| 摘要 |
PROBLEM TO BE SOLVED: To provide an innovative luminous body for traffic-control sign capable of being manufactured and sold at an extremely low cost and ensuring an excellent visibility of the signal by easily retrofitting it to an existing road traffic-control signal. SOLUTION: A sensor 3 for detecting that an area around a case body 2 becomes dark is installed in the case body 2 capable of storing a power source 1 such as a battery, and a light source 4 flashed through the power source 1 by the detection activity of the sensor 3 is installed in the case body 2. Then a fixing part 5 is installed in the case body 2 so that the case body 2 can be attached to a road traffic signal. |
