| 摘要 |
PURPOSE:To automatically control the working lamp of a construction machine according to the brightness on the periphery. CONSTITUTION:A working lamp is installed on the boom 5 of a front working mechanism, and light is irradiated toward the peripheral part, having the region where work is carried out actually as center, and a working lamp 11 which irradiates light toward the front part of the vehicle is installed in the vicinity of the driver's room 3 of an upper part turning body 2. In order to control the working lamps 10 and 11, an illuminance sensor 20a is installed at the front part on the roof of the driver's room 3, and an illuminance sensor 20b is installed at the position nearly symmetrical to the illuminance sensor 20a, for the turning center of the upper part turning body 2, and each illuminance signal supplied from the illuminance sensors 20a and 20b is inputted into a controller, and each turning-ON/OFF of the working lamps 10 and 11 and the adjustment for the supplied voltage are carried out, and the lighting with the proper light quantity for the working region is enabled. |
