Honda Electronics Co., Ltd.

Shuichi Sano

Kenji Nagareda

Yoshiki Katayama

Shigeo Yamamoto

Kazuki Higuchi

Kimihiro Kusuno

The present invention provides an attachment for an ultrasonic-wave transmitter/receiver that can be used by changing directivity characteristics according to the situation, even if there is only one ultrasonic-wave transmitter/receiver. The attachmentto be attached to the ultrasonic-wave transmitter/receivercomprises an acoustic lens, a holding member, and horizontal maintenance means. The acoustic lenshas a flat surfaceand a convex surfacelocated on the opposite side. The holding memberholds the acoustic lenswith the flat surfacefacing upward as well as detachably holds the ultrasonic transducer, so as to acoustically connect the acoustic radiation surfaceto the flat surface. The horizontality-maintaining meanshorizontally maintains the ultrasonic-wave transmitter/receiveand the acoustic lens

Attachment for ultrasonic-wave transmitter/receiver

The objective of this invention is to provide an ultrasonic-wave transmitter/receiver fish-finder that stabilizes its balanced state while in water to transmit ultrasonic waves vertically downward, thus improving detection accuracy. The ultrasonic-wave transmitter/receiverincludes an ultrasonic transducerthat transmits and receives ultrasonic waves; a hanging-bell shaped casethat houses the ultrasonic transducer; and a cablethat suspends the case. A weightis arranged above the ultrasonic transducerprovided at the bottomof the case. In addition, the filler Ais filled into the casesuch that a cavity Ais secured in the upper region of the case

Ultrasonic-wave transmitter/receiver

The flasher-type multi-frequency fish finder includes a wideband ultrasonic transducer, a display-rotating disk, a motor and a control device. The plurality of display LEDs are composed of the first, second and third display LEDs. The control device has a signal-separating and obtaining part and a light-emission signal-producing part. The signal-separating and obtaining part separates the reflected signal and obtains the first reflected signal corresponding to the high frequency, the second reflected signal corresponding to the medium frequency, and the third reflected signal corresponding to the low frequency. The light-emission signal-producing part generates first, second and third light-emission signals based on the first, second and third reflection signals, respectively. The first, second and third annular-display regions are concentrically set on the display surface. Underwater detection results by high frequency, medium frequency and low frequency ultrasonic waves are simultaneously indicated by a flashing light in the first, second and third annular-display regions.

Flasher type multi-frequency fish finder

A flasher type fish sonar includes a front case in which a display window is formed in front, a rotary disc opposite to the display window rotated by a motor, an ultrasonic transducer for transmitting ultrasonic waves in the water by a control portion and for receiving reflected signals in the water, a display signal transmitting portion for transmitting reflected signals received by the ultrasonic transducer and display data forming formed by the control portion and for transmitting the same to the rotary disc, a display control portion attached to the rotary disc, a fish sonar display portion displayed by light emitting diodes attached near an edge of the rotary disc, and a letter illustration numeral display portion displayed by light emitting diodes inside of center portion of the rotary disc.

Flasher type fish sonar

A flasher type fish sonar includes a front case with a transparent display window, a signal transmitting element at a center thereof, a connecting base board having a first timing detecting portion mounted thereto, a signal receiving element mounted opposite the signal transmitting element, a receiving coil mounted at a periphery of the signal receiving element, a display LED attached opposite the display window, a display rotary disc having a second timing detecting portion mounted opposite the first timing detecting portion and near the display LED, an electric power transmitting coil mounted to the connecting base board opposite the receiving coil, a main base board fixed to the connecting base board and a motor on the main base board for rotating the display rotary disc, such that a a water surface, reflected echos of fishes and a water bottom of the sea are displayed in the display window.

A fish type sonar includes a signal transmitting portion having an output connected to an A/D converter, a timing generating portion having an output connected to the signal transmitting portion and the A/D converter, the A/D converter having an output connected to a first buffer memory, the first buffer memory having an output connected to a display signal transmitting portion and a sea bottom detecting portion, the sea bottom detecting portion having an output connected to a display data forming portion, the display data forming portion having an output connected to a second buffer memory, the second buffer memory having an output connected to the display signal transmitting portion, the display signal transmitting portion having an output connected to the display portion of the fish sonar and the portion for displaying the letters, the sea surface, the fish and the sea bottom.

Growing community of inventors

Toyohashi, Japan

Shuichi Sano