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1. 发明专利

JPS62293803A ANTENNA SYSTEM FOR VEHICLE 失效
公开(公告)号：JPS62293803A
公开(公告)日：1987-12-21
申请号：JP13746786
申请日：1986-06-13
申请人： YAGI ANTENNA , HITACHI LTD
发明人： IMAI TAKESHI , TAKAHASHI AKIRA , HARADA NOBUYUKI
IPC分类号： H01Q1/32 , H01Q1/40 , H01Q9/28
摘要： PURPOSE:To attain sufficient performance without projecting provision of an antenna at the outside of a car body by coating the surface of a metallic plate by an insulating material and arranging the coated plate at the outside of the car body. CONSTITUTION:An antenna 3 is arranged to a recess 2a formed to a car body 1 made of a metal, e.g., to the front part of a roof 2. The antenna 3 has a prescribed gap to the roof 2 and the surface of the metallic plate 3a having through holes is coated by an insulation material 3b such as an FRP and the coated plate is arranged to the gap. Thus, the car body 2 and the antenna 3 are insulated electrically, the sheath of a feeder, e.g., one end of a coaxial cable 4 is connected to the car body 1, the core is connected to the antenna 3 and the other end is connected to an antenna terminal of a receiver 5. Thus, the antenna 3 is not projected at the outside of the car body 1 and the antenna conductor offers a large area, then a sufficient induced voltage is obtained to the reception signal.

2. 发明专利

JPS5567253A SIGNAL TRANSMISSION UNIT 失效
公开(公告)号：JPS5567253A
公开(公告)日：1980-05-21
申请号：JP13987078
申请日：1978-11-15
申请人： HITACHI LTD , YAGI ANTENNA
发明人： MORIOKA MAKOTO , KURATA KAZUHIRO , KOGA YASUSHI , TAKAHASHI AKIRA , KOYAMA SATOSHI
IPC分类号： H04B10/00 , G02B7/00 , H04B10/11
摘要： PURPOSE:To improve the mobility of photography by making a signal transmission cable needless by transmitting signals from a vidicon, etc., as an infrared-ray light. CONSTITUTION:Signals from TV camera 1 pass through the signal line in support pipe 4 to operate light transmitter 2, and modulated infrared-ray light 3 is emitted from a LED. This light beam is condensed by condenser lens 5 of a light receiver and is converted to electric signals by PIN photo detector 6, and after that, this light beam is amplified by 7 and is supplied to VTR 8, etc. Further, a sure light transmission is performed by providing an automatic light tracking function in the light transmission system as well as the light receiving system.

3. 发明专利

JPS63124606A ON-VEHICLE ANTENNA SYSTEM 失效
公开(公告)号：JPS63124606A
公开(公告)日：1988-05-28
申请号：JP27048186
申请日：1986-11-13
申请人： YAGI ANTENNA , HITACHI LTD
发明人： IMAI TAKESHI , TAKAHASHI AKIRA , MINASE ATSUSHI , HARADA NOBUYUKI
IPC分类号： H01Q21/06 , H01Q1/32 , H01Q21/22 , H01Q21/24 , H01Q21/30
摘要： PURPOSE:To receive both FM/AM broadcast waves with excellent sensitivity by forming a slot to a metallic plate face arranged with an insulation gap to the outer face of the metal-made car body and connecting an outer sheath conductor grounded to the car body via a core conductor of a feeder and a middle wave band blocking capacitor to the middle of one side and the other side of the slot respectively. CONSTITUTION:An antenna 11 is arranged to a roof part 12a of a metal-made car body 12. The antenna 11 is provided with a T-shaped metallic flat plate 13 being an antenna element and slots 14a,14b are formed to the surface of the metallic flat plate 13 along each T-shaped side. In this antenna 11, the slots 14a,14b formed to the metallic flat plate 13 act like a slot antenna with respect to VHF, UHF bands, and the metallic flat plate 13 provided to the car body 12 with an insulation gap acts like a capacitive antenna to the middle wave band. Thus, a two-frequency band common use antenna is obtained to any of the AM and FM waves with excellent sensitivity.

4. 发明专利

JPS54152499A DETECTOR FOR ENTERING VEHICLE 失效
公开(公告)号：JPS54152499A
公开(公告)日：1979-11-30
申请号：JP5992478
申请日：1978-05-22
申请人： HITACHI LTD , YAGI ANTENNA
发明人： KOYAMA SATOSHI , MORIFUJI MOTOYOSHI , TAKAHASHI AKIRA , KOGA YASUSHI , KURATA KAZUHIRO , MORIOKA MAKOTO
IPC分类号： G08G1/09 , G08G1/017
摘要： PURPOSE:To miniaturize a device, and also to give an alarm on detecting easily an entering vehicle from a distance place by detecting whether or not light from an infrared-ray transmitter is reflected. CONSTITUTION:Infrared rays from a transmitter (light emitting diode) are focused into nearly-parallel rays, which lighten ''no entry'' incication panel 2. Reflecting plates 5, provided on ''no enty'' indication plates 2, are arranged at an interval of width of approximate 3m on a lane where ''no entry'' should be indicated and if a recklwss driving vehicle enters, they can change in position or fall down, thereby preventing reflected waves from striking photo detector 4. Even if the reckless drivung vehicle cuts off infrared rays, no light strikes photo detecot 4. In this case, it is detected that the light is cut off to give an alarm, so that workers during their operations can know that the vehicle has entered.

5. 发明专利

JPS54152404A INFRAREDDRAY TRANSMITTER 失效
公开(公告)号：JPS54152404A
公开(公告)日：1979-11-30
申请号：JP5992178
申请日：1978-05-22
申请人： HITACHI LTD , YAGI ANTENNA
发明人： KOYAMA SATOSHI , MORIFUJI MOTOYOSHI , TAKAHASHI AKIRA , KOGA YASUSHI , KURATA KAZUHIRO , MORIOKA MAKOTO
IPC分类号： H04B10/00 , H04B10/07 , H04B10/079
摘要： PURPOSE:To make it possible to confirm th operation of a LED easily and definitely by directly detecting the output of an infrared-ray LED emitting light by a photo detector and by displaying out its operation state. CONSTITUTION:As shown by dotted lines, LED3 radiates infrared rays at a wide angle and those radiated out are sent to a distant point after being made parallel through lens 2. In the optical system, on the other hand, photo detector 5 is arranged where the main energy beam of an infrared-ray LED arranged close by the focus can not be prevented near the LED. Consequently, the output of LED is directly detected by detector 5 and the operation state of the LED is displayed out, so that the operation of the LED can be confirmed easily and definitely.

6. 发明专利

JPS54151857A LIGHT RECEIVER OF MULTIPLEX ULTRARED SPACIAL WAVES 失效
公开(公告)号：JPS54151857A
公开(公告)日：1979-11-29
申请号：JP5992378
申请日：1978-05-22
申请人： HITACHI LTD , YAGI ANTENNA
发明人： KOYAMA SATOSHI , MORIFUJI MOTOYOSHI , TAKAHASHI AKIRA , KOGA YASUSHI , KURATA KAZUHIRO , MORIOKA MAKOTO
IPC分类号： H04B10/11 , G02F2/00 , G02F2/02 , H04B10/112
摘要： PURPOSE:To make it possible to take out the same output as that for a single wavelength, while ensuring the commonness, by mounting a plurality of ultrared light receiving optical systems to an identical table in a position adjustable manner so that the signals received may be independently amplified. CONSTITUTION:A plurality of telescopes 7 constructed to include an ultrared ray permissible type filter for allowing only a preset wavelength to pass therethrough, an ultrated wave detector 4 for covering all the ranges of the ultraed ray received, and an amplifier for covering all the ranges of the detection frequency, are adjusted in advance by a frame 8 and fixed to a table 9. The resultant assembly can be made to have its azimuth and angle to elevation finely adjusted with the use of a handle while making use of an alignment scope in a fine adjustor 10. Three ultrared rays 11 to 13 of different wavelengthes enter a telescope 71, but the ray to be detected at a terminal 61 is that which is selected to have a modulated frequency by a band pass filter 31. Since there is no fear of any interference and mixed moduation, the amplification can be taken to have a high level.

7. 发明专利

JPS63124605A ON-VEHICLE ANTENNA SYSTEM 失效
公开(公告)号：JPS63124605A
公开(公告)日：1988-05-28
申请号：JP27048086
申请日：1986-11-13
申请人： YAGI ANTENNA , HITACHI LTD
发明人： IMAI TAKESHI , TAKAHASHI AKIRA , HARADA NOBUYUKI
IPC分类号： H01Q1/32
摘要： PURPOSE:To obtain a practically sufficient reception performance without a projecting antenna part at the outside of a vehicle by arranging a plate metallic body to an outer side lower face of a car body with a gap by an insulator and connecting a feeder end to the metallic body and the car body respectively. CONSTITUTION:An antenna 11 is provided with a metallic plate 11 being an antenna element. The surface of the metallic plate 11a is coated by an insulator 11b made of a reinforced plastic such as FRP and arranged to a face of the lower part 13 of a rear trunk with a prescribed gap. That is, the car body 12 and the metallic plate 11a are insulated electrically and a core wire is connected to the metallic plate 11a, the outer conductor of one end of the feeder 14 such as a coaxial cable is connected to the car body 12 and the other end is connected to a receiver. Thus, since the the metallic plate 11a being the antenna element is arranged to the outer side face of the car body 12, the external appearance of the car body is not deteriorated and no wind break noise is caused and noise from a microcomputer in the car body and a heater or the like is shielded.

8. 发明专利

JPS62293802A ANTENNA SYSTEM FOR VEHICLE 失效
公开(公告)号：JPS62293802A
公开(公告)日：1987-12-21
申请号：JP13746686
申请日：1986-06-13
申请人： YAGI ANTENNA , HITACHI LTD
发明人： IMAI TAKESHI , TAKAHASHI AKIRA , HARADA NOBUYUKI
IPC分类号： H04B1/08 , H01Q1/32
摘要： PURPOSE:To improve the reception characteristic by connecting an antenna terminal of a reception section to a feeding end of an antenna directly and operating the reception section by an operation section placed on a driver's seat. CONSTITUTION:An antenna 12 such as A rod antenna is projected to a proper position of a car body 11, the antenna terminal of the reception section 13 is connected directly to the feeding end of said antenna, that is, the antenna 12. Further, the reception section 13 selects an object signal from the received radio wave, amplifies/detects it to obtain a low frequency output signal. Then the operation section 14 is arranged to the driver's seat, a control signal is given to the reception section 13 via a control cable 15 to operate it thereby allowing the driver to adjust the channel selection and volume control from the driver's seat. Since the feeder capacitance is eliminated entirely, an induced voltage of the antenna is led to the reception section with high efficiency without any loss.

9. 发明专利

JPS54152405A INFRAREDDRAY TRANSMITTER 失效
公开(公告)号：JPS54152405A
公开(公告)日：1979-11-30
申请号：JP5992278
申请日：1978-05-22
申请人： HITACHI LTD , YAGI ANTENNA
发明人： KOYAMA SATOSHI , MORIFUJI MOTOYOSHI , TAKAHASHI AKIRA , KOGA YASUSHI , KURATA KAZUHIRO , MORIOKA MAKOTO
IPC分类号： H04J14/00 , H04B10/114 , H04B10/524 , H04J14/02
摘要： PURPOSE:To make it possible to send many different volumes of information by arraying several LEDs at narrow intervals and by sending photo signals from respective LEDs, superposed upon the same light flux, toward the space. CONSTITUTION:On the focus of reflecting mirror 1, several LEDs 2 are arrayed at narrow intervals and radiator 3 of them is directed against reflecting mirror 1 to reflect 1 infrared rays. Then, a photo signal from each LED2 is superposed upon the same light flux and sent out to the sapce. Thus, a large quantity of infrared rays are superposed and sent out by a single optical system, thereby making it possible to send many different volumes of information.

10. 发明专利

JP2506514B2 失效
公开(公告)号：JP2506514B2
公开(公告)日：1996-06-12
申请号：JP13469291
申请日：1991-06-06
申请人： YAGI ANTENNA
发明人： TAKAHASHI AKIRA , MORIFUJI MOTOYOSHI
IPC分类号： H01Q11/08 , H01Q13/08 , H01Q21/06 , H01Q21/24

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