fig1 shows a protective device according to the invention for a display device 1 , such as monitors for displaying heart rates , blood pressure , ecg , eec or visual body part displays , at a medical working environment . the display facility 1 features one or a number of screens , which are delimited by an image surface 2 of the working environment . to protect the image surface 2 , a protective element 3 is available , which is arranged in the exemplary embodiment at a minimal distance in front of the image surface 2 . the protective element 3 is designed as a transparent film and is prepared for use in a medical working environment by means of sterilization . as a result of the vicinity of the image surface 2 to an operating table 11 , contamination of the image surface 2 by bodily fluids or secretions cannot be ruled out . the protective element 3 thus also comprises a fluid - rejecting surface , so as to reduce the ultimately remaining contamination on the protective element 3 by draining the fluid , in the case of fluid squirting onto the protective element surface . in addition , an anti - reflecting layer is applied to the side of the protective element 3 facing away from the image surface 2 , so as to reduce disturbing reflections of the operating theatre lighting ( not shown ) in the region of the image surface 2 of the display facility 1 . the protective element 3 is mounted in a dispenser 4 as a film reel roll . the dispenser 4 can be fixed here to the display facility 1 , on a suitable frame 12 or another suitable fixing option such as a wall . by means of traction , the protective element 3 can be passed out of the dispenser 4 in front of the image surface 2 . this can be carried out manually or with the aid of an electrical drive for instance . a fixing facility 5 for the protective element 3 can be positioned for instance on the side of the display facility 1 facing the dispensing facility 4 . the options mentioned for the dispenser 4 can be transferred for securing the fixing facility 5 . the protective element 3 is stretched in front of the image surface 2 by means of the fixing facility 5 , in order to ensure constant examination conditions for the used protective element segment . if the contamination on the protective element 3 results in the legibility of the screen content being impaired , the contaminated protective element 3 can be removed by means of traction . the used protective element 3 is removed by means of traction and the unused protective element 3 is fed out of the dispenser 4 at the same time . the used protective element 3 can be removed from the unused protective element 3 by means of a separation device 6 , for instance , in which the used protective element 3 is passed over a tear - off edge or a cutting facility . if the used protective element 3 is mechanically undamaged , this must not necessarily be removed by a separation device 6 . instead it can by gathered by a roll - up facility 7 , so as to reuse it subsequently after removing the contamination and renewing the conditioning . the roll - up facility 7 for the used protective element 3 can also function here as a fixing device 5 . in the presence of a roll - up facility 7 , the use of a cleaning facility 8 advantageously proves itself , which can be arranged for instance between fixing device 5 and roll - up facility 7 . the cleaning facility 8 enables a cleaned and optionally conditioned protective element 3 to be rolled up in the roll - up facility 7 . the protective element 3 wound up in the roll - up facility 7 can be directly fed to the dispenser 4 if necessary . in fig2 , the arrangement of the display facility 1 , frame 12 , fixing device 5 , separation device 6 , cleaning facility 8 and roll - up facility 7 is shown as an enlarged cross - section . the said means as well as the dispenser 4 can be fixed to the frame 12 . the use of a roll - up facility 7 allows the fixing device 5 and the separation device 6 to be removed for instance , since the roll - up facility 7 can assume the function of the fixing device 5 , and a separation of the protective element is only necessary in exceptional cases , namely when the protective element 3 is mechanically damaged . for this purpose , a separation device 6 can be an integral part of the roll - up facility 7 . possible variants of the protective device with a minimal space requirement are shown in fig3 and fig4 . the image surface 2 of the display facility 1 is protected by a protective element 3 which comprises an adhesive layer 9 which can be removed from the image surface 2 . in this exemplary embodiment , the protective element 3 can be designed as a film . the adhesive layer 9 can be present on the protective element 3 over the whole surface or also in a structured fashion . in fig3 , the size of the protective element 3 is adjusted to the size of the image surface 2 and can be directly applied to the image surface 2 . the adhesive layer 9 adheres the protective element 3 to the image surface 2 and protects this against contamination . if the contamination of the protective element 3 results in a reduction in the legibility of the image contents , the protective element 3 can be easily detached from the image surface with the aid of a tab 10 and can be replaced by a new protective element 3 . alternatively , in fig4 the protective element 3 is dimensioned larger than the image surface 2 , approximately to the size of the frame of the display facility 1 , and is structured with an adhesive layer 9 , and in fact such that the adhesive points of the protective element 3 correspond to the screen frame dimensions of the display facility 1 . the protective element 3 is accommodated in front of the image surface 2 and thus fixed so that it completely adheres to the screen frame for instance . the protective element 3 can only cover a partial front of the display facility 1 or the entire front of the display facility 1 . if an interfering contamination of the protective element 3 occurs by blood spraying for instance , the protective element 3 can be removed from screen frames of the display facility 1 with the aid of a tab 10 , and can be replaced by a new protective element 3 .
the invention relates to a device for protecting a display facility , comprising a protective element for covering an image surface of the display facility . as the protective element is designed to be transparent and the retaining means are provided for the exchangeable arrangement of the protective element in front of the image surface , a protective device is provided , which allows the image surface to be examined and is easy to operate .