HAMANAKODENSO CO., LTD.
|HAMANAKODENSO CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20130315418||VEHICLE APPROACH NOTIFICATION UNIT - A vehicle approach notification unit produces a notification sound outside a vehicle when a predetermined driving condition is met to notify an approach of the vehicle. The vehicle approach notification unit has a cavity portion and a small speaker. The cavity portion is disposed to a component of the vehicle and has a sound space therein. The small speaker directly produces the notification sound including an audible frequency. The small speaker is disposed at the cavity portion and emits the notification sound into the sound space of the cavity portion. The cavity portion has a diaphragm or a sound outlet that emits the notification sound from the sound space of the cavity portion outside the vehicle.||11-28-2013|
|20130314224||VEHICLE APPROACH NOTIFICATION UNIT - A vehicle approach notification unit disposed in a vehicle for producing a notification sound outside of the vehicle includes a small speaker producing the notification sound having an audible frequency. The small speaker is disposed on a sound tube of a horn of the vehicle, the horn producing a warning sound. The small speaker emits the notification sound into the sound tube, such that the notification sound is emitted from the vehicle via the sound tube. The small speaker is located in a midstream in a sound passage of the sound tube.||11-28-2013|
|20130269661||VAPOR FUEL TREATMENT APPARATUS - A control part conducts a pulse width modulation control for a first valve and a second valve in a manner that a sum of a first flow rate of fluid flowing through a first passage and a second flow rate of fluid flowing through a second passage agrees with a target flow rate. When the target flow rate is less than a sum of the maximum of the first flow rate and the maximum of the second flow rate, the control part controls a control timing of a first signal driving the first valve and a control timing of a second signal driving the second valve to be different from each other.||10-17-2013|
|20130265150||VEHICLE APPROACH NOTIFICATION UNIT - A vehicle approach notification unit is mounted to a sound tube of an electromagnetic warning device producing a warning sound, and includes a dynamic speaker that produces a notification sound notifying a presence of a vehicle. The dynamic speaker is mounted to the sound tube and outputs the notification sound through the sound tube to outside of the vehicle. The sound tube has a warning sound outlet at an end of the sound tube and a through hole at a position different from the warning sound outlet.||10-10-2013|
|20130008413||EVAPORATED FUEL PURGE DEVICE - An evaporated fuel purge device integrally includes a main passage, a fuel inlet passage, a fuel outlet passage, an ejector, an air inlet passage, and an air outlet passage. Evaporated fuel flows into the main passage through the fuel inlet passage, and flow out of the main passage through the fuel outlet passage. Intake air flows into the ejector from a downstream of a turbocharger through the air inlet passage, and flows out of the ejector to an upstream of the turbocharger through the air outlet passage. At least three of the fuel inlet passage, the fuel outlet passage, the air inlet passage, and the air outlet passage are arranged to extend parallel with each other.||01-10-2013|
|20120194328||VEHICLE APPROACH WARNING APPARATUS - A vehicle warning apparatus has a vehicular horn disposed in an overlapping arrangement with a supersonic speaker, such that the vehicular horn is positioned between the supersonic speaker and a heat exchanger. The vehicular horn blocks the supersonic speaker from heat produced by the heat exchanger, which prevents the temperature of the supersonic speaker from increasing. Accordingly, troubles such as frequency change of supersonic wave output from the speaker and/or decrease of speaker's product life, without deteriorating heat dissipation capacity of the heat exchanger, are prevented. Furthermore, collective arrangement of the supersonic speakers on a single board attached on the vehicular horn improves the install-ability of the vehicle warning apparatus in the vehicle, and improves the directional reach of the supersonic wave.||08-02-2012|
|20120182138||VEHICLE PRESENCE NOTIFICATION APPARATUS - A vehicle includes a front grille and a vehicle presence notification apparatus that includes a supersonic speaker, where the vehicle presence notification apparatus is behind the front grille. The front grille includes a plurality of grille bars that may be in a front range of the supersonic speakers. The grille bars that are positioned in the front range of the supersonic speaker includes a curved convex and an upper plate, which have a substantial U shape cross section. The supersonic wave is reflected on an inside surface of one grille bar in a downward direction, and is reflected again on an outside surface of an adjacent grille bar in a forward or frontal direction to output toward a front field of the vehicle.||07-19-2012|
|20120182137||VEHICLE WARNING APPARATUS - A vehicle warning apparatus may include a supersonic speaker for outputting a supersonic wave that is equipped in a parametric speaker. The supersonic speaker includes a supersonic vibrator that generates a supersonic wave. A waterproof sheet and louver is arranged to cover a speaker opening in order to protect the supersonic vibrator from water and other foreign particles. Specifically, the waterproof sheet is arranged to cover the speaker opening at a distance L||07-19-2012|
|20120182136||VEHICLE APPROACH WARNING APPARATUS - A vehicle (approach) warning apparatus generates a warning sound that is emitted from a parametric speaker and a vehicle horn, by driving the vehicle horn with a rectangular wave signal of 0 volts or more, thereby preventing a power loss due to a counter electromotive force that is caused by an alternation of a plus electric voltage and a minus electric voltage in the horn as well as preventing a problematic distortion of the warning sound from the horn. Further, since the vehicle (approach) warning apparatus is devised to prevent the parametric speaker from generating a low pitch sound of 500 Hz that is reproduced by the horn, an influence of a higher harmonic wave upon a reproduced sound from the parametric speaker is reduced, thereby preventing deterioration of a sound from the parametric speaker.||07-19-2012|
|20100119096||Electrical horn - An electrical horn includes a horn housing, an oscillation member located at the horn housing to generate a sonic wave, and a resonance tube in which the sonic wave generated by the oscillation member flows. In the electrical horn, the resonance tube has a plurality of sonic outlet portions that are open in different directions. Accordingly, when the electrical horn is mounted to a vehicle, it is possible to reduce an amount of foreign material entering into the resonance tube while increasing a sonic pressure toward a vehicle front side.||05-13-2010|
Patent applications by HAMANAKODENSO CO., LTD.