KR102270886B1 - Wearable camera and neck guide therefor - Google Patents

Abstract

The present invention is to provide a wearable camera that can be worn on the neck and can acquire 360-degree omnidirectional images by installing three camera modules in a 'U'-shaped case at regular angular intervals, 3 The optical axes of the four cameras are located on the same plane, and the angle between the optical axes of the rear camera and the front camera is larger than the angle between the optical axes of the front cameras. do.

Description

WEARABLE CAMERA AND NECK GUIDE THEREFOR

The present invention relates to a wearable camera, and relates to a wearable camera that can be worn on the body and is equipped with three cameras to take 360-degree omnidirectional images, and a neck guide thereof.

A wearable camera is a camera device that is mounted on a body part such as a person's neck or head to photograph a user's surroundings, and has the advantage that the user does not need to carry it with his/her hands and can use both hands freely. Recently, a 360-degree wearable camera capable of capturing an omnidirectional view around the wearer in real time has been highlighted for safety, firefighting, security, and leisure purposes.

In general, a conventional wearable camera is formed in a form in which a small camera module is installed on an earset or neckband type body worn on the ear. In particular, in the 360-degree omnidirectional wearable camera, multiple cameras were placed at the same angular distance from each other on the frame of the neckband or earset. That is, in the case of four cameras, they are arranged at intervals of 90 degrees, and image data of the slopes is collected and image stitched. A plurality of camera modules are arranged at the same angular interval in this manner even in a wearable camera in the form of a neckband hung around the neck. However, this method does not take into account the human body condition to be worn, and it is necessary to obtain a high-quality 360-degree image without blind spots while maintaining the relative position and angle between the cameras while considering the angle of the bent shoulder.

On the other hand, when the wearable camera is worn on the neck, since the thickness or shape of the wearer's neck varies from person to person, the wearable camera is not properly fixed to the body. . In particular, in the case of a 360-degree wearable camera, a rigid case is employed to mount or support the cameras in order to maintain the relative position and angle between the cameras. In this case, it is difficult to fix the case and the body in close contact, and it is difficult to properly respond to different body types for each person even if the design is tailored to the standard body shape. Therefore, there is a need for a support that can be worn according to the user's physical condition and can be stably fixed to the body at the same time.

[Patent Literature] Korean Patent No. 10-1254468

The present invention is to solve the above problems, a wearable camera that is provided with a U-shaped case that can be worn on the neck and three camera modules are installed to be spaced apart from each other in the case to obtain a 360-degree omnidirectional image. Its purpose is to provide

In addition, it is intended to provide a 360-degree omnidirectional wearable camera that can easily stitch images and minimize blind spots.

Another object of the present invention is to provide a 360-degree wearable camera with excellent image quality that can be stably fixed to fit the body while maintaining a constant position and position between camera modules.

Another object of the present invention is to provide a neck guide for a wearable camera that is selectable to fit a user's body and has excellent fixability while being easy to attach and detach.

In order to achieve the above object, the wearable camera of the present invention includes: a U-shaped case having a rear portion and side portions protruding forward from both ends of the rear portion, respectively, and having a mounting space therein; three cameras respectively mounted in front of the rear part and the side part; and a control module for generating a 360-degree image by combining the images captured by the camera into one by image stitching.

It is preferable that the optical axes of the three cameras are on the same plane, and the three cameras are fixedly mounted in the case to maintain relative positions and optical axes.

The three cameras include a rear camera disposed on the rear part of the case, and a front right camera and a front left camera disposed on both front sides of the side part. The case is made of a rigid material,

The extension lines of the optical axes of the rear camera, the front right camera and the front left camera meet at a point, and the angle of the second central angle between the optical axes of the rear camera and the front right camera is the second angle formed by the optical axes of the rear camera and the front left camera. 3 It may be the same as the angle of the central angle.

Preferably, the angle of the first central angle formed by the optical axes of the front right camera and the front left camera is different from the second central angle and the third central angle.

A plane including the optical axis has a constant angle with respect to a horizontal plane formed by the bottom surface of the case.

According to a preferred embodiment of the present invention, the first central angle is 85° to 88°, and the second central angle and the third central angle are 136° to 137.5°, respectively.

The wearable camera according to another embodiment of the present invention includes a neck guide that is detachably fixed to the case, and the neck guide is preferably provided in a plurality of pairs of different sizes to be detachable according to the body size of the user. .

The neck guide is composed of two symmetrical neck guides of the right and left sides, and is fixed to the inside of the side of the U-shaped case to form a loop with an open front together with the inside of the rear of the case, and is in contact with the user's neck and the case is fixedly supported on the user's neck.

The neck guide is made of an elastic material, and includes an arc-shaped support part for contacting a user's body, and an attachment part formed at one end of the support part and detachably coupled to the case.

It is preferable that a mounting portion for fixing the neck guide is formed to protrude inside the side of the U-shaped case.

The mounting portion is formed to protrude from the inner side of the case toward the central portion, and the attachment portion and the mounting portion are fittedly coupled by hook coupling. It is preferable that a hook protrusion for coupling the hook is formed on the attachment part and a hook stop protrusion for coupling the hook is formed on the mounting part.

The attachment part includes a U-shaped ring-shaped attachment member protruding from the support part, and a cantilever-shaped hook coupling part positioned between the U-shaped protrusion part of the attachment member and extending from the support part.

One end of the two protrusions parallel to each other is respectively connected to the support portion, and the other ends of the two protrusions are connected to each other to constitute the U-shaped ring-shaped attachment member.

A rail groove is formed to extend along the inner circumferential surface of the U-shaped ring-shaped attachment member, one end of the rail groove side is opened, and the outer circumferential surface of the rim of the protruding surface of the mounting part is inserted into the frame groove to guide the fitting to fit. The rail is formed to protrude.

According to an embodiment of the present invention, there is provided a neck guide made of an elastic material that is detachably coupled to the wearable camera. The neck guide is detachably fixed to the inner circumferential surface of the wearable camera case to form a circular loop with an open front together with the inside of the rear part of the case, and the loop is in contact with the user's neck to fix the case to the user's neck support

The neck guide is made of an elastic material, and includes an arc-shaped support part for contacting a user's body, and an attachment part formed at one end of the support part and detachably coupled to the case.

Preferably, the attachment part is fixedly coupled to the mounting part protruding from the inner circumferential surface of the case by hook coupling, and a hook protrusion for hook coupling with the hook stop protrusion formed in the mounting part is formed in the attachment part.

As described above, the 360-degree wearable camera of the present invention can minimize an unnecessary photographing area in consideration of a body structure and improve stitching quality and photographing efficiency of an image.

According to one aspect of the present invention, since the neck guide in close contact with the neck is provided for each size, it can be applied to various body sizes, and is in close contact with the neck without applying deformation to the case when worn, so that the case does not easily fall out or shake. This has the effect of improving image quality and product durability.

The wearable camera according to one aspect of the present invention is excellent in image quality, reliability and ease of use because it is easy to attach and detach the neck guide and has excellent fixing force after assembly.

The neck guide according to an embodiment of the present invention is easy to attach to and detach from the wearable camera, but is not separated by up, down, left, and right external forces, and thus has excellent assembly and bonding quality.

1 is a view showing an upper surface and a side surface of a wearable camera according to an embodiment of the present invention.
2 is a perspective view of a wearable camera and a side view of a neck guide according to an embodiment of the present invention.
FIG. 3 is a perspective view of the neck guide in a direction in which it is coupled to the wearable camera case according to an embodiment of the present invention.
Figure 4 is an enlarged perspective view showing the detachable part of the neck guide in the embodiment of the present invention.
5 is a perspective view showing the mounting portion of the case and the detachable portion of the neck guide in a state before detachment according to an embodiment of the present invention.
6 is a plan view showing a direction in which the neck guide is attached to the camera case according to an embodiment of the present invention from the top.
7 is a cross-sectional view illustrating a cross section before (a) and after (b) a neck guide of a wearable camera according to an embodiment of the present invention is fixedly mounted to a case attachment part.
8 is a diagram schematically illustrating the relative positions of images captured by three cameras of the wearable camera according to an embodiment of the present invention.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term to describe the user's invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 , the wearable camera according to an embodiment of the present invention includes a U-shaped case 100 , three cameras 201 , 202 , 203 , and a control module (not shown). In addition, it may include a battery module or an external power supply cable for power supply, and it is preferable to further include a communication module.

The case 100 is formed in a U-shape including a rear portion positioned on the user's back neck when worn on the user's neck, and side portions bent forward from both ends of the rear portion to protrude, and a mounting space therein have Three cameras 201 , 202 , 203 and a control module are fixed or mounted in the case 100 .

The control module (not shown) combines the images captured by three cameras into one by image stitching to generate a 360-degree image, and for this purpose, circuits and electronic components for camera control and image data generation are installed on a PCB or system on a SoC (SoC). chip) is implemented.

The three cameras include a rear camera 201 disposed in the rear portion of the U-shaped case 100 , and a front right camera 202 and a front left camera 203 disposed in front of both sides of the side portion. The case is made of a rigid material, and the three cameras are fixed in the case so that their relative positions and optical axes are maintained. Furthermore, by minimizing the shake of the optical axis of the three cameras, it is possible to prevent camera focus shake and maintain image quality.

The optical axes of the rear camera 201, the front right camera 202 and the front left camera 203 are preferably on the same plane. Acquiring a coplanar image in order to acquire a desired 360-degree omnidirectional image centering on the user's position and the camera mounting position is good in terms of the efficiency or effect of stitching. For image stitching, the relative position between the cameras and the relative arrangement of the optical axis must be kept constant so that smooth image stitching is performed according to the same standard, and image data processing time and image quality can be secured.

Meanwhile, the positions and mounting directions of the three cameras are designed so that the extension lines of the optical axes of the rear camera 201 , the front right camera 202 , and the front left camera 203 meet at one point. Here, the optical axis is a reference axis of the optical system constituting each camera, and may be, for example, a central axis of the optical system, and is indicated by a dotted line in the perspective view of FIG. 1 . The second central angle β formed between the optical axes of the rear camera 201 and the front right camera 202 is the same as the third central angle γ formed between the optical axes of the rear camera 201 and the front left camera 203 . and a first central angle α formed by the optical axes of the front right camera 202 and the front left camera 203 is different from the second central angle and the third central angle.

When the wearable camera of the U-shaped case is worn on the neck, the rear camera 201 is located on the user's back neck, and the front cameras 202 and 203 are relatively directed to a lower position on the ground than the rear camera. This is due to the shape of the U-shaped case and the three-dimensional shape of the neck and shoulder of the human body. Even if the optical axes of the 3 cameras are located on the same plane, the plane is slightly inclined with respect to the horizontal plane in the worn state. That is, the optical axes of the front cameras 202 and 203 are directed at a position slightly lower than that of the rear camera 201 to capture surrounding images.

As a result, a captured image such as can be confirmed in FIG. 8 is obtained. The middle part of FIG. 8 is an image photographed by the rear camera 201, and the left and right rectangles are images photographed by the front cameras 202 and 203, and the relative positions thereof are schematically indicated. That is, the shaded portion of 8 is an image of approximately the same height and is subjected to image stitching.

However, when the angle between the three cameras is the same or similar to 120 degrees, the front left and right cameras take a part of the wearer's body, that is, the lower part of the part indicated by the curve in FIG. The portion is an area with little or no information in the photographed image of the wearable camera. That is, an unnecessary image, which is a part of the front of the wearer's shoulder, is taken, and the portion occupied by the 360-degree image with information is reduced.

The inventors of the present invention consider the three-dimensional body structure of the user wearing the wearable camera, the first central angle (α) formed by the optical axes of the front right camera 202 and the front left camera 203 is the second central angle (β) and a structure smaller than the third central angle (γ) was developed. According to a preferred embodiment of the present invention, the optical axes of the three cameras are located on the same plane, the extension lines of the three optical axes meet at a point, the first central angle is 80° to 90°, the second central angle and the third central angle are 135° to 140° respectively. More preferably, the first central angle is 85° to 88°, preferably 86.21°, and the second central angle and the third central angle are each 136.895°. Each of the three cameras preferably has an angle of view of 187 degrees or less.

According to the preferred configuration of the present invention as described above, as shown in FIG. 8(b), the angle of the photographing angle is directed toward the user's shoulder, not the external environment, as shown in FIG. 8(b). portion) is minimized, so it is possible to obtain an image with excellent informational properties and easy stitching.

On the other hand, according to the case side view of FIG. 1, when the wearable camera is mounted on the neck, the plane including the optical axis with respect to the horizontal plane connecting the rear bottom surface of the case 100 and the central axis of the front camera in consideration of the user's body structure is It is preferable to have an inclination of a constant angle, preferably θ = 2.23°. This is a structure that minimizes the difference in imaging angles between the rear camera and the front camera while considering the body structure in which the back neck is higher than the front of the shoulder.

According to another embodiment of the present invention, the wearable camera preferably includes a neck guide 500 that is detachably fixed to the case. The case is preferably made of a rigid material in order to maintain a constant relative position and optical axis between the cameras. In this case, it is difficult to closely fix the case to the body, particularly the neck. Therefore, when the wearable camera is worn, it is easy to shake the case or fall off the neck, so that the focus is shaken during imaging, and the image quality is deteriorated. Furthermore, the product may be dropped and damaged by falling to the floor.

Accordingly, the wearable camera can be stably worn by providing the neck guide 500 made of an elastic material mounted on the case and fixing the neck guide to the body, particularly the neck.

According to an embodiment of the present invention, the neck guide is preferably provided in a plurality of sizes according to the body size of the user. For example, since a detachable neck guide of three sizes is provided, the user can select a neck guide that fits the body size and attach it to the case.

Hereinafter, the configuration of the neck guide and the coupling structure and method with the case will be described in more detail with reference to FIGS. 2 to 7 .

2 is a perspective view of a wearable camera coupled with a neck guide according to an embodiment of the present invention, and a side view of the neck guide.

Referring to FIG. 2 , two pairs of symmetrical neck guides on the right and left are provided for one wearable camera, and the neck guide 500 is fixed inside the side of the U-shaped case. The neck guide consists of two, one end is fixed to the inner circumferential surface of the side of the case 100, and the other end protrudes in a curved shape curved in a direction facing each other and is placed in a free state. The neck guide 500 has an elastic force, and is in close contact with the neck by the elastic force when the case 100 is mounted on the neck.

Since the neck guide 500 that is in close contact with the neck is provided on the inner peripheral surface of the side of the case 100, it is in close contact with the neck without applying deformation to the case 100 when worn to stably attach the case 100 to the body. can be fixed, which improves safety and image quality. The left and right neck guides are coupled to the inside of the side of the case of the wearable camera to form a circular loop with an open front together with the inside of the rear of the case, and the circular loop is in contact with the user's neck to fix the case to the user's neck will support

For convenience, the mounting part and the neck guide of the wearable camera will be described based on the right neck guide 500 from the point of view of the wearer. Since the left neck guide has the same configuration and is symmetrical to the right neck guide, those skilled in the art will be able to easily understand it without a separate explanation.

The neck guide 500 is made of an elastic material such as PC (poly carbonate), an arc-shaped support 510 for contacting the user's body, and an attachment that is formed at one end of the support and is detachably fixed to the case. part 520 . The neck guide 500 including the support part 510 and the attachment part 520 is preferably formed integrally, but is not limited thereto.

As shown in FIGS. 2 and 3 , the support part 510 has an arc shape, and a cutout 512 of the same arc shape may be elongated along the arc in order to add elasticity and flexibility.

3 is a perspective view of the neck guide 500 coupled to the case 100 from the lateral direction, and FIG. 4 is a partial perspective view of the neck guide showing the attachment part 520 viewed from the support part 510 direction. Referring to FIGS. 3 and 4 , the attachment part 520 includes a hook coupling part 540 and an attachment member 530 surrounding the hook coupling part 540 to be spaced apart, and there is an attachment part on the inner peripheral surface of the side of the case 100 . A mounting portion 400 for coupling with the 520 is formed to protrude. The attachment part 520 and the mounting part 400 are hook-coupled, and the attachment member 530 forming the outer periphery of the attachment part 520 is coupled while surrounding the mounting part 400 of the case when the hook is coupled. The configuration of the attaching part and the mounting part will be described in detail below.

4 and 5, the attachment member 530 is extended from one end of the support part 510 and is formed in a U-shaped long ring shape having a through hole in the center, and the ring shape is extended from the support part 510 while At the same time, it is formed to protrude upward (see FIGS. 4 and 5). That is, one end of the attachment member 530 is formed to protrude in the vertical direction from the support portion 510 from both sides with the hook coupling portion 540 interposed therebetween, and the protruding extensions on both sides meet at the other end to form an integrated ring. will form At this time, the meeting part becomes a U-shaped connection part, and both ends are connected to the support part 510 .

The hook coupling part 540 extends from one end of the support part 510 along a space forming the through hole of the attachment member 530 so as to be parallel to the attachment member 530 . The hook coupling part 540 has a cantilever shape having one fixed end fixed to the support part 510 and the other end being a free end, and is preferably formed integrally with the support part 510 and the attachment member 530, but limited to this. it doesn't happen

A hook protrusion 543 is formed between the free end region 541 of the hook coupling part 540 and the fixed end region 542 connected to the support part, and the hook protrusion 543 is aligned with the upper protrusion direction of the attachment member. It protrudes in the same direction, and has a hook coupling surface 544 protruding steeply or vertically from the free end region 541, and has a relatively gentle slope or curved surface toward the fixed end (see FIG. 7).

The hook coupling part 540 is surrounded by the attachment member 530 to be spaced apart as a whole, but the fixed end side is adjacently connected to the attachment member by the support part 510 .

On the other hand, in the case, the mounting portion 400 is protruded so as to be fitted with the through hole, and the protruding surface 442 corresponding to the attachment portion 510 of the mounting portion 400 is formed with the longitudinal contour of the through hole and long to match. In one area of the protruding surface 442 of the mounting part 400, a hook stop protrusion 443 that is hook-coupled to the hook protrusion 543 is formed to protrude. The front side of the hook stop protrusion 443 forms a vertical or steep slope 444 and the rear side forms a gentle slope or curved surface (see FIGS. 5 and 7 ).

The configuration of the attachment member 530 will be described in detail with reference to FIGS. 3 to 5 . 3 and 4, the attachment member 530 has a U-shaped ring-shaped structure extending from one end of the support part 510, and a long through hole is formed in the ring, and the support part 510 is formed in the through hole. A hook coupling part 540 in the form of a cantilever fixed to the cantilever is formed to be long. That is, the hook coupling part 540 is disposed in the through hole of the U-shaped annular attachment member 530 to enable vertical movement of the free end around the fixed end.

Referring to FIG. 4 , a long rail groove 532 is formed along the U-shaped inner circumferential surface of the annular attachment member 530 . The rail groove 532 is formed to be long along the inner peripheral surfaces of both long sides of the attachment member 530 , and is formed to be open at one end of the attachment member 530 protruding upward with respect to the support part 510 and to the opposite end of the other end. extended to bend. The opened end of the rail groove 532 is a portion into which the guide rail 432 of the rim portion of the mounting portion of the case is inserted when the neck guide is mounted on the case.

On the other hand, the mounting portion 400 of the case 100 of FIG. 4 has a pillar 448 protruding from the inner circumferential surface of the case, and a guide rail 432 protruding from the periphery of the protruding surface 442 to the outer circumferential side. The guide rail 432 is designed in shape and thickness so that it can be slide-coupled and fitted along the rail groove 532 .

The combination of the attachment part and the mounting part will be described with reference to FIGS. 5 to 7 .

First, as shown in FIG. 5, in a state in which the hook protrusion 543 of the attachment part 520 is disposed to face the mounting part 400, the attachment part 520 is positioned slightly rearward than the mounting part 400, While sliding the attachment part 520 of the neck guide 500 on the mounting part 400 of the case in the arrow direction shown in FIG. 6 , the attachment part 520 and the mounting part 400 of the neck guide 500 are hook-coupled.

7 is a lateral view so that the relative positions and structures of the hooks stop protrusion 443 and the hook protrusion 543 can be seen before (a) and after (b) the coupling of the mounting part 400 and the attachment part 520 of the case. It is a cut drawing.

5, 7 (a) and 6, the guide rails 432 on both sides of the rim of the mounting part as both openings of the rail groove 532 of the neck guide 500 rearward (the rear camera of the case is arranged) direction), and the relative slide movement, the protruding mounting portion 400 is engaged with the through hole in the U-shape of the attachment member 530 and is coupled. At the same time, the protruding surface 442 slides relative to the hook coupling portion 540, and first, the gentle slope of the hook projection 543 and the gentle slope of the hook stop projection 443 meet and slide with each other. The steeply inclined surface 544 of the hook protrusion 543 and the steeply inclined surface 444 of the hook stop protrusion 443 are in contact with each other, so that the hook coupling is made. At this time, the protruding mounting part 400 is fitted into the inner through hole of the attachment member 530 , and the rear end of the mounting part 400 abuts against the rear inner circumferential surface of the attachment member 530 , and the hook protrusion 543 . ) and the hook coupling of the hook stop protrusion 443, the front and rear fixing of the mounting part is made.

At the same time, the guide rail 432 of the rim of the mounting part is inserted into the rail groove 532 of the neck guide 500. At this time, the rail groove 532 is formed to be bent along the inner circumferential surface of the U-shaped attachment member, so that the hook coupling and The combination of the rail groove and the rail guide makes it difficult to separate against external forces of front, back, left, right, and up and down.

Figure 7 (b) is a view showing a cross-sectional view of the mounting portion and the hook coupling portion in a state in which the hook coupling is made.

In order to release this coupling, as shown in (b) of FIG. 7 , a release groove formed between the inner periphery of the rear side of the attachment member, which is a part of the through hole of the attachment member 530 and the free end end of the hook coupling part, is formed. When a fingernail or fingertip is put in 560 and the free end side region 541 of the hook coupling part is pulled in the release direction indicated by an arrow, that is, the free end end of the hook coupling part is easily released.

As such, the elastic neck guide 500 of the present invention is provided for each size so that it is easy to attach to and detach from the case, and is stably fixed to the case of the wearable camera because it is not easily removed by an external force when mounted. Since the neck guide that fits the user's body is easily and securely coupled to the case, and the contact bonding force to the body is excellent by the neck guide, it is possible to provide a wearable camera with excellent body adaptability, ease of use and image quality through a simple configuration.

The neck guide is formed by CNC machining a part of the rail groove and the neck guide hook in order to improve the precision of CNC machining dimensions after injection molding the PC.

On the other hand, the case 100 contains 40% of GF as a composition of PBT and GF, and two upper and lower cases are integrally formed and coupled.

Although not shown in the drawings, a microphone and a speaker module for recording an external sound may be installed inside the case 100, respectively, and Wi-Fi for transmitting the image captured by the camera to an external storage device , a wireless communication module such as LTE may be installed.

The present invention is not limited thereto, and various modifications may be made by those skilled in the art without departing from the spirit and scope of the appended claims, and thus such modifications should be construed as being within the scope of the present invention. something to do.

100: frame 201: rear camera
202: right camera 203: left camera
400: neck guide coupling portion 432: guide protrusion
442: protrusion surface 443: hook stop projection
444: inclined surface of the hook stop projection
448: guide rail 500: neck guide
510: support 512: cutout
520: attachment member 530: attachment member
532: rail groove 540: hook coupling part

Claims (10)

a case comprising a rear portion and side portions protruding forward from both ends of the rear portion, respectively, and having a mounting space therein;
three cameras including a rear camera mounted on the rear portion and a front right camera and a front left camera respectively mounted on both front sides of the side portion; and
A wearable camera for wearing on a user's neck and including a; a control module for generating a 360-degree image by combining the images taken by the three cameras into one by image stitching,
The three cameras are fixedly mounted on the case made of a rigid material to maintain relative positions and optical axes,
The optical axes of the three cameras are on the same plane, and the extension lines of the optical axes meet at a point.
The second central angle formed by the optical axes of the rear camera and the front right camera is the same as the third central angle formed by the optical axes of the rear camera and the front left camera, and the first central angle formed by the optical axes of the front right camera and the front left camera is The wearable camera, characterized in that smaller than the second central angle and the third central angle. According to claim 1,
When the wearable camera is worn on the neck, the rear camera is located on the user's back neck, and the front right camera and the front left camera are relatively facing a lower position than the rear camera. 3. The method of claim 1 or 2,
A wearable camera, characterized in that the first central angle is 80° to 90°, and the second central angle and the third central angle are 135° to 140°. 4. The method of claim 3,
A wearable camera, characterized in that the plane including the optical axis has a constant angle with respect to a horizontal plane including the rear bottom surface of the case and the center of the front left and right cameras. According to claim 1,
and a neck guide that is detachably fixed to the case,
The neck guide is a wearable camera, characterized in that a plurality of pairs of different sizes are provided so as to be detachable according to a user's body size. 6. The method of claim 5,
The neck guide is composed of two symmetrical neck guides on the right and left, and is fixed to the inside of the side of the U-shaped case to form a loop with an open front together with the inside of the rear of the case, and is in contact with the user's neck A wearable camera, characterized in that the case is fixed to the user's neck. 7. The method according to claim 5 or 6,
The neck guide is made of an elastic material, and includes an arc-shaped support part for contacting the user's body, and an attachment part formed at one end of the support part and detachably coupled to the case,
A mounting portion for fittingly coupled to the attachment portion by hook coupling is formed to protrude from the inner side of the case toward the central portion,
The attachment part includes a hook coupling part and an attachment member surrounding the hook coupling part to be spaced apart,
For the hook coupling, a hook projection is formed on the hook coupling portion and a hook stop projection is formed on the mounting portion, and the attachment member surrounds the mounting portion when the hook is coupled. 8. The method of claim 7,
A rail groove is formed to extend along the inner circumferential surface of the attachment member, and a guide rail is formed to protrude from the outer circumferential surface of the rim of the protruding surface of the mounting part so as to slide along the rail groove to fit-fit. a case comprising a rear portion and side portions protruding forward from both ends of the rear portion, respectively; and
and a neck guide detachably fixed to the case;
The neck guide is made of an elastic material, and includes an arc-shaped support part for contacting the user's body and an attachment part formed at one end of the support part to be detachably coupled to the case,
The attachment part includes a cantilever-shaped hook coupling part extending from the support part, and a ring-shaped attachment member protruding from the support part and enclosing the hook coupling part to be spaced apart,
A mounting portion for coupling the attachment portion and the hook is formed to protrude from the inner circumferential surface of the side of the case, and the attachment member forming the outer periphery of the attachment portion is coupled while surrounding the mounting portion when the hook is coupled,
A rail groove is formed to extend along the inner peripheral surface of the attachment member, one end of the support part side of the rail groove is opened, and a guide rail protrudes so as to be slide-coupled along the rail groove to fit-fit the outer peripheral surface of the rim of the protruding surface of the mounting part. Formed, wearable camera. 10. The method of claim 9,
The neck guide is detachably fixed to the inner circumferential surface of the wearable camera case to form a circular loop with an open front along with the inner side of the rear part of the case,
The loop is in contact with the user's neck to fix and support the case on the user's neck,
A hook projection is formed between the free end region of the hook coupling portion and the fixed end region connected to the support, the hook projection has a hook engagement surface that protrudes steeply or vertically from the free end region, and is relatively gentle toward the fixed end. A wearable camera, characterized in that it has one inclined surface or a curved surface, and a hook stop protrusion that is coupled to the hook protrusion and the hook protrusion is formed in one area of the protruding surface of the mounting part.

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