| 摘要 |
<p>PURPOSE: To provide a speed reduction display device to call the attention of the following vehicles, when the vehicle reduces the speed suddenly in the speed reduction using no brake. CONSTITUTION: When the speed of the vehicle is reduced, a light is emitted by an operating apparatus utilizing an inertial movement, or by a structure of using an electric switch, in this speed reduction display device, and it is operated to inform the speed reduction when an inertia is generated. The display board is formed to put up a massage or a commertial notice, or to install an interesting design simply.</p> |
