| 摘要 |
A graffiti prevention apparatus for preventing application of graffiti to a surface(s). The apparatus includes a control component (11) coupled to one or more modular components (21, 31). The control component (11) has a solenoid valve (12) which is coupled to a liquid supply. A motion sensor (19) upon sensing movement near surface(s) activates the solenoid valve (12) to cause liquid to flow from a supply line (13) to spray pipes (14) so that liquid issues from spray producing nozzles (15, 16) onto the surface(s) to prevent graffiti from being applied to surface(s)
|
