Types of emergency exit signs

On the emergency exit sign designed by 1982, Professor Yukio Ota of Tama University of Fine Arts in Japan and his team indicated that "this door can be used for escape" with a portrait running to the door. Later, in 1987, it was adopted by ISO as the emergency exit sign style, and the BS 5499 standard was also adopted. Britain, Japan, South Korea, Thailand, Norway, new york (according to LL26), Canada, People's Republic of China (PRC) (China), Taiwan Province Province of China and Hongkong all adopted this standard. European Union standard emergency exit sign styles, portraits, escape direction arrows and rectangles representing doors are clearly listed in the order of direction. Arrows can indicate the exit directions in eight directions (upward or downward means the exit is forward, left/right means the exit is left/right, and left/left bottom/right top/right bottom means the exit is left/left bottom/right bottom); The directional order of portrait, arrow and rectangle depends on whether the exit is left or right (except the front). People's Republic of China (PRC) (PRC) standard exit sign pattern (according to BS 5499 standard). Red emergency exit signs still used in some old buildings in Hong Kong. Emergency exit sign on the boarding ladder of Hong Kong International Airport. Note that the above signs in the form of light transmission are displayed in green, and the graphics and text are white; So as not to be confused with the cool colors of the outdoor environment (such as green, sky blue, blue, etc.). ) Because of the use of green, and in order to get a clearer reflection of indoor light at night, in order to get a greater color contrast, the signs posted on the glass door are represented by red characters.