| 摘要 |
PURPOSE: An audio cone module is provided to be capable of improving the reliability for a safety device. CONSTITUTION: A safety device(10) comprises at least one sensor(12) for detecting the existence of an object and a warning system(14) for supplying at least one voice message after detecting the object. The safety device further includes a control system capable of selecting at least one out of a plurality of voice messages. Preferably, the safety device is portable. Preferably, the safety device further includes a support structure. Preferably, the support structure include a safety cone type structure. Preferably, the safety device is capable of attaching at a predetermined position. Preferably, the sensor includes a plurality of detecting devices.
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