| 摘要 |
PURPOSE: An air cleanliness alarming device is provided to changes activity patterns of fire flies displayed through an LED panel according to air cleanliness at multiple stages and to clearly recognize the air cleanliness of an indoor space based on the activity patterns of the fire flies. CONSTITUTION: An air cleanliness alarming device comprises an LED panel(20) and a controller(10). The LED panel includes a plurality of LEDs and displays fire files through the LEDs. The controller controls the LED panel according to air cleanliness after measuring the air cleanliness, thereby changing activity patterns of the fire flies at multiple stages. The control unit includes a sensor unit(11), an air cleanliness determination unit(12), and an LED control unit(13). [Reference numerals] (11) Sensor unit; (12) Air cleanliness determination unit; (13) LED control unit; (14) Memory; (20) LED panel; (30) Diffusion sheet; (40) Front panel; (50) Outer case;
|
