Booster device for aroma display

A booster device for an aroma display, the aroma display including a columnar shape with first and second surfaces and a side surface, the first surface including an emitting opening to emit a scent, and a wind source to emit the scent to an exterior of the aroma display is provided in the aroma display, a maximum air flow generated by the wind source being substantially equal to or smaller than a predetermined value, the booster device comprising:

• a housing detachably accommodating the aroma display;
• and
• a fan provided in the housing to generate a maximum air flow that is larger than the predetermined value;
• wherein
• the housing includes a cylindrical outer housing including a bottom surface with an air inlet to take in air and a cap with an opening, and a holder to hold the aroma display in the housing with the emitting opening of the aroma display facing the opening;
• the holder holds the aroma display to define an air passage between the outer housing and the aroma display;
• the fan is provided in the housing to blow out air to the air passage;
• and
• the cap includes a conical or substantially conical structure to narrow the air flow generated by the fan, provided at an end portion of the outer housing on a side of the first surface of the aroma display.