| 摘要 |
The present invention combines an air freshener (100) that has a source (50) of air freshening chemical with a fan (120) that is controlled either by an optical device (110) that senses light or a motion detector. When a light is turned on or motion is detected, the fan (120) will be activated for a predetermined time period. In certain embodiments, the fan (120) will stop turning after a predetermined time. Alternatively, the fan (120) can continue to be powered until the light source is turned off, or all motion ceases, and only then either immediately shut down, or shut down after a predetermined time period. In certain preferred embodiments the source (50) of air freshening chemical is disposed beneath the fan and allows fragrance to be delivered over time without the fan (120). The additional airflow provided by the fan (120) causes more volatile fragrance chemicals to be removed from the source of air freshening chemical and admitted into the environment. The fan motor (124) of the present invention is driven by a power source (130), such as batteries, AC line current or alternate sources such as solar cells. Preferably, a microprocessor controls the fan (120) so that a "burst mode" is created by controlling the frequency and intensity of the pulses of air freshener that are emitted. <IMAGE>
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