| 摘要 |
<p>When folded up for storage, the parts are designed to engage mutually with each other in such a way that the upright part lies on top of the warning symbol. The upright part can have the form of an open sided container to hold the warning part when the board is in storage. One side of the warning part which is opposite the side with the warning symbol can form a lid for the open side of the container when the board is in storage. Arrangements of pegs and notches which can be engaged with one another are provided between the two parts in order to hold the board in its erected position. The device is esp. for use as a road warning sign and is typically a flourescent triangle.</p> |
