JP2014050127A - Display system for non-contact power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display system for non-contact power supply system capable of increasing the user friendliness as a small size electric apparatus.SOLUTION: The display system for non-contact power supply system includes a display unit 24 that visually displays a piece of image information transmitted from an electric shaver as a target of non-contact power supply. The electric shaver includes: a power reception unit; an authentication information holder; an imaging unit; and a first wireless communication unit. A power transmission unit 20 includes: a second wireless communication unit 32; an authentication circuit 214; and a display unit 24. The power transmission unit 20 transmits power when the received authentication information represents the electric shaver authenticated by the authentication circuit 214, and the display unit 24 visually displays the image information transmitted from the imaging apparatus of the electric shaver in real time manner.

Description

  The present invention relates to a display system for a non-contact power feeding system that displays an image captured by a small electric device fed from the non-contact power feeding system.

  2. Description of the Related Art Conventionally, as the above-mentioned small electric devices, electric devices that are operated by a user with one hand mainly for the maintenance of their own body, such as an electric razor, an electric toothbrush, and various beauty instruments, are known. In general, a small electric device is often used by a user while confirming a use state, that is, a care state. However, since there are some small electrical devices in which it is difficult for the user to check the usage state, it is often performed that the user visually recognizes such a small electrical device or a portion of the small electrical device through a mirror. . However, even if a mirror is used, there are some parts that the user cannot fully see. Thus, Patent Document 1 describes an example of a small electric device that can improve the visibility of the user with respect to the usage range of the small electric device.

  The small electric device described in Patent Document 1 is a laser beauty treatment device. This laser beauty treatment device includes a power supply unit to which an external power supply is connected, a laser light source and an optical system that irradiates a laser beam to the processing site, an image sensor that images the processing site, and image data obtained by imaging And a communication unit for transmitting. In addition, a digital image device having a liquid crystal monitor is communicably connected to the laser beauty treatment device. Then, the laser beauty processor transmits the imaged image data of the site to be processed to the digital image device, and the digital image device displays the transmitted image data on the liquid crystal monitor. Thereby, the user can visually recognize the to-be-processed site | part to which a laser is irradiated with a laser beauty treatment device via a liquid crystal monitor.

JP 2003-180708 A JP 2012-29527 A

  The orientation of the small electric device (laser beauty treatment device) described in Patent Document 1 varies greatly depending on the use site and use mode. For this reason, every time the direction of the small electric device is changed, there is an undeniable possibility that the power cord may be bothered by the user and the degree of freedom in using the small electric device may be restricted.

  Therefore, in recent years, it has been studied to adopt a non-contact power feeding system that supplies power to a small electric device in a non-contact manner. As a non-contact power supply system, for example, a system as described in Patent Document 2 is known.

  The system described in Patent Document 2 is an electric lock system. The electric lock system is provided with a door frame and an opening / closing door. The door frame is provided with a power supply unit for transmitting power in a contactless manner. The open / close door is provided with a power receiving unit for receiving power in a non-contact manner and a key authenticating device that is operated by the power output from the power receiving unit. That is, the key authentication device for the opening / closing door is activated by the electric power transmitted from the power supply unit of the door frame in a non-contact manner, and the authentication processing of the authentication handset for the opening / closing door is performed.

  However, the non-contact power feeding system such as the electric lock system described in Patent Document 2 requires a certain size for the structure for transmitting electric power in a non-contact manner. Difficult to do.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display system for a non-contact power feeding system that can further improve convenience as a small electric device. is there.

  The display system for a non-contact power feeding system of the present invention is a display system for a non-contact power feeding system including a display device that displays image information transferred from a small electrical device that is a target for non-contact power feeding, The small electric device includes a power receiving device that receives power transmitted from the power transmitting device of the non-contact power feeding system in a non-contact manner, an authentication information holding unit that holds its own authentication information, and a portion on which the small electric device acts. An image capturing apparatus that captures an image; and a first communication apparatus that wirelessly transmits the held authentication information and the captured image information. The power transmission apparatus of the non-contact power feeding system includes: A second communication device that receives authentication information and image information transmitted by wireless communication from the device, an authentication device that authenticates the received authentication information of the small electrical device, and the display device Power transmission on condition that the received authentication information is a small electric device authenticated by the authentication device, and real-time image information sent from the imaging device of the small electric device to the display device It is characterized by being displayed in a visible manner.

-In this display system for non-contact electric power feeding systems, it is preferable that the said display apparatus displays an image by projecting an image outside.
-In this display system for non-contact electric power feeding systems, it is preferable that the said display apparatus has an image display part and the mirror surface which can permeate | transmit the image displayed on this image display part.

-In this display system for non-contact electric power feeding systems, it is preferable that the display device also displays information indicating that power is being transmitted.
-In this display system for non-contact electric power feeding systems, it is preferable that the display device displays image information transmitted from the small electric device in a visible manner in synchronization with the electric power feeding to the small electric device. .

  -In this display system for non-contact electric power feeding systems, it is preferable that the said small electric equipment has a power generation part which generate | occur | produces power by specific operation, and uses the electric power which the said power generation part generated for transmission of the said authentication information.

  -In this display system for non-contact electric power feeding systems, it is preferable that the said small electric equipment has a power generation part which produces | generates a body temperature, and uses the electric power which the said power generation part generated for transmission of the said authentication information.

  -In this display system for non-contact electric power feeding systems, it is preferable that the said display apparatus is provided in a washstand, and the power transmission coil for electric power transmission is arrange | positioned along the mirror provided in this washstand.

  -In this display system for non-contact electric power feeding systems, it is preferable that the said display apparatus is provided in a bathroom, and the power transmission coil for electric power transmission is arrange | positioned along the mirror provided in this bathroom.

  -In this display system for non-contact electric power feeding systems, it is preferable to heat-generate the said power transmission coil and to keep a mirror surface warm.

  The present invention can provide a display system for a non-contact power feeding system that can further improve convenience as a small electric device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the small electric equipment used for 1st Embodiment which actualized the display system for non-contact electric power feeding of this invention, Comprising: (a) is a schematic diagram of a front side, (b) is a back surface side. FIG. It is a figure which shows typically the projector type power transmission apparatus in the embodiment, (a) is a top view, (b) is a perspective view of the front side. The block diagram which shows schematic structure of a small electrical equipment in the embodiment. In the same embodiment, the block diagram which shows schematic structure of a power transmission apparatus. The sequence diagram which shows the operation | movement order of a display system in the embodiment. The sequence diagram which shows the operation | movement order of a display system in the embodiment. The schematic diagram of the front side which shows typically the power transmission apparatus provided in the washstand about the power transmission apparatus as 2nd Embodiment which actualized the display system for non-contact electric power feeding of this invention. In the same embodiment, the block diagram which shows schematic structure of a power transmission apparatus. The sequence diagram which shows the operation | movement order of a display system in the embodiment. The sequence diagram which shows the operation | movement order of a display system in the embodiment. The schematic diagram of the front side which shows typically the power transmission apparatus provided in the bathroom about the power transmission apparatus as other embodiment which actualized the display system for non-contact electric power feeding of this invention.

(First embodiment)
Hereinafter, a first embodiment of a display system for contactless power feeding according to the present invention will be described with reference to FIGS. First, the outline of the display system for contactless power feeding in the present embodiment will be described with reference to FIGS. 1 and 2.

The display system for non-contact power feeding includes a small electrical device (power receiving device) 10 and a power transmitting device 20.
As shown in FIG. 1, a small electric device (power receiving device) 10 is an electric razor 10 used for caring for the body. The electric razor 10 receives power transmitted from the power transmission device 20 by electromagnetic induction by the power receiving coil 111. The electric razor 10 uses the electric power received by the power receiving coil 111 as electric power for operating the action unit 121 including the “razor”, the image pickup device 131 as an image pickup apparatus constituting the small camera, and the like. Specifically, the electric razor 10 includes a power switch 14, an image sensor 131, a communication antenna 313 for wireless communication, and a power receiving coil 111 for receiving power in a non-contact manner. In the electric razor 10, when the power switch 14 is operated, the action unit 121, the image sensor 131, and the like operate, and the image sensor 131 captures an image of a portion that is processed by the action unit 121. Then, the electric razor 10 transmits a communication signal including image data as image information corresponding to the image captured by the image sensor 131 via the communication antenna 313.

  As shown in FIG. 2, the power transmission device 20 has a function of projecting an image to the outside, that is, a so-called projector function. The power transmission device 20 includes a projection lens 241 that projects an image to the outside, a communication antenna 323 for wireless communication, and a power transmission coil 211 for transmitting power without contact. The power transmission device 20 performs non-contact power feeding by electromagnetic induction from the power transmission coil 211. Thereby, the power transmission apparatus 20 supplies the electric razor 10 with electric power necessary for its operation. In addition, the power transmission device 20 receives a communication signal including image data transmitted from the electric razor 10 by the communication antenna 323, and transmits an image based on the image data included in the received communication signal via the projection lens 241. Projecting onto a projection surface 27 such as an external screen. Projection onto a projection surface 27 such as a screen makes it easy to enlarge a projected image even if the projector is small. Further, since the image can be easily enlarged, it is possible to provide an image having a size that can be easily viewed by a person with low vision or an elderly person.

  The power transmission device 20 and the electric razor 10 are arranged at a distance that allows contactless power feeding from the power transmission device 20 to the electric razor 10. Accordingly, it is possible to easily adjust the image display by operating the power transmission device 20 while using the electric razor 10.

Next, details of the electric razor 10 and the power transmission device 20 will be described with reference to FIGS. 3 and 4.
As shown in FIG. 3, the electric razor 10 includes a power receiving unit 11 as a power receiving device in non-contact power feeding and an operation unit 12 as a load that drives the action unit 121. The electric razor 10 includes an imaging unit 13 that images the outside and a first wireless communication unit 31 as a first communication device that wirelessly communicates with the power transmission device 20. Further, the electric razor 10 is electrically connected to the power switch 14 operated by the user, the self-power generation unit 15 as a power generation unit to which the operation of the power switch 14 is transmitted, and the units 11 to 15, 31. The first control circuit 16 is configured.

  The first control circuit 16 controls various operations of the electric razor 10. The first control circuit 16 includes a microcomputer including an arithmetic device, a volatile memory, a nonvolatile memory, and the like. The nonvolatile memory stores a program executed by the first control circuit 16 and various data used when performing various determination processing operations. The non-volatile memory may store authentication information and identification information of the electric shaver 10 itself. The 1st control circuit 16 acquires the state of each unit 11-15, and 31 connected. The first control circuit 16 gives necessary instructions to the units 11 to 15 and 31. The first control circuit 16 can make a predetermined determination according to the acquired states of the units 11 to 15 and 31 and instruct the units 11 to 15 and 31 to perform necessary processing. For example, the first control circuit 16 can perform power on / off control, that is, so-called on / off control to the units 11 to 13 and 31. In addition, for example, the first control circuit 16 can instruct each unit to perform various processes necessary for the power receiving process by the power receiving unit 11.

  The power receiving unit 11 receives power transmitted in a non-contact manner and supplies it to the units 12, 13, etc. in the electric razor 10. The operation of the power receiving unit 11 is controlled by the first control circuit 16.

  The power receiving unit 11 includes a power receiving coil 111 that receives power without contact, and a rectifier circuit 112 that is electrically connected to the power receiving coil 111. The power receiving unit 11 includes an authentication circuit 113 that authenticates power feeding from the power transmission device 20 to the electric razor 10 and a power control circuit 114 that adjusts the power supplied into the electric razor 10.

  The power receiving coil 111 is linked to the magnetic flux transmitted from the power transmission device 20, generates an alternating current corresponding to the magnetic flux, and outputs the generated alternating current to the rectifier circuit 112. The power receiving coil 111 is formed as a planar coil. The power receiving coil 111 includes a plurality of circular portions arranged so as to gradually expand from the inside to the outside on a plane, and the circular portions are arranged in parallel to a plane extending in the longitudinal direction of the electric shaver 10. The diameter of the power reception coil 111 is smaller than the diameter of the power transmission coil 211. The power receiving coil 111 may have a core in the coil.

  The rectifier circuit 112 rectifies the alternating current input from the power receiving coil 111 into a direct current and outputs the direct current to the load (operation unit) 12 or the like. The rectifier circuit 112 includes a rectifier bridge formed by combining four diodes, and a capacitor that smoothes the current that has passed through the rectifier bridge.

  When the authentication circuit 113 detects that the power transmission device 20 is a power supply device that is compatible with the power reception unit 11 and the power transmission device 20 is in a power-transmittable state, the authentication circuit 113 transmits a power request signal from the electric razor 11 to the power transmission device 20. . This prevents the power transmission device 20 that has not been authenticated by the authentication circuit 113 from supplying power to the electric razor 10 inadvertently. For example, the authentication circuit 113 receives a standby state signal transmitted from the first wireless communication unit 31 by the power transmission device 20. When the authentication circuit 113 detects from the received standby state signal that the electric razor 10 is compatible with the power transmission device 20 and that the power transmission device 20 is ready for power supply, the authentication circuit 113 starts transmission from the first wireless communication unit 31 to the power transmission device. A power request signal is transmitted to 20. Thereby, power feeding from the power transmission device 20 is started, and power is supplied into the electric shaver 10 from the power receiving unit 11 that has received power. On the other hand, when the authentication circuit 113 cannot detect that the power transmission device 20 is compatible with the power reception unit 11 or that the power transmission device 20 is in a power-transmittable state, power is transmitted from the first wireless communication unit 31 to the power transmission device 20. Do not send a request signal. For this reason, the power feeding from the power transmission device 20 is not started, and the power receiving unit 11 cannot supply power into the electric shaver 10.

  The power control circuit 114 controls the amount of power supplied from the rectifier circuit 112 into the electric razor 10. For example, the power control circuit 114 adjusts the magnitude of AC power supplied from the power receiving coil 111 to the rectifier circuit 112 by adjusting sensitivity of the power receiving coil 111 or the like. As a result, the power control circuit 114 adjusts the amount of DC power output from the rectifier circuit 112 and the like.

  That is, the power receiving unit 11 rectifies the electric power generated in the power receiving coil 111 by the rectifier circuit 112, converts it into direct current, and supplies it to the operation unit 12 and the like. The detection of the authentication result by the authentication circuit 113 and the control of the supplied power by the power control circuit 114 are performed as required by an instruction from the first control circuit 16.

  The operation unit 12 includes an electric motor, and the electric motor is driven by the electric power supplied from the power receiving unit 11 to operate a “razor” (action unit 121) that performs care of the body. The operation unit 12 drives the electric motor in accordance with an instruction from the first control circuit 16. That is, the first control circuit 16 instructs the operation unit 12 whether or not to drive the electric motor according to the state of the power switch 14.

  The imaging unit 13 is supplied with power from the power receiving unit 11. The imaging unit 13 outputs the captured image to the first wireless communication unit 31. The imaging unit 13 includes an imaging element 131 made of a semiconductor including an imaging lens, and an image processing circuit 132 that processes data captured by the imaging element 131 to generate predetermined image data.

  The imaging element 131 is installed on the body of the electric razor 10 so that the imaging direction is directed toward the action unit 121. For this reason, the imaging element 131 can photograph a part including the part of the body surface (skin) on which the action unit 121 acts and the part of the body surface (skin). The image sensor 131 is constituted by a CCD image sensor. The image sensor 131 operates with the electric power supplied from the power receiving unit 11. The image sensor 131 receives an image input from the outside via an imaging lens or the like, and outputs data corresponding to the received image to the image processing circuit 132. Note that the body of the electric razor 10 and the image sensor 131 may have a light source that illuminates the imaged portion in order to improve image quality.

  The image processing circuit 132 performs image processing on data input from the image sensor 131 in real time to generate image data, and outputs the generated image data to the first wireless communication unit 31. The image processing circuit 132 may perform color correction, demosaic processing, gradation correction (γ correction), YC separation processing, and the like as image processing.

  The first wireless communication unit 31 includes an image encoder 311 that encodes image data, a communication circuit 312 that modulates and demodulates a communication signal, and a communication antenna 313 for wireless communication. A known method is applied to the wireless communication. In other words, for wireless communication, for example, ZigBee ("ZIGBEE" is a registered trademark), Bluetooth (registered trademark), Wi-Fi, specific low-power wireless, infrared communication, and wireless communication such as Z-Wave are used. Can be used.

  The image encoder 311 converts the image data input from the imaging unit 13 into a communication signal suitable for wireless communication, and outputs the communication signal to the communication circuit 312. Examples of the conversion of image data in the image encoder 311 include compression and encryption.

  The communication circuit 312 can exchange communication signals with the power transmission device 20 by wireless communication. The communication circuit 312 transmits a communication signal including image data and the like to the power transmission device 20. Further, the communication circuit 312 has each communication signal including identification information of the electric razor 10 for the power transmission device 20, authentication information for causing the power transmission device 20 to authenticate power feeding, a power request signal, and information indicating a power reception status. Can also be sent. The authentication information and identification information of the electric razor 10 itself may be stored in the non-volatile memory of the first wireless communication unit 31 as an authentication information holding unit, or input from the first control circuit 16. Also good.

  In addition, the communication circuit 312 is used for each communication such as a standby state signal indicating that power can be supplied from the power transmission device 20 and a power supply signal indicating that power is supplied based on an authenticated result as a power supply target. A signal can be received.

  The communication antenna 313 is an antenna capable of short-range communication between the power transmission device 20 and the electric razor 10. Since the electric razor 10 cannot specify the relative positional relationship with respect to the power transmission device 20 during use, the communication antenna 313 has a wide directivity.

  The power switch 14 is operated by the user to operate the electric razor 10. The power switch 14 has a movable part that moves mechanically by a specific operation by the user. The movable part may be pushed or slid by a user's specific operation. Since the self-power generation unit 15 is mechanically connected to the movable part, the mechanical movement of the movable part is transmitted to the self-power generation unit 15.

  The self-generating unit 15 generates a minute electric power according to the mechanical movement transmitted from the power switch 14 and supplies the generated minute electric power to the first wireless communication unit 31. The self-power generation unit 15 has power generation elements such as piezoelectric elements and vibration power generation elements. Therefore, the self-power generation unit 15 can convert the mechanical force transmitted from the power switch 14 into electric energy by the power generation element. The electric power obtained by the power generation element is very small. Therefore, it is preferable to secure power for operating the first wireless communication unit 31 by power generation of the self-power generation unit 15 by operating the power switch 14 a plurality of times until contactless power feeding is started.

  For example, when the power switch 14 is a push-in switch, the force to be pressed is an instantaneous force. For this reason, the movable part of the power switch 14 can be pushed into two stages, the push up to the first stage is used for power generation, and the push up to the second stage is used as a switch for starting the operation of the operation unit 12. May be. In this way, the self-power generation unit 15 can generate power by repeatedly pushing the power switch 14 up to the first stage until the non-contact power feeding is started.

  As shown in FIG. 4, the power transmission device 20 has functions of a power transmission unit 21 for power transmission, a power supply circuit 22 to which power is input from the outside, a power switch 23 for power on / off, and a projector. It comprises a display unit 24 as a display device. The power transmission device 20 includes a second wireless communication unit 32 as a second communication device for wireless communication, and a second control circuit 25 electrically connected to the units 21, 24, 32, and the like. It is configured.

  The power switch 23 is a switch for switching on / off the power of the power transmission device 20. The power switch 23 may be operated automatically or by a user. The power supply circuit 22 starts supplying power into the power transmission device 20 when a signal indicating that a power-on operation has been performed from the power switch 23. That is, the power transmission device 20 is turned on by operating the power switch 23. The power switch 23 may open and close a circuit between the commercial power supply and the power supply circuit 22.

  The power supply circuit 22 has a rectifier circuit and a DC / DC converter. The power supply circuit 22 receives AC power from an external commercial power supply according to the operation of the power switch 23 and rectifies the rectifier circuit. The power supply circuit 22 converts the rectified DC voltage into a desired voltage by a DC / DC converter, and then supplies the DC voltage to the units 21, 24, 32, the second control circuit 25, and the like.

  The second control circuit 25 controls various operations of the power transmission device 20. The second control circuit 25 includes an arithmetic device and a microcomputer including a volatile memory and a nonvolatile memory. The nonvolatile memory stores a program executed by the second control circuit 25 and various data used when performing various determination processing operations.

  The second control circuit 25 acquires the state of each unit 21, 24, 32 to be connected. The second control circuit 25 instructs each unit 21, 24, 32 to perform necessary processing. The second control circuit 25 can instruct each unit 21, 24, 32 to perform necessary processing according to the acquired state of each unit 21, 24, 32. For example, the second control circuit 25 can perform on / off control of each unit 21, 24, 32. For example, the second control circuit 25 can instruct the power transmission unit 21 to perform various processes necessary for power transmission.

  The second wireless communication unit 32 includes an image decoder 321 that decodes image data, a communication circuit 322 that modulates / demodulates a signal for wireless communication, and a communication antenna 323 for wireless communication. Note that a known method can be applied to the wireless communication. In other words, there are no restrictions on the standards and the like for wireless communication. For example, ZigBee (“ZIGBEE” is a registered trademark), Bluetooth (registered trademark), Wi-Fi, specific low power wireless, infrared communication, Z -Wireless communication such as Wave can be used. In the present embodiment, the first and second wireless communication units 31 and 32 communicate with each other according to the ZigBee standard (“ZIGBEE” is a registered trademark).

  The image decoder 321 performs predetermined processing on the image data input from the communication circuit 322 and outputs the processed image data to the display unit 24. For example, the image decoder 321 restores (decompresses) the compressed data or decrypts the encrypted data as predetermined processing. That is, the image decoder 321 converts the communication signal input from the communication circuit 312 into image data that can be displayed on the display unit 24.

  The communication circuit 322 can exchange communication signals with the electric razor 10 by wireless communication. The communication circuit 322 receives from the electric shaver 10 each communication signal including identification information, authentication information, a power request signal, information indicating a power reception status, a supply stop request signal, image data, and the like.

In addition, the communication circuit 322 transmits to the electric shaver 10 each communication signal including a standby state signal indicating that power can be supplied and a power supply signal indicating that power is being supplied.
The communication antenna 323 is an antenna capable of short-range communication between the power transmission device 20 and the electric razor 10. Since the direction in which the power transmission device 20 transmits power is determined, the communication antenna 323 has directivity in the direction in which the power transmission device 20 transmits power. Note that the communication antenna 323 may have wide directivity.

  The power transmission unit 21 supplies electric power to the electric shaver 10 as a small electric device to be supplied in a non-contact manner. The operation of the power transmission unit 21 is controlled by the second control circuit 25.

  The power transmission unit 21 includes the power transmission coil 211 that transmits power and a power transmission circuit 212 that is electrically connected to the power transmission coil 211. The power transmission unit 21 includes an authentication circuit 214 that permits / restricts power supply to a power supply target and a power control circuit 213 that adjusts the power to be transmitted.

  The power transmission circuit 212 converts the DC power input from the power supply circuit 22 into AC power and supplies the AC power to the power transmission coil 211. The power transmission circuit 212 includes a known full bridge circuit, and converts DC power input to the full bridge circuit into AC power that excites the power transmission coil 211.

  The power transmission coil 211 is formed as a planar coil having a substantially square shape in plan view, and is disposed along the planar outer surface of the casing of the power transmission device 20 (see FIG. 2). The power transmission coil 211 may be formed as a planar coil having a substantially circular shape in plan view. The power transmission coil 211 has a predetermined number of coil turns, and the coil diameter is larger than the diameter of the power reception coil 111 of the electric shaver 10. The power transmission coil 211 generates a magnetic flux corresponding to an alternating current having a predetermined frequency input from the power transmission circuit 212, and outputs the generated magnetic flux in a direction orthogonal to the power transmission coil 211.

  The authentication circuit 214 is a circuit that determines whether or not a small electrical device is a power supply target. The authentication circuit 214 receives a power request signal for the electric shaver 10 from the second wireless communication unit 32. The authentication circuit 214 determines whether or not the electric razor 10 is a power supply target based on the authentication information included in the power request signal. In the determination, the input authentication information is compared with the authentication information set in the authentication circuit 214, or it is determined whether the specification of the small electric device included in the input authentication information is suitable as a power supply target. It is done by things. The authentication circuit 214 permits the operation of the power transmission circuit 212 when authenticating the electric razor 10 as a power supply target based on the authentication information. Therefore, when the authentication circuit 214 authenticates the authentication information, the power transmission circuit 212 operates, power is transmitted from the power transmission coil 211, and power is supplied to the electric razor 10. On the other hand, if the authentication circuit 214 does not authenticate the authentication information, the power transmission circuit 212 does not operate, so power is not transmitted from the power transmission coil 211 and power is not supplied to the electric razor 10.

  Further, when the authentication circuit 214 receives the supply stop signal transmitted from the electric razor 10 via the second wireless communication unit 32, the authentication circuit 214 cancels the authentication of the electric razor 10 as a power supply target and stops the supply of power.

Further, the authentication circuit 214 causes the second wireless communication unit 32 to transmit a standby state signal when the power supply is stopped.
The power control circuit 213 controls the power supplied from the power transmission circuit 212 to the power transmission coil 211. For example, the power control circuit 213 adjusts the magnitude and the like of the AC power that excites the power transmission coil 211 by adjusting the duty ratio and frequency of the AC power output from the power transmission circuit 212. Thereby, the power control circuit 213 adjusts the amount of power supplied from the power transmission coil 211 in a contactless manner.

  In other words, the power transmission unit 21 transmits power in a non-contact manner by the magnetic flux of the power transmission coil 211 generated based on the AC power generated by the power transmission circuit 212. Note that, according to an instruction from the second control circuit 25, authentication of the power supply target by the authentication circuit 214 and control of the amount of power transmitted by the power control circuit 213 are performed.

The display unit 24 is a projector, and includes a projection lens 241, a display unit 242, an image processing circuit 243, and a projection image adjustment unit 244.
The display unit 242 is an optical device that converts image data into an image and projects it, and has a known projector configuration. For example, the display unit 242 is provided with an LCD (liquid crystal display) corresponding to R, G, and B, a prism, various mirrors, an ultra-high pressure mercury lamp, and a PBS plate that is a plate-type change beam splitter. It has been. Then, the display unit 24 outputs an image displayed on the LCD based on the image data from the projection lens 241 and projects it on the projection surface 27.

  The image processing circuit 243 performs predetermined processing on the image data input from the second wireless communication unit 32 and outputs the processed image data to the display unit 242. For example, the image processing circuit 243 divides the image data into the three primary colors (R, G, B) of light and outputs them to the corresponding LCD of the display unit 242.

  The projection image adjustment unit 244 operates the projection lens 241 to adjust the focus (focus) and display size (size) of the projection image. The adjustment may be performed automatically or manually.

  The display unit 24 displays a predetermined image such as a start image when the power is turned on, and displays the image data or the like when image data or the like is input. In addition, the power transmission device 20 can display “power feeding” as information indicating that power is being transmitted in an image projected from the display unit 24 during power transmission. Note that the display of “power feeding” may be an image including the characters “power feeding” or only an image meaning “power feeding” as long as the user can see.

  The display unit 24 has a plurality of display layout patterns of an image to be projected, and projects an image with a display layout selected from these patterns. This pattern may be selected automatically or manually.

Next, the operation of the display system for the non-contact power feeding system will be described with reference to FIGS.
First, the operation until the electric razor 10 starts processing will be described.

  As shown in FIG. 5, when the power transmission device 20 is turned on (ON) (step S1), the power transmission device 20 operates (ON) the display unit 24 and the second wireless communication unit 32 (step S2). ). When the power is turned on, the display unit 24 displays a predetermined image such as a start image. The power transmission device 20 periodically transmits a “standby state signal” from the second wireless communication unit 32 (step S3). The “standby state signal” is a signal indicating that the power transmission device 20 is in a state where power can be supplied. The power transmission device 20 monitors whether or not a “power request signal” that is a response to the “standby state signal” is received in addition to transmitting the “standby state signal”.

  On the other hand, in the electric razor (power receiving device) 10, the self-power generation unit 15 generates power by the user's operation of the power switch 14 (step S4). The electric power generated by the self-power generation unit 15 is supplied to the first wireless communication unit 31 so that the first wireless communication unit 31 is activated (ON) (step S5). The first wireless communication unit 31 operating with the electric power from the self-generating unit 15 monitors whether the “standby state signal” is received (step S6). When the first wireless communication unit 31 receives the “standby state signal”, the first wireless communication unit 31 sends the received “standby state signal” to the authentication circuit 113. Then, the authentication circuit 113 authenticates the power transmission device 20 based on the “standby state signal”. When authenticating the power transmission device 20, the authentication circuit 113 transmits a “power request signal” from the first wireless communication unit 31 in response to the “standby state signal” (step S7). The “power request signal” is a signal for allowing the electric razor 10 to be approved as a power supply target, and is a signal including authentication information.

  When receiving the “power request signal” transmitted from the electric razor 10 (step S8), the power transmission device 20 starts power supply from the power transmission unit 21 (step S9). That is, the power transmission device 20 transmits power from the power transmission coil 211 of the power transmission unit 21 when authenticating the electric razor 10 as a power supply target based on the authentication information of the electric razor 10 included in the “power request signal”. When power transmission is started, the power transmission device 20 displays the characters “power feeding” on the image projected by the projector as information indicating that power is being transmitted (step 20). Thereby, the user can know that the power transmission apparatus 20 has started non-contact power feeding to the electric shaver 10.

  The electric shaver 10 starts to receive power by the power receiving unit 11 when power transmission from the power transmitting device 20 is started (step S11). That is, the electric razor 10 receives the magnetic flux generated by the power transmission coil 211 at the power reception coil 111 and generates electric power. As a result, the power receiving unit 11 supplies power necessary for operation to each unit in the electric shaver 10. That is, the operation unit 12 and the imaging unit 13 operate (ON) by supplying power (step S12). Then, the imaging unit 13 captures an image in the direction of the action portion 121 of the electric razor 10 through the imaging element 131 (step S13). The image captured by the imaging unit 13 is output to the first wireless communication unit 31 as image data. The first wireless communication unit 31 to which the image data has been input performs a predetermined process such as encoding on the image data to generate a communication signal (step S14), and transmits (transmits) the generated communication signal. (Step S15). In addition, the electric shaver 10 transmits the communication signal containing the image data of a real-time image in real time by repeating the process from step S13 to step S15 sequentially.

  When the second wireless communication unit 32 receives the communication signal (step S16), the power transmission device 20 performs a predetermined process such as decoding on the received communication signal, and is included in the communication signal. Data is acquired (step S17). Then, the second wireless communication unit 32 outputs the acquired image data to the display unit 24. When the image data is input, the display unit 24 performs predetermined processing such as data complement processing on the input image data (step S18), and the display unit 242 converts the image into an image, and projects the image. Projecting to the outside through the lens 241 (step S19). In addition, the power transmission apparatus 20 displays the image data which the electric shaver 10 transmits in real time by repeating the process from step S16 to step S19 sequentially. That is, the power transmission device 20 displays the image data sent from the electric razor 10 that has been authenticated as a power supply target in real time, so that authentication for power supply can also be used for real time display.

  In the electric razor 10, the operation unit 12 is driven by a user operation in parallel with the real-time transmission of the captured image (step S20). In other words, when the operation unit 12 operates the action part 121, processing by the action part 121, that is, “razor” with respect to the part on which the electric razor 10 acts is started. And the process to the site | part which acts with the electric shaver 10 and the projection to the site | part which the power transmission apparatus 20 acts on are performed.

Thereby, the user uses the electric razor 10 while viewing the image projected in real time.
Next, the operation | movement which the process by the electric shaver 10 complete | finishes is demonstrated.

  As shown in FIG. 6, the power source of the electric razor 10 is shut off (OFF) by a user operation (step S21). When the power is cut off, the electric razor 10 cuts off the power of the operation unit 12 and the imaging unit 13 (OFF) (step S22). Further, when the electric razor 10 is turned off, the power supply stop request signal is transmitted from the first wireless communication unit 31 (step S23), and after the transmission of the signal, the power supply of the first wireless communication unit 31 is transmitted. Is shut off (OFF) (step S24). Thereby, all the operations of the electric shaver 10 are stopped.

  On the other hand, when the power transmission stop request signal transmitted from the electric razor 10 is received by the second wireless communication unit 32 (step S25), the power transmission device 20 stops the power supply from the power transmission unit 21 (step S26). When the power supply from the power transmission unit 21 is stopped, the power transmission device 20 turns off the display of “power supply in progress” projected on the projector (step S27). Thereby, the user can confirm from the projection image that the power supply to the electric shaver 10 has been stopped. Thereafter, the power transmission device 20 shuts off (OFF) the power of the display unit 24 (step S28), and shuts off (OFF) the power of the second wireless communication unit 32 (step S29). Finally, the power switch 23 of the power transmission device 20 is turned off to stop the power supply to the power transmission device 20 (step S30). Thereby, all operation | movement of the power transmission apparatus 20 stops.

The power switch 23 of the power transmission device 20 may be controlled by the second control circuit 25 so as to be automatically turned off or operated by the user.
As described above, according to the display system for a non-contact power feeding system of the present embodiment, the effects listed below can be obtained.

  (1) The power transmission device 20 displays image data such as a captured image sent from the electric razor 10 in real time on the display unit 24 in real time. In addition, the power transmission device 20 can supply power necessary for the electric shaver 10 from the power transmission device 20 in a contactless manner. That is, the power transmission device 20 can perform both contactless power feeding to the electric razor 10 and display of an image from the electric razor 10 in real time. Thereby, the display system for non-contact electric power feeding systems which can aim at the further improvement of the convenience as the electric shaver 10 can be provided.

  (2) The power transmission device 20 can authenticate the electric razor 10 to which power is to be transmitted, and can transmit electric power to the authenticated electric razor 10. Moreover, the power transmission apparatus 20 projects the real-time image data received from the electric shaver 10 that has been authenticated to transmit power. That is, authentication for the electric razor 10 can be used for real-time display of image data. That is, the power transmission device 20 can regulate the display of the image information from the electric shaver 10 based on the authentication by combining the authentication of the non-contact power supply system and the display of the image data.

  (3) By combining the power transmission unit 21 that requires a certain size for power transmission and the display unit 24 that requires a certain size for displaying an image, each size can be used effectively. Can do. Thereby, the enlargement of the power transmission apparatus 20 which has the power transmission unit 21 and the display unit 24 is suppressed, and the complexity concerning the enlargement and installation of the display system for non-contact electric power feeding systems is suppressed.

  (4) Since the display unit 24 can project an image on an arbitrary place, the degree of freedom of the installation place of the display unit 24 is improved. That is, since the freedom degree of the installation place of the power transmission apparatus 20 provided with the display unit 24 improves, the improvement of the freedom degree of the place which can use the electric shaver 10 is also achieved.

  In addition, if the apparatus projects an image to the outside such as a projector, the projection surface 27 can select a surface such as a wall surface or furniture in addition to the screen, and there are few restrictions on the projection destination, and the image can be easily enlarged. Convenience is improved.

  (5) Since the display unit 24 projects information indicating that power is being transmitted, the user can easily grasp the situation regarding power feeding even while the electric shaver 10 is being used. become able to.

  (6) Even before the authentication in which contactless power feeding is performed, the self-power generation unit 15 of the electric shaver 10 supplies the power necessary for the authentication. Thereby, since it is not necessary to mount a battery or the like on the electric razor 10, the structure of the electric razor 10 is simplified, and the cost can be kept low.

In addition, since the non-contact power supply system can perform power supply after authentication, safety and certainty of power transmission can be improved.
(Second Embodiment)
Next, 2nd Embodiment of the display system for non-contact electric power feeding systems concerning this invention is described with reference to FIGS.

  In this embodiment, it is different from the power transmission apparatus 20 of 1st Embodiment that the power transmission apparatus 20 is provided in the wash basin 2, but the structure of other than that is the same. Therefore, in the following, a configuration different from the first embodiment will be described, and for convenience of description, the same reference numerals are given to the same configuration, and detailed description thereof will be omitted. Note that the electric shaver 10 similar to that in the first embodiment is used as the small electric device.

  As shown in FIG. 7, the washstand 2 includes a power transmission device 20. In the wash basin 2, devices constituting the power transmission device 20 are arranged in a distributed manner. For example, the washstand 2 is provided with a mirror LCD 26 as a mirror at a position facing the upper body of the user, a human sensor 28 for detecting the presence or absence of a person at the top, and a power supply circuit 22 and a second control circuit 25 inside. And units such as the second wireless communication unit 32 are arranged.

Next, the details of the power transmission device 20 will be described with reference to FIG.
As illustrated in FIG. 8, the power transmission device 20 includes a power transmission unit 21, a power supply circuit 22, a human sensor 28, a display unit 24, a second wireless communication unit 32, each unit 21 to 24, 32, and the like. The second control circuit 25 is electrically connected to the second control circuit 25.

  The human sensor 28 is a detector for detecting the presence or absence of a human in the front position of the wash basin 2, and a known detector such as an infrared sensor is used. The human sensor 28 is provided on the upper part of the washstand 2. If human presence / absence can be detected at the front position of the wash basin 2, the human sensor 28 may be provided at a position other than the upper part such as the middle and the lower part of the wash basin 2. It may be provided at a position away from the washstand 2.

The human sensor 28 inputs a detection signal to the power supply circuit 22 when a human is detected.
When the detection signal is input from the human sensor 28, the power supply circuit 22 starts supplying power into the power transmission device 20. That is, the power transmission device 20 is turned on when the human sensor 28 detects a person. In addition, since the power supply circuit 22 operates the human sensor 28, it is preferable to always supply electric power to the human sensor 28 regardless of the detection result of the human sensor 28.

  The display unit 24 includes a mirror LCD 26. The mirror LCD 26 as an image display unit is a liquid crystal display having a surface 261 as a mirror-like mirror surface, and is a metal that acts as a mirror surface (mirror) on the display surface of a transmissive liquid crystal display (LCD) having a backlight. Vapor deposition and special film are attached. Usually, the backlight of the LCD is turned off, and the surface 261 functions as a mirror. On the other hand, when the backlight is turned on, the image displayed on the LCD can be seen from the surface side through the mirror-like surface 261. That is, when the power transmission device 20 is turned off, the mirror LCD 26 functions as a normal mirror. On the other hand, when the power transmission device 20 is turned on and an image is displayed, the portion where the image is displayed functions as a display. Note that an image on the LCD may be displayed on substantially the entire range of the mirror-like surface 261 or may be displayed on a part of the mirror-like surface 261. A portion of the surface 261 that is off the LCD and not displaying an image functions as a mirror.

  Further, a power transmission coil 211 is disposed along the front surface 261 on the rear surface of the mirror LCD 26. Since the power transmission coil 211 is provided in a portion where the user's body is reflected, the electric razor 10 used by the user is naturally arranged at a position close to itself. For this reason, the positional relationship between the power transmission coil 211 and the small electric device is maintained and arranged in a relationship suitable for non-contact power transmission.

Subsequently, the operation of the display system for the non-contact power feeding system will be described with reference to FIGS. 9 and 10.
First, the operation until the electric razor 10 starts processing will be described.

  As shown in FIG. 9, the power transmission device 20 detects the presence or absence of a human in front of the washbasin 2 at a predetermined interval by the human sensor 28 (step S101). And if a user (user) stands in front of the washstand (step S102), the power transmission apparatus 20 will detect that the person is in front of the washstand 2 by the human sensitive sensor 28 (step S103). The power transmission device 20 is turned on (ON) by the human detection by the human sensor 28 (step S104), and activates the second wireless communication unit 32 (step S105). The power transmission device 20 periodically transmits a “standby state signal” from the second wireless communication unit 32 (step S106). The power transmission device 20 monitors whether or not a “power request signal” that is a response to the “standby state signal” is received in addition to transmitting the “standby state signal”.

  On the other hand, in the electric razor (power receiving device) 10, the self-power generation unit 15 generates power by the operation of the power switch 14 by the user (step S110). The electric power generated by the self-power generation unit 15 is supplied to the first wireless communication unit 31 so that the first wireless communication unit 31 is activated (ON) (step S111). The first wireless communication unit 31 operating with the power from the self-generating unit 15 monitors whether the “standby state signal” is received (step S111). When the first wireless communication unit 31 receives the “standby state signal”, the first wireless communication unit 31 sends the received “standby state signal” to the authentication circuit 113. Then, the authentication circuit 113 authenticates the power transmission device 20 based on the “standby state signal”. When authenticating the power transmission apparatus 20, the authentication circuit 113 transmits a “power request signal” from the first wireless communication unit 31 in response to the “standby state signal” (step S112).

  When receiving the “power request signal” transmitted from the electric razor 10 (step S113), the power transmission device 20 operates (ON) the display unit 24 (step S114). Thereby, the start of power supply by the power transmission device 20 and the operation of the display unit 24 are synchronized, and an image is displayed on the mirror LCD 26. That is, when viewed from the user, the mirror LCD 26 changes from a mirror to a display. Then, the power transmission device 20 displays a predetermined image such as a start image on the mirror LCD 26 (step S115). Thus, since the mirror LCD 26 starts displaying an image, the user can know that the power transmission device 20 has started non-contact power feeding to the electric shaver 10.

  Moreover, the power transmission apparatus 20 starts the electric power feeding from the power transmission unit 21 (step S116). That is, the power transmission device 20 transmits power from the power transmission coil 211 of the power transmission unit 21 when authenticating the electric razor 10 as a power supply target based on the authentication information of the electric razor 10 included in the “power request signal”.

  When the transmission of power from the power transmission device 20 is started, the electric razor 10 starts to receive power by the power receiving unit 11 (step S117). When electric power is supplied to the electric razor 10, the operation unit 12 and the imaging unit 13 operate (ON) (step S118). Then, the imaging unit 13 captures an image of the electric razor 10 in the “razor” (action unit 121) direction through the imaging element 131 (step S119). The first wireless communication unit 31 that has input an image captured by the imaging unit 13 as image data performs a predetermined process such as encoding on the image data to generate a communication signal (step S120). A communication signal is transmitted (transmitted) (step S121). In addition, the electric shaver 10 transmits the communication signal containing the image data of a real-time image in real time by repeating the process from step S119 to step S121 sequentially.

  When the second wireless communication unit 32 receives a communication signal (step S122), the power transmission device 20 performs a predetermined process such as decoding on the received communication signal and is included in the communication signal. Data is acquired (step S123). Then, the second wireless communication unit 32 outputs the acquired image data to the display unit 24. When the image data is input, the display unit 24 performs predetermined processing such as data complement processing on the input image data (step S124), and displays the image on the mirror LCD 26 (step S125). In addition, the power transmission apparatus 20 displays the image data which the electric shaver 10 transmits in real time by sequentially repeating the process from step S122 to step S125.

  In the electric razor 10, the operation unit 12 is driven by a user operation in parallel with real-time transmission of the captured image (step S126). That is, when the operation unit 12 operates the action part 121, the process by the action part 121 with respect to the site | part which the electric shaver 10 acts is started. And the process to the site | part which the electric razor 10 acts on, and the projection of the image of the site | part which the power transmission apparatus 20 acts on are performed.

Next, the operation | movement which the process by the electric shaver 10 complete | finishes is demonstrated.
As shown in FIG. 6, the power source of the electric razor 10 is shut off (OFF) by the user's operation (step S130). When the power is cut off, the electric razor 10 cuts off the power of the operation unit 12 and the imaging unit 13 (OFF) (step S131). Further, when the electric shaver 10 is powered off, it transmits a power supply stop request signal from the first wireless communication unit 31 (step S132), and after the transmission of the signal, the power of the first wireless communication unit 31 is transmitted. Is shut off (OFF) (step S133). Thereby, all the operations of the electric shaver 10 are stopped.

  On the other hand, when the power transmission stop request signal transmitted from the electric razor 10 is received by the second wireless communication unit 32 (step S134), the power transmission device 20 stops the power supply from the power transmission unit 21 (step S135). When the power supply from the power transmission unit 21 is stopped, the power transmission device 20 turns off the display of the mirror LCD 26 by shutting off the power supply of the display unit 24 (step S136). The power transmission device 20 may turn off the display unit 24 after the display on the mirror LCD 26 is turned off. Thereby, the end of the power supply of the power transmission device 20 and the end of the display of the display unit 24 are synchronized, and the user can confirm that the power supply to the electric shaver 10 has been stopped by the display of the mirror LCD 26 disappearing. it can. That is, when viewed from the user, the mirror LCD 26 changes from a display to a mirror. Thereafter, the power transmission device 20 shuts off (OFF) the power supply of the second wireless communication unit 32 (step S137). Finally, the power transmission device 20 stops the power supply from the power supply circuit 22 (step S138). Thereby, the power transmission device 20 stops all operations except the operation of the human sensor 28.

Then, the power transmission apparatus 20 repeats detecting the presence or absence of a human in front of the washbasin 2 at a predetermined interval by the human sensor 28 (step S101).
As described above, according to the display system for a non-contact power feeding system of this embodiment, in addition to the effects (1) to (3) and (6) described in the first embodiment, they are listed below. Such effects can be obtained.

  (7) Normally, the mirror LCD 26 can be used as a mirror. When the electric razor 10 transmits image data, the mirror LCD 26 displays an image so as to pass through the mirror surface, so that the image is displayed on the mirror surface and the convenience in using the electric razor 10 is increased. Moreover, since electric power can be transmitted in a non-contact manner to the electric razor 10 used while looking at the mirror, restrictions on using the electric razor 10 are reduced.

  (8) Since an image is displayed on the mirror LCD 26 in synchronization with the power supply to the electric razor 10, the user can easily grasp the situation regarding the power supply to the electric razor 10 based on the display of the image. .

  For example, when the electric razor 10 includes a battery, the user can determine whether the electric razor 10 is operated by the transmission power from the non-contact power feeding system or the battery.

  (9) The power transmission device 20 capable of transmitting power in a non-contact manner can be installed in the washstand 2 where the electric razor 10 is frequently used. That is, on the wash basin 2, an image captured by the electric razor 10 can be displayed. Thereby, the convenience regarding the utilization of the electric shaver 10 by a user improves.

  (10) Since the non-contact power feeding system can be permanently installed in the wash basin 2, it is easy to secure the arrangement place as the system. There is no need to install a display device such as the mirror LCD 26 when the electric razor 10 is used. In addition, since the appearance of the wash basin 2 is maintained as before, the appearance as before can be maintained.

(11) Since the non-contact power supply can maintain the waterproof performance high, the moisture resistance of the electric razor 10 in the washstand 2 with high humidity can be improved.
(Other embodiments)
In addition, each said embodiment can also be implemented with the following aspects.

  When the electric razor 10 has been operating for a predetermined time or more, a warning may be displayed as an image or notified by an alarm sound or the like. Thereby, the improvement of the convenience of a small electric equipment comes to be aimed at.

  In each of the above embodiments, the case where the power receiving coil 111 is a planar coil is illustrated. However, the present invention is not limited to this, and the shape of the power receiving coil is not limited as long as power can be received. For example, a cylindrical structure in which a plurality of circular portions are stacked on each other may be used. Thereby, the receiving coil which adapts to the shape of a small electric equipment is employable. That is, the degree of freedom in designing small electric devices can be improved.

  In each of the above embodiments, the case where the electric razor 10 does not have a storage battery is illustrated, but the present invention is not limited thereto, and the electric razor may be provided with a storage battery. In this case, the storage battery may be charged with the received power. At this time, wireless communication can also be used for managing the state of charge. Thereby, the stability of operation | movement of a small electric equipment comes to improve.

  In each of the above embodiments, the case where the image pickup device 131 is a CCD image sensor has been illustrated. It may be an image sensor. Thereby, the improvement of the design freedom of a small electric equipment is achieved.

  In each of the above embodiments, the case where the image pickup device 131 is provided on the body of the electric razor 10 is illustrated, but the direction of the image pickup device may be changed so that the image pickup direction can be adjusted. . Further, an optical system (lens) for focus adjustment or the like may be provided. Thereby, the convenience of a small electric device is improved.

  In each of the above embodiments, the case where the electric shaver 10 is provided with the imaging unit 13 is illustrated, but this imaging unit may be provided with a camera shake prevention function, an enlargement / reduction function, and the like. Thereby, the convenience of a small electric device is improved.

  In each of the above embodiments, the case where the power transmission circuit 212 includes a full bridge circuit is illustrated, but the present invention is not limited thereto, and the power transmission circuit may include a half bridge circuit. Since the half bridge circuit has a small number of parts, the cost can be suppressed. Thereby, the improvement of the design freedom of a power transmission apparatus comes to be aimed at.

  In the second embodiment, the case where the power transmission device 20 is provided on the washstand 2 is illustrated. However, the present invention is not limited to this, and the power transmission device may be provided in a bathroom, a dresser, or the like if the user uses a small electric device.

  For example, as illustrated in FIG. 11, the bathroom 3 may include a power transmission device 20. In the bathroom 3, devices constituting the power transmission device 20 are distributed. The bathroom 3 is provided with a mirror LCD 26 as a mirror provided in the bathroom 3 at a position facing the upper body of the user. In the bathroom 3, the power supply circuit 22, the second control circuit 25, the second wireless communication unit 32, and the like are arranged in the counter of the bathroom 3. The power transmission coil 211 of the power transmission device 20 is disposed on the back side of the mirror LCD 26. That is, the mirror LCD 26 functions as a mirror when the backlight is turned off. When the user uses the electric razor 10 in front of the mirror LCD 26, the backlight is turned on and an image is displayed on the mirror LCD 26.

  Thereby, electric power can be transmitted to the bathroom 3 where the electric razor 10 is often used without contact, and the power transmission device 20 that can display an image can be installed. That is, an image captured by the electric razor 10 can be displayed in the bathroom 3. Thereby, the convenience regarding the utilization of the electric shaver 10 by a user improves.

Moreover, since the power transmission apparatus 20 is not installed on the table, the appearance of the bathroom 3 is maintained as usual.
Furthermore, since the non-contact power supply can maintain the waterproof performance high, the convenience of the electric shaver 10 in the bathroom 3 can be increased.

  In the second embodiment and other embodiments, the case where the power transmission coil 211 provided on the back surface of the mirror LCD 26 transmits power is illustrated. However, the present invention is not limited to this, and the mirror surface of the mirror LCD can be kept warm by generating heat in the power transmission coil. For example, when the humidity is high, the washstand and the mirror surface of the bathroom are often clouded, but by keeping the mirror surface warm, fogging can be prevented or suppressed. Thereby, the visibility of a mirror surface is ensured and the convenience of a user is improved. Note that the power transmission coil may generate heat by power transmission, or may generate heat separately from power transmission.

  For example, when the power transmission coil generates heat in conjunction with power feeding, the effect of anti-fogging is exhibited in accordance with the use of small electrical equipment. In other words, mirroring of the mirror surface is performed in accordance with the use of the user, and the convenience for using the small electric device is kept high.

  In the second embodiment and other embodiments, the case where the power transmission coil 211 is provided on the back surface of the mirror LCD 26 is illustrated. However, the present invention is not limited to this, and the power transmission coil may be provided along the surface of the mirror as long as it does not interfere with the reflection on the mirror. Further, if the power transmission coil is transparent, it may be provided in a free arrangement on the surface of the mirror. As a result, it is easy to secure the location of the power transmission coil.

  In the second embodiment and other embodiments, the case where the power transmission coil 211 is provided in the mirror LCD 26 is illustrated. However, the present invention is not limited to this, and the power transmission coil may be installed on the wash bowl of the washstand or on the outer periphery of the mirror. Moreover, you may install a relay coil in a wall surface etc. and may perform electric power transmission. Thereby, the design freedom regarding arrangement | positioning of a power transmission coil comes to improve.

  In the second embodiment, the case where the display for displaying a real-time image is the mirror LCD 26 is illustrated. However, a display that displays a real-time image without this function does not have a mirror function, and may be a display provided separately from the mirror. Thereby, the freedom degree of arrangement | positioning of a display comes to improve.

  In the second embodiment, the case where the display unit 24 is the mirror LCD 26 is illustrated. However, the present invention is not limited to this, and the device for displaying an image may be a device other than the mirror LCD as long as it can be used as a mirror when not displaying an image and can be used as a display when displaying an image. As a result, the degree of freedom in designing the transmission apparatus can be improved.

  In each of the above embodiments, the case where the electric razor 10 includes the self-power generation unit 15 that generates power by operating the power switch 14 is illustrated. However, the present invention is not limited to this, and the small electric device may have another power generation structure such as a self-power generation unit as a power generation unit that generates power at the body temperature of the user or the like as long as it can supply electric power necessary for startup. Further, the electric razor may be provided with a plurality of numbers and a plurality of types of self-generating units. Even in this case, when authentication is required for power supply, the self-power generation unit of the small electrical device can cover the power required for authentication. Thereby, since the battery of a small electric equipment etc. can be made unnecessary, the structure of a small electric equipment becomes simple and cost also becomes cheap. Moreover, since power feeding can be performed after authentication, safety related to power transmission is enhanced.

  In each of the above embodiments, the case where the self-power generation unit 15 is provided has been illustrated. However, the present invention is not limited thereto, and the self-power generation unit is not limited thereto. May not be included. Thereby, the improvement of the design freedom of a small electric equipment is achieved.

  In each of the above embodiments, the display unit 24 has been exemplified for displaying a real-time image. In addition to this, the display unit may determine the processing state of the part to which the electric razor acts by using the image processing function, and notify the determination result. For example, the image processing function may recognize a part with a beard, determine that shaving has ended when the electric shaver acts and the area of the beard becomes a predetermined value or less, and notify the fact. In addition, the image processing function compares the current image with the previous image for the image of the same part, and notifies that the shaving has been completed if the difference between the two bearded areas contained in the two images is small. May be. Thereby, the improvement of the convenience of a small electric equipment is achieved.

  In the first embodiment, the case where “power feeding” is notified by an image is illustrated. However, the present invention is not limited to this, and “power feeding” may be notified by sound, voice, or the like. Moreover, an image, sound, etc. may be combined. The notification by sound, voice, or image may be notified only at the start of power supply or at the end of power supply. Thereby, the improvement of the convenience of a small electric equipment is achieved.

  In each of the above embodiments, the case where the power supply target is authenticated based on the authentication information is exemplified, but the present invention is not limited to this, and any information that can identify a small electric device may be authenticated by other information such as identification information. Good. A plurality of pieces of information may be used for authentication.

  In each of the above embodiments, the case where power is supplied to an authenticated power supply target is illustrated, but power may be supplied without authentication. That is, the authentication circuit may not be provided in the power reception unit or the power transmission unit. Thereby, the application range of this display system can be expanded.

  In each of the above embodiments, the case where the non-contact power feeding system uses electromagnetic induction is illustrated. For example, if power can be supplied in a non-contact manner, the non-contact power supply system can use an electromagnetic induction method, a radio wave method, an electromagnetic resonance method, and other methods. As the non-contact power supply method, an appropriate method may be selected in consideration of the distance between the power transmission unit and the power reception unit, power transmission efficiency, and the like. Thereby, the improvement of the design freedom of the display system for non-contact electric power feeding systems comes to be aimed at.

  In each of the above embodiments, the case where the small electric device is the electric shaver 10 is illustrated. However, the present invention is not limited to this, and the small electric device may be an electric device having a size that the user can hold and use, for example, shaving, epilator, shaving, lady shaver, electric toothbrush, etc. It may be a small electric device which is said to be a so-called barber / beauty appliance. That is, this display system can display a real-time image captured by any small electric device in real time.

  In addition, the above-described small electric equipment such as an electric shaver is highly convenient for a user when applied to a part where it is difficult to ensure visibility even when a mirror is used, for example, the back or the sole of a foot. Can provide sex. Thereby, the improvement of the convenience of a small electric equipment comes to be aimed at.

  In each of the above embodiments, the case where the power transmission device 20 supplies power to the electric razor 10 is illustrated. However, the present invention is not limited to this, and any small electrical device that includes a power receiving device corresponding to the power transmission device and holds authentication information authenticated by the power transmission device can be used in a non-contact manner. May be transmitted. Thereby, the convenience of a small electric device can be improved.

  2 ... Washbasin, 3 ... Bathroom, 10 ... Electric razor (small electric device), 11 ... Power receiving unit, 12 ... Operation unit (load), 13 ... Imaging unit, 15 ... Self-power generation unit, 20 ... Power transmission device, 21 ... Power transmission unit, 22 ... power supply circuit, 23 ... power switch, 24 ... display unit, 26 ... mirror LCD, 27 ... projection surface, 28 ... human sensor, 31 ... first wireless communication unit, 32 ... second wireless communication Unit 113, authentication circuit 131 131 imaging element 211 power transmission coil 261 surface

Claims (10)

A display system for a non-contact power supply system including a display device that displays image information transferred from a small electrical device that is a target for non-contact power supply,
The small electric device includes a power receiving device that receives power transmitted from the power transmitting device of the non-contact power feeding system in a non-contact manner, an authentication information holding unit that holds its own authentication information, and a portion where the small electric device acts A first communication device for transmitting the held authentication information and the captured image information by wireless communication,
The power transmission device of the non-contact power supply system authenticates the second communication device that receives authentication information and image information transmitted by wireless communication from the small electric device, and the authentication information of the small electric device that is received. The apparatus includes an authentication device and the display device, and performs power transmission on the condition that the received authentication information is a small electric device authenticated by the authentication device, and is transmitted in real time from the imaging device of the small electric device. A display system for a non-contact power feeding system, wherein image information is displayed on the display device so as to be visible in real time. The display system for a non-contact power feeding system according to claim 1, wherein the display device displays an image by projecting the image to the outside. The display system for a non-contact power feeding system according to claim 1, wherein the display device includes an image display unit and a mirror surface capable of transmitting an image displayed on the image display unit. The display system for a non-contact power feeding system according to any one of claims 1 to 3, wherein information indicating that power is being transmitted is also displayed on the display device. The non-contact according to any one of claims 1 to 3, wherein the display device displays image information transmitted from the small electrical device in a visible manner in synchronization with power feeding to the small electrical device. Display system for power supply system. The non-contact power supply system according to any one of claims 1 to 5, wherein the small electric device includes a power generation unit that generates power by a specific operation, and uses the power generated by the power generation unit for transmitting the authentication information. Display system. The display for a non-contact power feeding system according to any one of claims 1 to 6, wherein the small electric device includes a power generation unit that generates power at body temperature, and uses the power generated by the power generation unit for transmission of the authentication information. system. The non-contact power feeding system according to any one of claims 1 to 7, wherein the display device is provided on a washstand, and a power transmission coil for power transmission is disposed along a mirror provided on the washstand. Display system. The display for a non-contact power supply system according to any one of claims 1 to 7, wherein the display device is provided in a bathroom, and a power transmission coil for power transmission is disposed along a mirror provided in the bathroom. system. The display system for a non-contact power feeding system according to claim 8 or 9, wherein the power transmission coil is heated to keep the mirror surface warm.

Images