An indoor unit of an air conditioning device which is installed on a wall surface of a room includes an air sending fan which sends room air from an air inlet disposed at an upper part to an air outlet disposed at a lower part of a front side; heat exchangers disposed at the upstream side of the air sending fan; and a back case which is located close to the wall surface with respect to the air sending fan and supports the heat exchangers, wherein the back case is composed of an air outlet passage wall member which forms an air outlet passage for air blown out from the air sending fan and an installation member which is located on a back side of the air outlet passage wall member and is mounted on an installation plate which is fixed on the wall surface with the air outlet passage wall member and the installation member being arranged in parallel in the front and back direction, and a first space is formed between a back surface of an air outlet passage wall of the air outlet passage wall member and the installation member.

A device for measuring floating micro-organisms and an air conditioner including a device for measuring floating micro-organisms are provided. The device for measuring floating micro-organisms may include an air flow path through which air including floating micro-organisms may flow, a first main body provided at a first side of the air flow path and having a first space and a second space, a second main body provided at a second side of the air flow path and in which a collecting portion to collect the floating micro-organisms may be provided, a light emitter provided in the first space that emits a predetermined wavelength range of light toward the collecting portion, and a light receiver provided in the second space that detects a fluorescence signal generated from light which acts on riboflavin contained in the floating micro-organisms.

In an air conditioner, an air cleaner includes a charging unit for charging particles in the air and a dust collecting unit for collecting the particles charged by the charging unit by an electrostatic force. A filter cleaning device includes a device body to house a filter for capturing dust in the air in a movable form, and a part of the device body forms a supporting part to support the air cleaner. An indoor unit body houses the filter cleaning device, and houses the air cleaner by supporting it by the supporting part.

An ultraviolet (UV) sterilization lamp, a UV sterilization module, and an air conditioner including a UV sterilization module are provided. The UV sterilization lamp may include a lamp body having an outer diameter defined by an outer surface thereof, an inner diameter defining an internal space, and a length that extends at least in a lengthwise direction of the UV sterilization lamp; an emission material that fills the internal space so as to generate at least UV rays; and an external electrode provided on the outer surface of the lamp body so as to discharge the emission material. The inner diameter of the lamp body may be at least about 0.7 mm.

An air conditioner is provided that may include a main body having an air inlet and an air outlet defined therein; a filter received in the main body to filter air suctioned into the main body; a heat exchanger configured to perform a heat exchange between a refrigerant and the air suctioned into the main body; and an ultraviolet (UV) sterilization module configured to sterilize the air suctioned into the main body. The UV sterilization module may include a porous main body in a mesh form, and a plurality of UV lamps. The porous main body may include a bent portion to allow the porous main body to conform to a shape of the heat exchanger. The main body may include a chassis, and a front frame at a front of the chassis. An inner space may be defined between the chassis and the front frame. The porous main body may be coupled to at least one of the chassis or the front frame, and the plurality of UV lamps may be arranged to be spaced from each other between the air inlet and the heat exchanger.

A ultraviolet (UV) sterilization lamp, a UV sterilization module, and an air conditioner including a UV sterilization module are provided. The UV sterilization module may include a porous frame, a portion of which may be a mesh so as to allow a fluid to pass therethrough; a plurality of UV lamps provided on the mesh of the porous frame and including an external electrode on an outer surface thereof; a power supply connected to the plurality of UV lamps to supply power to the plurality of UV lamps; and a plurality of fixing portions configured to support the plurality of UV lamps and fixed to the porous frame. The plurality of fixing portions may be arranged to be spaced from each other such that the plurality of UV lamps may be arranged with a constant spacing. The constant spacing may be a shortest distance of about 8 cm or less to connect outer peripheral surfaces of the plurality of UV lamps adjacent to each other.

An ultraviolet (UV) sterilization module and an air conditioner including a UV sterilization module are provided. The UV sterilization module may include a porous main body; a plurality of UV lamps having external electrodes; a plurality of conductive holders connected to the external electrodes and that supports the plurality of UV lamps to be spaced from the porous main body; and at least one bus bar connected to the plurality of conductive holders and provided between the plurality of conductive holders and the porous main body.

An air conditioner is provided that may include a main body having an air inlet and an air outlet; a filter received in the main body to filter air; a heat exchanger configured to allow heat exchange between a refrigerant and air suctioned into the main body; and a lamp module configured to radiate ultraviolet (UV) rays and infrared (IR) rays to the heat exchanger. The lamp module may include a porous main body, a plurality of UV lamps, and a plurality of IR lamps. The plurality of UV lamps and the plurality of IR lamps may be arranged in parallel on one surface of the porous main body at predetermined intervals.

A sterilization air conditioner is provided in this disclosure, which includes an indoor unit and a sterilization device. The sterilization device is arranged on the indoor unit, and the sterilization device is configured for sterilizing the air entering the indoor unit and a body of the indoor unit by releasing chemical. In view of a structure of the air conditioner, a front end of a filter screen of the air conditioner is equipped with a disinfectant dripping, spraying, sprinkling, misting or atomizing sterilization device, and disinfectant is sprayed to the air conditioner for sterilization. The disclosure has advantages of simplicity, convenience and low investment, and is more suitable for sterilization of household split air conditioners and central air-conditioning fan-coil air conditioners.

An ultraviolet irradiation unit is attachable to an air conditioner including an indoor unit having an indoor fan and an air conditioning control unit that controls an operation of the indoor unit, and the ultraviolet irradiation unit includes a light source that irradiates the indoor unit with an ultraviolet ray, and a light source control unit that is capable of communicating with the air conditioning control unit and controls an operation of the light source, in which the light source control unit turns on a power source of the light source when receiving a first signal transmitted from the air conditioning control unit.