The present invention relates to a case (1) for surveillance video cameras (2) comprising a first (3) and a second (4) half-shell connectable to each other to define a housing volume for at least one video camera (2). At least one of the first (3) and the second (4) half-shell comprises a transparent panel (5) intended to be placed in front of a lens of the video camera (2). The case further comprises a holding device (9) for the video camera (2) which defines a duct (8) conveying an air flow generated by air flow generating means (7) towards the transparent panel (5). Heating means (6) are provided for heating the generated air flow. At least one section of the conveying duct (8) has insulating walls. The invention relates also to a video camera holding device for use in protection cases.