Abstract: An air cleaner for vehicles includes: a case having an inlet, through which outside air is introduced, and an outlet, through which filtered air is discharged; and a filter installed in an inner space of the case, configured to filter the outside air introduced through the inlet, and including a filtration member, wherein the filtration member is formed in an “?” shape open downwards and is configured to allow the outside air to pass therethrough in a downward direction and in a lateral direction.

Abstract: A high-sensitive contactless chromaticity measuring device according to the present invention, includes: a lens unit to receive light emitted from a measurement object; a light distribution unit including an optical fiber to receive the light passing through the lens unit and distribute the received light through n paths to output the light to the other side, wherein a numerical aperture is greater than a predetermined reference value, a condensing lens to reduce an incidence angle of the light output to the other side of the optical fiber to a target angle or more, and n color filters to transmit different wavelengths of the light passing through the condensing lens; and a signal conversion unit including a photodiode to convert the light transmitted from the light distribution unit into an electrical signal.

Abstract: A method for manufacturing a waterproof felt duct may include (a) laminating a waterproof film on one side of a first nonwoven fabric and laminating a second nonwoven fabric on the waterproof film laminated on the first nonwoven fabric to form a laminated body; (b) forming a waterproof felt base material by thermally adhering the laminated body; (c) cutting the waterproof felt base material into a desired shape; (d) molding a duct while surrounding the waterproof felt base material cut into the desired shape around the external surface of a molding jig having a worm gear shape; (e) heat-treating the molded duct; (f) cooling the heat-treated duct; and (g) ejecting the cooled duct from the molding jig.

Abstract: An air cleaner for vehicles includes: a case having an inlet, through which outside air is introduced, and an outlet, through which filtered air is discharged; and a filter installed in an inner space of the case, configured to filter the outside air introduced through the inlet, and including a filtration member, wherein the filtration member is formed in an “?” shape open downwards and is configured to allow the outside air to pass therethrough in a downward direction and in a lateral direction.

Abstract: An air cleaner may include a filter case configured to introduce, by a suction force of an internal space, ambient air being discharged through a filter provided in the internal space as intake air from which foreign substances are removed; and a built-in valve built in the internal space of the filter case and configured to form an ambient air introduction path for introducing the ambient air and an additional ambient air introduction path separated from the ambient air introduction path and to open the additional ambient air introduction path so that the ambient air flows into through the additional ambient air introduction path when the suction force is increased.

Abstract: An apparatus for supporting learning of a user is provided. The apparatus extracts, from a problem image, a first layout including textual information and a second layout including illustrative information, determines a first similarity between the first layout and textual information of a second problem stored, determines a second similarity between the second layout and illustrative information of the second problem, determines a third similarity between the first problem and the second problem by combining the first similarity and the second similarity, determines whether the second problem corresponds to the first problem, and transmits information indicating an answer or solution corresponding to the second problem to the user device.

Abstract: An air cleaner is provided. The air cleaner includes an air cleaner body and air cleaner cover that are coupled to each other to form an internal space for mounting a filter and that are clamped and separated through a cover clamp. The filter purifies air that is introduced through a duct inlet into air which is to be discharged through a hose outlet. A filter fixer is formed in the internal space to seat the filter and forms a filter holding force to block swaying of the filter. Additionally, a filter adapter is mounted into or detached from the internal space and is inserted into the internal space to form a filter fixing force for fixing the filter.

Abstract: A method for manufacturing a waterproof felt duct may include (a) laminating a waterproof film on one side of a first nonwoven fabric and laminating a second nonwoven fabric on the waterproof film laminated on the first nonwoven fabric to form a laminated body; (b) forming a waterproof felt base material by thermally adhering the laminated body; (c) cutting the waterproof felt base material into a desired shape; (d) molding a duct while surrounding the waterproof felt base material cut into the desired shape around the external surface of a molding jig having a worm gear shape; (e) heat-treating the molded duct; (f) cooling the heat-treated duct; and (g) ejecting the cooled duct from the molding jig.

Abstract: An air cleaner may include a filter case configured to introduce, by a suction force of an internal space, ambient air being discharged through a filter provided in the internal space as intake air from which foreign substances are removed; and a built-in valve built in the internal space of the filter case and configured to form an ambient air introduction path for introducing the ambient air and an additional ambient air introduction path separated from the ambient air introduction path and to open the additional ambient air introduction path so that the ambient air flows into through the additional ambient air introduction path when the suction force is increased.

Abstract: A vehicle resonator includes a mounting portion provided in an air cleaner housing of a vehicle, and a resonance container mounted on the mounting portion to be replaceable in a sliding manner and having a resonance space therein communicating with an intake passage inside the air cleaner housing.

Abstract: An air cleaner is provided. The air cleaner includes an air cleaner body and air cleaner cover that are coupled to each other to form an internal space for mounting a filter and that are clamped and separated through a cover clamp. The filter purifies air that is introduced through a duct inlet into air which is to be discharged through a hose outlet. A filter fixer is formed in the internal space to seat the filter and forms a filter holding force to block swaying of the filter. Additionally, a filter adapter is mounted into or detached from the internal space and is inserted into the internal space to form a filter fixing force for fixing the filter.

Abstract: A vehicle resonator includes a mounting portion provided in an air cleaner housing of a vehicle, and a resonance container mounted on the mounting portion to be replaceable in a sliding manner and having a resonance space therein communicating with an intake passage inside the air cleaner housing.

Abstract: An antenna element includes a feeding path unit connected to a feeding point, first and second antenna main body units, and first and second short-circuit path units. The first antenna main body unit has one end connected to the feeding path unit and the other end that is opened. The second antenna main body unit has one end connected to a connection point between the feeding path unit and the first antenna main body unit and the other end that is opened. The first short-circuit path unit contributes to a resonance to a radio signal in a predetermined first frequency band, and is formed between the connection point and a ground point. The second short-circuit path unit contributes to a resonance to a radio signal in a second frequency band higher than the first frequency band, and has a path length different from that of the first short-circuit path unit.

Abstract: An antenna element includes a feeding path unit connected to a feeding point, first and second antenna main body units, and first and second short-circuit path units. The first antenna main body unit has one end connected to the feeding path unit and the other end that is opened. The second antenna main body unit has one end connected to a connection point between the feeding path unit and the first antenna main body unit and the other end that is opened. The first short-circuit path unit contributes to a resonance to a radio signal in a predetermined first frequency band, and is formed between the connection point and a ground point. The second short-circuit path unit contributes to a resonance to a radio signal in a second frequency band higher than the first frequency band, and has a path length different from that of the first short-circuit path unit.

Abstract: A charge coupled device having a CCIR/EIA mode conversion function includes: a plurality of VCCD regions formed in the direction of row, the VCCD regions having a predetermined interval from one another; a plurality of HCCD regions formed at the end of the VCCD regions in the direction of column; a plurality of photodetectors regularly arranged between the VCCD regions, the photodetectors generating signal charges according to an image signal; a plurality of vertical gate electrodes formed on the VCCD regions and the photodetectors in the direction of column, the vertical gate electrodes transmitting the signal charges of the photodetectors to the HCCD regions through the VCCD regions according to applied vertical clock signals; vertical clock signal generator for supplying a predetermined number of vertical clock signals; and a selecting portion for receiving vertical clock signals from the vertical clock signal generator, the selecting portion supplying the vertical clock signals to part of the vertical gat