JP5547573B2 - Seat belt auxiliary device - Google Patents

Description

  The present invention relates to a seat belt auxiliary device, and more particularly, to a seat belt auxiliary device that can be suitably used for a seat belt device provided with a buckle.

  Conventional examples include a webbing for restraining an occupant (seat belt wearer) sitting on a vehicle seat, a tongue provided on the webbing, a buckle engaged with and disengaged from the tongue, and a seat belt wearer There is disclosed a seatbelt device including a tongue and a visual operation assisting means for assisting a visual operation for visually recognizing the mutual positions of the tongue and the buckle when engaging with the buckle.

  Here, the visual recognition operation assisting means has a photographing unit that photographs the tongue and the buckle from the front of the seat belt wearer and a display unit that displays an image photographed by the photographing unit (Patent Document 1). (See paragraphs 0080 and 0081.)

JP 2010-64556 A

  However, in the conventional example, since the photographing part of the visual assisting means photographs the tongue and the buckle from the front of the seat belt wearer, a part of the body such as the hand or arm of the seat belt wearer having the tongue plate, Due to the presence of various front shooting obstacles such as thick clothing such as down jackets worn in winter and armrests of seats where seat belt wearers sit, there is a problem that the situation where the tongue plate is inserted into the buckle cannot be suitably photographed. It was.

  Accordingly, it is an object of the present invention to provide a novel seat belt auxiliary device capable of easily inserting a tongue plate into a buckle.

[1] In order to achieve the above object, according to the present invention, a tongue plate, a buckle coupled to the tongue plate, and an image in which the tongue plate is inserted into the buckle are displayed laterally or substantially in the insertion direction of the tongue plate. There is provided a seatbelt assisting device , comprising: a camera that captures an image from a facing direction; and an image display unit that displays an image captured by the camera, wherein the camera is provided on the buckle .

  According to one aspect of the present invention, the camera shoots the insertion state of the tongue plate from the side or substantially opposite direction of the tongue plate insertion direction, compared with the conventional example of shooting from the front of the seat belt wearer, Even if a front photographing obstacle is present, various effects such as being able to suitably photograph the insertion state of the tongue plate are produced. For this reason, the seatbelt auxiliary device which can insert a tongue plate in a buckle easily can be provided.

FIG. 1 is a perspective view showing a positional relationship between a tongue plate, a buckle and a camera of the seatbelt auxiliary device according to the first embodiment of the present invention. FIG. 2 is a conceptual diagram showing the arrangement and connection relationship of the seat belt auxiliary device according to the first embodiment. FIG. 3 is a plan view showing a buckle facing surface of the tongue plate according to the first embodiment. FIG. 4 is an image diagram illustrating an example of an image captured by the camera of the seatbelt auxiliary device according to the first embodiment. FIG. 5 is an image diagram illustrating an example of an image photographed by the camera of the seat belt auxiliary device according to the first embodiment. FIG. 6 is an image diagram illustrating an example of an image photographed by the camera of the seat belt auxiliary device according to the first embodiment. FIG. 7 is an image diagram illustrating an example of a mirror image displayed by reversing the left and right of the image captured by the camera of the seatbelt auxiliary device according to the first embodiment. FIG. 8 is a conceptual diagram illustrating an example of the arrangement and connection relationship of the seat belt auxiliary device according to the second embodiment. FIG. 9 is a conceptual diagram illustrating an example of the arrangement and connection relationship of the seat belt auxiliary device according to the second embodiment. FIG. 10 is an image diagram illustrating an example of an image photographed by the camera of the seat belt auxiliary device according to the second embodiment. FIG. 11 is a perspective view showing the positional relationship between the tongue plate, the buckle, and the camera of the seat belt auxiliary device according to the third embodiment. FIG. 12 is a conceptual diagram showing the arrangement and connection relationship of the seatbelt auxiliary device according to the second embodiment. FIG. 13 is an image diagram illustrating an example of an image photographed by the camera of the seat belt auxiliary device according to the third embodiment.

(First embodiment of the present invention)
As shown in FIGS. 1 and 2, the seatbelt auxiliary device 1 according to the first embodiment includes a tongue plate 2, a buckle 3, a camera 4, an image display unit 5, and a control unit 6. Moreover, this seatbelt auxiliary | assistance apparatus 1 is further provided with the illumination part 7 as arbitrary members, as shown in FIG. Here, an arrow A in FIG. 2 indicates an insertion direction of the tongue plate 2 with respect to the buckle 3. An arrow B in FIG. 2 indicates the shooting direction of the camera 4.

  As shown in FIG. 2, the tongue plate 2 is formed in a flat plate-like shape as in the prior art. Here, it is preferable that the tongue plate 2 has the light diffusion part 2b formed in any one of the buckle opposing surface 2a, the periphery, or the whole surface. As the shape of the light diffusing portion 2b, a serrated shape formed on the entire surface of the buckle facing surface 2a as shown in FIG. 3, or a hemispherical convex shape formed on a part or the periphery of the buckle facing surface 2a (not shown). An example of this is given.

  The buckle 3 is a member that is coupled to the tongue plate 2 as shown in FIG. As the buckle 3, the same structure as the conventional one can be adopted. In the buckle 3 of the first embodiment, it is preferable that the insertion reference line 3L is formed by printing. The insertion reference line 3L is formed, for example, in the region of the narrow side surface 3a or 3b of the buckle 3 photographed by the camera 4 so as to extend in parallel with the insertion direction of the tongue plate 2. The narrow side surface 3a or 3b of the buckle 3 is one of the two side surfaces 3a and 3b having a narrow area among the four side surfaces 3a, 3b, 3c and 3d provided on the buckle 3 formed in a substantially rectangular shape. One side. Then, the insertion reference line 3L is preferably formed on the lower narrow side surface 3a provided on the floor side of the automobile because of the arrangement of the camera 4. Note that a step formed in the assembly portion of the upper cover and the lower cover of the buckle 3 may be used as the insertion reference line 3L.

  The camera 4 is a device that captures an image P in a situation where the tongue plate 2 is inserted into the buckle 3. In any of the embodiments of the present invention, the camera 4 is arranged so as to photograph at least the tongue plate 2 from the side of the insertion direction of the tongue plate 2 or from a substantially opposite direction. Therefore, the camera 4 according to the first embodiment is arranged so as to photograph the tongue plate 2 and the buckle 3 from a direction substantially opposite to the insertion direction of the tongue plate 2.

  Here, the camera 4 is preferably provided on one of the two narrow side surfaces 3 a or 3 b of the buckle 3, and further, as shown in FIG. More preferably, it is arranged behind the substantially opposing direction in the insertion direction. As the camera 4, it is preferable to use a small camera 4 having high image quality performance such as a CCD camera 4 or a CMOS camera 4.

  The image display unit 5 is a device that displays an image P taken by the camera 4. As the image display unit 5, an image display device such as a liquid crystal display device can be used. In addition, when a navigation device or a television device is provided in an automobile including the seat belt auxiliary device 1, the image display device can also be used as the image display unit 5.

  The control unit 6 is a device that controls the display of the image P on the image display unit 5. For example, FIG. 4 is an image diagram illustrating an example of an image when the camera 4 is mounted on the narrow side surface 3a of the buckle 3 illustrated in FIG. 2 and the shooting direction of the camera 4 is in a state of being aligned with the vertical direction of the vehicle. It is. In this example, the seat belt wearer H is shown on the right side of the buckle 3 and is displayed on the image display unit 5 without performing reversal processing or the like of the image taken by the camera 4.

  Here, the control unit 6 can perform control to convert the image P photographed by the camera 4 into a mirror image and display the mirror image on the image display unit 5 according to the arrangement state of the camera 4. For example, when the buckle 3 is viewed from the seatbelt wearer H, the seatbelt wearer H is located on the left side of the screen. Therefore, in order to match this arrangement, the camera image displayed on the image display unit 5 is a mirror image (left-right reversed image). It can also be. In this case, the left-right direction in a state where the seat belt wearer H looks down the buckle 3 is reversed from the left-right direction in the image P photographed by the camera 4 of the first embodiment. Thereby, the mirror image of the captured image P of the camera 4 coincides with the left-right direction in a state where the seat belt wearer H looks down on the buckle 3.

  In addition, the control unit 6 is preferably formed so as to perform control for displaying a virtual image for assisting insertion on the image display unit 5 together with the display of the actual image P taken by the camera 4. The virtual image in the first embodiment is an image in which the virtual guide 10 for guiding the operation of inserting the tongue plate 2 into the buckle 3 is virtually displayed between the tongue plate 2 and the buckle 3. As an example of the virtual guide 10, as shown in FIG. 4, a virtual guide line 10 a that virtually displays a suitable insertion direction with respect to the tongue plate 2 by a yellow or red dotted line, and the insertion before the insertion port 3 e of the buckle 3. Examples include a virtual guide frame 10b that virtually displays the mouth 3e with a yellow or red dotted frame, a virtual guide region 10c that virtually displays a position region preferable for the insertion operation of the tongue plate 2 with a colored region, and the like.

  Furthermore, as shown in FIG. 5, the control unit 6 is preferably configured to perform control to output the caution information 11 from the image display unit 5 when the tongue plate 2 is detached from the virtual guide 10. . The attention information 11 is information that prompts the tongue plate 2 to return to the virtual guide 10. For example, when the tongue plate 2 is displayed on the right side of the buckle 3, as shown in FIG. 5, a symbol such as a black arrow pointing to the left or “(the tongue plate 2 as viewed from the seat belt wearer H) outward. An example of this is a warning message such as “Please move.” Although not shown, an attention sound output from a speaker is an example of the attention information 11. Whether or not the tongue plate 2 is detached from the virtual guide 10 is determined by the control unit 6 performing image analysis based on the image P captured by the camera 4.

  Moreover, it is preferable that the control part 6 is formed so that the insertion auxiliary information 12 may be controlled to be output from the image display part 5 as shown in FIG. The insertion auxiliary information 12 is information for assisting the insertion of the tongue plate 2 into the buckle 3, and an information image such as an insertion distance and an insertion angle is an example. Although not shown, auxiliary sound may be used as the auxiliary insertion information 12. In this case, it is preferable to use an output device such as a speaker for the auxiliary insertion information 12 relating to sound. The auxiliary insertion information 12 for inserting the tongue plate 2 into the buckle 3 is created by the control unit 6 performing image analysis based on the image P photographed by the camera 4.

  Moreover, it is preferable that the control part 6 is formed so that the control which displays the image P which the camera 4 image | photographed on the image display part 5 based on a seating signal and a seatbelt non-wearing signal is performed. The seating signal is a signal notifying that the occupant (seat belt wearer H) is seated on the seat. For example, a load detection sensor embedded in the seat portion of the seat detects the weight of an occupant sitting on the seat, and the seating signal is transmitted to the control unit 6. Further, the seat belt non-wearing signal is a signal notifying that the tongue plate 2 is not inserted into the buckle 3. The seat belt non-wearing signal is transmitted to the control unit 6 by detecting whether or not the buckle 3 is inserted by an optical sensor such as a photo diode provided inside the buckle 3.

  Instead of the seating signal, a signal notifying that the webbing 8 to which the tongue plate 2 is attached has been pulled out by a specified amount may be used. Further, the control unit 6 is configured to perform control so that the image P captured by the camera 4 is not displayed on the image display unit 5 based on a signal notifying that the tongue plate 2 has been inserted into the buckle 3. preferable.

  In addition, although not shown, the control unit 6 receives the signals of images taken for the purpose of detecting danger in advance by the cameras other than the camera 4 attached to the vehicle and other safety-related image signals to the image display unit 5. It is preferable that the image relating to safety is displayed on the image display unit 5 and the image P captured by the camera 4 is controlled not to be displayed on the image display unit 5. For example, the camera 4 that captures images related to safety includes a back view camera, a side view camera, a front view camera, and the like that captures the periphery of the vehicle when the vehicle is moving backward.

  As shown in FIG. 2, the illumination unit 7 is preferably arranged so as to illuminate the shooting area of the camera 4 from the shooting direction of the camera 4. For example, in the first embodiment, the illumination unit 7 is placed on the camera 4 so that the irradiation area of the illumination unit 7 matches the imaging area of the camera 4. The illumination unit 7 is preferably a small light such as a night illumination light or an LED light provided as a flash light for a mobile phone with a camera 4.

(Operation according to the first embodiment)
In the seat belt auxiliary device 1 according to the first embodiment, as shown in FIG. 4, the camera 4 captures an image P in which the tongue plate 2 is inserted into the buckle 3 from a direction substantially opposite to the direction in which the tongue plate 2 is inserted. To do. Here, a part of the body such as the hand and arm of the seat belt wearer H having the tongue plate 2 and various front photographing obstacles such as the clothes of the seat belt wearer H are substantially opposed to each other in the insertion direction of the tongue plate 2. The camera 4 according to the first embodiment that shoots from the direction does not become an obstacle to shooting. Further, the camera 4 does not take an image from a low front position that the passenger does not want to see, such as the feet of the seat belt wearer H. That is, according to the seatbelt auxiliary device 1 of the first embodiment, the situation where the tongue plate 2 is inserted into the buckle 3 can be suitably photographed without any inconvenience.

  The buckle 3 of the first embodiment is provided with an insertion reference line 3L as shown in FIGS. Therefore, the recognizability of the insertion position and the insertion angle when inserting the tongue plate 2 into the buckle 3 can be improved.

  Moreover, the camera 4 of 1st Embodiment is provided in one of the two narrow side surfaces 3a or 3b provided in the buckle 3, as shown in FIG. Thereby, it is possible to prevent the angle of view of the camera 4 from changing due to the seat sliding back and forth or the buckle 3 moving.

  In addition, since the camera 4 of the first embodiment is disposed on the lower narrow side surface 3a of the buckle 3, the photographing is performed so that the tongue plate 2 is looked up from below. At this time, the left and right of the photographed image P are reversed from the left and right in a state where the seat belt wearer H looks down on the buckle 3 from above. Therefore, as shown in FIG. 7, the control unit 6 according to the first embodiment can perform control to display a mirror image based on the image P photographed by the camera 4 on the image display unit 5. As a result, the left and right sides of the image P displayed on the image display unit 5 coincide with the left and right sides when the seat belt wearer H looks down on the buckle 3 from above, so the image P displayed on the image display unit 5 was confirmed. It is possible to prevent the seat belt wearer H from being confused by looking at the image P.

  Further, as shown in FIG. 4, the control unit 6 according to the first embodiment performs control to display the image P in which the virtual guide 10 is superimposed on the actual image P captured by the camera 4 on the image display unit 5. Shaped to do. Thereby, the recognizability of the insertion position and the insertion angle can be improved.

  Further, as shown in FIG. 5, the control unit 6 of the first embodiment receives image and sound caution information 11 from the image display unit 5 and other output devices when the tongue plate 2 is detached from the virtual guide 10. It is configured to perform output control. Thereby, the seat belt wearer H can immediately confirm visually or audibly that the tongue plate 2 is displaced from the suitable insertion position.

  Moreover, the control part 6 of 1st Embodiment performs the control which outputs the insertion auxiliary | assistant information 12 of the tongue plate 2 from the image display part 5 other output devices using a sound and an image, as shown in FIG. It is formed as follows. Thereby, the seat belt wearer H can immediately confirm visually or auditorily how much distance, angle, etc., the tongue belt 2 can be inserted into the back plate.

  Moreover, in the seatbelt auxiliary device 1 of the first embodiment, as shown in FIG. 2, the illumination unit 7 that illuminates the shooting area of the camera 4 from the shooting direction of the camera 4 is provided. The camera 4 can take a picture of the insertion state of the tongue plate 2.

  Moreover, in the tongue plate 2 of 1st Embodiment, as shown in FIG. 3, the light-diffusion part 2b is formed in any one of the buckle opposing surface 2a, a periphery, or the whole surface. Therefore, the visibility of part of the buckle facing surface 2a of the tongue plate 2 is improved, so that the tongue plate 2 can be easily recognized on the screen of the image display unit 5. In particular, when the illuminating unit 7 is provided in the seatbelt auxiliary device 1 according to the first embodiment, the light radiated from the illuminating unit 7 is diffused by the light diffusing unit 2b, so that the operation is performed. Can be effectively generated.

  In addition, the control unit 6 according to the first embodiment displays the image P captured by the camera 4 on the image display unit 5 on the basis of the seating signal (or the predetermined amount extraction signal of the webbing 8) and the tongue plate 2 non-insertion signal. It is configured to perform display control. As a result, the image display unit 5 can display the image P photographed by the camera 4 when the seatbelt wearer H is not wearing the seatbelt. This keeps the image displayed on the display until the seated occupant wears the belt, which makes it difficult for the occupant to operate other screens (for flashing warning lamps, etc.). it can.

  In addition, the control unit 6 according to the first embodiment performs control so that the image display unit 5 does not display the image P captured by the camera 4 based on a signal notifying that the tongue plate 2 has been inserted into the buckle 3. Is formed. Thereby, after the tongue plate 2 is inserted, the image display by the image display unit 5 can be automatically terminated.

  The control unit 6 according to the first embodiment also displays an image P captured by the camera 4 when an image signal relating to safety such as a rear image from the back view camera is input to the image display unit 5. 5 is formed so as to perform control not to be displayed on the screen. Thereby, an image with a high priority can be displayed on the image display unit 5.

(Second embodiment of the present invention)
As shown in FIG. 8 or FIG. 9, the seatbelt auxiliary device 1 of the second embodiment has a tongue plate 2, a buckle 3, a camera 4, an image display unit 5, and a control unit, as in the first embodiment. 6 is provided. Moreover, this seatbelt auxiliary device 1 is further provided with the illumination part 7 as an arbitrary member similarly to 1st Embodiment. Here, the arrow A in FIG. 8 or FIG. 9 indicates the insertion direction of the tongue plate 2 with respect to the buckle 3. Further, the arrow B in FIG. 8 or FIG. 9 indicates the shooting direction of the camera 4.

  The difference from the first embodiment is that the arrangement of the camera 4 and the illumination unit 7 is different and that the insertion reference line 3L is not formed on the narrow side surface 3a or 3b of the buckle 3. Other points of the second embodiment are the same as those of the first embodiment. Whether or not the control unit 6 performs the mirror image processing is determined based on the captured image P.

  The camera 4 is a device that captures an image P in a situation where the tongue plate 2 is inserted into the buckle 3. Similarly to the first embodiment, the camera 4 according to the second embodiment is arranged so as to photograph the tongue plate 2 and the buckle 3 from a direction substantially opposite to the insertion direction of the tongue plate 2. However, the camera 4 is not disposed on one of the narrow side surfaces 3a or 3b of the buckle 3, but is provided inside the buckle 3 as shown in FIG. 8 or on the tongue facing surface 3h as shown in FIG.

  The illumination part 7 is arrange | positioned so that the imaging | photography direction of the camera 4 may be irradiated similarly to 1st Embodiment. Therefore, the irradiation part of 2nd Embodiment is provided in the inside of the buckle 3 as shown in FIG. 8, or the tongue opposing surface 3h as shown in FIG. 9 as the example.

  FIG. 10 is an image P photographed by the camera 4 of the second embodiment arranged inside the buckle 3. As in the first embodiment, the virtual guide 10 virtually displays the insertion port 3e of the buckle 3 with a dotted frame, etc., and the tongue plate 2 is returned to the virtual guide 10 by the upward arrow display or the inner (right) arrow display. The control unit 6 controls the output of the caution information 11 to be urged and the insertion auxiliary information 12 for assisting insertion such as the insertion distance and the insertion angle.

  Note that an image taken by the camera 4 arranged on the tongue facing surface 3h of the buckle 3 as shown in FIG. 9 is approximately the same as an image without a shadow portion drawn black on the left and right in FIG.

(Operation according to the second embodiment)
According to the seatbelt auxiliary device 1 of the second embodiment, various forward photographings such as a part of a body such as the hand and arm of the seatbelt wearer H having the tongue plate 2 and clothes of the seatbelt wearer H are provided. The obstacle does not become a shooting obstacle for the camera 4 according to the second embodiment that takes a picture from a direction substantially opposite to the insertion direction of the tongue plate 2. Further, the camera 4 does not take an image from a low front position that the passenger does not want to see, such as the feet of the seat belt wearer H. That is, according to the seatbelt auxiliary device 1 of the second embodiment, the situation where the tongue plate 2 is inserted into the buckle 3 can be suitably photographed without any inconvenience. Moreover, about the effect | action concerning a common point with 1st Embodiment, the same effect | action arises also in 2nd Embodiment.

(Third embodiment of the present invention)
As shown in FIGS. 11 and 12, the seatbelt auxiliary device 1 according to the third embodiment includes a tongue plate 2, a buckle 3, a camera 4, an image display unit 5, and a control unit, as in the first embodiment. 6 is provided. Moreover, this seatbelt auxiliary device 1 is further provided with the illumination part 7 incorporated in the camera 4 as arbitrary members similarly to 1st Embodiment. Here, an arrow A in FIG. 12 indicates an insertion direction of the tongue plate 2 with respect to the buckle 3. An arrow B in FIG. 12 indicates the shooting direction of the camera 4.

  The difference from the first embodiment is that the arrangement of the camera 4 and the illumination unit 7 is different. Other points of the second embodiment are the same as those of the first embodiment. Whether or not the control unit 6 performs the mirror image processing is determined based on the captured image P.

  As shown in FIGS. 11 and 12, the camera 4 and the illumination unit 7 are provided on the lower surface 9a of the armrest 9 provided on the seat, and look down from the side of the tongue plate 2 in the insertion direction. It is formed to take a picture. Although not shown, the camera 4 and the illumination unit 7 are provided on the buckle adjoining part related to the seat part or on the floor of the automobile so as to take a picture so as to look up from the side in the insertion direction of the tongue plate 2. It may be formed.

  FIG. 13 is an image P taken by the camera 4 of the third embodiment disposed on the lower surface 9 a of the armrest 9. Similar to the first embodiment, the virtual guide 10 that virtually displays the insertion port 3e of the buckle 3 with a dotted frame or the like, and the caution information 11 that prompts the tongue plate 2 to return to the virtual guide 10 by the outer (left) arrow display Insertion auxiliary information 12 for assisting insertion such as an insertion distance and an insertion angle is output controlled by the control unit 6.

  Although not shown in the figure, an image P captured by the camera 4 from the buckle adjacent portion of the seat or the side of the tongue plate 2 in the insertion direction from the floor (below) should be displayed after being subjected to mirror image processing by the control unit 6. Can do.

(Operation according to the third embodiment)
According to the seatbelt auxiliary device 1 of the third embodiment, various forward photographing such as a part of the body such as the hand and arm of the seatbelt wearer H having the tongue plate 2 and clothes of the seatbelt wearer H The obstacle does not become a shooting obstacle for the camera 4 of the third embodiment that takes a picture from the side of the insertion direction of the tongue plate 2. Further, the camera 4 does not take an image from a low front position that the passenger does not want to see, such as the feet of the seat belt wearer H. That is, according to the seatbelt auxiliary device 1 of the third embodiment, the situation where the tongue plate 2 is inserted into the buckle 3 can be suitably photographed without any inconvenience. Moreover, about the effect | action concerning a common point with 1st Embodiment, the same effect | action arises also in 3rd Embodiment.

(Effect of Embodiment of the Present Invention)
According to the above-described embodiment of the present invention, the camera shoots the insertion state of the tongue plate from the side of the tongue plate insertion direction or from the substantially opposite direction, so it is compared with the conventional example of photographing from the front of the seat belt wearer. As a result, various effects such as being able to properly photograph the insertion state of the tongue plate even when a front photographing obstacle exists are produced. For this reason, the seatbelt auxiliary device which can insert a tongue plate in a buckle easily can be provided.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the captured image of the camera 4 displayed on the image display unit 5 can be displayed not only as a mirror image (left-right reversed image) but also as a vertically inverted image. These reverse display can be set so that the user can reverse in advance according to the state that the user feels easy to operate.

  In another embodiment, the arrangement of the cameras can be freely changed by changing the shooting direction of the camera using mirror reflection.

  The seat belt auxiliary device of the present invention is not limited to the driver's seat, but can be applied to a passenger seat and a rear seat (including an n-th row seat (n: any integer greater than or equal to 2)). In that case, it is preferable that the image concerning each sheet displayed on the image display unit is divided and displayed on the image display unit by the number of sheets arranged in parallel. For example, if there are three rear seats and there is only one screen display unit, the image displayed on the image display unit is divided into three parts and each photographed by a camera provided at each of the three rear seats The image thus displayed is displayed in each divided area of the image display unit.

  In the lateral three-row seating seat such as the rear seat, the buckle tongue of the central seat is formed so as not to be erroneously coupled to the left and right seats. The output signal based on the light diffusing unit 2b according to the present embodiment can be used for the erroneous coupling prevention process. For example, the above-described miscoupling prevention process can be performed by changing the output signal by dividing the center seat into three and leaving the left and right seats without division. In the case of the buckle at the central seat, the buckle on the side farther from the central seat surface is generally used for the central seat and is easily mistaken. In this case, the center seat occupant can confirm that the tongue is approaching the buckle of the center seat by visually observing the center image display portion of the image display section divided into three. When the tongue is brought close to the left and right seat buckles, there is an effect that the approaching state is displayed on the display unit for the left and right seats and is noticed.

  By analyzing the image of the tongue marker reflected in the buckle image of the center seat, it is possible to convey that it is an error when the tongue for the left and right seats approaches. This transmission method displays, for example, that the belt is not a regular belt on the display unit. Alternatively, sound / voice guidance may be used. In the same way as described above, when the right-seat occupant tries to insert the right-side seat into the buckle of the central seat, even if the central occupant is not seated, the central buckle display can be displayed and an error can be transmitted.

DESCRIPTION OF SYMBOLS 1 ... Seat belt auxiliary device, 2 ... Tung plate, 2a ... Buckle opposing surface, 2b ... Light diffusion part, 3 ... Buckle, 3a ... Lower narrow side surface, 3b ... (Upper) Narrow side surface, 3c, 3d ... Side surfaces other than narrow side surface, 3e ... Insert port, 3L ... Insertion reference line, 4 ... Camera, 5 ... Image display unit, 6 ... -Control part, 7 ... Illumination part, 8 ... Webbing, 9 ... Armrest, 9a ... Lower surface of (armrest), 10 ... Virtual guide, 10a ... Virtual guide line, 10b ... Virtual guide frame, 10c ... Virtual guide area, 11 ... Caution information, 12 ... Insertion auxiliary information, A ... Insertion direction of tongue plate, B ... Shooting direction of camera, H ... seat belt wearer, P ... image

Claims (1)

A tongue plate, a buckle coupled to the tongue plate, a camera for photographing an image in which the tongue plate is inserted into the buckle from a side or substantially opposite direction of the tongue plate insertion direction, and a photograph taken by the camera An image display unit for displaying an image ,
A seat belt auxiliary device according to claim 1, wherein the camera is provided on the buckle .