Image display device

Abstract

To provide an image display device that reduces the load on the head of a user when worn on the head, and facilitates operations for image observation, for example, allows selection of a highly convenient holding form when used alternately by a plurality of users.SOLUTION: An image display device 100 comprises: display means 300 that displays an image to a user; and support means 200 that can be held by the user and is removably coupled to the display means 300 to support the display means 300. The support means 200 accommodates a driving circuit of the display means 300, and allows the user to select a first usage form where it is mechanically coupled to the display means 300, and a second usage form where it is electrically connected to the display means in a non-coupled state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an image display device. [Background technology]

[0002] In recent years, head mounted displays (HMDs) that are worn on the user's head and display images in front of the user's eyes have been used as image display devices. HMDs can present images of virtual objects to a moving user. HMDs have been used in various fields in recent years.

[0003] When an HMD is used in a head-mounted form with a display means fixed to the head, it is comfortable in that both hands are free to use, but depending on the user, the load on the head may reduce comfort during use. Patent Document 1 discloses a configuration that allows switching between a form in which the display means is mounted on the head and a form in which the display means is held by the hand.

[0004] On the other hand, as a measure to improve comfort when used in a head-mounted form, there is a mounting method that reduces the weight of the head-mounted device itself and reduces the load on the head. Patent Document 2 discloses a configuration in which part of the functions of the head-mounted device are held by the user's body by disposing them around the neck and shoulders of the user, thereby reducing the load on the user's head. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6529288 [Patent Document 2] Utility Model Registration No. 3219789 Summary of the Invention [Problem to be solved by the invention]

[0006] The conventional technology disclosed in Patent Document 1 does not solve the problem that the weight of the entire device is placed on the head when used in a head-mounted form. It is possible to reduce the weight of the entire device by connecting a cable to an information device such as a PC or a power source, but in that case, the cable may get caught on the user's body during use, reducing comfort. In the conventional technology disclosed in Patent Document 2, the user has to wear and remove the device, which makes the task of changing the device complicated when multiple users take turns using one HMD.

[0007] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide an image display device that enables comfortable image observation with reduced strain on the head by selecting a usage form for the user, for example, to be worn on the head, and that facilitates the work of observing images by selecting a usage form for the user to hold, making it highly convenient, for example, when multiple users take turns using the device. [Means for solving the problem]

[0008] The image display device of the present disclosure comprises a display means for displaying an image, and a support means that is holdable and detachably coupled to the display means to support the display means, the support means housing a drive circuit for the display means, and is capable of selecting between a first usage form in which the display means is coupled to the display means and a second usage form in which the display means is electrically connected without being coupled to the display means. Effect of the Invention

[0009] According to the present disclosure, by selecting a usage form in which the image display device is worn on the user's head, for example, the load on the head is reduced, allowing for comfortable image observation, and by selecting a usage form in which the user holds the image display device, the operation for image observation is made easy, thereby realizing an image display device that is highly convenient when used by multiple users in shifts, for example. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a handheld version of an image display device according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing a display unit of the image display device according to the first embodiment. [Diagram 3] FIG. 2 is a perspective view showing a supporting means of the image display device according to the first embodiment. [Figure 4] 2 is a central cross-sectional view showing a heat dissipation mechanism of the image display device according to the first embodiment. FIG. [Diagram 5] FIG. 2 is a perspective view showing a head-mounted form of the image display device according to the first embodiment. [Figure 6] 3 is a cross-sectional view showing the center of a support unit of the image display device according to the first embodiment. FIG. [Figure 7] FIG. 2 is a front view showing a cable storage section of a support means of the image display device according to the first embodiment. [Figure 8] FIG. 11 is a perspective view showing an example of a handheld form of an image display device according to a first modified example of the first embodiment. [Figure 9] FIG. 11 is a perspective view showing an example of a head-mounted form of an image display device according to a second modified example of the first embodiment. [Figure 10] FIG. 11 is a perspective view partially showing a head-mounted form of an image display device according to a second embodiment. [Figure 11] FIG. 11 is a perspective view showing an overall head-mounted form of an image display device according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Basic configurations and functions of the image display device in various embodiments] Before specifically disclosing the various embodiments, the basic configurations and functions of the image display devices in the various embodiments will be described.

[0012] The image display device according to the present disclosure includes a display means for displaying an image to a user, and a support means that can be held by the user and is detachably coupled to the display means to support the display means. The support means houses a drive circuit for the display means, and is selectable between a first use form in which the display means is mechanically coupled to the display means and a second use form in which the display means is electrically connected to the display means without being coupled to the display means. The first use form is assumed to be a form in which the user holds the support means to which the display means is coupled, and uses the display means in a handheld state. The second use form is assumed to be a form in which the user wears the display means separated from the support means on the head, holds the support means around the neck or shoulder, and uses the display means in a state in which the display means and the support means are electrically connected to each other by a wire such as a cable or wirelessly. In the first use form, images can be easily observed by the display means while holding the support means, and is particularly convenient when multiple users take turns using the display means. In the second usage form, the drive circuit and battery of the display means are housed in the support means, and the display means side is as light as possible, so that when worn on the head, the load on the user's head is small, allowing comfortable image observation. It is preferable that the drive circuit and battery are disposed near the end of the support means, specifically, closer to the end than the center of the support means. In the first usage form, the end of the support means is the gripping part, and in the second usage form, the end is located at a lower part of the user's body when worn around the neck or shoulder, so that the end is heavier than other parts, resulting in a stable usage state for the user.

[0013] The display means and the support means are attached and detached by engaging and releasing a first connecting portion of the display means with a second connecting portion of the support means. The first connecting portion and the second connecting portion may each have an electrical contact, for example, and may be connected to each other to electrically connect the display means and the support means to the first usage form. By adopting such a connecting form, the display means and the support means are connected to each other and are simultaneously electrically connected to the drive circuit of the display means, etc., which is convenient for the user.

[0014] The image display device further includes a head mounting means that can be detachably coupled to the display means and mounted on the head of a user. The head mounting means has a third coupling part, and in the second usage mode, the third coupling part is engaged with the first coupling part of the display means to detachably couple the head mounting means to the display means. By using the head mounting means, the display means can be stably positioned on the user's eye, allowing the user to comfortably observe images.

[0015] The support means may include a protective pad, a cable storage portion, a contact portion, a deformation portion, a heat dissipation mechanism, and the like. The protective pad is a member that can be opened and closed to cover the second joint, and is in an open state in the first usage mode and in a closed state in the second usage mode. The protective pad covers and protects the second joint in the second usage mode in which the second joint is not used, thereby preventing damage to the second joint, etc.

[0016] The cable storage section is capable of storing the cable in the first usage mode in which the cable is not used. By storing the cable that is not required in the first usage mode in the cable storage section, the user can comfortably observe images without being bothered by the cable. Note that an automatic storage mechanism using a spring or the like connected to one end of the cable may be provided in the cable storage section, so that the cable is automatically stored in the cable storage section when it is detached from the display means, thereby further improving user convenience.

[0017] The contact portion is provided, for example, in the center of the support means, and contacts the forehead of the user in the first usage mode, allowing the user to observe images in a stable manner. In the second usage mode, the contact portion contacts the back of the user's neck when the device is hung on the user's shoulder, for example, so as not to interfere with the user's operation.

[0018] The deformation part is provided at least at one location of the support means where the drive circuit, battery, etc. are not accommodated, and is a part that can bend to deform the support means. The deformation part has a strength that does not deform due to the weight of the display means when the display means is coupled to the deformed support means to observe an image. By providing the deformation part, in the first usage form, for example, the support means having a basic shape of an inverted U-shape is bent at the deformation part to deform it into an inverted L-shape, and the display means is coupled and arranged at the horizontal part of the inverted L-shape, making it a one-handed mode. In this case, in consideration of further improvement of the user's convenience, the convex part of the second coupling part for coupling with the first coupling part (concave) of the display means of the support means may be made detachable. For example, the second coupling part is arranged at the center part of the support means when the basic shape is an inverted U-shape, and the second coupling part is arranged at the horizontal part of the inverted L-shape when the basic shape is an inverted L-shape.

[0019] The heat dissipation mechanism dissipates heat generated by the drive circuit housed in the support means. For example, the heat dissipation mechanism has a heat conductive member, one end of which is in contact with a heat source such as an IC of the drive circuit, and the other end of which is in contact with the inner wall surface of the support means. The heat generated from the heat source is efficiently dissipated from the surface of the support means to the outside via the heat conductive member. The heat dissipation mechanism is preferably arranged, for example, in the central part of the support means having an inverted U shape, and dissipates heat from the top surface of the central part. In this case, even if the central part of the support means is close to the user's body (around the face) in the first use form in particular, heat is dissipated from the top surface of the central part, which is the part least susceptible to the effect of heat dissipation, and therefore the user's comfort is prevented from being impaired.

[0020] The support means may have at least one of a speaker, a microphone, a switch, and an LED arranged on the surface facing the user's body in the first usage form. The speaker is used, for example, to emit sound to the outside when an image on the display means is being observed. The microphone is used, for example, for external communication through the display means. The switch is used, for example, to turn the power on / off, etc. The LED is used, for example, to inform the image display status of the display means and the connection status of the joints, etc.

[0021] The basic shape of the support means may be an inverted U-shape or a Y-shape as described above. In the case of the inverted U-shape, the support means is preferably shaped so that in the second usage mode, the center of the inverted U-shape is located behind the user's neck and the two ends are located in front of the user's neck on both sides. Here, the support means is worn so that the surface opposite to the surface facing the user's body in the first usage mode comes into contact with the user's shoulder. When the above-mentioned shaped support means is worn by the user, it fits the user's body shape, and the user can observe the image on the display means without losing comfort.

[0022] The Y-shaped support means is specialized for one-handed holding in the first usage mode. In this case, the display means has a pair of first connecting parts, and the two ends of the Y-shape of the support means are a pair of second connecting parts, and the pair of first connecting parts and the pair of second connecting parts engage with each other to detachably connect the support means to the display means. With this configuration, a stable one-handed holding mode that is easy to use is obtained in the first usage mode, contributing to comfortable image observation.

[0023] The display means may be provided with both a first joint for the inverted U-shaped support means and a pair of first joints for the Y-shaped support means, so that the inverted U-shaped support means or the Y-shaped support means can be selectively joined. In this way, a highly convenient image display device that can be adapted to the user's preferred usage mode is realized.

[0024] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the embodiments do not limit the invention according to the claims. Although the embodiments describe a number of features, not all of these features are essential to the invention, and the features may be combined in any manner. Furthermore, in the accompanying drawings, the same reference numbers are used for the same or similar configurations, and duplicated descriptions are omitted.

[0025] [First embodiment] Hereinafter, the image display device according to the first embodiment will be described in detail with reference to the drawings.

[0026] As shown in FIG. 1 and other figures, the image display device 100 includes a display means 300 that displays an image to a user, and a support means 200 that can be held by the user and is detachably coupled to the display means 300 to support the display means 300. In this embodiment, a first use form in which the support means 200 is coupled to the display means 300 and a second use form in which the support means 200 is electrically connected to the display means 300 without being coupled to the display means 300 can be selected. The first use form is mainly assumed to be a use form in which the user holds the support means 200 coupled to the display means 300 in his / her hand and observes an image. The second use form is mainly assumed to be a use form in which the display means 300 is fixedly disposed on the user's head, and the support means 200 is hung around the user's neck or shoulder, etc., to observe an image.

[0027] FIG. 1 is a perspective view showing a handheld version of an image display device 100 according to this embodiment. 1, in the first usage mode, for convenience, a mode in which user H holds the support means 200 and looks into the display means 300 is defined as a handheld mode. Image observation in the handheld mode has the effect of facilitating shift work when there are multiple users.

[0028] The display means 300 has a display element (not shown) and a display optical system 330 (FIG. 2), and guides a magnified virtual image by the display element to the eye of the user H. As the display element, an EL panel, LCD, or the like can be used, but is not limited to these. The display means 300 does not have its own drive circuit or battery, and these relatively heavy components are provided on the support means 200 as described below.

[0029] The display means 300 also includes an imaging camera 310 that captures an image in front of the eyes of the user H, and an alignment camera 320. The imaging camera 310 is a stereo camera that captures a real image of the surroundings to be displayed to the user H via a display optical system 330. The alignment camera 320 is a stereo camera that captures the position and state of the image display device 100 by utilizing feature points such as markers and edges of objects from the captured image.

[0030] In this embodiment, an imaging camera 310 and an alignment camera 320 are provided, and the alignment camera 320 is monochrome and aims to achieve high-precision and high-fault-tolerance alignment by utilizing a wide angle of view, a high shutter speed, a long baseline length, and the like. It is also possible to obtain the display image and the alignment information only by the imaging camera 310. In addition, the alignment camera 320 may be replaced with a distance sensor using ultrasonic waves or infrared rays, etc. It is also possible to generate and display an image in which CG (Computer Graphics) or the like is superimposed on the real image acquired by the imaging camera 310. The superimposition of CG or the like on the captured real image may be realized by a configuration realized by the display means 300 or a configuration realized by the support means 200 described later. In addition, it may be realized by a video processing device such as a PC connected wirelessly, not by a wired connection using a cable.

[0031] FIG. 2 is a perspective view showing the display means 300. As shown in FIG. The user H looks through the display optical system 330 and observes the image. The user H can adjust the position of the display optical system 330 left and right to match the interpupillary distance. The display means 300 has a cable connection part 340 and a first coupling part 350 that is detachable from the support means 200 and the head mounting part 400 (FIG. 4), and the cable connection part 340 and the first coupling part 350 have electrical contacts. The first coupling part 350 has, for example, a concave part.

[0032] FIG. 3 is a perspective view showing the supporting means 200. As shown in FIG. The support means 200 accommodates a drive circuit (not shown) and a battery (not shown) for driving the display means 300 therein, and is capable of communication through an electrical contact provided in the second coupling portion 230. The second coupling portion 230 has, for example, a convex portion. In the first usage mode, the second coupling portion 230 is fixed in a state in which it is also electrically connected to the first coupling portion 350. The fixing method may be fixing with a screw or fixing with a latch mechanism. The image display device 100 also has a cable 500 (FIG. 5) that connects the drive circuit of the support means 200 and the display means 300 by wire in the second usage mode. The support means 200 has a cable storage portion 250 that can store the cable 500, and the cable 500 can be stored in the cable storage portion 250 in the handheld mode. The user H holds the end portion 220 of the support means 200 and holds the support means 200 by abutting the forehead against the pad 240, which is the abutment portion provided in the central portion 210.

[0033] In the handheld mode, when the surface of the support means 200 corresponding to the user H side is the first surface 270, the support means 200 has an LED 260, a switch (button) 261, a microphone 262, and a speaker 263 on the first surface 270. The LED 260 functions as a warning light that notifies the user H when the support means 200 is started or an error occurs. The switch 261 is used for operations such as turning on the power and experiencing a video. The microphone 262 and the speaker 263 are used when communicating using a system such as a web conference during a video experience. These mechanisms used by the user H are preferably arranged on the first surface 270 facing the face of the user H. In addition, when the surface opposite to the first surface 270 is the second surface 280, the support means 200 is bent so as to protrude toward the second surface 280 from the center 210 toward the end 220, for example, as shown by the arrow in FIG. 3. By forming the support means 200 in such a shape, it becomes possible for the user H to grasp the end portion 220 at a position away from the forehead portion that contacts the pad 240.

[0034] FIG. 4 is a central cross-sectional view showing the heat dissipation mechanism of the image display device 100. As shown in FIG. The driving circuit etc. contained in the support means 200 may include an IC (Integrated Circuit) etc. that becomes the heat source 700 that generates heat when driven. The support means 200 may be provided with a heat dissipation mechanism that efficiently dissipates heat generated from the heat source 700 to the outside. The heat dissipation mechanism has a heat conductive member 710 represented by a heat pipe, a graphite sheet, etc. One end of the heat conductive member 710 contacts the heat source 700, and the other end contacts the inner wall surface of the support means 200, and the heat generated from the heat source 700 is transferred to the exterior of the support means 200 through the heat conductive member 710 and dissipated to the outside. In this case, the heat dissipation point of the support means 200 is preferably a third surface 290 (here, the top surface of the center part 210) that is a surface other than the surface on the side where the second joint part 230 is arranged and other than the first surface 270 and the second surface 280 in the center part 210 of the support means 200. By using the third surface 290 as a heat dissipation point, it is possible to prevent heat from being dissipated into the area close to the face of the user H or into the area that the user H holds, and it is possible to dissipate heat without compromising the comfort of the user H.

[0035] FIG. 5 is a perspective view showing a head-mounted manner of the image display device 100. As shown in FIG. The image display device 100 further includes a head mounting unit 400 for fixing the display means 300 to the head of the user H. In the second usage mode of the image display device 100, the mode in which the user H mounts the head mounting unit 400 on his / her head and looks into the display means 300 as shown in Fig. 5 is defined as a head-mounted mode for convenience. When observing an image in the head-mounted mode, the user H can perform various tasks using both hands, which is convenient for the user H.

[0036] The head mounting unit 400 is, for example, ring-shaped and can be appropriately fastened and mounted on the head of the user H, and has a first connecting part 350 of the display means 300 and a detachable third connecting part 410 near the center. The head mounting unit 400 may have a sensor (for example, an infrared sensor) that detects that the third connecting part 410 is connected to the first connecting part 350. In this embodiment, the head mounting unit 400 is configured to be worn by wrapping it around the head, but it may also be a glasses-type head mounting part supported by the nose and ears, or a visor-type head mounting part that holds the head of the user H from the left and right.

[0037] In the head-mounted mode, the support means 200 is hung, for example, from the neck to the shoulders of the user H, and is disposed so that the end portion 220 hangs down in front of the neck of the user H, the central portion 210 abuts against the rear of the neck, and the second surface 280 is in contact with the body side of the user H. The cable 500 extends from the cable storage portion 250 of the support means 200 and is connected to the cable connection portion 340.

[0038] In the head-mounted mode, by hanging the support means 200 around the neck, part of the weight of the battery, driving circuit, etc. is supported by body parts other than the head, which has the effect of reducing the burden on the head. In this case, by arranging a relatively heavy component such as the battery near the end 220, it is possible to improve the sense of stability when the support means 200 is hung around the neck. In addition, by supporting the support means 200 by hanging it around the neck, it is possible to shorten the required length of the cable 500, and the cable 500 is prevented from getting tangled around the arm or body of the user H. Since the support means 200 has a curved shape from the center part 210 to the end 220, the second surface 280 is arranged on the body side of the user H, so that it can be worn stably while fitting to the body shape.

[0039] The support means 200 is electrically connected to the display means 300 in both the handheld mode and the head-mounted mode. Therefore, in addition to the configuration in which a drive circuit for driving the display means 300 is housed in the support means 200, there is no need to prepare a plurality of device configurations corresponding to each mode, such as a device configuration in which a drive circuit, etc. is arranged in the display means 300, and this also makes it possible to reduce costs.

[0040] FIG. 6 is a cross-sectional view showing the central portion 210 of the support means 200, where (a) shows the state of the central portion 210 in the handheld mode, and (b) shows the state of the central portion 210 in the head-mounted mode. The support means 200 has a rotating shaft portion 241 to which a protective pad 240 is rotatably connected. The protective pad 240 can rotate, for example, 90° with the rotating shaft portion 241 as a fulcrum, and in the head-mounted mode, covers and protects the second coupling portion 230 in which the electrical contact is exposed. In addition, in the head-mounted mode, the pad 240 is used as a contact portion for the rear of the neck of the user H. In consideration of safety when the pad 240 contacts the user H, the pad 240 is preferably a flexible member such as silicone rubber. If strength is required only for the connection portion with the rotating shaft portion 241, two-color molding of a resin material and a flexible material may be used. A click hinge or the like may be incorporated into the movable portion of the pad 240 so that the pad 240 is fixed at the position shown in FIG. 6(a) and the position shown in FIG. 6(b).

[0041] FIG. 7 is a front view showing the cable storage section 250 of the support means 200, where (a) shows the cable storage section 250 in the head-mounted mode, and (b) shows the cable storage section 250 in the hand-held mode. The cable storage section 250 has a storage lid 251. In the head-mounted mode, the support means 200, which stores a drive circuit and a battery, and the display means 300 are electrically connected by a cable 500, so a cutout is provided in the storage lid 251 so that the cable 500 can be extended. In the hand-held mode, the support means 200 and the display means 300 are electrically connected by the first connecting portion 350 and the second connecting portion 230, so the cable 500 is not necessary. At that time, the cable 500 can be folded and stored in the cable storage section 250 as shown in FIG. 7(b), and even if it is desired to suddenly change from the hand-held mode to the head-mounted mode, for example, the cable 500 can be immediately taken out and used.

[0042] [Variations] Various modifications of the image display device according to the first embodiment will be described below.

[0043] (Variation 1) In the first modification, a case where the support means 200 has a transformation function will be illustrated. Fig. 8 is a perspective view showing an example of a handheld form of an image display device 100 according to the first modification of the first embodiment.

[0044] The support means 200 has a basic shape of an inverted U-shape as shown in FIG. 1, but a deformation section may be provided at least in one location where a drive circuit, a battery, etc. are not housed. The deformation section 250 is a portion that can bend, for example, like a bellows, to deform the support means 200. FIG. 8 shows a case where the deformation section 250 is provided in one area of ​​the support means 200 indicated by a broken line. For example, the support means 200 can be made into an inverted L-shape by deforming the deformation section 250 provided in the bent portion of the inverted U-shape into an upright shape. In the first modification, the convex portion of the second coupling section 231 of the support means 200 is detachable, and the convex portion is attached to the horizontal portion of the inverted L-shape, and the display means 300 is coupled and arranged. Here, the deformation section 250 has a strength such that it is not deformed by the weight of the display means 300 when the display means 300 is coupled to the deformed support means 200 to observe an image. As described above, the image display device 100 of the first modification enables a handheld mode in which the user holds the support means 200 connected to the display means 300 with one hand, as shown in Fig. 8. This frees one hand when observing an image in the handheld mode, which contributes to further convenience for the user.

[0045] In the first modification, the deformation parts may be provided at a plurality of places on the support means 200, and the support means 200 may be deformed into various shapes according to the mode of use desired by the user. For example, the support means 200 may have a basic shape of an inverted U-shape, and two bending parts may be provided with deformation parts, and the support means 200 may be made, for example, a straight rod in the head-mount mode, and may be leaned against a place close to the user. It is also conceivable that, for example, a user in a seated position may use the support means 200 as a monopod for the display means 300.

[0046] (Variation 2) In the second modification, a case where the support means 200 is electrically connected wirelessly to the display means 300 without being coupled thereto in the second usage mode will be illustrated. Fig. 9 is a perspective view showing an example of a head-mounted form of the image display device 100 according to the second modification of the first embodiment.

[0047] In the second modification, in the head-mounted mode, the support means 200 and the display means 300 in the uncoupled state are electrically connected wirelessly instead of being connected by wire with the cable 500 shown in Fig. 5. For example, a short-distance communication standard such as Bluetooth allows wireless communication between the drive circuit etc. housed in the support means 200 and the display means 300. Here, it is preferable that the battery housed in the support means 200 is rechargeable by, for example, wireless power transmission. By adopting such a wireless connection mode in the head-mounted mode, the user is freed from the constraints of a wired connection, and more comfortable image observation is realized.

[0048] In the second modification, in addition to the above-mentioned wireless connection mode in the head-mounted mode, a wired connection using the cable 500 may also be possible, allowing the user to select either connection mode.

[0049] [Second embodiment] The image display device according to the second embodiment will be described in detail below with reference to the drawings.

[0050] Fig. 10 is a perspective view partially showing a head-mounted form of the image display device 101 according to the second embodiment. Fig. 11 is a perspective view generally showing a head-mounted form of the image display device 101 according to the second embodiment. The image display device 101 comprises a display means 301 for displaying an image to a user, and a support means 201 that can be held by the user and is detachably coupled to the display means 301 to support the display means 301 .

[0051] The display means 301 is provided at an upper portion thereof with a pair of first coupling parts 351 for coupling with the support means 201, and is provided at a lower portion thereof with a fourth coupling part 352 for coupling with a head mounting part. The display means 301 is also provided with a cable connection part 341 for connecting a cable 501. The support means 201 is Y-shaped, and houses therein a drive circuit (not shown) for driving the display means 301 and a battery (not shown), and has a pair of second coupling parts 231 for coupling with the display means 301.

[0052] The first coupling portion 351 and the second coupling portion 231 each have an electrical contact. In the handheld mode, the first coupling portion 351 and the second coupling portion 231 are coupled and fixed in an electrically connected state. The first coupling portion 351 and the second coupling portion 231 may be fixed by a screw or a latch mechanism. In addition, in the handheld mode, the third coupling portion 352 can be coupled to the pad 242, and the user holds the end portion 221 of the support means 201 with one hand and abuts the forehead against the pad 242 to observe an image. In this way, by using the Y-shaped support means 201, the support means 201 can be stably held with one hand in the handheld mode, and comfortable image observation that is easy for the user to use is realized.

[0053] In the head-mounted mode, the support means 201 is detached from the display means 301, and the support means 201 and the display means 301 are electrically connected by a cable 501. Also, a third connection part provided on a head mounting part (not shown) can be connected to the fourth connection part 352. The support means 201 is provided with a strap attachment part 601 such as a hole or a fastener, and a strap 600 can be attached to the strap attachment part 601. As a result, even in the head-mounted mode, the support means 201 can be attached to a place convenient for the user, such as the shoulder or arm, to observe an image.

[0054] In the second embodiment, similarly to the second modification of the first embodiment, in the head-mounted mode, it is possible to wirelessly connect the support means 201 and the display means 301 without using the cable 501. This frees the user from the constraints of a wired connection, realizing more comfortable image observation.

[0055] Although the preferred embodiments have been described above, the present disclosure is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present disclosure.

[0056] The disclosure of various embodiments includes the following configurations. (Configuration 1) A display means for displaying an image; a support means that is grippable and removably coupled to the display means to support the display means; Equipped with The support means is A drive circuit for the display means is housed therein, A first usage mode in which the display device is coupled to the display means and a second usage mode in which the display device is not coupled to the display means and is electrically connected to the display means can be selected. 1. An image display device comprising: (Configuration 2) the display means has a first coupling portion and the support means has a second coupling portion; The first coupling portion and the second coupling portion are engaged with each other, so that the support means is detachably coupled to the display means. 2. The image display device according to configuration 1. (Configuration 3) the first coupling portion and the second coupling portion each have an electrical contact, and when coupled to each other, the display means and the support means are electrically connected to each other, resulting in the first usage mode; 3. The image display device according to configuration 2. (Configuration 4) The second coupling portion is detachable and selectively disposed at a plurality of locations provided on the support means. 4. The image display device according to configuration 2 or 3. (Configuration 5) the support means has an openable and closable protective pad that covers the second coupling portion, The protective pad is in an open state in the first usage mode and in a closed state in the second usage mode. The image display device according to any one of configurations 2 to 4. (Configuration 6) a cable electrically connecting the display means and the support means to achieve the second usage mode; 6. The image display device according to any one of configurations 1 to 5. (Configuration 7) The support means is provided with a cable storage section for storing the cable. 7. The image display device according to configuration 6. (Configuration 8) The display means and the support means are wirelessly connected to each other in the second usage mode. 6. The image display device according to any one of configurations 1 to 5. (Configuration 9) The support means is in an inverted U-shape. The image display device according to any one of configurations 1 to 8. (Configuration 10) In the second mode of use, the support means is shaped to be hung on the shoulders of a user so that a central portion of the inverted U-shape is located behind the neck of the user and two end portions are located in front of the neck of the user on either side. 10. The image display device according to configuration 9. (Configuration 11) The support means is attached in the second usage mode such that a surface opposite to a surface facing the user's body in the first usage mode comes into contact with the user's shoulder. 11. The image display device according to configuration 10. (Configuration 12) The support means is In the first usage mode, the head restraint has a contact portion that contacts the front head of the user, In the second usage mode, when the bag is hung on the shoulder of a user, the contact portion contacts the back of the user's neck. 12. The image display device according to any one of configurations 9 to 11. (Configuration 13) The support means is Y-shaped. The image display device according to any one of configurations 1 to 8. (Configuration 14) The display means has a pair of first coupling portions, The supporting means has two ends of the Y-shape that form a pair of second connecting portions, The pair of first connecting portions and the pair of second connecting portions are engaged with each other, so that the support means is detachably connected to the display means. 14. The image display device according to configuration 13. (Configuration 15) the support means houses a battery for driving the display means; The battery is disposed at an end of the support means. The image display device according to any one of configurations 1 to 14. (Configuration 16) The support means has a deformation portion that is bent and deformable at at least one location. 16. The image display device according to any one of configurations 1 to 15. (Configuration 17) A head mounting means is provided which is detachably connected to the display means and can be mounted on the user's head. 17. The image display device according to any one of configurations 1 to 16. (Configuration 18) the head mounting means has a third coupling portion; The first connecting portion and the third connecting portion are engaged with each other to removably connect the head mounted means to the display means. 18. The image display device according to configuration 17. (Configuration 19) At least one of a speaker, a microphone, a switch, and an LED is disposed on a surface of the support means that faces the user's body in the first usage mode. 19. The image display device according to any one of configurations 1 to 18. (Configuration 20) The support means accommodates a heat dissipation mechanism that dissipates heat generated by the drive circuit to the outside. 20. The image display device according to any one of configurations 1 to 19. (Configuration 21) the heat dissipation mechanism has a heat conductive member, one end of the heat conductive member contacts the drive circuit and the other end contacts the inner wall surface of the support means; 21. The image display device according to configuration 20. [Explanation of symbols]

[0057] 100, 101: Image display device 200,201:Support means 300,301:Display means 310: Imaging camera 320: Alignment camera 330: Display optical system 340, 341: Cable connection part 350, 351: First joint 230, 231: Second joint 410: Third joint 352: The fourth joint 400: Head mounted part 500,501:Cable 600: Strap 601: Strap attachment part 700: Heat source 710: Thermal conductive materials

Claims

1. A display means for displaying an image; a support means that is grippable and removably coupled to the display means to support the display means; Equipped with The support means is A drive circuit for the display means is housed therein, A first usage mode in which the display device is coupled to the display means and a second usage mode in which the display device is not coupled to the display means and is electrically connected to the display means can be selected.

1. An image display device comprising:

2. the display means has a first coupling portion and the support means has a second coupling portion; The first coupling portion and the second coupling portion are engaged with each other, so that the support means is detachably coupled to the display means. The image display device according to claim 1 .

3. the first coupling portion and the second coupling portion each have an electrical contact, and when coupled to each other, the display means and the support means are electrically connected to each other, thereby achieving the first usage mode; The image display device according to claim 2 .

4. The second coupling portion is detachable and selectively disposed at a plurality of positions provided on the support means. The image display device according to claim 2 .

5. the support means has an openable and closable protective pad that covers the second coupling portion, The protective pad is in an open state in the first usage mode and in a closed state in the second usage mode. The image display device according to claim 2 .

6. a cable electrically connecting the display means and the support means to achieve the second usage mode; The image display device according to claim 1 .

7. The support means is provided with a cable storage section for storing the cable. The image display device according to claim 6.

8. The display means and the support means are wirelessly connected to each other in the second usage mode. The image display device according to claim 1 .

9. The support means is in an inverted U-shape. The image display device according to claim 1 .

10. In the second usage mode, the support means is shaped to be hung on the shoulders of a user so that a central portion of the inverted U-shape is located behind the neck of the user and two end portions are located in front of the neck of the user on either side. The image display device according to claim 9.

11. the support means is attached in the second usage mode such that a surface opposite to a surface facing the user's body in the first usage mode comes into contact with the user's shoulder. The image display device according to claim 10.

12. The support means is In the first usage mode, the head restraint has a contact portion that contacts the front head of the user, In the second usage mode, when the bag is hung on the shoulder of a user, the contact portion contacts the back side of the user's neck. The image display device according to claim 9.

13. The support means is Y-shaped. The image display device according to claim 1 .

14. The display means has a pair of first coupling portions, The supporting means has two ends of the Y-shape that form a pair of second connecting portions, the pair of first coupling portions are engaged with the pair of second coupling portions, so that the support means is detachably coupled to the display means; The image display device according to claim 13.

15. the support means houses a battery for driving the display means; The battery is disposed at an end of the support means. The image display device according to claim 1 .

16. The support means has a deformation portion that is bent and deformable at at least one location. The image display device according to claim 1 .

17. A head mounting means is provided which is detachably connected to the display means and can be mounted on the user's head. The image display device according to claim 1 .

18. the head mounting means has a third coupling portion; The first coupling portion and the third coupling portion are engaged with each other to detachably couple the head mounted means to the display means. The image display device according to claim 17.

19. At least one of a speaker, a microphone, a switch, and an LED is disposed on a surface of the support means that faces a body of a user in the first usage mode. The image display device according to claim 1 .

20. The support means accommodates a heat dissipation mechanism that dissipates heat generated by the drive circuit to the outside. The image display device according to claim 1 .

21. the heat dissipation mechanism has a heat conductive member, one end of the heat conductive member contacts the drive circuit and the other end contacts the inner wall surface of the support means; The image display device according to claim 20.

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