PURPOSE: To obtain an electric base board receiving case in which an electric base board does not come off.

CONSTITUTION: This electric base board receiving case is provided with engagement parts 33, 34 engaging with engagement claws 48a... of an electric base board 31 provided in the upper and lower walls 14, 15 of the front part of a receiving-case main body 32, guide holdes made so as to extend in the direction of a diagonal line from the upper part and the lower part of the left and right walls 35, 36 in the front part of the receiving-case main body 32 and an engagement operating part which is made so as to detachably engage the engagement claws 48a... movably inserted into the guide holes of the upper side-walls 35a, 36a and the lower side-walls 35b, 36b with the engagement parts 33, 34.