Abstract: An air purifier may include: a first body including a case having an inlet and an outlet, and a fan disposed inside the case; and a second body coupled to a top of the first body and including a central portion and an outer edge surrounding the central portion, wherein the second body includes: a lower body coupled to the first body; a cover disposed over the lower body; and an upper body disposed between the lower body and the cover, the upper body having a greater height at a portion thereof that corresponds to the outer edge than at a portion thereof that corresponds to the central portion, thereby allowing water, penetrating into the second body, to be collected.

Abstract: An air purifier includes a first body having an inlet formed in a circumferential surface and an outlet formed above the inlet; a fan rotatably disposed between the inlet and the outlet to form an air flow from the inlet to the outlet; a filter for removing foreign substances in air flowing into the inlet; and a second body disposed above the first body and guiding air discharged from the outlet radially outward. The second body includes: a lower cover fixedly disposed at the first body and extending radially outward in an upward direction from the outlet to guide the air discharged from the outlet; and a top cover detachably disposed above the lower cover and forming a flat surface. A protrusion is formed in a bottom surface of the lower cover and protruding downward.

Abstract: An air cleaner according to the present disclosure includes: a first body having an inlet and an outlet; a filter disposed inside the first body and facing the inlet; a blower fan disposed between the inlet and the outlet inside the first body; a blower motor disposed inside the first body and configured to rotate the blower fan; and a second body coupled to an upper side of the first body and extending along a lateral direction, wherein the second body includes an indicator configured to display an operation state, wherein the indicator has a lamp configured to emit light and a lamp housing in which the lamp is disposed, and wherein the lamp housing has a groove to allow light emitted by the lamp to pass through.

Abstract: An air purifier may include: a first body having an inlet and an outlet that is open upward; a fan disposed inside the first body and below the outlet; and a second body coupled to the first body and disposed above the outlet, wherein the second body includes: a lower body connected to the first body, and a lower wall extending toward an outside of the first body in a direction crossing an up-and-down direction above the outlet, so that air discharged from the outlet may be guided by the lower wall.

Abstract: The disclosure relates to an electronic device for measuring a bio-signal and a method for operation in the electronic device. The method includes obtaining a first impedance value, based on a first group of electrodes of the electronic device being in contact with a first portion of a human body, and a first region of a second portion of the human body being in contact with two electrodes among a second group of electrodes included in the electrode module according to a first measurement posture of a user, obtaining a second impedance value, obtaining a correction value and storing the correction value in a memory, and obtaining a corrected first impedance value by applying the correction value to the first impedance value.

Abstract: An intermeshing rotary-wing aircraft comprises a first rotary blade portion including a first blade and a second blade, a second rotary blade portion including a third blade and a fourth blade, a first shaft and a second shaft that transmit power to the first rotary portion and the second rotary portion and are symmetrically positioned at a predetermined angle, a first swash plate portion for controlling the first blade and the second blade, and a second swash plate portion for controlling the third blade and the fourth blade, wherein the first swash plate is coupled to three linkages, in which the coupled positions are located at the vertices of an equilateral triangle, the second swash plate has the same shape as the first swash plate, and the two equilateral triangles of the first swash plate and the second swash plate are star-shaped when horizontally moved and overlapped.