| 摘要 |
<p>PURPOSE:To make it possible to automatically change over load devices, by providing a rotary magnet adapted to be rotated in association with an axle, and a rotor arranged rotatably about its center axis as a rotating center so that a switching means is changed over when the rotation of the rotary magnet is stopped while the rotor is located at a predetermined position. CONSTITUTION:During an automobile running, when a rotary magnet 39 associated with an axle is rotated to displace a rotor 40, no light rays from a light- emitting diode 46 is reflected from a reflector 47 so that a light receiving element 48 is turned off. Accordingly, a switch 11 in an automatic flashing relay circuit 9 is turned off, and therefore, transistors Tr14, Tr15 are turned on and off, respectively. Therefore, both stationary contacts 10b, 10c in an automatic flashing relay 10 are closed so that headlights 1 and side marker lamps 2 are turned on. When an automobile is stopped, the rotary magnet 39 is stopped. Accordingly, the rotor 40 is returned to a predetermined position by means of a spring 42, resulting in turn-on of the light receiving element 48, and therefore, the transistors Tr14, Tr15 are turned off and on, respectively so that a lighting relay switch is turned off, thereby the headlights 1 and the side marker lamps 2 are turned off.</p> |
