| 摘要 |
A sealed structure of a circular tubular heat pipe is formed on a distal opening of a heat pipe. A pressed recess portion recessed inwards from one side of a wall portion is formed on the distal opening. The wall portion of the distal opening is pressed from the pressed recess portion to the other side of the wall portion and is sealed therewith, thereby forming a flattened section of the heat pipe. The flattened section deflects toward one side of the body of the heat pipe, and it has two wing portions bending obliquely toward the pressed recess portion. The tip of one of the wing portions is brought into contact with the outside of the tip of the other wing portion, so that the flattened section forms a curled portion that reduces gradually from bottom to top.
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