Heat sinks for distributing a thermal load are disclosed that include: a bottom plate; a front top plate; a back top plate; and a plurality of heat-dissipating fins connected to the bottom plate, the front top plate, and the back top plate, wherein the front top plate and the back top plate are separated by a predetermined distance. The crampons having an elastic band and chains mounted on the band are provided with a plurality of spikes and link rings, so that a brake power on the snowy road or icy road is increased and snow is not adhered to the crampons. The resultant coating is then dewatered through said product. Transmission sections 102-1 to 102-n carry out processing necessary for radio transmission such as modulation, coding and frequency conversion, etc.