JP2015101244A - Wireless power supply system of vehicle room mirror - Google Patents

Wireless power supply system of vehicle room mirror Download PDF

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JP2015101244A
JP2015101244A JP2013244108A JP2013244108A JP2015101244A JP 2015101244 A JP2015101244 A JP 2015101244A JP 2013244108 A JP2013244108 A JP 2013244108A JP 2013244108 A JP2013244108 A JP 2013244108A JP 2015101244 A JP2015101244 A JP 2015101244A
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power
vehicle
windshield
rearview mirror
room mirror
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JP6209431B2 (en
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田中　信吾
Shingo Tanaka
信吾 田中
加藤　真吾
Shingo Kato
真吾 加藤
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Yazaki Corp
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Yazaki Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a wireless power supply system of a vehicle room mirror that can supply power to a room mirror without obstructing a visual field of a driver.SOLUTION: A wireless power supply system 1 comprises a power receiving coil 9 that is installed on a room mirror 3 mounted on a windshield 2 of a vehicle 10, and a power transmission coil 8 that is installed at a position inside the vehicle 10 capable of transmitting power to the power receiving coil 9 in a non-contact state, and more specifically installed to a roof part 4. The power received by the power receiving coil 9 is supplied to various devices in the room mirror 3. Consequently, the necessity of wiring arrangement on the windshield 2 is eliminated even if the room mirror 3 is a type directly mounted on the windshield 2, whereby power can be supplied to the room mirror 3 without obstructing a visual field of a driver.

Description

本発明は、車両用ルームミラーのワイヤレス給電システムに関する。   The present invention relates to a wireless power feeding system for a vehicle rearview mirror.

自動車等の車両のルームミラーには、例えばモニターや自動防眩機能などを搭載し、電源が必要となっているものがある。このようなルームミラーには給電線を接続する必要がある。また、近年のルームミラーは、その取り付け位置が車体ではなく、前面窓ガラス（フロントガラス、ウィンドシールド）上にあるものが増えている。このため、車両の本体側とルームミラー間のフロントガラス上に有線配線が必要となる（例えば特許文献１を参照）。   Some room mirrors of vehicles such as automobiles are equipped with, for example, a monitor and an automatic anti-glare function and require a power source. It is necessary to connect a power supply line to such a room mirror. In recent years, an increasing number of rear-view mirrors are mounted on the front window glass (windshield, windshield) instead of the vehicle body. For this reason, wired wiring is required on the windshield between the vehicle body side and the rearview mirror (see, for example, Patent Document 1).

特開２０１２−２２４１２１号公報JP 2012-224121 A

しかしながら、従来のフロントガラスに設置されたルームミラーへ電力を供給するための有線配線は、フロントガラスの中央近傍に配置されるため、運転者の視界の邪魔になる虞があり、また、配線の見栄えが損なわれる場合もあった。   However, since the conventional wired wiring for supplying power to the rearview mirror installed on the windshield is disposed near the center of the windshield, it may interfere with the driver's field of view. In some cases, the appearance was impaired.

本発明は、上記に鑑みてなされたものであって、運転者の視界の邪魔にならずにルームミラーへ電力を供給できる車両用ルームミラーのワイヤレス給電システムを提供することを目的とする。   The present invention has been made in view of the above, and an object thereof is to provide a wireless power feeding system for a vehicle rearview mirror that can supply power to the rearview mirror without obstructing the driver's field of view.

上記の課題を解決するため、本発明に係る車両用ルームミラーのワイヤレス給電システムは、車両のフロントガラスに取り付けられたルームミラーに設けられる受電部と、前記受電部に非接触状態で電力を伝送可能な前記車両内の位置に設けられる送電部と、を備え、前記受電部により受電された前記電力を前記ルームミラー内の各種装置に供給することを特徴とする。   In order to solve the above-described problem, a wireless power feeding system for a vehicle rearview mirror according to the present invention transmits power in a non-contact state to a power receiving unit provided in a room mirror attached to a windshield of the vehicle. And a power transmission unit provided at a position in the vehicle that is capable of supplying the power received by the power reception unit to various devices in the room mirror.

また、上記の車両用ルームミラーのワイヤレス給電システムにおいて、前記送電部が、前記車両の前記フロントガラスの上方に配置されたルーフ部に設けられることが好ましい。   Moreover, in the wireless power feeding system for a vehicle rearview mirror described above, it is preferable that the power transmission unit is provided in a roof unit disposed above the windshield of the vehicle.

また、上記の車両用ルームミラーのワイヤレス給電システムにおいて、前記送電部が、前記車両の前記フロントガラスの下方に配置されたインストルメントパネル部に設けられることが好ましい。   Moreover, in the wireless power feeding system for a vehicle rearview mirror described above, it is preferable that the power transmission unit is provided in an instrument panel unit disposed below the windshield of the vehicle.

また、上記の車両用ルームミラーのワイヤレス給電システムにおいて、前記ルームミラーは、取り付け軸によって前記フロントガラスに回動可能に支持されており、前記受電部が、前記ルームミラーの回動中心を含む領域に設けられることが好ましい。   Also, in the above-described vehicle room mirror wireless power feeding system, the room mirror is rotatably supported on the windshield by an attachment shaft, and the power reception unit includes a rotation center of the room mirror. It is preferable to be provided.

また、上記の車両用ルームミラーのワイヤレス給電システムにおいて、前記受電部が、前記送電部と対向する前記ルームミラーの面の全域に亘り設けられることが好ましい。   In the vehicle room mirror wireless power feeding system, the power receiving unit is preferably provided over the entire area of the room mirror facing the power transmitting unit.

本発明に係る車両用ルームミラーのワイヤレス給電システムによれば、車両の本体側の送電部からルームミラー側の受電部に非接触で電力を伝送することができるので、車両の本体側とルームミラーとの間に電力供給のための有線配線を物理的に接続することが不要となる。このため、ルームミラーがフロントガラス上に直接取り付けられるタイプであっても、フロントガラス上に配線を配置する必要がなくなる。この結果、本発明に係る車両用ルームミラーのワイヤレス給電システムは、運転者の視界の邪魔にならずにルームミラーへ電力を供給できるという効果を奏する。   According to the wireless power feeding system for a vehicle rearview mirror according to the present invention, power can be transmitted in a non-contact manner from the power transmission unit on the vehicle main body side to the power reception unit on the rearview mirror side. It is not necessary to physically connect a wired wiring for supplying power between the two. For this reason, even if the rearview mirror is of a type that is directly mounted on the windshield, there is no need to arrange wiring on the windshield. As a result, the wireless power feeding system for a vehicle rearview mirror according to the present invention has an effect that power can be supplied to the rearview mirror without obstructing the driver's view.

図１は、本発明の第一実施形態に係る車両用ルームミラーのワイヤレス給電システムの概略構成を示す模式図である。FIG. 1 is a schematic diagram showing a schematic configuration of a wireless power feeding system for a vehicle rearview mirror according to a first embodiment of the present invention. 図２は、本発明の第二実施形態に係る車両用ルームミラーのワイヤレス給電システムの概略構成を示す模式図である。FIG. 2 is a schematic diagram showing a schematic configuration of a wireless power feeding system for a vehicle rearview mirror according to the second embodiment of the present invention.

以下に、本発明に係る車両用ルームミラーのワイヤレス給電システムの実施形態を図面に基づいて説明する。なお、以下の図面において、同一または相当する部分には同一の参照番号を付し、その説明は繰り返さない。   Hereinafter, an embodiment of a wireless power feeding system for a vehicle rearview mirror according to the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

［第一実施形態］
まず、図１を参照して、本発明の第一実施形態について説明する。図１は、本発明の第一実施形態に係る車両用ルームミラーのワイヤレス給電システムの概略構成を示す模式図である。 [First embodiment]
First, a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram showing a schematic configuration of a wireless power feeding system for a vehicle rearview mirror according to a first embodiment of the present invention.

図１に示すように、本実施形態の車両用ルームミラーのワイヤレス給電システム１（以下では単に「ワイヤレス給電システム」とも表記する）は、フロントガラス２と、車両用ルームミラー３（以下では単に「ルームミラー」とも表記する）と、ルーフ部４と、Ａピラー部５、インパネ部１１とを備える自動車等の車両１０において、車両１０の本体側からルームミラー３に対して非接触状態での電力の伝送、すなわちワイヤレス給電を行うためのシステムである。ワイヤレス給電システム１は、電源ユニット６と、給電線７と、送電コイル８（送電部）と、受電コイル９（受電部）とを備える。   As shown in FIG. 1, the vehicle room mirror wireless power feeding system 1 (hereinafter also simply referred to as “wireless power feeding system”) of the present embodiment includes a windshield 2 and a vehicle room mirror 3 (hereinafter simply referred to as “wireless power feeding system”). In a vehicle 10 such as an automobile provided with a roof portion 4, an A pillar portion 5, and an instrument panel portion 11, electric power in a non-contact state from the main body side of the vehicle 10 to the room mirror 3. Is a system for performing wireless transmission, that is, wireless power feeding. The wireless power supply system 1 includes a power supply unit 6, a power supply line 7, a power transmission coil 8 (power transmission unit), and a power reception coil 9 (power reception unit).

フロントガラス２は、車両１０の車室の上方を覆うルーフ部４の前縁端から、車両１０の前方かつ下方に延在するよう形成されている。つまりルーフ部４は、フロントガラスの上方に配置されている。Ａピラー部５は、ルーフ部４を支える車両１０のピラー（柱）のうち、フロントガラス２の左右側方に配置されたものである。インパネ（インストルメントパネル）部１１は、車両１０の車室内において、フロントガラス２の下方、かつ、前席（運転席及び助手席）の正面に配置される車両１０の内装部品全体を指すものである。   The windshield 2 is formed so as to extend forward and downward of the vehicle 10 from the front edge of the roof portion 4 that covers the upper part of the passenger compartment of the vehicle 10. That is, the roof part 4 is arrange | positioned above the windshield. The A pillar portion 5 is disposed on the left and right sides of the windshield 2 among the pillars (columns) of the vehicle 10 that supports the roof portion 4. The instrument panel (instrument panel) section 11 indicates the entire interior parts of the vehicle 10 that are arranged below the windshield 2 and in front of the front seats (driver seat and front passenger seat) in the vehicle interior of the vehicle 10. is there.

ルームミラー３は、運転者が車両１０の後方の状態を視認するためのミラーであり、車両１０の車室内に設けられる。ルームミラー３は、ミラー本体部３ａと、取り付け軸３ｂ（回動軸）とを有する。取り付け軸３ｂは、その一端部がフロントガラス２の車室側表面に接着固定されている。ミラー本体部３ａは、取り付け軸３ｂの他端部に回動自在に取り付けられている。つまり、ルームミラー３は、車両１０のルーフ部４に取り付けられるのではなく、フロントガラス２に取り付けられている。ルームミラー３は、取り付け軸３ｂによってフロントガラス２に回動可能に支持されている。つまり取り付け軸３ｂの軸心がルームミラー３の回動中心である。ルームミラー３には、例えば各種情報を表示するモニターや自動防眩機構など、作動のために電力供給を必要とする各種装置が設置されている。   The room mirror 3 is a mirror for the driver to visually recognize the state behind the vehicle 10, and is provided in the vehicle interior of the vehicle 10. The rearview mirror 3 has a mirror body 3a and a mounting shaft 3b (rotating shaft). One end of the mounting shaft 3b is bonded and fixed to the surface of the windshield 2 on the passenger compartment side. The mirror main body 3a is rotatably attached to the other end of the attachment shaft 3b. That is, the rearview mirror 3 is not attached to the roof portion 4 of the vehicle 10 but is attached to the windshield 2. The room mirror 3 is rotatably supported on the windshield 2 by a mounting shaft 3b. That is, the axis of the attachment shaft 3 b is the center of rotation of the rearview mirror 3. The room mirror 3 is provided with various devices that require power supply for operation, such as a monitor that displays various information and an automatic anti-glare mechanism.

ワイヤレス給電システム１の電源ユニット６は、車両１０に搭載される電力供給源であり、例えばバッテリ等の蓄電装置によって構成される。電源ユニット６は、例えば車室の前方や下方など車両１０内の任意の位置に配置される。給電線７は、電源ユニット６と送電コイル８とを電気的に接続するものであり、種々のケーブル、コネクタ等によって構成される。送電コイル８は、ルーフ部４に設けられ、電源ユニット６からの電力が給電線７を介して供給される。つまり、給電線７は、車両１０内の任意の位置に搭載される電源ユニット６から、Ａピラー部５の内部を通って、ルーフ部４に設けられている送電コイル８まで延在している。送電コイル８は、電源ユニット６からの電力を受電コイル９に伝送可能である。   The power supply unit 6 of the wireless power feeding system 1 is a power supply source mounted on the vehicle 10 and is configured by a power storage device such as a battery. The power supply unit 6 is arrange | positioned in the arbitrary positions in the vehicle 10, such as the front and the downward direction of a vehicle interior, for example. The power supply line 7 electrically connects the power supply unit 6 and the power transmission coil 8 and includes various cables, connectors, and the like. The power transmission coil 8 is provided in the roof portion 4, and power from the power supply unit 6 is supplied via the feeder line 7. That is, the feeder 7 extends from the power supply unit 6 mounted at an arbitrary position in the vehicle 10 to the power transmission coil 8 provided in the roof portion 4 through the inside of the A pillar portion 5. . The power transmission coil 8 can transmit power from the power supply unit 6 to the power reception coil 9.

受電コイル９は、ルームミラー３に設けられ、送電コイル８と非接触の状態で送電コイル８から電力を受電可能である。受電コイル９は、ルームミラー３に設置される上述の各種装置と電気的に接続されており、電源ユニット６から給電線７及び送電コイル８を介して受電した電力をこれらの各種装置に供給する。   The power receiving coil 9 is provided in the room mirror 3 and can receive power from the power transmitting coil 8 in a non-contact state with the power transmitting coil 8. The power receiving coil 9 is electrically connected to the above-described various devices installed in the room mirror 3, and supplies power received from the power supply unit 6 via the feeder line 7 and the power transmitting coil 8 to these various devices. .

送電コイル８及び受電コイル９は、例えば共に渦巻状に巻かれた導体コイルによって構成され、軸方向に互いに対向することで、一組の非接触給電用トランスを構成する。非接触給電用トランスは、例えば、電磁誘導方式、電磁界共鳴方式等、種々の方式によって送電コイル８から受電コイル９に非接触で電力を伝送することができる。ここで、電磁誘導方式とは、送電コイル８に交流電流を流すことで発生する磁束を媒体として受電コイル９に起電力を発生させる電磁誘導を用いて、送電コイル８から受電コイル９に電力を伝送する方式である。また、電磁界共鳴方式とは、送電コイル８に交流電流を流すことで送電コイル８と受電コイル９とを特定の周波数で共鳴させ、電磁界の共鳴現象を用いて送電コイル８から受電コイル９に電力を伝送する方式である。   The power transmission coil 8 and the power reception coil 9 are each formed of, for example, a conductor coil wound in a spiral shape, and constitute a set of non-contact power supply transformers by facing each other in the axial direction. The non-contact power supply transformer can transmit power from the power transmission coil 8 to the power reception coil 9 in a non-contact manner by various methods such as an electromagnetic induction method and an electromagnetic resonance method. Here, the electromagnetic induction method means that electric power is transmitted from the power transmission coil 8 to the power reception coil 9 by using electromagnetic induction that generates an electromotive force in the power reception coil 9 using a magnetic flux generated by flowing an alternating current through the power transmission coil 8 as a medium. This is a transmission method. The electromagnetic field resonance method resonates the power transmission coil 8 and the power reception coil 9 at a specific frequency by causing an alternating current to flow through the power transmission coil 8, and uses the electromagnetic field resonance phenomenon from the power transmission coil 8 to the power reception coil 9. This is a method for transmitting power to the network.

より詳細には、非接触給電用トランスでは、送電コイル８から受電コイル９に電力を伝送する場合、送電コイル８と受電コイル９とが軸方向に互いに間隔をあけて対向した状態で、電源ユニット６からの直流電流が、給電線７、インバータ等を含んで構成される送電回路等を介して、任意の周波数の交流電流に変換されて送電コイル８に供給される。送電コイル８に交流電流が供給されると、例えば、送電コイル８と受電コイル９とが電磁誘導結合し、送電コイル８からの電力が電磁誘導や電磁界共鳴により非接触で受電コイル９に受電される。受電コイル９が受電した電力は、整流器等を含んで構成される受電回路等を介して、交流電流から直流電流に変換されて、各種装置で利用される。   More specifically, in the contactless power transfer transformer, when power is transmitted from the power transmission coil 8 to the power reception coil 9, the power transmission unit 8 and the power reception coil 9 are opposed to each other with an interval in the axial direction. The direct current from 6 is converted into an alternating current of an arbitrary frequency and supplied to the power transmission coil 8 via a power transmission circuit including a feeder line 7, an inverter, and the like. When an alternating current is supplied to the power transmission coil 8, for example, the power transmission coil 8 and the power reception coil 9 are electromagnetically coupled, and the power from the power transmission coil 8 is received by the power reception coil 9 in a non-contact manner by electromagnetic induction or electromagnetic resonance. Is done. The electric power received by the power receiving coil 9 is converted from an alternating current to a direct current through a power receiving circuit including a rectifier and the like, and is used in various devices.

このように、本実施形態のワイヤレス給電システム１は、車両１０のフロントガラス２に取り付けられたルームミラー３に設けられる受電コイル９と、この受電コイル９に非接触状態で電力を送信可能な車両１０内の位置、より詳細にはルーフ部４に設けられる送電コイル８と、を備え、受電コイル９により受電された電力をルームミラー内の各種装置に供給する。   As described above, the wireless power feeding system 1 according to the present embodiment includes a power receiving coil 9 provided in the rearview mirror 3 attached to the windshield 2 of the vehicle 10 and a vehicle capable of transmitting power to the power receiving coil 9 in a non-contact state. 10, more specifically, a power transmission coil 8 provided in the roof portion 4, and supplies the power received by the power reception coil 9 to various devices in the room mirror.

この構成により、車両１０の本体側の送電コイル８からルームミラー３側の受電コイル９に非接触で電力を伝送することができるので、車両１０の本体側とルームミラー３との間に電力供給のための有線配線を物理的に接続することが不要となる。このため、本実施形態のようにルームミラー３がフロントガラス２上に直接取り付けられるタイプであっても、フロントガラス２上に配線を配置する必要がないので、運転者の視界の邪魔にならずにルームミラー３へ電力を供給することが可能となる。また、フロントガラス２上に有線配線が無いので、ルームミラー３への電力供給の適用によって配線の見栄えが損なわれることがない。さらに、ルームミラー３との距離が近いルーフ部４に送電コイル８が設けられるので、送電コイル８と受電コイル９との距離が比較的短くなるよう両者を配置することが可能であり、ワイヤレス給電による損失を低減できる。   With this configuration, electric power can be transmitted in a non-contact manner from the power transmission coil 8 on the main body side of the vehicle 10 to the power receiving coil 9 on the side of the room mirror 3, so that power is supplied between the main body side of the vehicle 10 and the room mirror 3. It is not necessary to physically connect the wired wiring for. For this reason, even if the rearview mirror 3 is of a type that is directly mounted on the windshield 2 as in this embodiment, there is no need to arrange wiring on the windshield 2, so that the driver's view is not obstructed. In addition, it is possible to supply power to the room mirror 3. Moreover, since there is no wired wiring on the windshield 2, the appearance of the wiring is not impaired by the application of power supply to the room mirror 3. Furthermore, since the power transmission coil 8 is provided on the roof portion 4 that is close to the room mirror 3, both can be arranged so that the distance between the power transmission coil 8 and the power reception coil 9 is relatively short. The loss due to can be reduced.

受電コイル９は、ルームミラー３の回動中心を含む領域、すなわち、取り付け軸３ｂの近傍に設けられる。つまり、受電コイル９の設置位置は、ルームミラー３のミラー本体部３ａ上において、ミラー本体部３ａの回動中心である取り付け軸３ｂにより近いことが好ましく、ルームミラー３の取り付け軸３ｂ上であることがさらに好ましい。これにより、運転者がルームミラー３を回動させた場合でも、送電コイル８と受電コイル９との間の距離が変化しにくいので、ワイヤレス給電の伝送効率の変化を抑制でき、電力の供給量を安定化させることができる。   The power receiving coil 9 is provided in a region including the center of rotation of the room mirror 3, that is, in the vicinity of the attachment shaft 3b. That is, the installation position of the power receiving coil 9 is preferably closer to the mounting shaft 3b that is the rotation center of the mirror main body 3a on the mirror main body 3a of the rearview mirror 3, and is on the mounting shaft 3b of the rearview mirror 3. More preferably. As a result, even when the driver rotates the rearview mirror 3, the distance between the power transmission coil 8 and the power reception coil 9 does not easily change. Can be stabilized.

［第二実施形態］
次に、図２を参照して、第二実施形態について説明する。図２は、本発明の第二実施形態に係る車両用ルームミラーのワイヤレス給電システムの概略構成を示す模式図である。 [Second Embodiment]
Next, a second embodiment will be described with reference to FIG. FIG. 2 is a schematic diagram showing a schematic configuration of a wireless power feeding system for a vehicle rearview mirror according to the second embodiment of the present invention.

図２に示すように、第二実施形態のワイヤレス給電システム１ａは、送電コイル８ａが車両１０のフロントガラス２の下方に配置されたインパネ部１１に設けられる点で、第一実施形態のワイヤレス給電システム１と異なるものである。   As shown in FIG. 2, the wireless power feeding system 1 a according to the second embodiment has a wireless power feeding system according to the first embodiment in that a power transmission coil 8 a is provided in an instrument panel unit 11 disposed below a windshield 2 of a vehicle 10. This is different from the system 1.

本実施形態のワイヤレス給電システム１ａでは、送電コイル８ａが、車両１０のフロントガラス２の上方に配置されたルーフ部４ではなく、フロントガラス２の下方に配置されたインパネ部１１に設けられることにより、送電コイル８ａの設置位置が車両１０の車体中央側となって電源ユニット６の設置位置に近くなる。これにより、例えば、内部スペースが限定されるＡピラー部５に給電線７ａを配線する必要がなくなるなど、給電線７ａの車両１０内への取り付けの手間を低減できるので、本実施形態のワイヤレス給電システム１ａは、第一実施形態と比べて車両１０内への設置が容易となる。   In the wireless power feeding system 1a of the present embodiment, the power transmission coil 8a is provided not on the roof portion 4 disposed above the windshield 2 of the vehicle 10 but on the instrument panel portion 11 disposed below the windshield 2. The installation position of the power transmission coil 8 a becomes the vehicle body center side of the vehicle 10 and is close to the installation position of the power supply unit 6. Thereby, for example, it is not necessary to wire the power supply line 7a to the A-pillar portion 5 where the internal space is limited, and the trouble of mounting the power supply line 7a in the vehicle 10 can be reduced. The system 1a can be easily installed in the vehicle 10 as compared with the first embodiment.

以上、本発明の実施形態を説明したが、上記実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。上記実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行なうことができる。上記実施形態及びその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。   As mentioned above, although embodiment of this invention was described, the said embodiment was shown as an example and is not intending limiting the range of invention. The above embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The above-described embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof, as long as they are included in the scope and gist of the invention.

上記実施形態では、ルームミラー３に設けられる受電コイル９は、ルームミラー３の回動中心を含む領域、すなわち取り付け軸３ｂの近傍に設けられる構成を例示したが、受電コイル９はルームミラー３上の任意の位置に配置されればよい。例えば、受電コイル９を、送電コイル８，８ａと対向するルームミラー３の面の全域（たとえばルームミラー３の長手方向である左右幅方向の全域）に亘るように設け、送電コイル８，８ａに対する受電コイル９の投影面積を増大させて、ワイヤレス給電の効率を向上させるよう構成してもよい。   In the above embodiment, the power receiving coil 9 provided in the room mirror 3 is exemplified as a configuration provided in a region including the rotation center of the room mirror 3, that is, in the vicinity of the attachment shaft 3b. It suffices to be arranged at any position. For example, the power receiving coil 9 is provided so as to cover the entire area of the surface of the room mirror 3 facing the power transmission coils 8 and 8a (for example, the entire area in the left-right width direction which is the longitudinal direction of the room mirror 3). The projected area of the power receiving coil 9 may be increased to improve the efficiency of wireless power feeding.

また、送電コイル８，８ａと受電コイル９との対向の度合が正対（送電コイル８，８ａ及び受電コイル９の中心軸が同一となる状態）に近づくように、送電コイル８，８ａ及び受電コイル９のうち少なくとも一方の軸方向を調整して設置することで、送電コイル８，８ａに対する受電コイル９の投影面積を増大させて、ワイヤレス給電の効率を向上させるよう構成してもよい。   In addition, the power transmission coils 8 and 8a and the power reception coil 9 are arranged so that the degree of opposition between the power transmission coils 8 and 8a and the power reception coil 9 approaches a correct pair (a state where the central axes of the power transmission coils 8, 8a and the power reception coil 9 are the same). By arranging and adjusting at least one of the coils 9 in the axial direction, the projected area of the power receiving coil 9 on the power transmitting coils 8 and 8a may be increased to improve the efficiency of wireless power feeding.

また、第一実施形態としてフロントガラス２の上方に配置されたルーフ部４に送電コイル８が設けられる構成と、第二実施形態としてフロントガラス２の下方に配置されたインパネ部１１に送電コイル８ａが設けられる構成とを例示したが、送電コイルは、受電コイル９に非接触状態で電力を伝送可能な車両１０内の任意の位置に設けられていればよく、ルーフ部４やインパネ部１１以外でもよい。   In addition, a power transmission coil 8 is provided on the roof portion 4 disposed above the windshield 2 as the first embodiment, and a power transmission coil 8a is disposed on the instrument panel portion 11 disposed below the windshield 2 as the second embodiment. However, it is sufficient that the power transmission coil is provided at any position in the vehicle 10 that can transmit power to the power reception coil 9 in a non-contact state, except for the roof portion 4 and the instrument panel portion 11. But you can.

１，１ａ ワイヤレス給電システム
２ フロントガラス
３ ルームミラー
３ｂ 取り付け軸
４ ルーフ部
５ Ａピラー部
６ 電源ユニット
７，７ａ 給電線
８，８ａ 送電コイル（送電部）
９ 受電コイル（受電部）
１０ 車両
１１ インパネ部（インストルメントパネル部） DESCRIPTION OF SYMBOLS 1,1a Wireless electric power feeding system 2 Windshield 3 Room mirror 3b Mounting shaft 4 Roof part 5 A pillar part 6 Power supply unit 7, 7a Feed line 8, 8a Power transmission coil (power transmission part)
9 Power receiving coil (power receiving unit)
10 Vehicle 11 Instrument panel (instrument panel)

Claims (5)

車両のフロントガラスに取り付けられたルームミラーに設けられる受電部と、
前記受電部に非接触状態で電力を伝送可能な前記車両内の位置に設けられる送電部と、
を備え、
前記受電部により受電された前記電力を前記ルームミラー内の各種装置に供給することを特徴とする車両用ルームミラーのワイヤレス給電システム。 A power receiving unit provided in a rearview mirror attached to the windshield of the vehicle;
A power transmission unit provided at a position in the vehicle capable of transmitting power in a non-contact state to the power reception unit;
With
A wireless power feeding system for a vehicle rearview mirror, wherein the power received by the power receiving section is supplied to various devices in the rearview mirror. 前記送電部が、前記車両の前記フロントガラスの上方に配置されたルーフ部に設けられることを特徴とする、請求項１に記載の車両用ルームミラーのワイヤレス給電システム。   The wireless power feeding system for a vehicle rearview mirror according to claim 1, wherein the power transmission unit is provided in a roof unit disposed above the windshield of the vehicle. 前記送電部が、前記車両の前記フロントガラスの下方に配置されたインストルメントパネル部に設けられることを特徴とする、請求項１に記載の車両用ルームミラーのワイヤレス給電システム。   The wireless power feeding system for a vehicle rearview mirror according to claim 1, wherein the power transmission unit is provided in an instrument panel unit disposed below the windshield of the vehicle. 前記ルームミラーは、取り付け軸によって前記フロントガラスに回動可能に支持されており、
前記受電部が、前記ルームミラーの回動中心を含む領域に設けられることを特徴とする、請求項１〜３のいずれか１項に記載の車両用ルームミラーのワイヤレス給電システム。 The room mirror is rotatably supported on the windshield by a mounting shaft,
The wireless power feeding system for a vehicle rearview mirror according to any one of claims 1 to 3, wherein the power reception unit is provided in a region including a rotation center of the rearview mirror. 前記受電部が、前記送電部と対向する前記ルームミラーの面の全域に亘り設けられることを特徴とする、請求項１〜４のいずれか１項に記載の車両用ルームミラーのワイヤレス給電システム。
The wireless power feeding system for a vehicle rearview mirror according to any one of claims 1 to 4, wherein the power receiving unit is provided over the entire surface of the room mirror facing the power transmission unit.
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