Sankei Giken Kogyo Co., Ltd.

Ryuho Ikemasu

Hiroyuki Kobayashi

Shinpei Yamamoto

Takamasa Enomoto

Makoto Takakusaki

Disclosed is a radomefor vehicle-mounted radar devices including a base bodyhaving an electromagnetic wave permeable substrateand a heater wirelaminated on an inner surface side of the substrateand wired in a surface direction of the substrate, in which linear portionsof the heater wireare arranged side by side at intervals in the surface direction of the substratein an electromagnetic wave irradiation region R of the substrate, and a surface occupancy ratio of the linear portionsof the heater wirein the electromagnetic wave irradiation region R of the substrateis set to 1% or more and 24% or less. It is possible to exhibit a practical snow-melting function as a radome for vehicle-mounted radar devices while suppressing attenuation of electromagnetic waves irradiated by a vehicle-mounted radar device within an allowable range.

Radome for vehicle-mounted radar device, and vehicle-mounted radar structure

A radome for on-board radar devicesis provided with heater wireswired in parallel so as to be separated from each other in a plane direction of an electromagnetic-wave-transmitting base member. A line pitch d of the heater wiresarranged in parallel in an electromagnetic-wave transmission region R of the base member is set to 0.2 to 2.5 times a wavelength of electromagnetic waves of the radar of an on-board radar device. A surface occupancy rate of the heater wiresarranged in parallel in the electromagnetic-wave transmission region R of the base member is set to be greater than 10% to 35%. The present invention provides a radome for on-board radar devices with which it is possible to obtain an electromagnetic-wave transmission property required of a radome, and to melt snow satisfactorily with a high heater performance.

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Tokyo, Japan

Ryuho Ikemasu