WO2011099423A1 - Window-embedded antenna for vehicle - Google Patents

Window-embedded antenna for vehicle Download PDF

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Publication number
WO2011099423A1
WO2011099423A1 PCT/JP2011/052310 JP2011052310W WO2011099423A1 WO 2011099423 A1 WO2011099423 A1 WO 2011099423A1 JP 2011052310 W JP2011052310 W JP 2011052310W WO 2011099423 A1 WO2011099423 A1 WO 2011099423A1
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WO
WIPO (PCT)
Prior art keywords
antenna
glass
horizontal
feeding point
vics
Prior art date
Application number
PCT/JP2011/052310
Other languages
French (fr)
Japanese (ja)
Inventor
浩 向井
伸吾 田所
Original Assignee
セントラル硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by セントラル硝子株式会社 filed Critical セントラル硝子株式会社
Publication of WO2011099423A1 publication Critical patent/WO2011099423A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Definitions

  • the present invention is for FM radio broadcast waves provided in the margin of an automobile window glass or FM multiple broadcast waves for ITS (Intelligent Transport Systems) such as VICS (Vehicle Information Communication and Communication System). It is related with the glass antenna suitable for receiving.
  • ITS Intelligent Transport Systems
  • VICS Vehicle Information Communication and Communication System
  • ITS Intelligent Transport Systems
  • traffic jam information traffic jam information
  • construction information construction information
  • accident / failure vehicle information FM multiplex broadcasting stations for ITS
  • VICS VICS
  • ITS FM multiplex broadcast waves such as VICS are multiplexed with FM radio broadcast waves broadcast in a frequency band of 76 to 90 MHz in Japan and in a frequency band of 88 to 108 MHz outside Japan. For this reason, conventionally, in order to receive FM multiplex broadcast waves for VICS, there are many cases where reception is also performed using an antenna for receiving FM radio broadcast waves, and the received signals are distributed to receive FM radio broadcast waves. It is often used for receiving FM multiplex broadcast waves for VICS.
  • an antenna device for receiving FM multiplex broadcast waves for VICS is provided on a window glass of an automobile
  • a received signal of an antenna conductor 6 is FM multiplexed via a buffer circuit 8.
  • the AGC signal is sent to the broadcast receiver 15, and the received signal is sent to the AGC signal transmission type radio 17 via the buffer circuit 8 and the AGC input circuit 12.
  • the AGC signal from the AGC signal transmission type radio 17 is sent to the AGC input circuit 12.
  • An automotive glass antenna device is described that receives a broadcast of different reception frequencies at the same time by sending it to an AGC input (Patent Document 1).
  • an antenna that receives a VICS radio wave is provided on the front glass, and an antenna that receives an FM radio wave is provided on the rear glass so as to be separated from each other via a roof.
  • a vehicle-mounted antenna device is described in which reception performance does not deteriorate even if FM radio waves and FM radio waves are received simultaneously (Patent Document 2).
  • Patent Document 1 receives FM radio broadcast waves and VICS radio waves having different reception frequencies using an antenna provided in the upper margin of the defogger in the vicinity of the defogger as a dual-purpose antenna, and FM radio broadcast waves and VICS When distributing to each of the radio waves, the circuit provided between the antenna and the tuner prevents the signal level of each radio wave from being reduced.
  • the antenna pattern provided on the glass surface reduces the signal level of the radio wave. It is not meant not to let you.
  • a mouth-shaped main VICS antenna is provided on the upper side of the windshield, and an eye-shaped sub VICS antenna is provided in the upper margin of the defogger of the rear window glass.
  • the present invention has such problems, that is, an FM multiplex broadcast wave antenna for VICS provided on the rear window glass of an automobile, improves sensitivity, flattens frequency characteristics, and decreases antenna sensitivity in directivity characteristics. It is intended to suppress and improve.
  • the feeding point provided on the glass surface near the upper side of the opening of the body flange extends from the upper side of the flange.
  • a first element that extends in a substantially horizontal direction along the vertical line, a vertical line that branches downward from a middle portion of the first element, or that extends downward from the feeding point, and a horizontal line that is connected to the lower end of the vertical line.
  • a glass antenna for a vehicle comprising: a second element comprising a strip, wherein the horizontal strip of the second element is close to the uppermost conductive heating horizontal strip and capacitively coupled.
  • the antenna is an antenna that receives FM multiplex broadcast waves for FM radio broadcast waves in Japan and overseas, or for VICS (Vehicle Information Information and Communication System). It is the above-mentioned glass antenna for vehicles.
  • the present invention is characterized in that the first element is provided along the both sides and the lower side of the high-mount stop lamp provided so as to be inscribed in the middle portion of the upper side of the opening of the body flange.
  • This is a vehicle glass antenna.
  • the length from the feeding point of the first element to the tip of the U-shaped line and the feeding point of the first element to the tip of the horizontal line passing through the vertical line of the second element is ⁇ / 4 ( ⁇ : wavelength reduction rate of glass, ⁇ : wavelength of intermediate frequency of received radio wave).
  • the present invention is characterized in that a conductive material is printed on a transparent resin film or sheet having an adhesive surface, or the antenna formed by a thin metal wire is attached to a glass plate surface of an automobile. It is a glass antenna for vehicles in any one of the above-mentioned.
  • the antenna provided on the rear window glass of the automobile as an antenna dedicated to FM multiplex broadcast waves for VICS, even if it is a single antenna, the reception sensitivity can be improved, the frequency characteristics can be flattened, and the antenna in the directional characteristics Stable reception gain can be obtained by suppressing the drop in sensitivity.
  • the front view of the antenna pattern of Example 1 of this invention The front view of the antenna pattern of Example 2 of this invention.
  • the antenna of the present invention is an antenna provided in an upper margin of a plurality of conductive heating horizontal filaments 4 provided on a rear window glass 1 of an automobile, and an upper side of an opening of a body flange 3.
  • a first element 10 extending in a substantially horizontal direction along the upper side of the opening of the body flange 3 from a feeding point 6 provided on a nearby glass surface, and a vertical filament that branches downward from a middle portion of the first element 10 21 or a second element 20 consisting of a horizontal line 22 connected to the lower end of a vertical line 21 extending downward from the feeding point, and the horizontal line 22 of the second element 20 is located on the uppermost side. It is made to adjoin to the heating horizontal filament 4.
  • the horizontal line portion provided in the vicinity of the body flange 3 of the first element 10 of the antenna of the present invention was provided close to the inside of the upper side of the body flange 3 at an interval of at least 10 to 30 mm, and was capacitively coupled.
  • the second element 20 is also capacitively coupled close to the conductive heating horizontal filament 4 located on the uppermost side at an interval of 10 mm.
  • the antenna is used for FM radio broadcast waves in Japan with a frequency of 76-90 MHz, FM radio broadcast waves outside Japan with a frequency of 88-108 MHz, or ITS (Advanced Traffic System) such as VICS (Road Traffic Information System). It is used for the sole purpose as an antenna for receiving the FM multiplex broadcast wave.
  • ITS Advanced Traffic System
  • VICS Road Traffic Information System
  • the same pattern antenna can be adopted.
  • a horizontal filament it is good to adjust a filament length with the wavelength of the intermediate frequency of each frequency band.
  • the wavelength of the VICS frequency 76 to 90 MHz in Japan is approximately 18% longer than the wavelength of the VICS frequency 88 to 108 MHz outside Japan. This is because the center frequency of the VICS band outside Japan is approximately 18% higher than the center frequency of the VICS band in Japan.
  • a high mount stop lamp is provided so as to be inscribed in the middle portion of the upper side of the opening of the body flange, and the first element extending in the horizontal direction from the feeding point interferes with the high mount stop lamp. In this case, it is only necessary to extend the filament so as to make a detour along the lower side and the side side of the high-mount stop lamp.
  • the length from the feeding point of the first element to the tip of the U-shaped line, and the feeding point of the first element is ⁇ / 4.
  • the core point of the coaxial cable extending from the tuner is connected to the feeding point 6 so that the jacket wire of the coaxial cable is grounded to the metal body of the vehicle body.
  • the element 10 when using the thing which printed the insulating ceramic paste layer 2 colored in black etc. in the peripheral part of the glass plate as the window glass 1 for motor vehicles, after drying this ceramic paste layer 2, it is 1st Since the element 10, the feeding point 6 and the like are arranged on the ceramic paste layer 2 so as to make the feeding point 6 and a part of the antenna line invisible from the outside of the vehicle, the appearance is improved, which is preferable.
  • the antenna formed by printing a conductive material on a transparent resin film or sheet having an adhesive surface, or formed by a fine metal wire may be attached to a glass plate surface of an automobile.
  • the length from the feeding point 6 of the first element 10 to the tip of the U-shaped line 12 is ⁇ / 4, because the length is ⁇ / 4 ( ⁇ : wavelength reduction rate of glass) , ⁇ : wavelength of the received radio wave), and reception sensitivity is improved.
  • the reason why the first element is close to and capacitively coupled along the upper side of the opening of the body flange is that radio waves received by the metal body can be effectively taken in by capacitive coupling with the body flange.
  • the first element When there is a high-mount stop lamp, the first element is detoured and extended along the lower side of the high-mount stop lamp because the first element extended from the feed point interferes with the high-mount stop lamp Therefore, the performance of the first element is not impaired, and the appearance is not impaired.
  • Example 1 As shown in FIG. 1, Example 1 is a VICS antenna including a first element and a second element, and the antenna is located at an intermediate position on the upper side of the opening of the body flange 3 of the rear window glass 1 of the automobile. It is in the vicinity of the inscribed high-mount stop lamp 5.
  • the first element 10 has a high mount stop lamp from a lower corner portion of the feeding point 6 disposed on the glass surface in the vicinity of the upper side of the opening of the body flange 3 and in the vicinity of the high mount stop lamp 5.
  • 5 comprises a horizontal line 11 extending to the vicinity of the side of 5 and a substantially U-shaped line 12 extending along the outer periphery of the side and the lower side of the high-mount stop lamp 5 from its front end.
  • the second element 20 includes a vertical line 21 that branches off from the middle part of the horizontal line 11 of the first element 10 and a horizontal line that extends horizontally in the opposite horizontal direction away from the high-mount stop lamp 5 from its lower end. It consists of strips 22, and the shape of the second element is L-shaped. Further, the horizontal filament 22 of the second element 20 is brought close to the horizontal filament located on the uppermost side of the conductive heating horizontal filament 4 and is capacitively coupled to the conductive heating horizontal filament 4.
  • each line of this antenna is as follows.
  • the antenna is printed with a conductive ceramic paste at a predetermined position on the indoor side of the rear window glass at a width of 0.7 mm, dried, baked in a heating bending furnace, and further from a tuner (not shown).
  • the central conductor of the extended coaxial cable was connected to the feeding point 6, and the outer conductor was grounded to the metal body.
  • the antenna of Example 1 created in this way was provided on the rear window glass of the automobile and received as an antenna for receiving a VICS multiplex broadcast wave having a frequency of 88 to 108 MHz outside of Japan. As shown by a thin solid line, good frequency characteristics can be obtained, compared with the antenna of Comparative Example 1 described later shown in FIG. Thus, it can be seen that the average reception sensitivity is improved over almost the entire frequency band, and that sufficiently good reception sensitivity can be obtained even when used alone.
  • the directional characteristic diagram shown by the thick solid line in FIG. 10 represents the directional characteristic when the reception frequency of the antenna pattern (when the second element 20 is present) shown in the first embodiment of FIG. 1 is 95 MHz, and the thin solid line
  • the directional characteristic diagram shown in FIG. 8 represents the directional characteristic of the antenna pattern of the comparative example 1 as shown in FIG. From FIG. 10, it can be seen that the antenna of Example 1 of the present invention is excellent in directional characteristics without a large drop in all directions.
  • the antenna pattern of the present invention shown in FIG. 1 is superior in both frequency characteristics and directivity characteristics compared to the pattern of Comparative Example 1 as shown in FIG. .
  • the VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside Japan has been described.
  • the present invention is used as a 76 to 90 MHz VICS multiple broadcast wave receiving antenna in Japan.
  • the lengths of the horizontal stripes of the elements of each antenna are adjusted according to the respective wavelengths of the frequency band outside Japan and the frequency band inside Japan.
  • the wavelength of the VICS frequency 76 to 90 MHz in Japan may be about 18% longer than the wavelength of the VICS frequency 88 to 108 MHz outside Japan. This is because the center frequency of the VICS band outside Japan is approximately 18% higher than the center frequency of the VICS band in Japan.
  • Example 2 The second embodiment shown in FIG. 2 has the same configuration as that of the first embodiment except that the horizontal line 22 of the second element 20 is different from the first embodiment shown in FIG.
  • the horizontal line 22 of the second element 20 is a line extending horizontally in both the left and right directions from the lower end of the vertical line 21, and the second element has an inverted T shape.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • Example 3 The third embodiment shown in FIG. 3 has the same configuration as that of the first embodiment except that the horizontal line 22 of the second element 20 is different from the first embodiment shown in FIG.
  • the horizontal line 22 of the second element 20 is a line extending horizontally from the lower end of the vertical line 21 in a direction away from the feeding point, and the second element has an inverted L shape.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • Example 4 shown in FIG. 4 is different from Example 1 shown in FIG. 1 in that the branch position of the second element branched from the first element is different and the length of the horizontal line 22 of the second element is different.
  • the configuration is exactly the same as that of the first embodiment.
  • the vertical line 21 of the second element 20 extends in a horizontal direction away from the high-mount stop lamp from the tip of the vertical line 21 extending downward from the corner portion near the high-mount stop lamp side of the feeding point. It is L-shaped with the horizontal filament 22 extended.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • the fifth embodiment shown in FIG. 5 has the same configuration as that of the first embodiment except that the position of the vertical line of the second element extending from the feeding point is different from that of the fourth embodiment shown in FIG.
  • the vertical strip 21 of the second element 20 extends downward from the corner portion on the side away from the high-mount stop lamp at the feeding point, and is separated from the high-mount stop lamp from the tip. It is the L shape which extended the horizontal filament 22 in the horizontal direction.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • Example 6 shown in FIG. 6 has substantially the same shape as Example 1 except that the distance between the horizontal filament portion of the first element 10 and the body flange is different from Example 1 shown in FIG. It is a configuration.
  • Example 6 the distance between the horizontal filament 11 of the first element 10 and the upper side of the opening of the body flange is narrowed to 17 mm. Following this, the longitudinal length of the U-shaped filaments is slightly longer. The length of the vertical filament 21 of the second element was also 73 mm.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • Example 7 The seventh embodiment shown in FIG. 7 has the same configuration as that of the first embodiment except that the shape of the second element 20 is different from that of the first embodiment shown in FIG.
  • the second element 20 extends the second horizontal line 23 from the feeding point 6 in the direction opposite to the side where the high mount stop lamp is located, extends the vertical line 21 downward from the tip, and the high mount stop from the lower end.
  • the horizontal element 22 that is folded back in the horizontal direction toward the lamp 5 is extended so that the second element 20 has a U shape.
  • the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
  • the antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
  • the comparative example 1 shown in FIG. 8 has a pattern shape that has only the first element of the first embodiment shown in FIG. 1 and does not have the second element 20.
  • the antenna of Comparative Example 1 was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the window glass plate at a width of 0.7 mm, dried, and then heated and heated in a furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the feeding point 6 and the outer conductor was grounded to the metal body.
  • the VICS antenna of Comparative Example 1 created in this way was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna with a frequency of 88 to 108 MHz outside of Japan.
  • the thin solid line in FIG. And the directivity as shown by the thin solid line in FIG.

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  • Details Of Aerials (AREA)

Abstract

Provided is a window-embedded antenna for vehicles, wherein an FM multiplex broadcasting airwave for FM radio broadcasting and the Vehicle Information and Communication System (VICS) is received in a suitable manner. The antenna, which is formed on a blank space section above a plurality of conductive heating horizontal filaments formed on a rear window glass of an automobile, is comprised of: a first element that is extended from a feeding point formed on a glass surface in the vicinity of an upper side of an opening in the body flange, and extending approximately in the horizontal direction along the upper side of the flange; and a second element that is comprised of a vertical line that branches downwards from a point halfway through the first element or extends downwards from the feeding point, and a horizontal line connected to the lower end of the vertical line. The horizontal line of the second element was made to draw near a conductive heating horizontal filament at the uppermost side of the conductive heating horizontal filaments, to become capacitively coupled thereto.

Description

車両用ガラスアンテナGlass antenna for vehicles
　本発明は、自動車用窓ガラスの余白部に設けるＦＭラジオ放送波用、またはＶＩＣＳ（道路交通情報システム、Vehicle Information and Communication System）などのＩＴＳ（Intelligent Transport Systems、高度交通システム）用ＦＭ多重放送波を受信するのに好適なガラスアンテナに関するものである。 The present invention is for FM radio broadcast waves provided in the margin of an automobile window glass or FM multiple broadcast waves for ITS (Intelligent Transport Systems) such as VICS (Vehicle Information Communication and Communication System). It is related with the glass antenna suitable for receiving.
　近年、カーナビゲーションシステムの普及とともに、渋滞情報、工事情報、事故・故障車情報等のＩＴＳ（Intelligent Transport Systems、高度交通システム）の重要性が増し、ＶＩＣＳなどのＩＴＳ用ＦＭ多重放送局も増加している状況にある。 In recent years, with the widespread use of car navigation systems, the importance of ITS (Intelligent Transport Systems) such as traffic jam information, construction information, and accident / failure vehicle information has increased, and FM multiplex broadcasting stations for ITS such as VICS have also increased. Is in a situation.
　前記ＶＩＣＳなどのＩＴＳ用ＦＭ多重放送波は、日本国内での周波数帯域が７６～９０ＭＨｚ、日本国外での周波数帯域が８８～１０８ＭＨｚで放送されるＦＭラジオ放送波に多重されている。このため、従来、ＶＩＣＳ用ＦＭ多重放送波の受信には、ＦＭラジオ放送波を受信するためのアンテナを兼用して受信することが多く、受信した信号を分配して、ＦＭラジオ放送波受信用とＶＩＣＳ用ＦＭ多重放送波受信用に使用することが多く行われていた。 ITS FM multiplex broadcast waves such as VICS are multiplexed with FM radio broadcast waves broadcast in a frequency band of 76 to 90 MHz in Japan and in a frequency band of 88 to 108 MHz outside Japan. For this reason, conventionally, in order to receive FM multiplex broadcast waves for VICS, there are many cases where reception is also performed using an antenna for receiving FM radio broadcast waves, and the received signals are distributed to receive FM radio broadcast waves. It is often used for receiving FM multiplex broadcast waves for VICS.
　自動車の窓ガラスにＶＩＣＳ用のＦＭ多重放送波を受信するアンテナ装置を設けた事例として、例えば、特開平１１－２３４０２０号公報には、アンテナ導体６の受信信号をバッファ回路８を介してＦＭ多重放送用受信機１５に送り、同受信信号をバッファ回路８、ＡＧＣ入力付回路１２を介してＡＧＣ信号送出型ラジオ１７に送り、ＡＧＣ信号送出型ラジオ１７からのＡＧＣ信号をＡＧＣ入力付回路１２のＡＧＣ入力に送ることによって、同時に異なる受信周波数の放送を良好に受信する自動車用ガラスアンテナ装置が記載されている（特許文献１）。 As an example in which an antenna device for receiving FM multiplex broadcast waves for VICS is provided on a window glass of an automobile, for example, in Japanese Patent Application Laid-Open No. 11-234020, a received signal of an antenna conductor 6 is FM multiplexed via a buffer circuit 8. The AGC signal is sent to the broadcast receiver 15, and the received signal is sent to the AGC signal transmission type radio 17 via the buffer circuit 8 and the AGC input circuit 12. The AGC signal from the AGC signal transmission type radio 17 is sent to the AGC input circuit 12. An automotive glass antenna device is described that receives a broadcast of different reception frequencies at the same time by sending it to an AGC input (Patent Document 1).
　また、例えば、特開平９－２８９４１１公報には、ＶＩＣＳ用電波を受けるアンテナをフロントガラスに、ＦＭラジオ用電波を受けるアンテナをリアガラスに、互いにルーフを介して離間させて設け、異なる局からのＶＩＣＳ用ＦＭ電波とＦＭラジオ用電波を同時に受信しても受信性能が劣化しない車載用アンテナ装置が記載されている（特許文献２）。 Also, for example, in Japanese Patent Laid-Open No. 9-289411, an antenna that receives a VICS radio wave is provided on the front glass, and an antenna that receives an FM radio wave is provided on the rear glass so as to be separated from each other via a roof. A vehicle-mounted antenna device is described in which reception performance does not deteriorate even if FM radio waves and FM radio waves are received simultaneously (Patent Document 2).
特開平１１－２３４０２０公報Japanese Patent Laid-Open No. 11-234020 特開平９－２８９４１１公報Japanese Patent Laid-Open No. 9-289411
　前記特許文献１は、デフォッガの上部余白部でデフォッガに近接して設けたアンテナを兼用アンテナとしてＦＭラジオ放送波とＶＩＣＳ用の電波の異なる受信周波数の電波を受信し、ＦＭラジオ放送波とＶＩＣＳ用の電波のそれぞれに分配するときに、アンテナとチューナー間に設ける回路によって、それぞれの電波の信号レベルを低下させないようにしたものであり、ガラス面に設けたアンテナパターンによって、電波の信号レベルを低下させないようにしたものではない。 Patent Document 1 receives FM radio broadcast waves and VICS radio waves having different reception frequencies using an antenna provided in the upper margin of the defogger in the vicinity of the defogger as a dual-purpose antenna, and FM radio broadcast waves and VICS When distributing to each of the radio waves, the circuit provided between the antenna and the tuner prevents the signal level of each radio wave from being reduced. The antenna pattern provided on the glass surface reduces the signal level of the radio wave. It is not meant not to let you.
　また、前記特許文献２には、フロントガラスの上辺側に口の字状のメインのＶＩＣＳ用アンテナ、後部窓ガラスのデフォッガの上部余白部には目の字状のサブのＶＩＣＳ用アンテナを設け、ダイバーシティ受信させるようにしたものであるが、単独で用いると指向特性の落ち込み部があって受信特性が平坦でないという問題点があった。 Further, in Patent Document 2, a mouth-shaped main VICS antenna is provided on the upper side of the windshield, and an eye-shaped sub VICS antenna is provided in the upper margin of the defogger of the rear window glass. Although diversity reception is used, there is a problem in that the reception characteristic is not flat because there is a drop in directivity when used alone.
　本発明は、このような問題点、すなわち、自動車の後部窓ガラスに設けたＶＩＣＳ用のＦＭ多重放送波のアンテナによって、感度の向上と、周波数特性の平坦化、指向特性におけるアンテナ感度の落ち込みを抑え、改善することを目的とするものである。 The present invention has such problems, that is, an FM multiplex broadcast wave antenna for VICS provided on the rear window glass of an automobile, improves sensitivity, flattens frequency characteristics, and decreases antenna sensitivity in directivity characteristics. It is intended to suppress and improve.
　すなわち、本発明は、自動車の後部窓ガラスに設けた複数本の導電加熱水平線条の上部余白部に設けるアンテナにおいて、ボディフランジの開口部上辺近傍のガラス面に設けた給電点からフランジの上辺に沿って略水平方向に延ばした第１エレメントと、該第１エレメントの途中部から下方に分岐する、または前記給電点から下方に延ばした垂直線条と、前記垂直線条の下端に接続した水平線条からなる第２エレメントとからなり、該第２エレメントの水平線条を最上部側の導電加熱水平線条に近接し容量結合させたことを特徴とする車両用ガラスアンテナである。 That is, according to the present invention, in the antenna provided in the upper margin of the plurality of conductive heating horizontal filaments provided on the rear window glass of the automobile, the feeding point provided on the glass surface near the upper side of the opening of the body flange extends from the upper side of the flange. A first element that extends in a substantially horizontal direction along the vertical line, a vertical line that branches downward from a middle portion of the first element, or that extends downward from the feeding point, and a horizontal line that is connected to the lower end of the vertical line. A glass antenna for a vehicle comprising: a second element comprising a strip, wherein the horizontal strip of the second element is close to the uppermost conductive heating horizontal strip and capacitively coupled.
　あるいはまた、本発明は、前記アンテナが、日本国内外のＦＭラジオ放送波用、またはＶＩＣＳ（道路交通情報システム、Vehicle Information and Communication System）用のＦＭ多重放送波を受信するアンテナであることを特徴とする上述の車両用ガラスアンテナである。 Alternatively, in the present invention, the antenna is an antenna that receives FM multiplex broadcast waves for FM radio broadcast waves in Japan and overseas, or for VICS (Vehicle Information Information and Communication System). It is the above-mentioned glass antenna for vehicles.
　あるいはまた、本発明は、ボディフランジの開口部の上辺の中間部位置に内接するように設けたハイマウントストップランプの両側辺と下辺に沿うように第１エレメントを設けたことを特徴とする上述の車両用ガラスアンテナである。 Alternatively, the present invention is characterized in that the first element is provided along the both sides and the lower side of the high-mount stop lamp provided so as to be inscribed in the middle portion of the upper side of the opening of the body flange. This is a vehicle glass antenna.
　あるいはまた、本発明は、前記第１エレメントの給電点からＵ字状線条の先端までの長さ、および、第１エレメントの給電点から第２エレメントの垂直線条を経た水平線条の先端までの長さを、それぞれαλ／４（α：ガラスの波長短縮率、λ：受信電波の中間周波数の波長）としたことを特徴とする上述のいずれかに記載の車両用ガラスアンテナである。 Alternatively, in the present invention, the length from the feeding point of the first element to the tip of the U-shaped line and the feeding point of the first element to the tip of the horizontal line passing through the vertical line of the second element. The glass antenna for a vehicle according to any one of the above, wherein the length of each is αλ / 4 (α: wavelength reduction rate of glass, λ: wavelength of intermediate frequency of received radio wave).
　あるいはまた、本発明は、粘着面を有する透明な樹脂フイルムまたはシートに導電性材料を印刷、または金属細線によって形成した前記アンテナを、自動車のガラス板面に貼り付けるようにしたことを特徴とする上述のいずれかに記載の車両用ガラスアンテナである。 Alternatively, the present invention is characterized in that a conductive material is printed on a transparent resin film or sheet having an adhesive surface, or the antenna formed by a thin metal wire is attached to a glass plate surface of an automobile. It is a glass antenna for vehicles in any one of the above-mentioned.
　自動車の後部窓ガラスに設けたアンテナをＶＩＣＳ用のＦＭ多重放送波専用のアンテナとすることによって、単独のアンテナであっても、受信感度を向上でき、周波数特性を平坦化でき、指向特性におけるアンテナ感度の落ち込みを抑えることによって、安定した受信利得が得られるようになった。 By using the antenna provided on the rear window glass of the automobile as an antenna dedicated to FM multiplex broadcast waves for VICS, even if it is a single antenna, the reception sensitivity can be improved, the frequency characteristics can be flattened, and the antenna in the directional characteristics Stable reception gain can be obtained by suppressing the drop in sensitivity.
本発明の実施例１のアンテナパターンの正面図。The front view of the antenna pattern of Example 1 of this invention. 本発明の実施例２のアンテナパターンの正面図。The front view of the antenna pattern of Example 2 of this invention. 本発明の実施例３のアンテナパターンの正面図。The front view of the antenna pattern of Example 3 of this invention. 本発明の実施例４のアンテナパターンの正面図。The front view of the antenna pattern of Example 4 of this invention. 本発明の実施例５のアンテナパターンの正面図。The front view of the antenna pattern of Example 5 of this invention. 本発明の実施例６のアンテナパターンの正面図。The front view of the antenna pattern of Example 6 of this invention. 本発明の実施例７のアンテナパターンの正面図。The front view of the antenna pattern of Example 7 of this invention. 比較例１のアンテナパターンの正面図。The front view of the antenna pattern of the comparative example 1. FIG. 本発明の実施例１と比較例１の周波数特性を比較した図。The figure which compared the frequency characteristic of Example 1 and Comparative Example 1 of this invention. 本発明の実施例１と比較例１の指向特性を比較した図。The figure which compared the directional characteristic of Example 1 and Comparative Example 1 of this invention.
　図１に示すように、本発明のアンテナは、自動車の後部窓ガラス１に設けた複数本の導電加熱水平線条４の上部余白部に設けたアンテナであって、ボディフランジ３の開口部の上辺近傍のガラス面に設けた給電点６からボディフランジ３の開口部の上辺に沿って略水平方向に延ばした第１エレメント１０と、該第１エレメント１０の途中部から下方に分岐する垂直線条２１、または前記給電点から下方に延ばした垂直線条２１の下端に接続した水平線条２２からなる第２エレメント２０とからなり、該第２エレメント２０の水平線条２２を最上部側に位置する導電加熱水平線条４に近接させたものである。 As shown in FIG. 1, the antenna of the present invention is an antenna provided in an upper margin of a plurality of conductive heating horizontal filaments 4 provided on a rear window glass 1 of an automobile, and an upper side of an opening of a body flange 3. A first element 10 extending in a substantially horizontal direction along the upper side of the opening of the body flange 3 from a feeding point 6 provided on a nearby glass surface, and a vertical filament that branches downward from a middle portion of the first element 10 21 or a second element 20 consisting of a horizontal line 22 connected to the lower end of a vertical line 21 extending downward from the feeding point, and the horizontal line 22 of the second element 20 is located on the uppermost side. It is made to adjoin to the heating horizontal filament 4.
　本発明のアンテナの第１エレメント１０の、ボディフランジ３に近接して設ける水平線条部分は、ボディフランジ３の上辺の内側から少なくとも１０～３０ｍｍの間隔で近接して設け、容量結合させた。 The horizontal line portion provided in the vicinity of the body flange 3 of the first element 10 of the antenna of the present invention was provided close to the inside of the upper side of the body flange 3 at an interval of at least 10 to 30 mm, and was capacitively coupled.
　また、前記第２エレメント２０も、最上部側に位置する導電加熱水平線条４に、１０ｍｍの間隔で近接して容量結合させる。 Also, the second element 20 is also capacitively coupled close to the conductive heating horizontal filament 4 located on the uppermost side at an interval of 10 mm.
　また、前記アンテナは、周波数が７６～９０ＭＨｚの日本国内のＦＭラジオ放送波、周波数が８８～１０８ＭＨｚの日本国外のＦＭラジオ放送波またはＶＩＣＳ（道路交通情報システム）などのＩＴＳ（高度交通システム）用のＦＭ多重放送波を受信するアンテナとして単独の目的で使用する。 The antenna is used for FM radio broadcast waves in Japan with a frequency of 76-90 MHz, FM radio broadcast waves outside Japan with a frequency of 88-108 MHz, or ITS (Advanced Traffic System) such as VICS (Road Traffic Information System). It is used for the sole purpose as an antenna for receiving the FM multiplex broadcast wave.
　本発明のアンテナを、日本国内で使用する場合と、日本国外で使用する場合のように周波数が異なる帯域で使用する場合において、同一パターンのアンテナを採用することができるが、各アンテナのエレメントの水平線条については、各周波数帯域の中間周波数の波長によって線条長さを調整するのが良い。 When the antenna of the present invention is used in Japan and when used in a different frequency band, such as when used outside of Japan, the same pattern antenna can be adopted. About a horizontal filament, it is good to adjust a filament length with the wavelength of the intermediate frequency of each frequency band.
　このため、日本国内のＶＩＣＳ用周波数７６～９０ＭＨｚの波長は、日本国外のＶＩＣＳ用周波数８８～１０８ＭＨｚの波長に比べて、およそ水平線条の長さが約１８％程度長くなっている。これは、日本国外のＶＩＣＳ用帯域の中心周波数が、日本のＶＩＣＳ用帯域の中心周波数より約１８％高いためである。 For this reason, the wavelength of the VICS frequency 76 to 90 MHz in Japan is approximately 18% longer than the wavelength of the VICS frequency 88 to 108 MHz outside Japan. This is because the center frequency of the VICS band outside Japan is approximately 18% higher than the center frequency of the VICS band in Japan.
　さらに、ボディフランジの開口部の上辺の中間部位置に内接するようにハイマウントストップランプが設けられていて、給電点から水平方向に延ばした第１エレメントが、ハイマウントストップランプに干渉するような場合、ハイマウントストップランプの下辺、及び側辺に沿って迂回するように線条を延ばして設ければ良い。 Further, a high mount stop lamp is provided so as to be inscribed in the middle portion of the upper side of the opening of the body flange, and the first element extending in the horizontal direction from the feeding point interferes with the high mount stop lamp. In this case, it is only necessary to extend the filament so as to make a detour along the lower side and the side side of the high-mount stop lamp.
　また、ガラスの波長短縮率をα、受信電波の中間周波数の波長をλとすると、前記第１エレメントの給電点からＵ字状線条の先端までの長さ、および、第１エレメントの給電点から第２エレメントの垂直線条を経た水平線条の先端までの長さを、それぞれαλ／４とするのが望ましい。 Further, when the wavelength shortening rate of the glass is α, and the wavelength of the intermediate frequency of the received radio wave is λ, the length from the feeding point of the first element to the tip of the U-shaped line, and the feeding point of the first element It is desirable that the length from the vertical line of the second element to the tip of the horizontal line is αλ / 4.
　前記給電点６には、チューナーから延ばした同軸ケーブルの芯線側を接続し、同軸ケーブルの外被線は車体の金属ボディにアースさせるようにする。 The core point of the coaxial cable extending from the tuner is connected to the feeding point 6 so that the jacket wire of the coaxial cable is grounded to the metal body of the vehicle body.
　尚、ガラス板の周辺部に、例えば黒色等に着色した絶縁製のセラミックペースト層２を印刷したものを自動車用の窓ガラス１として用いる場合には、該セラミックペースト層２を乾燥後、第１エレメント１０、給電点６等を前記セラミックペースト層２上に重ねて配設することによって給電点６やアンテナの線条の一部を車外から見えなくすることができるので、見栄えが向上し好ましい。 In addition, when using the thing which printed the insulating ceramic paste layer 2 colored in black etc. in the peripheral part of the glass plate as the window glass 1 for motor vehicles, after drying this ceramic paste layer 2, it is 1st Since the element 10, the feeding point 6 and the like are arranged on the ceramic paste layer 2 so as to make the feeding point 6 and a part of the antenna line invisible from the outside of the vehicle, the appearance is improved, which is preferable.
　また、粘着面を有する透明な樹脂フイルムまたはシートに導電性材料を印刷、または金属細線によって形成した前記アンテナを、自動車のガラス板面に貼り付けるようにしても良い。 Further, the antenna formed by printing a conductive material on a transparent resin film or sheet having an adhesive surface, or formed by a fine metal wire may be attached to a glass plate surface of an automobile.
　以下、本発明の作用について説明する。 Hereinafter, the operation of the present invention will be described.
　ＶＩＣＳの受信電波の波長をλ、ガラス板の波長短縮率をαとした場合、第１エレメント１０の給電点６からＵ字状線条１２の先端までの長さ、および、第１エレメント１０の給電点から第２エレメント２０の垂直線条２１を経た水平線条２２の先端までの長さを、それぞれαλ／４としたのは、前記各長さがαλ／４（α：ガラスの波長短縮率、λ：受信電波の波長）に相当する長さとなり、受信感度が向上するためである。 When the wavelength of the received radio wave of VICS is λ and the wavelength reduction rate of the glass plate is α, the length from the feeding point 6 of the first element 10 to the tip of the U-shaped line 12, The length from the feeding point to the tip of the horizontal line 22 through the vertical line 21 of the second element 20 is αλ / 4, because the length is αλ / 4 (α: wavelength reduction rate of glass) , Λ: wavelength of the received radio wave), and reception sensitivity is improved.
　第１エレメントをボディフランジの開口部の上辺に沿って近接し容量結合させるようにしたのは、金属ボディが受信する電波をボディフランジとの容量結合によって有効に取り込むことができるからである。 The reason why the first element is close to and capacitively coupled along the upper side of the opening of the body flange is that radio waves received by the metal body can be effectively taken in by capacitive coupling with the body flange.
　第２エレメントの水平線条部分を、最上部側に位置する導電加熱水平線条４に近接させると良いとしたのは、デフォッガとして使用する導電加熱水平線条４を１つのアンテナとして機能させ、デフォッガが受信する電波を容量結合によって有効に取り込むことができるからである。 The reason why the horizontal line portion of the second element should be close to the conductive heating horizontal line 4 located on the uppermost side is that the conductive heating horizontal line 4 used as a defogger functions as one antenna and the defogger receives it. This is because the radio wave to be transmitted can be effectively captured by capacitive coupling.
　ハイマウントストップランプがある場合に、第１エレメントをハイマウントストップランプの下辺側に沿うように迂回させて延ばすようにしたのは、給電点から延ばした第１エレメントが、ハイマウントストップランプに干渉するため、第１エレメントの性能を損なわず、また見栄えも損なわないようにするためである。 When there is a high-mount stop lamp, the first element is detoured and extended along the lower side of the high-mount stop lamp because the first element extended from the feed point interferes with the high-mount stop lamp Therefore, the performance of the first element is not impaired, and the appearance is not impaired.
　以下に本発明の各実施例について、説明する。 Hereinafter, each example of the present invention will be described.
　［実施例１］
　図１に示すように、実施例１は、第１エレメントと第２エレメントからなるＶＩＣＳ用アンテナであり、該アンテナは自動車の後部窓ガラス１のボディフランジ３の開口部の上辺の中間部位置に内接されたハイマウントストップランプ５の近傍位置にある。 [Example 1]
As shown in FIG. 1, Example 1 is a VICS antenna including a first element and a second element, and the antenna is located at an intermediate position on the upper side of the opening of the body flange 3 of the rear window glass 1 of the automobile. It is in the vicinity of the inscribed high-mount stop lamp 5.
　前記第１エレメント１０は、該ボディフランジ３の開口部の上辺近傍、かつハイマウントストップランプ５の近傍位置のガラス面上に配設した給電点６の最下部側角部より、ハイマウントストップランプ５の側辺近傍まで延ばした水平線条１１と、その先端部よりハイマウントストップランプ５の側辺と下辺の外周に沿って延ばした略Ｕ字状の線条１２からなる。 The first element 10 has a high mount stop lamp from a lower corner portion of the feeding point 6 disposed on the glass surface in the vicinity of the upper side of the opening of the body flange 3 and in the vicinity of the high mount stop lamp 5. 5 comprises a horizontal line 11 extending to the vicinity of the side of 5 and a substantially U-shaped line 12 extending along the outer periphery of the side and the lower side of the high-mount stop lamp 5 from its front end.
　また、前記第２エレメント２０は、前記第１エレメント１０の水平線条１１の途中部より分岐する垂直線条２１と、その下端部よりハイマウントストップランプ５と離れる反対水平方向に水平に延ばした水平線条２２からなり、第２エレメントの形状がＬ字形状になっている。また、該第２エレメント２０の水平線条２２は、導電加熱水平線条４の最上部側に位置する水平線条に近接させ、導電加熱水平線条４と容量結合させている。 The second element 20 includes a vertical line 21 that branches off from the middle part of the horizontal line 11 of the first element 10 and a horizontal line that extends horizontally in the opposite horizontal direction away from the high-mount stop lamp 5 from its lower end. It consists of strips 22, and the shape of the second element is L-shaped. Further, the horizontal filament 22 of the second element 20 is brought close to the horizontal filament located on the uppermost side of the conductive heating horizontal filament 4 and is capacitively coupled to the conductive heating horizontal filament 4.
　本アンテナの各線条長さ、及び間隔を以下の通りとした。 The length and interval of each line of this antenna are as follows.
　第１エレメント１０の水平線条１１の長さ＝９０ｍｍ、
　Ｕ字状線条１２の長さ＝２８０ｍｍ、
　水平線条１１とボディフランジ３間の間隔＝３０ｍｍ、
　給電点６から水平線条１１上の垂直線条２１に分岐する分岐点までの長さ＝８０ｍｍ、
　Ｕ字状線条１２とハイマウントストップランプ間の間隔＝５ｍｍ、
　Ｕ字状線条の先端（給電点と反対側）とボディフランジ３間の間隔＝５ｍｍ、
　第２エレメント２０の垂直線条２１の長さ＝６０ｍｍ、水平線条２２の長さ＝２５０ｍｍ、
　水平線条２２と導電加熱水平線条４の最上部側に位置する水平線条との間隔＝１０ｍｍ
　前記アンテナは、後部窓ガラスの室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体を給電点６に接続し、外被導体については金属ボディにアースした。 The length of the horizontal filament 11 of the first element 10 = 90 mm,
The length of the U-shaped filament 12 = 280 mm,
The interval between the horizontal filament 11 and the body flange 3 = 30 mm,
The length from the feeding point 6 to the branching point branched to the vertical line 21 on the horizontal line 11 = 80 mm,
The distance between the U-shaped strip 12 and the high-mount stop lamp = 5 mm,
The distance between the tip of the U-shaped wire (opposite to the feeding point) and the body flange 3 = 5 mm,
The length of the vertical filament 21 of the second element 20 = 60 mm, the length of the horizontal filament 22 = 250 mm,
The distance between the horizontal line 22 and the horizontal line located on the uppermost side of the conductive heating horizontal line 4 is 10 mm.
The antenna is printed with a conductive ceramic paste at a predetermined position on the indoor side of the rear window glass at a width of 0.7 mm, dried, baked in a heating bending furnace, and further from a tuner (not shown). The central conductor of the extended coaxial cable was connected to the feeding point 6, and the outer conductor was grounded to the metal body.
　このようにして作成した実施例１のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、図９の太い実線で示す良好な周波数特性が得られ、細い実線で示したように図８に示した後述の比較例１のアンテナ（図１の第２のエレメント２０を有していないパターン構成のアンテナに相当）と比べて、ほぼ全周波数帯域にわたって平均受信感度の向上が見られ、単独使用でも充分良好な受信感度が得られることが判る。 The antenna of Example 1 created in this way was provided on the rear window glass of the automobile and received as an antenna for receiving a VICS multiplex broadcast wave having a frequency of 88 to 108 MHz outside of Japan. As shown by a thin solid line, good frequency characteristics can be obtained, compared with the antenna of Comparative Example 1 described later shown in FIG. Thus, it can be seen that the average reception sensitivity is improved over almost the entire frequency band, and that sufficiently good reception sensitivity can be obtained even when used alone.
　また、図１０の太い実線で示した指向特性図は、図１の実施例１に示したアンテナパターン（第２エレメント２０がある場合）の受信周波数が９５ＭＨｚの時の指向特性を表わし、細い実線で示した指向特性図は、図８に示したような比較例１のアンテナパターン（図１の第２エレメント２０を有していないパターン構成のアンテナに相当）の指向特性を表わしている。図１０により、本発明の実施例１のアンテナが全方位にわたって大きな落ち込みもなく指向特性が優れていることがわかる。 The directional characteristic diagram shown by the thick solid line in FIG. 10 represents the directional characteristic when the reception frequency of the antenna pattern (when the second element 20 is present) shown in the first embodiment of FIG. 1 is 95 MHz, and the thin solid line The directional characteristic diagram shown in FIG. 8 represents the directional characteristic of the antenna pattern of the comparative example 1 as shown in FIG. From FIG. 10, it can be seen that the antenna of Example 1 of the present invention is excellent in directional characteristics without a large drop in all directions.
　図９、図１０からわかるように、図１に示した本発明のアンテナパターンが図８に示したような比較例１のパターンに比べて周波数特性、および指向特性が共に優れていることがわかる。 As can be seen from FIGS. 9 and 10, it can be seen that the antenna pattern of the present invention shown in FIG. 1 is superior in both frequency characteristics and directivity characteristics compared to the pattern of Comparative Example 1 as shown in FIG. .
　以上、実施例１において、日本国外の周波数の８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用アンテナについて説明したが、本発明は、日本国内の７６～９０ＭＨｚのＶＩＣＳ用多重放送波受信用アンテナとして使用する場合には、各アンテナのエレメントの水平線条について、日本国外の周波数帯域と、日本国内の周波数帯域のそれぞれの波長に応じて線条長さを調整する。 In the first embodiment, the VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside Japan has been described. However, the present invention is used as a 76 to 90 MHz VICS multiple broadcast wave receiving antenna in Japan. In this case, the lengths of the horizontal stripes of the elements of each antenna are adjusted according to the respective wavelengths of the frequency band outside Japan and the frequency band inside Japan.
　すなわち、日本国内のＶＩＣＳ用周波数７６～９０ＭＨｚの波長は、日本国外のＶＩＣＳ用周波数８８～１０８ＭＨｚの波長に比べて、およそ水平線条の長さを約１８％程度長くすれば良い。これは、日本国外のＶＩＣＳ用帯域の中心周波数が、日本のＶＩＣＳ用帯域の中心周波数より約１８％高いためである。 That is, the wavelength of the VICS frequency 76 to 90 MHz in Japan may be about 18% longer than the wavelength of the VICS frequency 88 to 108 MHz outside Japan. This is because the center frequency of the VICS band outside Japan is approximately 18% higher than the center frequency of the VICS band in Japan.
　［実施例２］
　図２に示す実施例２は、図１に示す実施例１と比べて、第２エレメント２０の水平線条２２が異なっている以外は、実施例１と全く同一構成である。 [Example 2]
The second embodiment shown in FIG. 2 has the same configuration as that of the first embodiment except that the horizontal line 22 of the second element 20 is different from the first embodiment shown in FIG.
　すなわち、第２エレメント２０の水平線条２２は、垂直線条２１の下端より左右両方向に水平に延ばした線条となっており、第２エレメントが逆Ｔ字形状になっている。 That is, the horizontal line 22 of the second element 20 is a line extending horizontally in both the left and right directions from the lower end of the vertical line 21, and the second element has an inverted T shape.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　［実施例３］
　図３に示す実施例３は、図１に示す実施例１と比べて、第２エレメント２０の水平線条２２が異なっている以外は、実施例１と全く同一構成である。 [Example 3]
The third embodiment shown in FIG. 3 has the same configuration as that of the first embodiment except that the horizontal line 22 of the second element 20 is different from the first embodiment shown in FIG.
　すなわち、第２エレメント２０の水平線条２２は、垂直線条２１の下端より給電点とは離れる方向に水平に延ばした線条となっており、第２エレメントが逆Ｌ字形状になっている。 That is, the horizontal line 22 of the second element 20 is a line extending horizontally from the lower end of the vertical line 21 in a direction away from the feeding point, and the second element has an inverted L shape.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　［実施例４］
　　図４に示す実施例４は、図１に示す実施例１と比べて、第１エレメントから分岐する第２エレメントの分岐位置が異なり、第２エレメントの水平線条２２の長さが異なっている以外は、実施例１と全く同一構成である。 [Example 4]
Example 4 shown in FIG. 4 is different from Example 1 shown in FIG. 1 in that the branch position of the second element branched from the first element is different and the length of the horizontal line 22 of the second element is different. The configuration is exactly the same as that of the first embodiment.
　すなわち、第２エレメント２０の垂直線条２１は、給電点のハイマウントストップランプ側に近いコーナー部から下方に向けて垂直線条２１を延ばし、その先端からハイマウントストップランプとは離れる水平方向に水平線条２２を延ばしたＬ字形状である。 That is, the vertical line 21 of the second element 20 extends in a horizontal direction away from the high-mount stop lamp from the tip of the vertical line 21 extending downward from the corner portion near the high-mount stop lamp side of the feeding point. It is L-shaped with the horizontal filament 22 extended.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　［実施例５］
　図５に示す実施例５は、図４に示す実施例４と比べて、給電点から延ばす第２エレメントの垂直線条の位置が異なっている以外は、実施例１と全く同一構成である。 [Example 5]
The fifth embodiment shown in FIG. 5 has the same configuration as that of the first embodiment except that the position of the vertical line of the second element extending from the feeding point is different from that of the fourth embodiment shown in FIG.
　すなわち、第２エレメント２０の垂直線条２１は、給電点のハイマウントストップランプと離れている側のコーナー部から下方に向けて垂直線条２１を延ばし、その先端からハイマウントストップランプとは離れる水平方向に水平線条２２を延ばしたＬ字形状である。 That is, the vertical strip 21 of the second element 20 extends downward from the corner portion on the side away from the high-mount stop lamp at the feeding point, and is separated from the high-mount stop lamp from the tip. It is the L shape which extended the horizontal filament 22 in the horizontal direction.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　［実施例６］
　図６に示す実施例６は、図１に示す実施例１と比べて、第１エレメント１０の水平線条部分とボディフランジ間の間隔が異なっている点以外は、実施例１とほぼ同一形状の構成である。 [Example 6]
Example 6 shown in FIG. 6 has substantially the same shape as Example 1 except that the distance between the horizontal filament portion of the first element 10 and the body flange is different from Example 1 shown in FIG. It is a configuration.
　すなわち、実施例６は、第１エレメント１０の水平線条１１と、ボディフランジの開口上辺との間隔を１７ｍｍに狭めている。これに追従して、Ｕ字状線条の縦方向の長さが若干長くなっている。また、第２エレメントの垂直線条２１の長さも７３ｍｍとした。 That is, in Example 6, the distance between the horizontal filament 11 of the first element 10 and the upper side of the opening of the body flange is narrowed to 17 mm. Following this, the longitudinal length of the U-shaped filaments is slightly longer. The length of the vertical filament 21 of the second element was also 73 mm.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　［実施例７］
　図７に示す実施例７は、図１に示す実施例１と比べて、第２エレメント２０の形状が異なっている以外は、実施例１と全く同一構成である。 [Example 7]
The seventh embodiment shown in FIG. 7 has the same configuration as that of the first embodiment except that the shape of the second element 20 is different from that of the first embodiment shown in FIG.
　すなわち、第２エレメント２０は、給電点６からハイマウントストップランプのある側とは反対方向に第２水平線条２３を延ばし、その先端より垂直線条２１を下方に延ばし、その下端よりハイマウントストップランプ５に向けて水平方向に折り返した水平線条２２を延ばして、第２エレメント２０がコ字形状になっている。 That is, the second element 20 extends the second horizontal line 23 from the feeding point 6 in the direction opposite to the side where the high mount stop lamp is located, extends the vertical line 21 downward from the tip, and the high mount stop from the lower end. The horizontal element 22 that is folded back in the horizontal direction toward the lamp 5 is extended so that the second element 20 has a U shape.
　前記アンテナは、実施例１と同様に後部窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体をホット側の給電点６に、外被導体については金属ボディにアースした。 In the same manner as in Example 1, the antenna was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the rear window glass plate at a width of 0.7 mm, dried, and then baked in a heating bending furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the hot feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した実施例２のアンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、実施例１と同様に満足できる受信感度が得られ、充分実用レベルにあった。 The antenna of Example 2 created in this manner was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna having a frequency of 88 to 108 MHz outside of Japan. Receivable sensitivity was obtained and it was sufficiently practical.
　以上、好適な実施例により説明したが、本発明はこれらに限定されるものではなく、種々の応用が可能である。 As mentioned above, although demonstrated by the preferable Example, this invention is not limited to these, A various application is possible.
　［比較例１］
　図８に示す比較例１は、図１に示す実施例１の第１エレメントだけを有し、第２エレメント２０を有していないパターン形状である。 [Comparative Example 1]
The comparative example 1 shown in FIG. 8 has a pattern shape that has only the first element of the first embodiment shown in FIG. 1 and does not have the second element 20.
　前記比較例１のアンテナを、実施例１と同様に窓ガラス板の室内面側の所定位置に導電性のセラミックペーストによって、各線条の幅を０．７ｍｍで印刷し、乾燥後、加熱曲げ炉によって焼付けし、さらに、図示しないチューナーから延ばした同軸ケーブルの中心導体を給電点６に、外被導体については金属ボディにアースした。 As in Example 1, the antenna of Comparative Example 1 was printed with a conductive ceramic paste at a predetermined position on the indoor surface side of the window glass plate at a width of 0.7 mm, dried, and then heated and heated in a furnace. Further, the central conductor of the coaxial cable extended from a tuner (not shown) was grounded to the feeding point 6 and the outer conductor was grounded to the metal body.
　このようにして作成した比較例１のＶＩＣＳ用アンテナを自動車の後部窓ガラスに設けて、日本国外の周波数８８～１０８ＭＨｚのＶＩＣＳ用多重放送波受信用のアンテナとして受信したところ、図９の細い実線で示したような周波数特性と、図１０の細い実線で示したような指向特性となった。 The VICS antenna of Comparative Example 1 created in this way was provided on the rear window glass of the automobile and received as a VICS multiple broadcast wave receiving antenna with a frequency of 88 to 108 MHz outside of Japan. The thin solid line in FIG. And the directivity as shown by the thin solid line in FIG.
　１　　　　窓ガラス
　２　　　　セラミックペースト層
　３　　　　ボディフランジ
　４　　　　導電加熱水平線条（デフォッガ）
　５　　　　ハイマウントストップランプ
　６　　　　給電点
１０　　　　第１エレメント
１１　　　　水平線条
１２　　　　略Ｕ字状線条
２０　　　　第２エレメント
２１　　　　垂直線条
２２　　　　水平線条 1 Window Glass 2 Ceramic Paste Layer 3 Body Flange 4 Conductive Heating Horizontal Line (Defogger)
5 High Mount Stop Lamp 6 Feed Point 10 First Element 11 Horizontal Line 12 Substantially U-shaped Line 20 Second Element 21 Vertical Line 22 Horizontal Line

Claims (5)

  1. 　自動車の後部窓ガラスに設けた複数本の導電加熱水平線条の上部余白部に設ける車両用ガラスアンテナであり、ボディフランジの開口部上辺近傍のガラス面に設けた給電点からフランジの上辺に沿って略水平方向に延ばした第１エレメントと、該第１エレメントの途中部から下方に分岐する、または前記給電点から下方に延ばした垂直線条と、前記垂直線条の下端に接続した水平線条からなる第２エレメントとを備え、該第２エレメントの水平線条を最上部側の導電加熱水平線条に近接し容量結合させた車両用ガラスアンテナ。 A glass antenna for a vehicle provided in an upper margin of a plurality of conductive heating horizontal filaments provided on a rear window glass of an automobile, from a feeding point provided on a glass surface near an upper side of an opening of a body flange along an upper side of the flange A first element extending in a substantially horizontal direction, a vertical line branched downward from a middle portion of the first element, or extended downward from the feeding point, and a horizontal line connected to a lower end of the vertical line A glass antenna for a vehicle including a second element and a horizontal line of the second element adjacent to and electrically coupled to the uppermost conductive heating horizontal line.
  2. 　前記アンテナは、日本国内、国外のＦＭラジオ放送波用、またはＩＴＳ（Intelligent Transport Systems、高度交通システム）用のＦＭ多重放送波を受信するアンテナである請求項１記載の車両用ガラスアンテナ。 The glass antenna for a vehicle according to claim 1, wherein the antenna is an antenna for receiving FM multiplex broadcast waves for FM radio broadcast waves in Japan and abroad, or for ITS (Intelligent Transport Systems).
  3. 　ボディフランジの開口部の上辺の中間部位置に内接するように設けたハイマウントストップランプの両側辺と下辺に沿うように第１エレメントを設けた請求項１または２に記載の車両用ガラスアンテナ。 3. The glass antenna for a vehicle according to claim 1, wherein the first element is provided along the both sides and the lower side of the high-mount stop lamp provided so as to be inscribed in the middle portion of the upper side of the opening of the body flange.
  4. 　ガラスの波長短縮率をα、受信電波の中間周波数の波長をλとしたとき、前記第１エレメントの給電点からＵ字状線条の先端までの長さ、および、第１エレメントの給電点から第２エレメントの垂直線条を経た水平線条の先端までの長さを、それぞれαλ／４とした請求項１乃至３のいずれかに記載の車両用ガラスアンテナ。 When the wavelength shortening rate of the glass is α and the wavelength of the intermediate frequency of the received radio wave is λ, the length from the feeding point of the first element to the tip of the U-shaped filament, and the feeding point of the first element The glass antenna for vehicles according to any one of claims 1 to 3 whose length to the tip of a horizontal filament which passed through a vertical filament of the 2nd element was made into (alpha) lambda / 4, respectively.
  5. 　粘着面を有する透明な樹脂フイルムまたはシートに導電性材料を印刷、または金属細線によって形成した前記アンテナを、自動車のガラス板面に貼り付けるようにした請求項１乃至４のいずれかに記載の車両用ガラスアンテナ。 The vehicle according to any one of claims 1 to 4, wherein the antenna formed by printing a conductive material on a transparent resin film or sheet having an adhesive surface, or a thin metal wire is attached to a glass plate surface of an automobile. Glass antenna.
PCT/JP2011/052310 2010-02-10 2011-02-04 Window-embedded antenna for vehicle WO2011099423A1 (en)

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Cited By (3)

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US9487441B2 (en) 2011-10-28 2016-11-08 Corning Incorporated Glass articles with infrared reflectivity and methods for making the same
US10116035B2 (en) 2015-04-30 2018-10-30 Corning Incorporated Electrically conductive articles with discrete metallic silver layers and methods for making same
CN110168806A (en) * 2017-01-11 2019-08-23 日本板硝子株式会社 Window glass for vehicle

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Publication number Priority date Publication date Assignee Title
JP2014170990A (en) * 2013-03-01 2014-09-18 Central Glass Co Ltd Automobile glass antenna

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JP2006101386A (en) * 2004-09-30 2006-04-13 Nippon Sheet Glass Co Ltd Hot-wire pattern structure of defogger formed on vehicle glass and vehicle glass antenna

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JPH09232845A (en) * 1996-02-26 1997-09-05 Asahi Glass Co Ltd Glass antenna for automobile
JPH09289411A (en) * 1996-04-22 1997-11-04 Mazda Motor Corp On-vehicle antenna device and its setting method
JP2003078317A (en) * 2001-09-05 2003-03-14 Mazda Motor Corp Pasted film antenna
JP2003249806A (en) * 2002-02-25 2003-09-05 Asahi Glass Co Ltd Rear window antenna for vehicle
JP2006101386A (en) * 2004-09-30 2006-04-13 Nippon Sheet Glass Co Ltd Hot-wire pattern structure of defogger formed on vehicle glass and vehicle glass antenna

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9487441B2 (en) 2011-10-28 2016-11-08 Corning Incorporated Glass articles with infrared reflectivity and methods for making the same
US9586861B2 (en) 2011-10-28 2017-03-07 Corning Incorporated Glass articles with discrete metallic silver layers and methods for making the same
US9975805B2 (en) 2011-10-28 2018-05-22 Corning Incorporated Glass articles with infrared reflectivity and methods for making the same
US11535555B2 (en) 2011-10-28 2022-12-27 Corning Incorporated Glass articles with infrared reflectivity and methods for making the same
US10116035B2 (en) 2015-04-30 2018-10-30 Corning Incorporated Electrically conductive articles with discrete metallic silver layers and methods for making same
CN110168806A (en) * 2017-01-11 2019-08-23 日本板硝子株式会社 Window glass for vehicle

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