backlightboard
nounUK /ˈbæklaɪtbɔːd/
US /ˈbæklaɪtbɔːrd/
A board that has a light behind it so you can see it in the dark.
The bus stop sign uses a backlightboard so people can read it at night.
OTHER MEANINGS
2. A teaching board with a light behind it for showing pictures or writing.
The teacher put the drawing on the backlightboard for the class to see.
3. A screen or panel in a car or machine that lights up from behind.
The backlightboard on the dashboard showed the speed clearly at night.
4. A sign or menu board that glows from behind so it is easy to read.
The café's backlightboard listed the specials in bright letters.