To provide a cooling storage chamber capable of evading loosening of an interior light.
A supporting member 5 is made of a soft synthetic resin such as a deformable soft vinyl chloride resin and is fixed to a socket main body 4. When the interior light 2 is attached to an interior light socket 3, a base 2A is engaged with a socket 8 and a part of the interior light 2 is covered with the supporting member 5. The interior light 2 abuts on the supporting member 5 and the support member 5 is tightly contacted with the periphery of the interior light 2 so as to surely hold the interior light 2. Therefore, the loosening of the interior light 2 and the generation of play can be surely evaded.
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