Interlocking system

Abstract

To improve the convenience of a user by providing an auxiliary function for assisting the use of a small electric apparatus using a display part in an interlocking system for communicatively connecting and interlocking the small electric apparatus and a display device.SOLUTION: In an interlocking system for interlocking a small electric apparatus 1 / 2 having a function part 12 / 32 to a human body and a display device 5 having a display part 52, the small electric apparatus 1 / 2 and the display device 5 are respectively provided with communication interfaces 24 / 64 for establishing mutual connection. The display device 5 is provided with an auxiliary function for assisting the use of the small electric appliances 1 and 2 by using a display part 52. The auxiliary function is provided with a major arc-shaped scale indicating the use state of the small electric appliances 1 and 2 and an indicator needle indicating the scale.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an interlocking system that connects and interlocks small electrical appliances, such as electric shavers and beauty tools, that are applied to the human body with display devices capable of displaying images, such as mobile communication terminals, via a communication interface. [Background technology]

[0002] Linking this type of small electrical device and display device through a communication connection is disclosed, for example, in Patent Document 1, previously proposed by the present applicant. In this document, a skin care device serving as a small electrical device is equipped with a receiving unit for communication, and a smartphone serving as a display device is equipped with a transmitting unit for communication. The smartphone is provided with a switch for controlling the electrode unit (operating unit) of the skin care device, and the user can operate the switch on the smartphone while using the skin care device to select the type and strength of the skin care action of the device.

[0003] Furthermore, the mobile phone (display device) disclosed in Patent Document 2 is equipped with a mirroring means that projects the user's face onto the display (display unit), enabling the display to be used like a mirror. The mirroring means is constituted by the combined functions of a microcomputer built into the mobile phone, a dedicated mirroring program downloaded to the mobile phone from a content provider via a communications network, and hardware components such as the camera and half mirror equipped in the mobile phone. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-014516 A (paragraphs 0199 to 0201, FIG. 20) [Patent Document 2] JP 2004-178146 A (paragraph 0012, Figure 4) Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to improve user convenience by providing an auxiliary function that uses a display unit to assist in the use of small electrical devices in an interconnection system that communicatively connects small electrical devices and display devices to link them together. [Means for solving the problem]

[0006] The present invention is an interconnection system that interconnects small electrical appliances 1 / 2 having functional parts 12 / 32 for the human body with a display device 5 having a display part 52, wherein the small electrical appliances 1 / 2 and the display device 5 each have communication interfaces 24 / 64 for establishing a connection with each other, and the display device 5 has an auxiliary function that assists in the use of the small electrical appliances 1 / 2 using the display part 52, and the auxiliary function is characterized by having a major arc-shaped scale that indicates the usage status of the small electrical appliances 1 / 2 and an indicator needle that points to the scale.

[0007] In the present invention, the major arc-shaped scale is composed of a moderate zone indicating that the small electrical appliances 1 and 2 are being used moderately and an excessive zone indicating that the small electrical appliances 1 and 2 are being used excessively.

[0008] The present invention provides an auxiliary function that displays a prompt to make adjustments so that the indicator needle points to the moderate zone.

[0009] In the present invention, the auxiliary function is to display the continuous use time of the small electrical appliances 1-2.

[0010] In the present invention, the auxiliary function displays the remaining battery power of the small electrical device. [Effects of the Invention]

[0011] This is an interlocking system that links small electrical appliances (1 / 2) having functional units (12 / 32) for the human body with a display device (5) having a display unit (52). The small electrical appliances (1 / 2) and the display device (5) are each equipped with communication interfaces (24 / 64) for establishing a connection with each other. The display device (5) is equipped with an auxiliary function that assists in the use of the small electrical appliances (1 / 2) using the display unit (52). The auxiliary function is equipped with a major arc-shaped scale that indicates the usage status of the small electrical appliances (1 / 2) and an indicator needle that points to the scale. The usage status of the small electrical appliances (1 / 2) can be indicated to the user by the scale and indicator needle, thereby improving the convenience of the small electrical appliances (1 / 2).

[0012] If the major arc-shaped scale is composed of a moderate zone indicating that the small electrical appliances 1 and 2 are being used moderately and an excessive zone indicating that the small electrical appliances 1 and 2 are being used excessively, the convenience of the small electrical appliances 1 and 2 can be improved.

[0013] The auxiliary function can improve the convenience of the small electrical appliances 1 and 2 by displaying a display prompting adjustment so that the indicator needle points to the moderate zone.

[0014] The auxiliary function is to display the continuous use time of the small electrical appliances 1 and 2, thereby improving the convenience of the small electrical appliances 1 and 2.

[0015] The auxiliary function is to display the remaining battery power of the small electric appliances, thereby improving the convenience of the small electric appliances 1 and 2. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of an electric shaver and a smartphone that constitute a linked system according to Example 1 (the present invention). [Figure 2] This is a block diagram of the control system of an electric shaver and a smartphone. [Figure 3] 10 is a flowchart showing a control procedure performed by a video stilling unit and a lighting control unit of the auxiliary application. [Figure 4]10 is a flowchart showing a control procedure performed by a protection program for a smartphone. [Figure 5] 10 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 6] 10 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 7] 10 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 8] A diagram showing a smartphone with a user's face and an electric razor displayed on the screen. [Figure 9] FIG. 10 is a diagram illustrating the relationship between the position of the smartphone relative to the user's face and the angle of the front of the smartphone. [Figure 10] FIG. 10 is a diagram showing a state in which an auxiliary illustration is added to the user's face displayed on the display. [Figure 11] 10A and 10B are diagrams illustrating the operation of a reversal instruction unit. [Figure 12] 10A and 10B are diagrams illustrating another operation of the reversal instruction means. [Figure 13] FIG. 10 is a diagram showing still another operation of the reversal instruction means. [Figure 14] FIG. 2 is a diagram showing the layout of each display and each button on the display. [Figure 15] 10A and 10B are diagrams showing alternative arrangements of displays, buttons, etc. on the display. [Figure 16] FIG. 10 is a diagram showing the display switched to displaying instructions. [Figure 17] 10 is a flowchart showing a control procedure performed by an instruction display means. [Figure 18] 10 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 19] FIG. 10 is a schematic diagram of an electric shaver and a smartphone that constitute a linked system according to a second embodiment. [Figure 20] FIG. 10 is a schematic diagram of a beauty tool and a smartphone that constitute a linkage system according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Example 1 Example 1 (the present invention) applied to a system for linking an electric shaver and a smartphone will be described with reference to Figures 1 to 18. In this example, up, down, left, and right refer to the crossed arrows shown in Figure 1 and the up, down, left, and right indications written near each arrow.

[0018] 1 and 2, electric shaver (small electrical appliance) 1 comprises a vertically long main body case 10 that also serves as a grip, and a razor head 11 supported on the top of main body case 10. An outer blade (cutting blade) 13 and an inner blade (cutting blade) 14 that constitute a functional part 12 for shaving facial skin (human body) are arranged on the top of razor head 11. A switch button 15 that can be pressed inward is provided on the surface of main body case 10, and inside main body case 10 are housed a motor 16 that serves as a drive source for inner blade 14, a vertically long control board 17, and a secondary battery (cell) 18 that serves as the overall power source for electric shaver 1. Mounted on the control board 17 are a drive switch (operation switch) 21 for turning on the power operated by the switch button 15, an acceleration sensor 22 and a gyro sensor 23 for detecting the attitude of the electric shaver 1, a communication interface 24 that operates in accordance with the Bluetooth communication standard, and a control unit 25 that controls the entire electric shaver 1. The drive switch (operation switch) 21 is not limited to a push-button type, and may be a slide type.

[0019] The smartphone (display device) 5 has a thin housing 50 whose vertical dimension is greater than its horizontal dimension. A touch-panel display (display unit) 52 occupies most of the front surface 51 of the housing 50. A camera 53 and a speaker 54 are located in the center of the upper left and right sides of the front surface 51, and an LED (lighting device) 56 is located to the right of the camera 53 and a speaker 54. The housing 50 contains a vertically elongated control board 57, a vibrator 59, and a battery pack (not shown) that serves as the overall power source for the smartphone 5. The control board 57 is equipped with a wireless interface for communicating with a base station, a memory 61 for storing various programs and data, an acceleration sensor 62 and a gyro sensor 63 for detecting the orientation of the smartphone 5, a communication interface 64 that operates in accordance with the Bluetooth standard, and a control unit 65 that controls the entire smartphone 5, including these components.

[0020] The memory 61 of the smartphone 5 stores a camera program for displaying video captured by the camera 53 on the display 52. ​​The camera program includes a zoom function for enlarging or reducing the video captured by the camera 53, and a face recognition function for detecting a facial area from the video captured by the camera 53. The zooming method used by the zoom function may be either optical zoom or digital zoom, or both.

[0021] The memory 61 also stores an auxiliary app, which is an application program that assists the user in using the electric shaver 1. The auxiliary app is provided by the manufacturer of the electric shaver 1 and can be downloaded to the smartphone 5 via the Internet from a server operated by the manufacturer. The auxiliary app includes a mirroring means that enables the display 52 to be used as a mirror, a video stilling means that stills the video displayed on the display 52, and an illumination control means that controls the lighting state of the LED 56. The auxiliary app also includes a zoom control means that controls the zoom function of the camera 53, an illustration adding means that adds an auxiliary illustration 70 (see FIG. 10 ) to the face area displayed on the display 52, and an inversion instruction means that instructs the user to invert the smartphone 5. The auxiliary app also includes an appliance status reporting means that displays the appliance status of the electric shaver 1 on the display 52, an electric appliance control means that sends a control signal for controlling the electric shaver 1 to the control unit 25, and an instruction display means that displays the instruction manual for the electric shaver 1 on the display 52. This auxiliary application is a resident application program, and remains in a standby state in the background until it starts operating in conjunction with the turning on of the drive switch 21 of the electric shaver 1.

[0022] (mirroring method) The mirroring means activates the camera program stored in memory 61, starts capturing images with camera 53, and displays the video captured by camera 53 on display 52. ​​While the camera program is running, the face of the user facing front 51 of smartphone 5 is captured by camera 53 and displayed on display 52, allowing the user to use display 52 as if it were a mirror. The mirroring means is the core of the auxiliary app, and starts operating at the same time as the auxiliary app is launched.

[0023] (Video still means) The video stilling means freezes the video displayed on the display 52 in accordance with the user's operation while the mirroring means is operating. Specifically, when the user turns off the drive switch 21 while the electric shaver 1 is running, the video stilling means freezes the video displayed on the display 52, and when the user turns on the drive switch 21 again, the video stilling means cancels the still state of the video. Note that the operation of the drive switch 21 is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5 via the communication interfaces 24 and 64. With the part of the face that the user wants to check captured on the camera 53, the user can freeze the video by turning off the drive switch 21, and then move the still display 52 to a position where it is easy to see, such as in front of the face, to easily check the part of the face.

[0024] (Lighting control means) The illumination control means controls the lighting of the LED 56 of the smartphone 5 when the connection between the electric shaver 1 and the smartphone 5 is established. The LED 56 has multiple lighting patterns. In this embodiment, the LED 56 is lit in a first lighting pattern when the electric shaver 1 is operating (when a video is displayed on the display 52), and is lit in a second lighting pattern when the electric shaver 1 is stopped (when the video is stationary on the display 52). In this embodiment, the first lighting pattern is a constant lighting state, and the second lighting pattern is a flashing state of the same color. However, for example, both lighting patterns may be constant lighting states with different color tones (emission colors). In this embodiment, the camera 53 and the LED 56 are located on the same side (front surface 51) of the smartphone 5. Therefore, when the electric shaver 1 and the smartphone 5 are used in a dimly lit place, the LED 56 can illuminate the subject of the camera 53, i.e., the user's face. Therefore, regardless of the brightness of the place where the electric shaver 1 and smartphone 5 are used, the user's face can always be clearly displayed on the display 52, improving user convenience. Note that the lighting device 56 is not limited to one built into the smartphone 5 as in this embodiment, but the concept also includes one that is externally attached to the smartphone 5 and controlled by an auxiliary app.

[0025] As shown in the flowchart in Figure 3, when the user turns on the drive switch 21 to power on the electric shaver 1 (YES in step S1), the motor 16 starts and the functional unit 12 begins to operate. At the same time, the communication interface 24 of the electric shaver 1 is enabled (step S2), and a wireless connection with the communication interface 64 of the smartphone 5 is established. Note that the smartphone 5 is already running when the electric shaver 1 is powered on, and its communication interface 64 is also enabled. In addition, an auxiliary app that assists in using the electric shaver 1 is in a standby state in the background.

[0026] Upon receiving the establishment of connection with the electric shaver 1, the auxiliary app checks the status of the control unit 65 of the smartphone 5 and displays a push notification on the display 52. ​​The display of this push notification corresponds to the launch of the auxiliary app (step S3). By tapping this push notification, the user can move the auxiliary app to the foreground and display the screen of the auxiliary app over the entire display 52. ​​When the auxiliary app is launched in the foreground, the mirroring means starts operating, and the video captured by the camera 53 is displayed on the display 52 (step S4). In addition, the lighting control means lights up the LED 56 in a first lighting pattern (step S5).

[0027] When the mirroring means starts operating, the video still means enters a standby state and waits for the drive switch 21 of the electric shaver 1 to be turned off (step S6). When the drive switch 21 is turned off and the motor 16 stops (YES in step S6), the video still means freezes the video displayed on the display 52 (step S7), and the illumination control means switches the LEDs 56 to the second lighting pattern (step S8). When the drive switch 21 is turned on and the motor 16 starts again (YES in step S9), the video still means releases the still state of the video (step S10), and the illumination control means switches the LEDs 56 to the first lighting pattern (step S5), and again waits for the drive switch 21 to be turned off in step S6.

[0028] The control unit 25 of the electric shaver 1 keeps the communication interface 24 enabled immediately after the drive switch 21 is turned off, and disables the communication interface 24 when a predetermined time (10 minutes in this embodiment) has elapsed since the drive switch 21 was turned off. However, the control unit 25 has a timer function that stops the motor 16 when the continuous driving time of the motor 16 exceeds a predetermined time (5 minutes in this embodiment), and when the motor 16 is stopped by this timer function, the communication interface 24 is disabled when a time (5 minutes in this embodiment) shorter than the predetermined time has elapsed since the motor 16 was stopped.

[0029] The smartphone 5 stores a protection program that turns off the display 52 when it is determined that the user has left the smartphone 5 unattended for a long period of time. If the video stilling means operates for a long period of time while the auxiliary app is running, that is, if the video displayed on the display 52 remains still for a long period of time, it is possible that the user has left the smartphone 5 unattended without turning off the display 52 after finishing shaving and turning off the electric shaver 1.

[0030] On the other hand, when the video still capturing means is not operating and a video is displayed on the display 52, i.e., when the display 52 is in the mirrored state, it is highly likely that the user is shaving with the electric shaver 1 while using the smartphone 5 as a hand mirror. However, even in the mirrored state, if the user's face or the electric shaver 1 is not captured by the camera 53 for a long period of time, it is possible that the user has left the smartphone 5 together with the electric shaver 1 in the operating state. In these cases, the protection program turns off the display 52 to avoid unnecessary consumption of the battery pack.

[0031] The specific control procedure by the protection program is shown in the flowchart of Fig. 4. The protection program starts timing using a timer (step S11) when the auxiliary application is launched in the foreground (at this point, the mirroring means is operating, but the video still means is not operating). From this point on, the protection program waits for a predetermined time (five minutes in this embodiment) to elapse after starting timing, for the video still means to operate and freeze display 52, or for the user's face or electric shaver 1 to be detected by camera 53 (steps S12 to S14).

[0032] If the user's face or the electric shaver 1 is detected from the video displayed on the display 52 before the predetermined time has elapsed (NO in steps S12 to S13, YES in step S14), it is assumed that the user is using the smartphone 5, so the process returns to step S11 to reset the timer and start timing again. On the other hand, if the predetermined time has elapsed without the user's face or the electric shaver 1 being detected and without the display 52 remaining still (NO in steps S13 to S14, YES in step S12), it is assumed that the user has left the smartphone 5 together with the electric shaver 1 in an activated state, so the protection program proceeds to step S15 and turns off the display 52.

[0033] If the video stilling means operates and the display 52 freezes (YES in step S13), the program proceeds to step S16, resets the timer, and restarts timing. If a predetermined time (five minutes in this embodiment) has passed since timing started before the freeze state is released (NO in step S18, YES in step S17), it is assumed that the user left the smartphone 5 without turning off the display 52 after finishing shaving and stopping the electric shaver 1, and the protection program proceeds to step S15, turning off the display 52. ​​On the other hand, if the freeze state is released before the predetermined time has passed (NO in step S17, YES in step S18), the program returns to step S11, resets the timer, and restarts timing. In addition to the above, the protection program can turn off the display 52 if the motor 16 is stopped by the timer function of the electric shaver 1.

[0034] The timing chart in FIG. 5 shows an example of a situation in which the drive switch 21 of the electric shaver 1 and the auxiliary app of the smartphone 5 cooperate with each other. When the drive switch 21 is turned on at time t1, the motor 16 of the electric shaver 1 starts and the communication interface 24 is enabled. At the same time, the auxiliary app running in the background of the smartphone 5 displays a push notification on the display 52. ​​Then, after a tap by the user, the auxiliary app starts in the foreground and the display 52 is mirrored by the mirroring means. The LED 56 also lights up in a first lighting pattern. At the next time t2 (t2-t1<5 minutes), the drive switch 21 is turned off, stopping the motor 16 of the electric shaver 1. At the same time, the video displayed on the display 52 of the smartphone 5 freezes and the LED 56 switches to a second lighting pattern.

[0035] At the next time point t3 (t3-t2<5 minutes), the drive switch 21 is turned on, restarting the motor 16 of the electric shaver 1. At the same time, the video stilling means on the smartphone 5 releases the video from its frozen state, the display 52 is mirrored again, and the LED 56 switches to the first lighting pattern. At the next time point t4 (t4-t3<5 minutes), the drive switch 21 is turned off, stopping the motor 16 as at the previous time point t2, stopping the video on the display 52, and switching the LED 56 to the second lighting pattern. At the next time point t5 (t5-t4=5 minutes), the protection program described above turns off the display 52. ​​At the next time point t6 (t6-t4=10 minutes), the communication interface 24 of the electric shaver 1 is disabled. Furthermore, in response to the disconnection of the smartphone 5 from the electric shaver 1, the auxiliary app automatically transitions to a standby state in the background, and the LED 56 turns off. The LED 56 may be turned off at time t5 when the display 52 is turned off.

[0036] The timing chart in FIG. 6 shows a case where the electric shaver 1 is left in an operating state together with the smartphone 5 running the auxiliary app. Time t12 when the electric shaver 1 and smartphone 5 are left alone occurs a few minutes (2 to 3 minutes) after time t11 when the drive switch 21 is turned on. In the electric shaver 1, the motor 16 automatically stops at time t13, five minutes after the drive switch 21 is turned on (time t11). At time t15, five minutes after time t13, the communication interface 24 is disabled. In the smartphone 5, since the camera 53 is no longer able to detect the user's face or the electric shaver 1 after time t12 when the user leaves the smartphone 5, the display 52 is turned off by the protection program described above at time t14, five minutes after time t12. Furthermore, at time t15 when the connection with the electric shaver 1 is lost, the auxiliary app automatically transitions to a standby state in the background, and the LED 56 is turned off. Note that if the camera 53 detects the user's face or the electric shaver 1 before time t14, i.e., before five minutes have elapsed since time t12, the timer for turning off the display 52 is reset. The timing for turning off the display 52 by the protection program of the smartphone 5 may also be time t13 when the motor 16 of the electric shaver 1 automatically stops. The timing for disabling the communication interface 24, the timing for the auxiliary app to enter a standby state in the background, and the timing for turning off the LED 56 may also be time t13.

[0037] The timing chart in Fig. 7 shows another control method using the auxiliary app and protection program of the smartphone 5. The period from time t21 when the drive switch 21 is turned on to time t22 when the camera 53 can no longer detect the user's face or the electric shaver 1 is the same as times t11 to t12 in Fig. 6, but here, at time t23, one minute after time t22, the protection program turns off the display 52, and the electrical appliance control means of the auxiliary app (described in detail below) sends a control signal to the control unit 25 of the electric shaver 1 to decelerate the motor 16. Then, at time t24, one minute after time t23, the motor 16 of the electric shaver 1 stops, the communication interface 24 is disabled, the auxiliary app of the smartphone 5 transitions to a standby state in the background, and the LED 56 turns off. Note that if the camera 53 detects the user's face or the electric shaver 1 before time t23, i.e., before one minute has elapsed since time t22, the timer for turning off the display 52 is reset. Also, instead of slowing down the motor 16 at time t23, the motor 16 may be stopped, in which case the communication interface 24 may be disabled, the auxiliary app may be put into a standby state, and the LED 56 may be turned off at time t23.

[0038] The operation for controlling the video still means is not limited to the switch operation of the electric shaver 1 described above, but may be, for example, a tap operation by the user on the display 52 of the smartphone 5, or a specific movement operation such as the user shaking the electric shaver 1 or the smartphone 5. These movement operations are detected by the acceleration sensors 22 and 62 and the gyro sensors 23 and 63 built into the electric shaver 1 and the smartphone 5, respectively. The details of the movement operation of the electric shaver 1 are transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24 and 64.

[0039] (Zoom control means) The zoom control means controls the zoom function of the camera 53 in conjunction with the user's movement of the electric shaver 1 and smartphone 5. The movement of the electric shaver 1 is detected by the acceleration sensor 22 and gyro sensor 23 built into the electric shaver 1, and the detected movement is transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24·64. The zoom control means controls the zoom function of the camera 53 based on the movement of the electric shaver 1. For example, when the electric shaver 1 is moving with relatively large strokes or when the electric shaver 1 is moving relatively quickly, it is assumed that the user is shaving a wide area of ​​their face, so the zoom control means zooms out the camera 53 to display a wide area of ​​their face on the display 52. ​​Conversely, when the electric shaver 1 is moving with relatively small strokes or when the electric shaver 1 is moving relatively slowly, it is assumed that the user is focusing on shaving a specific area of ​​their face, so the zoom control means zooms in the camera 53 to display an enlarged image of that area of ​​their face on the display 52.

[0040] Additionally, the video captured by the camera 53 can be analyzed to detect the movement of the electric razor 1 by the user. To facilitate this detection, the exterior surface of the electric razor 1 is provided with a plurality of markings 28 that are identifiable in the video (see FIG. 8). The markings 28 are mainly dispersedly placed around the functional unit 12 so that some of the markings 28 are always visible to the camera 53, regardless of the grip position of the electric razor 1 by the user. By observing the movement of each marking 28 in the video, the movement stroke and speed of the electric razor 1 can be detected, and the zoom function can be controlled in the same way as above based on the magnitude of these marks.

[0041] Furthermore, as shown in Figure 8, by also using the face recognition function of the camera program, the positional relationship between the facial area in the video and each of the markers 28 of the electric shaver 1 can be compared to detect the part of the face that the functional unit 12 of the electric shaver 1 directly faces. The zoom function of the camera 53 may be controlled according to the part of the face detected in this way. In Figure 8, the functional unit 12 faces directly below the user's nose, which is detected from the positions of the two markers 28 around the functional unit 12 in the facial area. When the functional unit 12 is located below the nose, the zoom control means, for example, zooms in the camera 53 to display an enlarged image of the area below the nose on the display 52. ​​This is because, normally, people rarely shave the area below the nose and other areas at the same time, and when shaving the area below the nose, they often focus on that.

[0042] On the other hand, a movement operation of the smartphone 5 is detected by an acceleration sensor 62 and a gyro sensor 63 built into the smartphone 5, and the zoom function is controlled based on the content of the movement operation. Specifically, for example, as shown in FIG. 9( a), when the front 51 of the smartphone 5 is at an angle close to vertical, it is assumed that the user is moving the smartphone 5 in front of their face to display their entire face on the display 52, and therefore the zoom control means zooms out the camera 53. Conversely, as shown in FIG. 9( b), when the front 51 of the smartphone 5 is at an angle of approximately 45° with respect to the horizontal plane, it is assumed that the user is moving the smartphone 5 diagonally below their face to display only a part of their face, such as their chin, on the display 52, and therefore the zoom control means zooms in the camera 53. Furthermore, when the sensors 62 and 63 detect that the user has performed a specific movement operation, such as shaking the smartphone 5, the zoom magnification of the camera 53 may be changed.

[0043] The camera program's face recognition function can also be used to detect movement of the smartphone 5. That is, if the facial area in the video captured by the camera 53 becomes larger, it can be determined that the user has brought the smartphone 5 closer to their face. In this case, the zoom control means, for example, zooms in the camera 53 to magnify and display a portion of the face on the display 52. ​​Conversely, if the facial area in the video becomes smaller, it can be determined that the user has moved the smartphone 5 away from their face. In this case, the zoom control means, for example, zooms out the camera 53 to display a wider range of the face on the display 52. ​​Furthermore, the zoom function of the camera 53 may be controlled according to the facial expression of the facial area in the video. For example, if the facial area is recognized as a smiling face, the zoom control means zooms in the camera 53, and if the facial area is recognized as an angry face, the zoom control means zooms out the camera 53.

[0044] The zoom control means may start operating simultaneously with the launch of the auxiliary app, or may start operating at the user's request after the launch of the auxiliary app. The operation for controlling the zoom control means is not limited to the aforementioned movement of the electric shaver 1 and smartphone 5. For example, the zoom function of the camera 53 can be controlled in conjunction with the operation of a switch on the electric shaver 1. One example of a switch is a control switch for the rotation speed of the motor 16 provided on the electric shaver 1. For example, when the rotation speed is reduced, it is assumed that the user is carefully shaving a portion of their face, and the zoom control means causes the camera 53 to zoom in. The zoom function of the camera 53 can also be controlled by the user directly operating the display 52 or a button on the side of the smartphone 5.

[0045] (Method of adding illustrations) As shown in FIG. 10 , the illustration adding means adds an auxiliary illustration 70 to the facial area displayed on the display 52 of the smartphone 5. The auxiliary illustration 70 according to this embodiment is composed of an unprocessed illustration 71 representing an exaggerated beard and a processed illustration 72 representing that the beard has been shaved. When the illustration adding means starts operation, it adds the unprocessed illustration 71 to the area below the nose, chin, both cheeks, and sideburns of the facial area detected by the face recognition function, and when it determines that the user has finished shaving each area, it changes the unprocessed illustration 71 for that area to the processed illustration 72. When all of the unprocessed illustrations 71 on the display 52 have been changed to the processed illustrations 72, the user can confirm that all of their beard has been shaved (there is no unshaven area).

[0046] Completion of shaving each part of the face is detected using the marks 28 on the exterior of the electric shaver 1. As explained above in the section on the zoom control means, the part of the face that the functional unit 12 of the electric shaver 1 directly faces can be detected by comparing the positional relationship between the facial area in the video and each of the marks 28 on the electric shaver 1. When the functional unit 12 directly faces a part of the face, i.e., passes over it a predetermined number of times, the illustration adding means determines that shaving of that part of the face is complete and changes the unprocessed illustration 71 to the processed illustration 72.

[0047] The illustration adding means may start operation simultaneously with the launch of the auxiliary app, or may start operation after the launch of the auxiliary app according to the user's request. The auxiliary illustration 70 may also be composed of only one of the unprocessed illustration 71 and the processed illustration 72. For example, if the auxiliary illustration 70 is composed of only the unprocessed illustration 71, the illustration adding means erases the unprocessed illustration 71 in order, starting with the portion determined to have been shaved. The user can confirm that all of the beard has been shaved when all of the unprocessed illustrations 71 have disappeared from the display 52. ​​The auxiliary illustration 70 may also include an in-processing illustration indicating that processing is in progress. For example, the auxiliary illustration 70 may include multiple in-processing illustrations in which the beard is gradually thinner than the unprocessed illustration 71, and each time the functional unit 12 of the electric shaver 1 passes over a portion of the face, the auxiliary illustration 70 for that portion may be changed to an in-processing illustration with a thinner beard.

[0048] (Reverse indication means) The inversion instruction means instructs a user who uses the auxiliary app with the smartphone 5 in the normal orientation to invert the smartphone 5 upside down. The normal orientation is an orientation in which the camera 53 and the LED 56 are located at the top of the smartphone 5, as shown in FIG. 1 . When the smartphone 5 is in an inverted orientation in which the smartphone 5 is turned upside down, the camera 53 is located at the bottom of the smartphone 5, making it easier to photograph the lower part of the face where beard grows, particularly the area under the chin. Note that whether the smartphone 5 is in the normal orientation or the inverted orientation is detected by the built-in gyro sensor 63.

[0049] For example, as shown in Fig. 11(a), when the smartphone 5 is in the normal position, upside-down inverted characters can be displayed on the display 52, and this can serve as the inversion instruction means. When the user sees the inverted characters and intuitively turns the smartphone 5 upside-down, normal characters in the correct orientation are displayed on the display 52, as shown in Fig. 11(b). Note that the normal characters in Fig. 11(b) may be an obstacle when projecting the user's face on the display 52, so they may be made to disappear over time or may be omitted.

[0050] 12(a), when the smartphone 5 is in the normal position, text such as "Please turn over" that directly instructs the user to turn over the smartphone 5 upside down can be displayed on the display 52, and this can serve as the inversion instruction means. When the user turns the smartphone 5 upside down in accordance with this text, text indicating that the smartphone 5 is in the correct position is displayed on the display 52, as shown in FIG. 12(b). However, this text may disappear over time or may be omitted for the same reason as the normal text in FIG. 11(b). Note that instead of the text in FIG. 12(a), a symbol such as a U-shaped arrow may be displayed and used as the inversion instruction means.

[0051] 13(a), when the smartphone 5 is in the normal position, the entire video displayed on the display 52 can be flipped upside down, which can serve as an inversion instruction means. When a user sees their own face flipped upside down, the video is displayed in the correct orientation on the display 52, as shown in FIG. 13(b). Here, as in FIG. 12(b), a character may be displayed indicating that the smartphone 5 is in the correct position.

[0052] (Device status notification means) As shown in Fig. 14, the device status notification means displays the device status, such as the remaining battery power of the electric shaver 1, on the display 52. ​​This display comprises a battery level indicator 75 that shows the remaining power of the secondary battery 18 of the electric shaver 1, a replacement indicator 76 that indicates when it is time to replace the outer blade 13 and inner blade 14, a cleaning indicator 77 that indicates when it is time to clean the functional unit 12 including the hair scraps collection chamber, a load indicator 78 that shows the magnitude of the load acting on the functional unit 12, and a time indicator 79 that shows the continuous usage time of the electric shaver 1. The device status notification means starts operating simultaneously with the launch of the auxiliary app, but can also be stopped by a subsequent user operation.

[0053] The battery level indicator 75 consists of a numerical value indicating the remaining charge of the secondary battery 18 and a five-level scale, and changes color from green to yellow to red as the remaining battery charge decreases. Information about the remaining charge of the secondary battery 18 is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5 via the communication interfaces 24·64. When the remaining battery charge falls below a predetermined percentage (e.g., 20%), the device status notification means changes the color of the battery level indicator 75 to red, activates the vibrator 59 of the smartphone 5, and lights up the LED 56 in an emergency pattern to notify the user that the remaining battery charge is low.

[0054] The replacement indicator 76 does not light up when the blades 13 and 14 do not need to be replaced, but lights up when the time for replacement approaches. The control unit 25 of the electric shaver 1 manages the cumulative usage time since the last replacement for each of the outer blade 13 and inner blade 14, and when this cumulative usage time reaches a predetermined time, it transmits a message to the smartphone 5 that the time for replacement of the blades 13 and 14 is approaching. The device status notification means receiving this message lights up the replacement indicator 76 for the blades 13 and 14 that are due for replacement on the display 52, drives the vibrator 59, and also lights up the LED 56 in an emergency pattern, urging the user to replace the blades 13 and 14. After replacing the blades 13 / 14, if the user presses and holds the replacement indicator 76 on the display 52, for example, the device status notifying means determines that the replacement of the blades 13 / 14 is complete, turns off the replacement indicator 76, and notifies the control unit 25 of the electric shaver 1 that the replacement of the blades 13 / 14 has been completed. In response to this, the control unit 25 resets the cumulative usage time for the replaced blades 13 / 14. It should be noted that the approaching time to replace the blades 13 / 14 may also be determined based on the number of times the drive switch 21 has been turned on and off, in addition to the cumulative usage time.

[0055] The cleaning indicator 77 also does not light up when cleaning of the functional unit 12 is not necessary, but lights up when the time for cleaning approaches. The hair chip collection chamber constituting the functional unit 12 is provided with an optical sensor for detecting the amount of accumulated hair chips. When the amount of accumulated hair chips exceeds a predetermined reference value, the control unit 25 transmits a notification to the smartphone 5 that the time for cleaning is approaching. In response to this, the appliance status notification means illuminates the cleaning indicator 77 on the display 52, activates the vibrator 59, and illuminates the LED 56 in an emergency pattern to prompt the user to clean the functional unit 12. When the user performs cleaning and the amount of accumulated hair chips falls below a predetermined value, the control unit 25 transmits a notification to the smartphone 5 that cleaning is complete, and in response to this, the appliance status notification means turns off the cleaning indicator 77. It should be noted that the approaching time for cleaning the functional unit 12 may be determined based on the amount of accumulated hair chips, the cumulative usage time since the previous cleaning, or the number of times the drive switch 21 has been turned on and off, in addition to the amount of accumulated hair chips.

[0056] The load indicator 78 indicates the magnitude of the load acting on the functional unit 12 of the electric shaver 1, thereby urging the user to adjust the strength of the force with which the functional unit 12 is pressed against the facial skin. There is a correlation between the pressing force of the functional unit 12 and the magnitude of the load, and the stronger the pressing force, the greater the load. Therefore, by displaying the magnitude of the load on the functional unit 12 on the display 52, the user can be informed of the strength of the pressing force at that time. By checking the load indicator 78 while shaving, the user can always maintain an appropriate pressing force on the functional unit 12, thereby reducing the strain on the facial skin.

[0057] The load current flowing through the motor 16 is used as an indicator of the magnitude of the load on the functional unit 12. The greater the load on the functional unit 12, the greater the value of the load current. The control unit 25 of the electric shaver 1 monitors the magnitude of this load current and transmits it to the smartphone 5. The load display 78 includes a major arc-shaped scale indicating the magnitude of the load and an indicator needle pointing to a point on the scale. From the bottom left to the bottom right of the scale, the following zones are set in order: a low load zone (green) indicating a light load (weak pressing force), a medium load zone (blue) indicating a moderate load (pressing force), a high load zone (green) indicating a heavy load (strong pressing force), and an overload zone (red) indicating an excessive load (pressing force). It is preferable for the user to adjust the pressing force of the functional unit 12 so that the indicator needle always points to the medium load zone. When the indicator needle of the load display 78 points to the overload zone, the device state notification means drives the vibrator 59 and also lights up the LED 56 in an emergency pattern to alert the user.

[0058] When the user taps the load indicator 78 on the display 52, the load indicator 78 switches to the second load indicator 80 shown in FIG. 15. The second load indicator 80 consists of two concentrically arranged major arc-shaped scales and an arrow pointing to each scale. The outer scale indicates the rotation speed of the motor 16, and the inner scale indicates the magnitude of the load torque. This information is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5. If the rotation speed of the motor 16 falls below a predetermined lower limit or if the load torque exceeds a predetermined upper limit, the device status notification means determines that the load on the functional unit 12 is excessive and activates the vibrator 59 and further illuminates the LED 56 in an emergency pattern to alert the user. When the user taps the second load indicator 80 on the display 52, the second load indicator 80 returns to the load indicator 78 shown in FIG. 14.

[0059] The time display 79 displays the continuous usage time of the electric shaver 1 per use, i.e., the continuous operation time of the motor 16, in seconds. When the user turns off the drive switch 21 and stops the motor 16, the continuous usage time displayed on the time display 79 is reset. The continuous usage time is also reset when a predetermined time (5 minutes) has elapsed since the drive switch 21 was turned on and the motor 16 is stopped by the timer function. The device status notification means changes the color of the time display 79 to red, for example, and activates the vibrator 59 and lights the LED 56 in an emergency pattern to alert the user, for example, one minute before the motor 16 is to be stopped by the timer function. This continuous usage time may be measured on the electric shaver 1 side and transmitted to the smartphone 5, or it may be measured on the smartphone 5 side. As described above, the on / off operation of the drive switch 21 is transmitted to the smartphone 5, so the continuous usage time can also be measured on the smartphone 5 side.

[0060] (Electrical equipment control means) The electric appliance control means transmits control signals for controlling the electric shaver 1 to the control unit 25 via the communication interfaces 24 / 64. At the left end of the display 52, there are arranged, as user operable elements, a rotation speed lever 81 for changing the rotation speed of the motor 16 of the electric shaver 1, a drive button 82 for turning the motor 16 on and off, and a lock button 83 for locking the motor 16 in a driven state regardless of the timer function.

[0061] When the user slides the rotation speed lever 81 up or down, the electrical appliance control means transmits a control signal to increase or decrease the speed of the motor 16 to the control unit 25 of the electric shaver 1 via the communication interfaces 24·64. When the user taps the drive button 82 while the motor 16 is stopped, the electrical appliance control means transmits a control signal to the control unit 25 to start the motor 16. When the user taps the drive button 82 while the motor 16 is in a driving state, the electrical appliance control means transmits a control signal to the control unit 25 to stop the motor 16. When the user taps the lock button 83 while the motor 16 is in a driving state, the electrical appliance control means transmits a control signal to the control unit 25 to lock the motor 16 if it is not locked in the driving state, and transmits a control signal to the control unit 25 to unlock the motor 16 if it is locked in the driving state. When the motor 16 is locked in the driving state, the motor 16 will not stop against the user's will, even if the user inadvertently touches the switch button 15.

[0062] In addition to the above, the electrical appliance control means can control the electric shaver 1 in accordance with the user's displacement of the smartphone 5. For example, when the user tilts the smartphone 5 to the left or right, the electrical appliance control means transmits a control signal to the control unit 25 to increase the speed of the motor 16, and when the user tilts the smartphone 5 to the other left or right, the electrical appliance control means transmits a control signal to the control unit 25 to decrease the speed of the motor 16. The user's movement of the smartphone 5 can be detected by the acceleration sensor 62 and gyro sensor 63 built into the smartphone 5.

[0063] Furthermore, the electrical appliance control means can control the rotation speed of the motor 16 depending on the part of the face that the functional unit 12 faces, for example, by slowing down the motor 16 when the functional unit 12 of the electric shaver 1 faces directly below the nose of the user. As explained above in the section on the zoom control means, the part of the face that the functional unit 12 faces directly can be detected by comparing the positional relationship between the facial area in the video and each of the marks 28 on the electric shaver 1. Furthermore, as explained in the timing chart of FIG. 7, when it is determined that the user has left the electric shaver 1 or smartphone 5 unattended, the electrical appliance control means can send a control signal to the control unit 25 to slow down or stop the motor 16 even if the user has not operated the smartphone 5.

[0064] (Instruction display means) The instruction manual display means displays the instruction manual for the electric shaver 1 on the display 52 of the smartphone 5. When the user taps an instruction manual button 85 (see FIG. 14) on the display 52, the instruction manual display means switches the display 52 from the mirror display to the instruction manual display shown in FIG. 16. A mirror button 86 is located in a corner of the display 52 in the instruction manual display, and when the user taps the mirror button 86, the instruction manual display means switches the display 52 from the instruction manual display to the mirror display.

[0065] The instruction manual in this embodiment is composed of multiple pages, such as "Table of Contents," "Names and Functions of Each Part," "How to Use," "Replacing the Blade," and "Cleaning the Blade." The table of contents is displayed immediately after the display 52 switches to the instruction manual display. The user can tap a link to a page in the table of contents or slide the display 52 left or right to display the desired page on the display 52. ​​The user can also pinch in to zoom out or pinch out to zoom in. Note that instead of or in addition to the instruction manual button 85 in this embodiment, multiple buttons, such as "How to Use," "Cleaning the Blade," and "Cleaning the Blade," may be placed on the display 52, and the corresponding page of the instruction manual may be displayed when the user taps each of these buttons. The instruction manual data may be included in the auxiliary app in advance, or may be downloaded via the Internet from the server of the electric shaver 1 manufacturer when the instruction manual button 85 is tapped.

[0066] In the flowchart of Fig. 17, immediately after the auxiliary app is launched on the smartphone 5, the display 52 is in mirror display. When the instruction button 85 on the display 52 is tapped (YES in step S21), the instruction display means switches the display 52 from mirror display to instruction display (step S22). At the same time, in accordance with a control signal transmitted from the electric appliance control means to the electric shaver 1, the control unit 25 stops the motor 16 (step S23). Thereafter, the process waits until the drive switch 21 of the electric shaver 1 is turned on or the mirror button 86 on the display 52 is tapped (steps S24 to S25).

[0067] When the drive switch 21 of the electric shaver 1 is turned on (YES in step S24), the process proceeds to step S26, where the control unit 25 activates the motor 16. The fact that the drive switch 21 has been turned on is transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24·64, and the instruction display means, upon receiving this, switches the display 52 from the instruction display to the mirror display. When the mirror button 86 on the display 52 is tapped (YES in step S25), the process also proceeds to step S26, where the instruction display means switches the display 52 to the mirror display. At the same time, the control unit 25 activates the motor 16 in accordance with the control signal transmitted from the electric appliance control means to the electric shaver 1.

[0068] The timing chart of Fig. 18 shows an example of a case where the display 52 and the motor 16 are controlled in accordance with the flowchart of Fig. 17. At time t31, the instruction manual button 85 is tapped, the display 52 switches from mirror display to instruction manual display, and the motor 16 of the electric shaver 1 is stopped. At the next time t32, the mirror button 86 is tapped, the display 52 switches to mirror display, and the motor 16 is started. At the next time t33, the instruction manual button 85 is tapped in the same manner as at time t31, the display 52 switches to instruction manual display, and the motor 16 is stopped. At the next time t34, the drive switch 21 of the electric shaver 1 is turned on, the display 52 switches to mirror display, and the motor 16 is started.

[0069] (Example 2) Figure 19 shows Example 2 of the interlocking system. The razor head 11 of the electric shaver 1 according to Example 2 has a pair of front and rear functional sections 12, with a skin elasticity sensor (skin elasticity measuring means) 40 provided between the two functional sections 12. The functional section 12 comprises an outer blade (cutting blade) 13 and an inner blade (cutting blade) 14. Various conventionally known sensors can be used as the skin elasticity sensor 40, such as the vibrator sensor disclosed in Japanese Patent Application Laid-Open No. 2009-153727 and the pressure-sensitive sensor disclosed in Japanese Patent Application Laid-Open No. 61-181437. The skin elasticity sensor 40 according to this example is composed of a contactor 41 that contacts the skin surface simultaneously with the outer blade 13, and a spring 42 that biases the contactor 41 toward the skin surface. Skin elasticity sensor (skin elasticity measuring means) 40 may be provided on the left and right sides of functional part 12 in the case body that constitutes razor head 11, as long as it can come into contact with the skin surface simultaneously with functional part 12.

[0070] A skin elasticity indicator 43 is provided on the side of the main body case 10, which displays the level of skin elasticity in three levels: "small," "medium," and "large." The skin elasticity indicator 43 is composed of three LEDs mounted on the control board 17, and these LEDs correspond to "small," "medium," and "large," respectively. The main body case 10 is provided with translucent windows directly facing each LED, allowing the user to visually check the light emission state of each LED through the translucent windows. The control unit 25 of the electric shaver 1 controls the lighting of one of the LEDs in the skin elasticity indicator 43 depending on the level of skin elasticity measured by the skin elasticity sensor 40.

[0071] The skin elasticity indicator 43 can also be provided on the razor head 11. In this case, the skin elasticity indicator 43 can be configured, for example, with a single LED that emits three colors of light, changing color from "blue," "green," or "red" to correspond to "low," "medium," or "high" skin elasticity to notify the user of the skin elasticity. By providing the skin elasticity indicator 43 on the razor head 11 in this way, the user can easily visually recognize the light-emitting state and check the skin elasticity state. While a light-emitting display skin elasticity indicator 43 provided on the main body case 10 may be obscured by the user's hand holding the main body case 10, this is less likely when provided on the razor head 11. Because the back of the electric shaver 1 is primarily reflected in a mirror when in use, it is preferable to provide the skin elasticity indicator 43 on the back (rear) of the razor head 11. Alternatively, a preferred configuration is one in which the skin elasticity indicator 43 is provided inside the razor head 11, and light is emitted through a transparent portion (including a translucent portion) of the case body constituting the razor head 11 or the outer blade 13. With these configurations, the user can easily see the light emitted by the skin elasticity indicator 43 through a mirror, making it easy to check the state of skin elasticity. Furthermore, the skin elasticity indicator 43 can be configured not only as a light-emitting means that appeals to the user's vision, but also as a sound-emitting means such as a buzzer that appeals to the user's hearing, or a vibration means such as a vibrator that appeals to the user's touch. The skin elasticity indicator 43 may be configured using two or more of these means.

[0072] The auxiliary application stored in the smartphone 5 includes a skin elasticity display means for displaying the magnitude of skin elasticity measured by the skin elasticity sensor 40 on the display 52. ​​The skin elasticity display 88 by the skin elasticity display means consists of three bars arranged in a straight line, with each bar corresponding to "small," "medium," and "large" from left to right. When information regarding the magnitude of skin elasticity is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5 via the communication interfaces 24 and 64, the skin elasticity display means controls the skin elasticity display 88 to blink only the bar corresponding to that size among the three bars. At this time, the remaining two bars may be either constantly lit or constantly off. Alternatively, the skin elasticity display 88 may be configured, for example, with three constantly lit bars and an arrow pointing to one of the bars.

[0073] Generally, skin elasticity varies from part to part of the face. In areas with low skin elasticity, when the functional part 12 of the electric shaver 1 is pressed, the facial skin is likely to slip into the holes in the outer blade 13, and the stuck part may be rubbed hard by the inner blade 14, causing serious damage. Therefore, it is preferable to press the functional part 12 with a relatively weak force. On the other hand, in areas with high skin elasticity, the facial skin is less likely to slip into the holes in the outer blade 13, even if the functional part 12 is pressed relatively hard. As in this embodiment, by displaying the skin elasticity measured by the skin elasticity sensor 40 on the display 52, the user can be informed in real time of the skin elasticity of the part directly facing the functional part 12, and can be prompted to optimize the pressing force of the functional part 12 against that part.

[0074] Furthermore, the control unit 25 of the electric shaver 1 automatically controls the rotation speed of the motor 16 in accordance with the skin elasticity measured by the skin elasticity sensor 40. Specifically, the smaller the measurement value of the skin elasticity sensor 40, the lower the rotation speed of the motor 16. In this embodiment, the rotation speed when the skin elasticity is "high" is set to the normal rotation speed of 6500 rpm, the rotation speed when the skin elasticity is "medium" is set to the slightly reduced rotation speed of 6300 rpm, and the rotation speed when the skin elasticity is "low" is set to the reduced rotation speed of 6000 rpm.

[0075] By automatically controlling the rotation speed of the motor 16 in accordance with the measurement value of the skin elasticity sensor 40, the user can know the level of their own skin elasticity based on the skin elasticity notification unit 43 and skin elasticity display 88 described above, as well as changes in the pitch of the driving sound of the motor 16. Furthermore, in this embodiment, the rotation speed of the motor 16 is reduced in consideration of the fact that facial skin is more likely to become trapped in the holes of the outer blade 13 when the functional unit 12 is pressed against areas with lower skin elasticity, thereby minimizing damage to facial skin trapped in the holes of the outer blade 13 from the outer blade 13 and the inner blade 14. Furthermore, because the rotation speed of the motor 16 is automatically controlled, the user is not required to go through the trouble of changing the rotation speed. Since the remaining features are the same as those of the interlocking system of the first embodiment, the same components are designated by the same reference numerals and their description is omitted.

[0076] The interlocking system according to this embodiment can be implemented in the following manner.

[0077] A linking system that links a small electrical device 1 having a functional unit 12 for a human body with a portable display device 5 having a display unit 52, The small electrical device 1 and the display device 5 each have a communication interface 24 / 64 for establishing a connection with each other; The display device 5 has an auxiliary function that assists in the use of the small electrical device 1 using the display unit 52, The small electrical device 1 is provided with an operation switch 21 for activating an auxiliary function via the communication interface 24 / 64, The small electrical appliance 1 is an electric shaver equipped with a skin elasticity measuring means 40 for measuring the skin elasticity of a user, The auxiliary function of the display device (5) is a linked system characterized in that it includes a skin condition display means for displaying the skin elasticity measured by the skin elasticity measuring means (40) on the display unit (52).

[0078] The small electric device 1, which is an electric shaver, is equipped with a skin elasticity measuring means 40 that measures the skin elasticity of the user, and the skin elasticity measured by the skin elasticity measuring means 40 is displayed on the display unit 52 of the display device 5. This allows the user to be informed of their own skin elasticity and encourage them to press the functional unit 12 of the small electric device 1 with a force that matches their skin elasticity. In particular, by encouraging the user not to press the functional unit 12 too hard on areas of the skin with low elasticity, damage to those areas from the functional unit 12 can be reduced.

[0079] The electric shaver 1 according to this embodiment can be implemented in the following forms.

[0080] An electric shaver characterized by comprising a skin elasticity measuring means 40 for measuring skin elasticity.

[0081] An electric shaver equipped with a skin elasticity measuring means 40 for measuring skin elasticity can inform the user of their own skin elasticity and encourage them to press the cutting blades 13, 14 with a force commensurate with their skin elasticity. In particular, the user is encouraged not to press the cutting blades 13, 14 too hard on areas of skin with low elasticity, thereby minimizing damage to those areas caused by the cutting blades 13, 14.

[0082] The device is equipped with an outer cutter 13, an inner cutter 14 that slides against the outer cutter 13, a motor 16 that drives the inner cutter 14, and a skin elasticity measuring means 40 that measures skin elasticity. An electric shaver characterized in that the rotation speed of the motor is controlled based on the measurement results of the skin elasticity measuring means.

[0083] In an electric shaver in which the rotation speed of the motor 16 is controlled based on the measurement results of the skin elasticity measuring means 40, the user can know the level of their own skin elasticity based on changes in the pitch of the driving sound of the motor 16. Informing the user of their own skin elasticity in this way can encourage them to press the outer cutter 13 with a force appropriate to their skin elasticity. In particular, encouraging the user not to press the outer cutter 13 too hard on areas of skin with low elasticity can reduce damage to those areas from the inner cutter 14.

[0084] The device is equipped with an outer cutter 13, an inner cutter 14 that slides against the outer cutter 13, a motor 16 that drives the inner cutter 14, and a skin elasticity measuring means 40 that measures skin elasticity. The rotation speed of the motor 16 is controlled based on the measurement result of the skin elasticity measuring means 40. The electric shaver is characterized in that when the measured value of the skin elasticity measuring means 40 increases, the rotation speed of the motor 16 is automatically controlled to increase, and when the measured value of the skin elasticity measuring means 40 decreases, the rotation speed of the motor 16 is automatically controlled to decrease.

[0085] In an electric shaver in which the rotation speed of the motor 16 is controlled based on the measurement results of the skin elasticity measuring means 40, the user can know the level of their own skin elasticity based on changes in the pitch of the driving sound of the motor 16. Informing the user of their own skin elasticity in this way encourages the user to press the outer cutter 13 with a force appropriate to their skin elasticity. In particular, in areas with low skin elasticity, facial skin is likely to get caught in the holes of the outer cutter 13 when the outer cutter 13 is pressed against the shaver, and this can be pinched between the outer cutter 13 and the inner cutter 14, resulting in significant damage. Informing the user of their own skin elasticity as described above encourages the user to refrain from pressing the outer cutter 13 too hard against areas with low skin elasticity, thereby minimizing damage to those areas from the outer cutter 13 and inner cutter 14. Furthermore, by automatically reducing the rotation speed of the motor 16 in areas with low skin elasticity, damage to facial skin caught in the holes of the outer cutter 13 from the inner cutter 14 can be reduced.

[0086] An electric shaver comprising a main body case 10 that also serves as a grip, and a razor head 11 supported on an upper portion of the main body case 10, The razor head 11 includes an outer cutter 13, an inner cutter 14 that slides against the outer cutter 13, and a skin elasticity measuring means 40 that measures skin elasticity. An electric shaver characterized in that a skin elasticity measuring means (40) is provided at a position adjacent to an outer cutter (13).

[0087] An electric shaver equipped with a skin elasticity measuring means 40 for measuring skin elasticity can inform the user of their own skin elasticity and encourage them to press the outer cutter 13 with a force commensurate with their skin elasticity. In particular, the user is encouraged not to press the outer cutter 13 too hard against areas of skin with low elasticity, thereby minimizing damage to those areas from the inner cutter 14. Furthermore, if the skin elasticity measuring means 40 is provided adjacent to the outer cutter 13, the skin elasticity measuring means 40 will unconsciously come into contact with the skin surface when the user places the outer cutter 13 against the skin surface, improving usability for the user.

[0088] Example 3 Example 3 is applied to a system linking a facial beauty tool with a smartphone. As shown in FIG. 20 , the configuration of the smartphone (display device) 5 is the same as in Example 1. The beauty tool (small electrical device) 2 includes a vertically long main body case 30 and a skin electrode (functional unit) 32 protruding from the upper front surface of the main body case 30. The majority of the lower side of the main body case 30 forms a grip, the surface of which is provided with a pair of left and right grip electrodes 33 and a switch button 35 that can be pressed inward. The main body case 30 houses a vertically long control board 37 and a secondary battery (battery) 38 that serves as the entire power source for the beauty tool 2. As in Example 1, the control board 37 is equipped with a drive switch (operation switch) 21, an acceleration sensor 22, a gyro sensor 23, a communication interface 24, a control unit 25, and the like.

[0089] In the ion derivation mode of the beauty tool 2, a positive pulse current is supplied to the skin electrode 32, and a negative pulse current is supplied to the grip electrode 33. When a cotton mat impregnated with lotion is attached to the outer surface of the skin electrode 32 of the beauty tool 2 set in the ion derivation mode and the cotton mat is slowly slid along the facial skin, fine dirt particles embedded in wrinkles, folds, pores, etc. can be removed. On the other hand, in the ion introduction mode, a negative pulse current is supplied to the skin electrode 32, and a positive pulse current is supplied to the grip electrode 33. When a cotton mat impregnated with lotion is attached to the outer surface of the skin electrode 32 of the beauty tool 2 set in the ion introduction mode and the cotton mat is slowly slid along the facial skin, the lotion can penetrate the skin surface, enhancing the moisturizing effect.

[0090] The memory 61 of the smartphone 5 according to this embodiment also stores an auxiliary app, which is an application program that assists the user in using the beauty tool 2. Comparing the auxiliary apps of the first and third embodiments, the illustration adding means in particular differs significantly. The illustration adding means here adds auxiliary illustrations 70 to enhance the appearance of the user's facial area displayed on the display 52 as the user progresses with beauty treatments. For example, immediately after launching the app before starting beauty treatments, an unprocessed illustration 71 representing dark blemishes or freckles is added to the facial area, and the unprocessed illustration 71 gradually fades as the beauty treatments progress. Alternatively, immediately after launching the app, an auxiliary illustration 70 representing a simple accessory is added to the facial area, and as the beauty treatments progress, the auxiliary illustration 70 is changed to a more luxurious accessory.

[0091] The auxiliary app of this embodiment includes the same mirroring means, video still means, lighting control means, zoom control means, and instruction display means as in Example 1, but the inversion instruction means is omitted. The device status notification means displays a remaining battery level indicator 75 and a time indicator 79 on the display 52 as the device status of the beauty tool 2. The electrical device control means displays on the display 52 a drive button 82 for turning on and off the supply of pulse current to the skin electrode 32 and the grip electrode 33, a lock button 83 for locking the supply of pulse current regardless of the timer function of the beauty tool 2, and a current stimulation lever (corresponding to the rotation speed lever 81 in Example 1) for changing the intensity of the pulse current. Since the rest is the same as in Example 1, the same components are designated by the same reference numerals and their description is omitted.

[0092] As described above, in the interlocking system according to each embodiment, the electric shaver 1 or beauty tool 2 is connected to the smartphone 5 via the communication interfaces 24 / 64, and when the user operates the drive switch 21 of the electric shaver 1 or beauty tool 2, the auxiliary app on the smartphone 5 is activated in the background. When the auxiliary app is activated, a push notification is displayed on the display 52, and the user can switch the display 52 to the auxiliary app screen with the simple operation of simply tapping this notification. The interlocking system according to each embodiment described above simplifies the operation of the smartphone 5 when the user starts using the electric shaver 1 or beauty tool 2 in conjunction with the smartphone 5, thereby improving user convenience.

[0093] The display device 5 may be a smartphone equipped with a general-purpose mobile operating system, or may be a device equipped with a dedicated operating system specialized for linking with the small electrical devices 1 and 2. In this case, when a user operates the operation switch 21 of the small electrical device 1 or 2, not only does the auxiliary function of the display device 5 start up, but the operating system can also be designed so that the display 52 immediately switches to the screen for the auxiliary function, further improving user convenience. The display 52 of the display device 5 may include a material whose reflectivity increases when a current is passed through it. In this case, the display 52 can be mirrored simply by passing a current through it, without using a camera 53.

[0094] The mirroring means is not essential, and the auxiliary functions of the display device 5 may be configured, for example, only by the device status notification means and the electrical device control means. The operation switch 21 for activating the auxiliary functions of the display device 5 is not limited to a drive switch for driving the small electrical devices 1 and 2, but may be a dedicated switch provided on the small electrical devices 1 and 2 separately from the drive switch. The communication interfaces 24 and 64 of the small electrical devices 1 and 2 and the display device 5 may be wired interfaces.

[0095] The interlocking systems according to the above-described embodiments can be implemented in the following forms.

[0096] A linking system for linking a small electric device (1 / 2) having a functional part (12 / 32) for a human body with a portable display device (5) having a display part (52), The small electrical appliances 1 and 2 and the display device 5 are each provided with a communication interface 24 and 64 for establishing a connection with each other; The display device 5 has an auxiliary function of assisting the use of the small electrical appliances 1 and 2 using the display unit 52, An interlocking system characterized in that the small electrical appliances (1, 2) are provided with an operation switch (21) for activating an auxiliary function via a communication interface (24, 64).

[0097] In the above-described interlocking system, small electrical appliances 1 and 2 are connected to display device 5 via communication interfaces 24 and 64, and when a user operates operation switch 21 of small electrical appliance 1 and 2, an auxiliary function that assists in the use of small electrical appliance 1 and 2 is activated on display device 5. By enabling the auxiliary function of display device 5 to be activated from small electrical appliance 1 and 2, the user's operation of display device 5 when starting to use small electrical appliance 1 and 2 together can be simplified, improving user convenience. That is, in display device 5 equipped with a dedicated operating system specialized for interlocking with small electrical appliance 1, the auxiliary function display can be displayed on display unit 52 simply by activating the auxiliary function from small electrical appliance 1 and 2, without operating display device 5. Furthermore, in display device 5 such as a mobile communication terminal in which an auxiliary app that performs the auxiliary function is stored as one of the application programs, operating operation of operation switch 21 of small electrical appliance 1 and 2 activates the auxiliary app in the background, and the display unit 5 simply needs to switch to the auxiliary app screen.

[0098] An interlocking system in which an operation switch for activating an auxiliary function of a display device (5) is a drive switch (21) for driving functional parts (12, 32) of small electrical appliances (1, 2).

[0099] If the operating switch for activating the auxiliary function of the display device 5 is a drive switch 21 for driving the functional units 12 and 32 of the small electrical devices 1 and 2, the user can drive the functional units 12 and 32 and activate the auxiliary function simultaneously with a single touch (one operation after touching the drive switch 21), thereby improving user convenience.

[0100] An interlocking system in which the communication interfaces 24 and 64 of the small electrical devices 1 and 2 and the display device 5 are wireless interfaces compatible with short-range wireless communication.

[0101] If the communication interfaces 24, 64 of the small electrical devices 1, 2 and the display device 5 are wireless interfaces compatible with short-range wireless communication, the communication cables that are essential when these are wired interfaces can be omitted, eliminating the inconvenience of the communication cables getting caught on objects and the hassle of carrying around communication cables.

[0102] The auxiliary function of the display device 5 is an interlocking system including a mirroring means that enables the display unit 52 to be used as a mirror.

[0103] If the auxiliary function of the display device 5 includes a mirroring means that enables the display unit 52 to be used as a mirror, the display device 5 can be used as a substitute for a hand mirror when using the small electric appliances 1 and 2, eliminating the hassle of always carrying a hand mirror together with the small electric appliances 1 and 2 when going out.

[0104] A display unit 52 and a camera 53 are arranged on the front surface 51 of the display device 5. The interlocking system is configured so that the mirroring means displays the moving image taken by the camera 53 on the display unit 52 in real time.

[0105] Many display devices 5, such as smartphones, are already equipped with cameras. Therefore, if the mirroring means is configured to display video captured by the camera 53 on the display unit 52 in real time, the overall cost of the linked system can be reduced by utilizing the existing hardware of the display device 5.

[0106] An interlocking system in which the display device 5 has a zoom function for the camera 53.

[0107] If the display device 5 has a zoom function for the camera 53, the user can change the range of the face displayed on the display unit 52 simply by controlling the zoom function to change the zoom magnification of the camera 53 without having to move the face closer to or farther away from the camera 53, thereby improving user convenience.

[0108] An interlocking system in which the zoom function of a camera 53 is controlled in conjunction with the operation of small electrical devices 1 and 2 by a user.

[0109] When using small electrical devices 1 and 2 and display device 5 in place of a hand mirror at the same time, many users hold small electrical devices 1 and 2 in their dominant hand, making it easier to operate small electrical devices 1 and 2 than display device 5. Therefore, if the zoom function of camera 53 is controlled in conjunction with the user's operation of small electrical devices 1 and 2, the user can smoothly change the zoom magnification of camera 53.

[0110] The zoom function of the camera 53 is controlled in conjunction with the movement of the small electrical device 1 or 2 by the user.

[0111] When small electric appliances 1 and 2, such as electric shavers and beauty tools, are used in a normal manner, movement operations such as moving the small electric appliances 1 and 2 along the skin of the face are involved. Therefore, if the zoom function of camera 53 is controlled in conjunction with the movement operations of small electric appliances 1 and 2, the zoom magnification is automatically changed without the user having to perform a specific operation for zoom control, thereby eliminating the need for the user to perform zoom operations.

[0112] An interlocking system in which the zoom function of the camera 53 is controlled according to the part of the user's face facing the functional part 12 / 32 of the small electrical device 1 / 2.

[0113] Facial skin treatment using small electrical appliances 1 / 2, such as electric shavers and beauty tools, is not performed uniformly over the entire face; there are areas that are treated relatively roughly and areas that are treated more carefully. Therefore, if the zoom function of camera 53 is controlled according to the part of the user's face that faces functional units 12 / 32 of small electrical appliances 1 / 2, i.e., the part of the face that the user intends to treat with functional units 12 / 32, the zoom magnification of camera 53 can be automatically changed to a value appropriate for that part, further improving user convenience.

[0114] A linked system in which the zoom function of the camera 53 is controlled in conjunction with the movement of the display device 5 by the user.

[0115] If the zoom function of camera 53 is controlled in conjunction with the movement of display device 5, the user can change the zoom magnification of camera 53 with the simple operation of simply moving display device 5. When using small electrical devices 1 and 2 and display device 5 in place of a hand mirror at the same time, display device 5 is often held in the non-dominant hand, but if the only operation is to move display device 5, zoom operation can be easily performed even with the non-dominant hand.

[0116] The display device 5 has a face recognition function for detecting a face area from a video captured by the camera 53, A linked system in which the zoom function of the camera 53 is controlled according to the facial expression of the facial area recognized by the face recognition function.

[0117] If the zoom function of camera 53 is controlled in accordance with the facial expression of the facial area recognized by the face recognition function, the user can change the zoom magnification of camera 53 simply by changing the facial expression captured by camera 53. This eliminates the need to operate small electrical devices 1 and 2 or display device 5 to change the zoom magnification, thereby improving user convenience.

[0118] The auxiliary function of the display device 5 includes an illustration adding means for adding an auxiliary illustration 70 to the face area displayed on the display unit 52, The auxiliary illustrations include at least one of an unprocessed illustration 71 indicating that the processing by the functional unit 12 / 32 has not been completed and a processed illustration 72 indicating that the processing by the functional unit 12 / 32 has been completed; An interlocking system in which the illustration adding means changes the auxiliary illustration 70 displayed on the display unit 52 according to the progress of processing by the functional units 12 and 32.

[0119] Adding auxiliary illustrations 70, such as unprocessed illustrations 71 and processed illustrations 72, to the facial region displayed on the display unit 52 adds a game-like element to the processing by the functional unit 12·32, which tends to be monotonous, and allows the user to enjoy the processing by the functional unit 12·32. Furthermore, the user is prompted to continue processing by the functional unit 12·32 until all unprocessed illustrations 71 have disappeared from the facial region on the display unit 52, or until processed illustrations 72 have been added to the entire processed portion, thereby preventing partial insufficient processing.

[0120] The small electrical device 1 is a hair removal device, Auxiliary illustration 70 includes raw illustration 71 showing exaggerated body hair; The illustration adding means is a linked system that adds an unprocessed illustration 71 to the face area displayed on the display unit 52 before the hair removal process is started by the functional unit 12, and erases the unprocessed illustration 71 in order from the part of the face area that the functional unit 12 has passed through a predetermined number of times.

[0121] The auxiliary illustration 70 includes an unprocessed illustration 71 representing exaggerated body hair, and before the hair removal process by the functional unit 12 begins, the unprocessed illustration 71 is added to the face area displayed on the display unit 52, and the unprocessed illustration 71 is erased in order from the part of the face area that the functional unit 12 has passed through a predetermined number of times. This allows the user to enjoy the hair removal process, and furthermore, the user is prompted to continue the hair removal process until all of the unprocessed illustrations 71 have been erased from the face area, preventing partial insufficient hair removal. The user can confirm that the hair removal process has been completed for the entire face when all of the unprocessed illustrations 71 have been erased from the display unit 52.

[0122] The small electrical device 2 is a beauty device for facial skin, The auxiliary illustration 70 changes the aesthetic appearance of the face area displayed on the display unit 52, The illustration adding means is a linkage system that changes the auxiliary illustration 70 added to the facial area so that the appearance of the facial area becomes more beautiful as the cosmetic treatment by the functional unit 32 progresses.

[0123] The auxiliary illustrations 70 change the aesthetic beauty of the facial area, and the auxiliary illustrations 70 added to the facial area are changed so that the facial area becomes more aesthetically pleasing as the cosmetic treatment by the functional unit 32 progresses. This allows the user to enjoy the cosmetic treatment, and furthermore, the user is encouraged to continue the cosmetic treatment until the facial area becomes aesthetically pleasing, preventing partial insufficient treatment.

[0124] The auxiliary function of the display device 5 is a linkage system including a moving image freezing means for freezing the moving image displayed on the display unit 52.

[0125] By using the video stilling means for freezing the video displayed on display unit 52, the user can freeze the video with the part of the face they want to check displayed on camera 53, and then move display unit 52 in the still state to a position where it is easy to see, such as in front of the face, to easily check that part. In particular, it is easy to check even parts such as under the chin, which are difficult to check with a normal hand mirror.

[0126] The linkage system is such that the video stilling means freezes the video displayed on the display unit 52 in conjunction with the stopping operation of the functional units 12 and 32 of the small electric appliances 1 and 2.

[0127] When freezing the video displayed on the display unit 52 and checking it, the processing by the functional unit 12·32 is usually suspended, and continuing to operate the functional unit 12·32 during the check results in waste, such as increased power consumption. Freezing the video in conjunction with the stopping operation of the functional unit 12·32 stops the functional unit 12·32 while the video is still, preventing the above-mentioned waste. Furthermore, it eliminates the need for separate operations to freeze the video and stop the functional unit 12·32, thereby reducing the user's effort. Furthermore, stopping the functional unit 12·32 while the video is still allows the user to check the still image in a relaxed state without being distracted by the driving noise of the functional unit 12·32.

[0128] This is an interlocking system in which the display unit 52 of the display device 5 is turned off when a predetermined time has elapsed since the video stilling means stopped the video.

[0129] If the display unit 52 of the display device 5 is set to turn off after a predetermined time has elapsed since the video was stopped, it is possible to prevent the display unit 52 from being wasted by continuing to be lit when the user has finished using the small electrical device 1 / 2 and has not turned it off, thereby reducing the power consumption of the display device 5.

[0130] The small electrical appliance 1 is an electric shaver, A camera 53 is disposed above the front surface 51 of the display device 5 in the normal position. The auxiliary function of the display device 5 is an interlocking system including an inversion instruction means for instructing the user to invert the display device 5 upside down.

[0131] The inverted position where camera 53 is located at the bottom of display device 5 makes it easier to capture images of the lower part of the face where beard grows, particularly the area under the chin, rather than the normal position where camera 53 is located at the top of display device 5. Therefore, if display unit 52 is to be used like a hand mirror when shaving, it is preferable to have display device 5 in the inverted position. The inversion instruction means that instructs the user to invert display device 5 upside down encourages the user to invert display device 5 when shaving, allowing the user to comfortably shave the area under the chin, etc.

[0132] The inversion instruction means displays upside-down characters on the display unit 52.

[0133] By displaying upside-down characters on the display unit 52 as an inversion instruction means, the user can intuitively understand that the display device 5 needs to be inverted, and can more reliably adopt the inverted position.

[0134] An interlocking system in which the inversion instruction means displays characters or symbols on the display unit 52 instructing upside-down inversion.

[0135] As an inversion instruction means, if characters or symbols instructing upside down are displayed on the display unit 52, the user is clearly informed that the display device 5 needs to be inverted upside down, and the user can be more reliably inclined to take the inverted position.

[0136] The inversion instruction means inverts the moving image displayed on the display unit 52 upside down.

[0137] By inverting the moving image displayed on the display unit 52 upside down as an inversion instruction means, the user is more likely to adopt the inverted posture, since the display unit 52 is useless as a hand mirror in the normal posture.

[0138] The auxiliary function of the display device 5 is an interlocking system including an appliance status notification means for displaying the appliance status of the small electric appliances 1 and 2 on the display unit 52 .

[0139] When the device status of the small electrical appliances 1 and 2 is displayed on the display unit 52 of the display device 5, the user can easily check the device status of the small electrical appliances 1 and 2 by looking at the display unit 52 even while using the small electrical appliances 1 and 2, when it is difficult to see the appliances 1 and 2.

[0140] The device status displayed on the display unit 52 is an interlocking system including the remaining battery power of the small electrical devices 1 and 2.

[0141] By displaying the remaining battery power of the small electrical appliance 1 / 2 on the display unit 52, the user can easily and frequently check the remaining battery power while using the small electrical appliance 1 / 2. In particular, when the user is out and about and it is difficult to charge or replace the battery 18 / 38, the user can be immediately notified when the remaining battery power is low and be urged to finish using the small electrical appliance 1 / 2 before the remaining battery power runs out.

[0142] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system including the replacement time of the cutting blades 13 and 14 that constitute the functional unit 12.

[0143] By displaying the replacement time of the cutting blades 13, 14 on the display unit 52, the user can be reliably notified that the replacement time is approaching, and can be urged to quickly replace the cutting blades 13, 14. This can prevent the user from continuing to use cutting blades 13, 14 that have become dull.

[0144] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system that includes the cleaning time of the functional unit 12.

[0145] Displaying the time to clean the functional part 12 on the display unit 52 reliably notifies the user that the time to clean is approaching, encouraging early cleaning of the functional part 12. This maintains the functional part 12 in a hygienic state and suppresses the generation of unpleasant odors associated with the oxidation and fermentation of organic matter. Furthermore, because excessive hair debris and the like that accumulates in the functional part 12 can increase the load on the motor 16, early cleaning of the functional part 12 to remove hair debris and the like can improve the lifespan of the motor 16.

[0146] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system including the magnitude of the load acting on the functional unit 12.

[0147] There is a correlation between the strength of the force with which the user presses the functional unit 12 against the skin and the magnitude of the load acting on the functional unit 12; the stronger the pressing force, the greater the load. Therefore, by displaying the magnitude of the load on the functional unit 12 on the display unit 52, the user can be informed of the strength of the pressing force at that time. By checking the magnitude of the load while shaving, the user can always maintain the pressing force of the functional unit 12 at an appropriate strength, thereby reducing the strain on the skin.

[0148] The device status displayed on the display unit 52 is an interlocking system including the continuous use time of the small electrical devices 1 and 2.

[0149] Continuous use of the small electrical appliances 1 and 2 for long periods of time can lead to inconveniences such as excessive heat generation, etc. Therefore, by displaying the continuous use time of the small electrical appliances 1 and 2 on the display unit 52, the user can be alerted to avoid continuous use for long periods of time.

[0150] The display device 5 is equipped with a vibrator 59, The device status notification means is an interlocking system that drives a vibrator 59 when the device status of the small electrical devices 1 and 2 satisfies a predetermined condition.

[0151] When the device state of the small electric devices 1 and 2 satisfies a predetermined condition, the vibrator 59 is driven, and not only the display unit 52 appeals to the user's visual sense, but also the vibrator 59 appeals to the user's tactile or auditory sense, so that the user can be more reliably informed that the predetermined condition has been met.

[0152] The display device 5 is equipped with a lighting device 56, An interlocking system in which the lighting device 56 turns on when the auxiliary function is activated.

[0153] When the auxiliary function is activated, lighting device 56 provided on display device 5 can be turned on to clearly notify the user that the auxiliary function has been activated. If camera 53 and lighting device 56 are located on the same side of display device 5, lighting device 56 can be used to illuminate the subject being photographed by camera 53 when small electrical devices 1 and 2 and display device 5 are used in a dimly lit location. Therefore, regardless of the brightness of the location where small electrical devices 1 and 2 and display device 5 are used, clear moving images can be displayed on display unit 52, improving user convenience.

[0154] The auxiliary function of the display device 5 is an interlocking system including an electric appliance control means for controlling the functional parts 12 and 32 of the small electric appliances 1 and 2 via the communication interfaces 24 and 64.

[0155] By making it possible to control the functional units 12 and 32 of the small electrical devices 1 and 2 from the display device 5 via the communication interfaces 24 and 64, the user can control and operate the functional units 12 and 32 from both the small electrical devices 1 and 2 and the display device 5, thereby improving user convenience.

[0156] The electrical appliance control means is an interlocking system including a locking function that keeps the functional parts 12 and 32 of the small electrical appliances 1 and 2 in an operating state.

[0157] The lock function that keeps the functional units 12·32 of the small electrical appliances 1·2 in a running state prevents the functional units 12·32 from stopping due to the user's mistaken operation of the small electrical appliances 1·2 or the activation of a timer against the user's will, allowing the user to use the small electrical appliances 1·2 more comfortably.

[0158] The electrical appliance control means is an interlocking system that controls the outputs of the functional units 12 and 32 of the small electrical appliances 1 and 2 in conjunction with the displacement operation of the display device 5.

[0159] By making it possible to control the output of the functional units 12 and 32 of the small electrical devices 1 and 2 in conjunction with the displacement operation of the display device 5, the user can control the output of the functional units 12 and 32 more quickly than by operating the buttons on the display device 5, thereby improving user convenience.

[0160] The small electrical appliance 1 is an electric shaver powered by a motor 16, An interlocking system in which the rotational speed of the motor 16 is controlled by an electrical equipment control means.

[0161] If the rotation speed of the motor 16, which is the driving source of the electric shaver 1, can be controlled in conjunction with the displacement operation of the display device 5, the user can quickly change the rotation speed of the motor 16 at will depending on the part of the body that the functional part 12 faces, for example, by setting the motor 16 to a low speed when shaving the beard under the nose, thereby further improving user convenience.

[0162] The auxiliary function of the display device 5 is an interlocking system including an instruction display means for displaying instruction manuals for the small electrical appliances 1 and 2 on the display unit 52.

[0163] By using the instruction manual display means that displays the instruction manual of the small electrical device 1 / 2 on the display unit 52, the user can immediately display and read the instruction manual on the display unit 52 when he or she wants to check how to use the small electrical device 1 / 2. This eliminates the need to carry around the instruction manual booklet, thereby improving user convenience. [Explanation of symbols]

[0164] 1. Small electrical appliances (electric razors) 2. Small electrical appliances (beauty equipment) 5. Display device (smartphone) 12 Functional Section 13 Cutting blade (outer blade) 14 Cutting blade (inner blade) 16 motors 21 Operation switch (drive switch) 32 Functional part (skin electrode) 52 Display unit (display) 53 Camera 56 Lighting device (LED) 59 Vibrator 70 Supplementary Illustrations 71 Raw Illustrations 72 processed illustrations

Claims

1. A linkage system that links a small electrical device having a functional part for a human body with a display device having a display part, the small electrical device and the display device each have a communication interface for establishing a connection with each other; the display device has an auxiliary function of assisting in the use of the small electrical device by using the display unit, The auxiliary function is characterized in that it comprises a major arc-shaped scale indicating the usage status of the small electrical appliance and an indicator needle pointing to the scale.

2. The interlocking system of claim 1, wherein the major arc-shaped scale is configured with a moderate zone indicating that the small electrical appliance is being used moderately and an excessive zone indicating that the small electrical appliance is being used excessively.

3. The interlocking system according to claim 2 , wherein the auxiliary function displays a prompt to make adjustment so that the indicator needle points to the moderate zone.

4. The interlocking system according to claim 1 , wherein the auxiliary function displays the continuous use time of the small electrical appliance.

5. 4. The interlocking system according to claim 1, wherein the auxiliary function displays the remaining battery power of the small electrical device.

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