| 摘要 |
PURPOSE:To provide a bus interior lighting system which executes an illumination having cool feeling when outside temperature is high and that having warm feeling when it is low by providing a daytime lighting control circuit to changingly control a changeover circuit to a set-up color according to the detected temperature of a temperature sensor when the output of an illuminance sensor is above fixed value. CONSTITUTION:A daytime lighting control circuit 6 takes in brightness outside a car detected by an illuminance sensor 4, and a lighting switch 2 is then operated to light a standard color illuminating lamp 15. When the daytime lighting control circuit 6 is above 2 fixed value, the detected output of a temperature sensor 5 is taken in from the value of the illuminance sensor 4, and a change- over circuit 3 is controlled according to the above detected output. The color sending unit 3b of the change-over circuit 3 inputs one of the illuminating lamps having each previously set up color into a lighting unit 8. Namely, the illuminating lamp pertinent to the above matter among an orange colored illuminating lamp 1a, a white colored one 1b and a blue colored one 1c is lighted. In this case, a color selecting switch 3a automatically selects the pertinent color according to temperature outside a car. |
