bodies include inner and outer end portions with the inner end portions terminating in respective upstanding walls and the outer end portions being formed with respective elastic clamping parts. The outer end portions are also each formed with a pair of spaced fixing holes. The heat sink is adapted to be secured to a computer chip by positioning the first and second sink bodies upon the chip with the elastic clamping pans engaging respective opposing side shoulders of the chip and the inner end portions of the sink bodies being slightly spaced. The bipartite heat sink positioning device further includes a fan including a body provided with four tap holes positioned in spaced intervals about an outer peripheral portion of the body of the fan.