Heat sink and the producing method thereof

A heat sink comprising:

• a plurality of heat sink elements each including a thin thermally conductive rectangular plate, each of said plurality of heat sink elements having a plurality of openings arranged along a pair of opposing lateral edges of heat sink elements to thereby form an array of fins, and said plurality of openings constituting a first group of openings through which a coolant is allowed to flow;
• separating means for separating adjacent heat sink elements by a predetermined distance in order to separate adjacent arrays of fins formed in each of said heat sink elements, said separating means being arranged along said pair of lateral edges of heat sink elements;
• and
• wherein predetermined distances between said plurality of heat sink elements separated by said separating means constitute a second group of openings through which the coolant is allowed to flow.

A heat sink comprising:

• a plurality of heat sink elements each including a thin thermally conductive plate, each of said plurality of heat sink elements having a plurality of openings arranged in one direction to thereby form an array of fins, said plurality of fins constituting a first group of openings through which a coolant is allowed to flow;
• separating means for separating adjacent heat sink elements by a predetermined distance in order to separate adjacent arrays of fins formed in each of said heat sink elements, said separating means extending in said one direction and being arranged along lateral edges of said plurality of heat sink elements, predetermined distances between said plurality of heat sink elements separated by said separating means constituting a second group of openings through which the coolant is allowed to flow from a direction other than through said first group of openings;
• a connecting region formed of said lateral edges of said plurality of heat sink elements and said separating means;
• and
• a thermally conductive plate thermally connected to said connecting region, said thermally conductive plate having a contact surface capable of contacting all of said connecting region, and being thermally connected to an electric component;
• whereby said electric component generates heat and transfers the heat to said array of fins through said connecting region and said thermally conductive plate, and then to the coolant flowing through at least one of said first and second groups of openings.