| 摘要 |
<p>PURPOSE: A bed is provided to widen a part between a mattress part in which the head is located and a mattress part in which the body under the neck is located when necessary. CONSTITUTION: A bed comprises: a base(110) which is supported by a plurality of support legs; and a mattress which is placed on the top of the base. The mattress is divided into a headrest(210) in which the head of the human body is located and a mattress body in which the body under the neck is located. The gap of a shoulder receiving unit formed between the headrest and mattress body(220) is controlled by a gap control unit.</p> |
