| 摘要 |
<p>A miniature negative-ion air purifier comprising a housing, a circuit board fixed within the housing and used for generating negative ions, and an indicator light provided on the circuit board and used for indicating work states of the miniature negative-ion air purifier. Because the circuit board of the miniature negative-ion air purifier is provided with the indicator light used for indicating the work states of the miniature negative-ion air purifier, the indicator light is lit up when the miniature negative-ion air purifier is working, and the indicator light is dimmed when the miniature negative-ion air purifier is not working, the work states of the miniature negative-ion air purifier can be observed conveniently, thereby facilitating use.</p> |
