Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a warning manhole cover which mainly comprises a fixed seat, a cover body, an armored glass plate, a plurality of LED bulbs and a light-dependent resistor, wherein the cover body is arranged on the annular fixed seat; a layer of armored glass is arranged on the upper surfaces of the cover body and the fixed seat; the LED bulbs, a battery and a light-dependent resistor are arranged in the armored glass; the LED bulbs are connected in series with the light-dependent resistor. The warning manhole cover has the benefits of being simple in structure, convenient to use, good in warning effects and practical.
The invention discloses a warning manhole cover which mainly comprises a fixed seat, a cover body, an armored glass plate, a plurality of LED bulbs and a light-dependent resistor, wherein the cover body is arranged on the annular fixed seat; a layer of armored glass is arranged on the upper surfaces of the cover body and the fixed seat; the LED bulbs, a battery and a light-dependent resistor are arranged in the armored glass; the LED bulbs are connected in series with the light-dependent resistor. The warning manhole cover has the benefits of being simple in structure, convenient to use, good in warning effects and practical.
Warning manhole cover
WANG XIQUAN (Autor:in)
10.06.2015
Patent
Elektronische Ressource
Englisch