| 摘要 |
An extendable and/or retractable illuminating device comprises a luminaire atop a telescoping mast, which is selectively positionable between extended and retracted positions, suitable for use as a warning signal. The luminaire has a strobe feature and its intensity is capable of automatic adjustment in response to ambient light levels. The telescoping mast, and thus the luminaire, are driven by an electric motor within a manually portable case, which also houses a rechargeable electrical power supply and microcontroller unit for providing power and operating commands to the luminaire. |
