Sanyo Electric Co., Ltd.

Yoshitaka Hara

Masashi Takazawa

Kiyondo Kobayashi

Akira Okonogi

Masahiro Kobayashi

Fujio Suzuki

Wazoh Yamada

Fusao Terada

Takashi Kawanabe

Hideaki Mukaida

Atuyumi Ishikawa

Takashi Odaira

Shigeyoshi Arie

Shouji Tunekawa

Katuji Wakabayashi

Nobuaki Takai

Yoshinori Tohya

Masanori Gotoh

Precision in adjustment of filtering characteristics of a high frequency device is improved by providing a high frequency device comprising a first filter, a frequency converter, and a second filter. The high frequency device comprises a high frequency filter for extracting signal components in a predetermined frequency band from an input signal; a frequency converter for converting frequency of the signal components extracted by the high frequency filter; and an intermediate frequency filter for extracting signal components in a predetermined frequency band from the signal components, the frequency of which is converted by the frequency converter. The high frequency device further comprises a bypass circuit provided in parallel to the intermediate frequency filter downstream of the high frequency filter; and a switching mechanism including a switching circuit for switching connection of a signal path downstream of the high frequency filter to either the intermediate frequency filter or the bypass circuit. Because the intermediate frequency filter can be in a disconnected state while the high frequency device is in adjustment operation, effects of the intermediate frequency filter on adjustment can be suppressed.

High frequency device

A solar battery indicator apparatus utilizing a capacitor for accumulating electrical power generated by the solar battery and light emitting diodes for emitting light on the basis of the electrical power supplied from the capacitor. An indicator body makes a prescribed indication on its front surface through the use of optical fibers. Several bundles of optical fibers are utilized with each bundle being associated with a plurality of optical fibers having one of their ends disposed to face an associated one of the light emitting diodes and the other end of each of the bundles of fibers being associated with a particular indicator. The configuration of optical fiber bundles utilize a control portion for controlling light emitting states of respective individual light emitting diodes. In another aspect a bundle of optical fibers have their connection to a light emitting diode such that the light emitting diode and the connection is positioned substantially in the center portion of a sign indicator controlled by the light emitting diode so that the curvature of the individual optical fibers is within a range for optimal light transmission.

Solar battery type indication apparatus

Signpost

In a heat exchanger comprising a number of multilayered fins, and a refrigerant pipe arranged in the meandering form in the fins, and an air conditioner having the heat exchanger, each of the fins has a corrugated portion formed in an air-flow direction thereon, which has at least two wavelike portions for producing a turbulent flow of air having such strength that a temperature boundary layer of the air is broken, but resistance against to the air flow is not excessively high. Each wavelike portion may be designed to have a triangular section or a trapezoidal section, and a flat portion may be disposed between the wavelike portions.

Heat exchanger having corrugated fins and air conditioner having the same

An air-conditioning system including an air conditioner incorporating a heat exchanger and a fan therein, and duct assembly connecting to the air conditioner for supplying conditioned air to a specific room equipped with the air conditioner and to another room, the duct assembly comprising an auxiliary duct removably attached to a front cover of the air conditioner and a main duct separably connected to the auxiliary duct to extend from the specific room to said another room and having air outlet portions for supplying air to the respective rooms, the auxiliary duct having an air channel for guiding the air discharged from the air outlet of the front cover into the main duct.

Wall mounted air conditioner with dischargers in separate rooms

Growing community of inventors

Gunma, Japan

Yoshitaka Hara