Abstract: A case for housing an electric board of the present invention includes: a case body with a front side opened for housing an electric board inside the case body; and a lid that closes a front side of the case body, the case body having a guide portion for sliding and moving the lid parallel to the front side, and a locking portion that locks the lid slid along the guide portion, the lid having a sliding portion that slides along the guide portion, and an engaging portion that engages with the locking portion while the front side of the case body is closed. The case further includes a restricting portion provided between an inner surface of the lid and the case body to restrict sliding movement of the lid in an opening direction of the lid.