led간판공사를 하였습니다 바 형태에 led 심고 커버 씌우고 해서 공사를 했는데 근데 안에 비가오면 물이 차내요 업체에선 문제 없다고는 하지만 어떻게 문제가 없을수 있는지..물도 안빠지고 마를때 까지 나두라는데 이게 문제가 없나요??? 이해가 안되네요