| 摘要 |
A lumbar support for a car seat according to the present invention comprises a pair of coupling elements, respectively coupled with traverse fixing bars provided in internal upper and lower parts of a seat back; a pair of support plates provided on right and left sides between a pair of the coupling elements and respectively having a plurality of support wings; a support element including a sacrospinal muscle base at a lower part thereof; and a supporting height control element provided on one side of the support plate to alternatively control a protrusion height of the support plates; wherein the support element further includes a lumbar vertebra base integrally formed in an upper part of the sacrospinal muscle base.
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