Video display device

Abstract

To enable preventing the inside of a device from being damaged by sunlight.SOLUTION: A video display device (50) is used in a state of being close to eyes of a user. The video display device includes: lenses 60 arranged opposite to the eyes in a use state; and a shielding part (65) for the lenses. The shielding part allows a video inside the video display device which has been transmitted through the lenses to be projected onto the eyes of the user, and blocks or attenuates sunlight incident on the lenses.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to an image display device that allows a user to view images while holding the device close to their face. [Background technology]

[0002] Conventionally, head-mounted displays (hereinafter referred to as "HMDs") have been used, which allow a user to view images while placing a goggle-shaped housing on the user's face. As disclosed in Patent Document 1, the HMD includes two convex lenses provided corresponding to the user's eyes, and a display device provided behind the convex lenses.

[0003] In such an HMD, for example, the display device is configured to include a liquid crystal panel, and the optical characteristics of the image on the liquid crystal panel are adjusted by a convex lens before it is projected onto the user's eyes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-100257 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the above-mentioned HMD is used outdoors, if sunlight shines on the convex lens, the sunlight is concentrated by the convex lens, causing localized heat buildup on the liquid crystal panel, which can be damaged.

[0006] One possible way to use an HMD outdoors is to present a virtual reality experience by displaying a past scene from the same location as the current scene. This allows the user to enjoy comparing the real scene with the past scene. In such use, when viewing the image on the HMD, the convex lens is covered by the face. However, when the HMD is removed from the face to view the real scene or when the HMD is carried, sunlight is likely to penetrate the convex lens. An invention that can resolve the above-mentioned inconveniences in such situations has been desired.

[0007] The present disclosure has been made in view of the above points, and has an object to provide an image display device that can prevent damage to the inside of the device due to sunlight. [Means for solving the problem]

[0008] An image display device according to one aspect of the present disclosure is an image display device that is used in a state where it is brought close to a user's eye, and includes a lens that is arranged facing the eye in a state of use, and a shielding portion for the lens. a transparent plate disposed at a predetermined distance from the lens; The shielding portion allows an image inside the image display device that has passed through the lens to be projected onto the user's eye, and blocks or attenuates sunlight that is incident on the lens. The plate is laminated to the nose of the user, and the plate has a recess in an area corresponding to the nose of the user. do. Furthermore, one aspect of the image display device of the present disclosure is an image display device that is used while being held close to the user's eye, and includes a lens that is positioned facing the eye when in use, a shielding portion for the lens, and a transparent plate that is positioned a predetermined distance from the lens, wherein the shielding portion allows an image inside the image display device that has passed through the lens to be projected onto the user's eye, and absorbs at least the infrared range of sunlight that enters the lens, and is formed by being laminated on the plate, and the plate has a recess in an area corresponding to the user's nose. [Effects of the Invention]

[0009] According to the present disclosure, even in a situation where sunlight is incident on the lens, the shielding portion can block the sunlight and prevent it from passing through the lens and entering the image display device. This makes it possible to avoid damage to the display unit and other components inside the image display device due to sunlight being concentrated through the lens. Furthermore, in such a situation, the shielding portion attenuates or absorbs the sunlight incident on the lens, preventing the area where the sunlight is concentrated by the lens from becoming too hot, thereby also avoiding damage to the inside of the image display device. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic perspective view of a case-attached image display device according to a first embodiment. [Figure 2] 1 is a schematic perspective view of a case and an image display device according to a first embodiment. [Figure 3] FIG. 2 is a bottom view of the case and the image display device according to the first embodiment. [Figure 4] 1 is a rear view of the case-attached image display device according to the first embodiment. [Figure 5] FIG. 5 is a rear view similar to FIG. 4, in which a part of the configuration of the image display device is exploded. [Figure 6] 1 is a schematic cross-sectional view for explaining a case-attached image display device according to a first embodiment. [Figure 7] FIG. 2 is a front view of a case according to the first embodiment. [Figure 8] FIG. 2 is a rear view of the case according to the first embodiment. [Figure 9] FIG. 2 is a plan view of a case according to the first embodiment. [Figure 10] FIG. 2 is a bottom view of the case-attached image display device according to the first embodiment. [Figure 11] FIG. 2 is a side view of the case according to the first embodiment. [Figure 12] FIG. 8 is a cross-sectional view taken along line AA in FIG. [Figure 13] 1 is a diagram showing an example of a state in which the case-attached image display device according to the first embodiment is used. [Figure 14] FIG. 10 is a schematic perspective view of a case-attached image display device according to a second embodiment. [Figure 15] FIG. 10 is a schematic perspective view of a case and an image display device according to a second embodiment. [Figure 16] FIG. 10 is a front view of a case according to a second embodiment. [Figure 17] FIG. 10 is a rear view of the case according to the second embodiment. [Figure 18] FIG. 10 is a plan view of a case according to a second embodiment. [Figure 19] FIG. 10 is a bottom view of a case according to a second embodiment. [Figure 20] FIG. 10 is a side view of a case according to a second embodiment. [Figure 21] 21 is a side view similar to FIG. 20 of the case with the cover member open. [Figure 22] FIG. 17 is a cross-sectional view taken along line BB in FIG. 16. [Figure 23] FIG. 10 is a rear view of the case-attached image display device according to the second embodiment. [Figure 24] 24 is a rear view similar to FIG. 23 of the case-attached image display device with the cover member open. FIG. [Figure 25] 10 is a diagram showing an example of a state in which a case-attached image display device according to a second embodiment is used. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a video display device according to an embodiment will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the following embodiment, and can be appropriately modified and implemented without departing from the spirit of the present invention. In the following figures, some components may be omitted for the sake of convenience. Furthermore, in the following description, unless otherwise specified, "up," "down," "left," "right," "front," and "rear" are used based on the directions indicated by arrows in each figure (based on the user). However, the orientation of each component in the following embodiment is merely an example, and can be changed to any orientation.

[0012] [First embodiment] FIG. 1 is a schematic perspective view of an image display device and a case for the image display device according to the first embodiment. FIG. 2 is a schematic perspective view of the case and image display device according to the first embodiment. As shown in FIGS. 1 and 2, an image display device 50 is housed in a case 10 for an image display device (hereinafter simply referred to as "case"). In other words, an image display device with a case 1 is configured to include the case 10 and the image display device 50. First, the schematic configuration of the image display device 50 will be described below.

[0013] The image display device 50 is a device known as VR goggles, and is used while held close to the user's eyes. The image display device 50 is a device that allows a user to virtually experience images such as video images as if they were displayed on a large screen. The image display device 50 includes a main unit 51 and a battery unit 52 that is separate from the main unit 51. The main unit 51 and the battery unit 52 are connected by a belt-shaped cable 53 for supplying power. The cable 53 is bundled in a folded state and stored in the case 10.

[0014] The main unit 51 includes a housing 55 that is rectangular and elongated from side to side when viewed from the front (front), with each corner formed in an arc shape. The housing 55 extends generally in the front-to-rear direction, but is tapered in shape, widening from the front to the rear. A cable 53 is connected to an upper surface 55a of the housing 55.

[0015] 3 is a bottom view of the case and the image display device according to the first embodiment. As shown in FIG. 3, an operation area 56 is provided on the bottom surface 55b of the housing 55, where buttons such as a power button and a USB port are arranged on the left and right.

[0016] Housing 55 is formed with an open rear end 55c. As shown in Fig. 2, rear end 55c of housing 55 is formed with a center recessed forward from both the left and right sides to accommodate the shape of the user's face. Furthermore, the lower center of rear end 55c of housing 55 is further recessed to accommodate the shape of the user's nose.

[0017] Fig. 4 is a rear view of the case-attached image display device according to the first embodiment. Fig. 5 is a rear view similar to Fig. 4, in which a portion of the image display device is disassembled. As shown in Figs. 4 and 5, a partition wall 58 extending in the up-down and left-right directions is provided on the rear end 55c side of the housing 55. The partition wall 58 is disposed on the rear end 55c side of the housing 55.

[0018] A pair of lenses 60 are provided side by side on the left and right sides of the partition wall 58. The partition wall 58 has a pair of openings for holding the lenses 60, and the edges of the openings are thickened to form holding portions 58a into which the outer peripheries of the lenses 60 can be fitted (see FIG. 6), and the lenses 60 are held via the holding portions 58a. Because the rear end 55c side of the housing 55 is open, the partition wall 58 and the lenses 60 can be exposed at the rear of the housing 55 (toward the viewer in FIGS. 4 and 5). A recess 58b is formed in the lower center of the partition wall 58 to fit the user's nose. The recess 58b is provided at a position corresponding to the recessed portion in the lower center of the rear end 55c of the housing 55.

[0019] Each lens 60 is disposed opposite the eye of the user when the image display device 50 is in use. In this embodiment, various types of convex lenses, such as biconvex and plano-convex lenses, can be used as the lens 60, and the lens 60 can be used as part or all of an optical system to achieve a desired focal length and optical characteristics.

[0020] FIG. 6 is a cross-sectional view illustrating a case-attached video display device according to the first embodiment. In FIG. 6, the battery unit 52, the cable 53, and some other components inside the housing 55 are omitted. As shown in FIG. 6, a video display device 62 is provided in front of the lens 60 inside the housing 55. A liquid crystal display panel having pixel circuits arranged in a matrix in a display area corresponding to the pixels can be used as the video display device 62. Furthermore, various configurations can be used for the video display device 62 as long as it can project an image through the lens 60 to the user's eyes. An organic EL panel or the like may be used instead of a liquid crystal display panel. Furthermore, the video display device 62 may be an external terminal device such as a smartphone that is detachably mounted inside the housing 55.

[0021] The image display device 50 includes a plate 64 disposed a predetermined distance rearward from the lens 60, a shielding portion 65 for the lens 60, and an abutment member 67 provided on the rear end 55c side of the housing 55. The shielding portion 65 is formed by being laminated on the rear surface of the plate 64. Therefore, the shielding portion 65 is integrated with the plate 64, and this integrated structure can be used as an attachment 68. This makes it possible to later attach the attachment 68 to the image display device 50 and obtain the function of the shielding portion 65, which will be described later. Furthermore, the attachment 68 can be easily attached to and detached from the image display device 50, facilitating maintenance and replacement of the attachment 68.

[0022] The plate 64 is placed inside the housing 55 from the rear end 55c side of the housing 55, and the front surface of the plate 64 (attachment 68) abuts against the holding portion 58a of the partition wall 58. The plate 64 is made of a transparent (highly transparent) material that transmits light in the thickness direction. Organic glass or inorganic glass can be used as the light-transmitting material for the plate 64, and from the standpoints of strength and cost, it is preferable to make the plate 64 from acrylic resin or polycarbonate.

[0023] The abutment member 67 includes a cushion member 67a that abuts against the user's face, and a connecting portion 67b that is connected to the front end of the cushion member 67a and fits into the rear end 55c of the housing 55. The connecting portion 67b of the abutment member 67 comes into contact with the rear surface of the attachment 68 in a state where it is fitted into the rear end 55c of the housing 55. This allows the attachment 68 to be sandwiched from the front and rear by the connecting portion 67b of the abutment member 67 and the holding portion 58a of the partition wall 58, and the attachment 68 including the plate 64 can be held via the abutment member 67. Note that the abutment member 67 may have a configuration other than fitting using the connecting portion 67b, as long as it can be attached to the rear of the housing 55. 4, for example, hook-and-loop fasteners 69 (shown by two-dot chain lines) may be provided on each of the opposing surfaces of cushion member 67a and top wall 12, left side wall 14, and right side wall 15 of case 10, which will be described later, and abutment member 67 may be detachably attached to the rear of housing 55 by means of such hook-and-loop fasteners 69. In this case, hook-and-loop fasteners 70 (shown by two-dot chain lines) may be provided on each of the opposing surfaces of attachment 68 and partition wall 58, and attachment 68 may be detachably attached to partition wall 58 by means of such hook-and-loop fasteners 70.

[0024] Returning to FIG. 5 , in the attachment 68 including the plate 64, a recess 68a is formed at a position aligned with the recess 58b of the partition wall 58. Furthermore, in the abutting member 67, a recess 67c is formed at a position aligned with the recess 58b of the partition wall 58 and the recess 68a of the attachment 68. Therefore, like the recess 58b of the partition wall 58, the recess 68a of the attachment 68 (plate 64) and the recess 67c of the abutting member 67 are formed in an area corresponding to the user's nose. By forming the recess 68a of the attachment 68, the recess 67c of the abutting member 67 passes through the recess 68a and is received in the recess 58b of the partition wall 58.

[0025] The shielding portion 65 is a sheet-like or film-like member laminated on the rear side of the plate 64. The shielding portion 65 is configured to perform both the following first and second functions. The first function is to allow an image inside the image display device 50 that has passed through the lens 60 to be projected onto the user's eyes. The second function is to block or attenuate sunlight that enters the lens 60 from outside the image display device 50. The first and second functions of the shielding portion 65 will be described below.

[0026] When a user views an image on the image display device 50 in a state where the first function is exercised, the user's eyes are close to the lens 60, and the rear end 55c side of the housing 55 is generally closed. In this state, a dark state is maintained inside and outside the housing 55 sandwiching the lens 60, and an image on the image display device 62, which is an image inside the image display device 50, is displayed. Light from the displayed image passes through the lens 60 and then enters the shielding portion 65. The shielding portion 65 transmits all or most of the light of the image that has passed through the lens 60. As a result, the shielding portion 65 allows the light of the image to be projected onto the user's eyes, thereby exercises the first function. In other words, when the image display device 50 is in use, the shielding portion 65 is configured to have low reflectivity for the light of the image that passes through the lens 60 and enters from the front, allowing the user to view the image.

[0027] An example of a situation in which the second function is exerted is a state in which sunlight (sunlight) shines into the image display device 50 with the rear end 55c of the housing 55 facing upward. In this state, the shielding portion 65 reflects all or most of the sunlight entering from the side of the shielding portion 65 opposite the lens 60 (the rear side). As a result, the shielding portion 65 blocks or attenuates the sunlight entering the lens 60, and ultimately blocks or attenuates the sunlight entering the image display device 50, thereby exerting the second function.

[0028] When the shielding portion 65 attenuates the sunlight incident on the lens 60, the heat rays contained in the sunlight are also attenuated, and even if the sunlight incident on the lens 60 is concentrated inside the housing 55, it is possible to prevent the areas inside the housing 55 or the image display device 62 where the sunlight is concentrated from becoming hot. Furthermore, when the shielding portion 65 blocks the sunlight incident on the lens 60, sunlight does not enter the lens 60 and the lens 60 cannot concentrate the sunlight, so it is possible to prevent the occurrence of areas inside the housing 55 or the image display device 62 becoming hot.

[0029] Furthermore, the shielding portion 65 may be configured to absorb sunlight instead of or in addition to the above-described reflection or attenuation of sunlight. By performing such an absorption function, the heat rays contained in the sunlight are reduced by the shielding portion 65 and transmitted. Therefore, even if sunlight incident on the lens 60 is concentrated inside the housing 55, it is possible to prevent the inside of the housing 55 or the area where the sunlight is concentrated on the video display device 62 from becoming too hot, thereby achieving the second function.

[0030] The attachment 68 in which the shielding portion 65 is laminated and integrated with the plate 64 has a structure called a one-way mirror, a half mirror, or a magic mirror.

[0031] The shielding portion 65 may be configured, for example, by providing at least one of a light reflecting layer that reflects incident sunlight and a heat ray absorbing layer that absorbs incident sunlight on the surface of a transparent film substrate. An adhesive layer for laminating the shielding portion 65 to the plate 64 is provided on the back surface of the transparent film substrate.

[0032] The light-reflecting layer of the shielding portion 65 has the function of reflecting all sunlight. Alternatively, it may have the function of reflecting some or most of the sunlight and transmitting the remaining sunlight, i.e., attenuating the sunlight and reducing the incidence of light being concentrated on the image display device 62 through the lens 60. A specific example of the light-reflecting layer is preferably a metal vapor deposition layer, but other metal sputtering layers, metal plasma layers, metal powder kneaded layers, metal plating layers, chemical plating layers, etc. are also acceptable. The metal used in these layers is preferably aluminum, but other examples include gold, silver, copper, nickel, cobalt, chromium, tin, indium, etc. Instead of the metal vapor deposition layer, the light-reflecting layer may be configured by laminating a film that exhibits the same function as the metal vapor deposition layer.

[0033] The heat ray absorbing layer of the shielding portion 65 is a layer capable of absorbing infrared rays, and is, for example, a layer containing an infrared absorbing agent. The heat ray absorbing layer of the shielding portion 65 is capable of absorbing at least the infrared range of sunlight incident on the lens 60. Specific examples include a film layer in which an infrared absorbing agent is kneaded into a transparent substrate film, a coating layer containing an infrared absorbing agent, and a printed layer containing an infrared absorbing agent. Examples of the infrared absorbing agent include inorganic infrared absorbing agents such as tin oxide, indium oxide, indium tin oxide, magnesium oxide, titanium oxide, chromium oxide, zirconium oxide, nickel oxide, aluminum oxide, zinc oxide, iron oxide, antimony oxide, antimony-doped tin oxide, lead oxide, and bismuth oxide, and organic infrared absorbing agents such as phthalocyanines, naphthalocyanines, and anthraquinones.

[0034] The transparent film substrate of the shielding portion 65 is preferably a polyester resin film, and other examples include films of various resins such as vinyl chloride resin film and polyolefin resin film, or laminated films of these.

[0035] Next, the case 10 will be described with reference to FIGS. 7 to 13 in addition to FIGS. 1 to 3. FIG. 7 is a front view of the case according to the first embodiment. FIG. 8 is a rear view of the case according to the first embodiment. FIG. 9 is a plan view of the case according to the first embodiment. FIG. 10 is a bottom view of the case-equipped image display device according to the first embodiment. FIG. 11 is a side view of the case according to the first embodiment. FIG. 12 is a cross-sectional view taken along line AA in FIG. 7. FIG. 13 is a diagram showing an example of the use state of the case-equipped image display device according to the first embodiment.

[0036] 1 and 2, the case 10 includes a case body 11 that houses the battery unit 52 of the image display device 50 at the front and the main unit 51 at the rear, side by side. The case body 11 is made of an appropriate synthetic resin. The case body 11 includes an upper wall 12, a lower wall 13, a left side wall 14, and a right side wall 15 that extend in the front-to-rear direction, and a front wall 17 that is located slightly rearward of the front ends of these walls. The case body 11 may also be made of paper, wood, or a metal with a light specific gravity, such as aluminum.

[0037] The case body 11 has an upper wall 12, a lower wall 13, a left side wall 14, and a right side wall 15 formed as a cylindrical body so that it can be placed along the housing 55 of the image display device 50 to be housed therein. The cylindrical body extends generally in the front-to-rear direction, but is formed in a tapered shape that widens from the front to the rear in accordance with the shape of the housing 55. The rear end side (one end side) of the case body 11 is not closed, and an opening 19 is formed. With the image display device 50 housed in the case body 11, a lens 60 of the image display device 50 is arranged on the opening 19 side (see FIGS. 5 and 6).

[0038] The front end side (other end side) of the case body 11 is closed by a front wall 17. The front wall 17 is formed in a curved shape with the center bulging forward from both ends in the left-right direction. Here, the above-mentioned battery unit 52 has a curved shape, and the front wall 17 is formed in a curved shape that follows the curved shape of the battery unit 52. This reduces the free space in the case body 11 and reduces the space that the housing 55 and battery unit 52 move when housed inside the case body 11, thereby improving stability.

[0039] Extension pieces 17a are formed continuously on both left and right end sides of the front wall 17 (the right side is not shown in Figs. 1 and 2). The extension pieces 17a are bent so as to fit along the inner surfaces of the left side wall 14 and the right side wall 15, and are attached to the left side wall 14 and the right side wall 15 via grommets 25, which will be described later. The front wall 17 is also joined to the inner surfaces of the upper wall 12 and the lower wall 13 via L-shaped piece members 21, which will be described later.

[0040] A rectangular hole 12a that is elongated in the front-rear direction is formed in the upper wall 12 of the case body 11. A cable 53 that is folded inside the case body 11 is fitted into the rectangular hole 12a.

[0041] As shown in Fig. 3, the case body 11 has a slot-shaped window portion 13a extending in the left-right direction in the bottom wall 13. The window portion 13a is formed in accordance with an operation area 56 on the bottom surface 55b of the housing 55 of the image display device 50, and the operation area 56 can be accessed through the window portion 13a (see Fig. 10). A reinforcing wall 22 is provided in the center portion of the bottom wall 13 in the left-right direction, extending across the front-rear direction. The reinforcing wall 22 is divided into two portions so as not to overlap with the window portion 13a.

[0042] 9 and 10, the rear end sides of the upper wall 12 and the lower wall 13 of the case body 11 are recessed forward at the center from both the left and right sides to accommodate the shape of the user's face. Therefore, the case body 11 is formed so that the rear regions of the left side wall 14 and the right side wall 15 protrude rearward, and these rear regions serve as light-shielding walls 23. In other words, the light-shielding walls 23 are formed on both the left and right sides of the rear end side (one end side) of the case body 11, in the direction in which the pair of lenses 60 (see FIG. 5) are aligned, and the light-shielding walls 23 block light from the outside to the inside of the case body 11. The rear end center of the lower wall 13 is further recessed to accommodate the shape of the user's nose.

[0043] Holes 24 are formed in the front end sides (other end sides) of the left side wall 14 and the right side wall 15 of the case body 11. More specifically, the holes 24 are formed in positions immediately adjacent to the front ends of the left side wall 14 and the right side wall 15, or with a slight gap therebetween. Each hole 24 is formed by providing a grommet 25 in a hole (not shown) formed directly in the front end side of the left side wall 14 and the right side wall 15. The holes 24 and the grommets 25 form connection portions 26, and the case body 11 is provided with the connection portions 26 at two locations, one on the left side and one on the right side. Each connection portion 26 is provided in the vertical center of the left side wall 14 and the right side wall 15. The grommets 25 penetrate the extension pieces 17a of the front wall 17. Therefore, the extension pieces 17a have the function of fixing the left and right sides of the front wall 17 and the function of reinforcing the area around the grommets 25.

[0044] As shown in Fig. 13, a long strap S is connected to the connection part 26. Connection fittings Sa are provided on both ends of the strap S, and the connection fittings Sa are maintained in a state of being inserted through holes 24 of the connection part 26. The connection fittings Sa are not particularly limited, but may be configured as a snap hook, a D-ring, a carabiner, a combination thereof, or the like.

[0045] When a user carries or transports the case-attached image display device 1, the user passes the strap S around the shoulder or neck and holds the strap S. At this time, the case-attached image display device 1 including the case 10 is suspended by the strap S. In this state, the connection part 26 side, which was the front of the case 10, is positioned vertically upward, and the opening 19 side faces downward.

[0046] According to the first embodiment, when a user wants to view an image on image display device 50, he or she holds case 10 containing image display device 50 with both hands and brings abutment member 67 on the opening 19 side into contact with the user's face. This brings lens 60 close to the user's eyes, and the image displayed on image display device 62 is projected onto the user's eyes through lens 60.

[0047] When the opening 19 side of the case 10 is brought close to the user's face, the inside of the case 10 becomes dark, and the entire image display device 50 is also placed in a dark space. In this state, the shielding portion 65 located between the lens 60 and the user's eye allows the light of the image that has passed through the lens 60 to pass through, allowing the user to view the image on the image display device 50. The image display device 50 is equipped with a detection portion (not shown) such as a proximity sensor, which detects whether the user's face is close to the detection portion, and controls the ON / OFF of the image display device 62 depending on the detection result.

[0048] Light-shielding walls 23 are formed on both the left and right sides of the case body 11, so that light from the outside to the inside of the case body 11 can be blocked, and the inside of the case 10 can be kept dark.

[0049] Furthermore, when a user temporarily stops viewing an image on the image display device 50, they tend to remove the contact member 67 from their face and hold the case 10 with both hands. In this position, the opening 19 of the case 10 and the rear end 55c of the housing 55 of the image display device 50 may be facing upward. In such a case, when the case-attached image display device 1 is used outdoors, sunlight enters the shielding portion 65 inside the housing 55. As described above, the shielding portion 65 has at least one of the functions of blocking, attenuating, and absorbing sunlight. This prevents sunlight from entering the lens 60, and even if sunlight enters the lens 60 and is concentrated inside the housing 55, it can prevent the concentrated area from becoming too hot. This prevents damage to the housing 55 and the image display device 62 caused by light concentration by the lens 60.

[0050] Furthermore, by providing connection portion 26, strap S can be easily attached to the side opposite opening 19 of case body 11. By attaching strap S, when a user carries cased image display device 1 without viewing an image on image display device 50, strap S can be passed around the user's shoulder or neck to hold cased image display device 1. By holding it in this manner, cased image display device 1 is suspended by strap S.

[0051] In this state, as shown in Fig. 13, the connection portion 26 side, which was previously the front side of the case 10, is now positioned vertically upward, and the opening 19 side can face downward. In other words, the rear end 55c of the housing 55 and the lens 60 of the image display device 50 housed in the case 10 can face downward. When used outdoors, sunlight enters from above or diagonally above, so it is possible to prevent sunlight from entering the lens 60, which faces downward. Therefore, this also makes it possible to prevent sunlight from entering the lens 60, and to avoid damage to the image display device 62 and the like due to light concentration by the lens 60.

[0052] In this way, by providing the connection part 26 on the case body 11, it is possible to facilitate hanging and holding by the strap S, and in turn, it is possible to carry the lens 60 with the lens 60 facing downward, thereby preventing damage due to the incidence of sunlight.

[0053] Furthermore, since connection part 26 is provided on the front end side opposite opening 19 of case body 11, it becomes easier to maintain lens 60 facing downward when case 10 is suspended by strap S. Moreover, since connection parts 26 are provided in two locations, on the left and right, both longitudinal ends of strap S can be attached to make it easier to hold the case in a suspended state.

[0054] Furthermore, since the connecting portion 26 has the hole 24, it can be easily connected to the connecting fitting Sa, and the versatility for various long bodies such as the strap S can be improved.

[0055] [Second embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. 14 to 25. In the following description, the same or equivalent components as those in the first embodiment may be designated by the same reference numerals, and their description may be omitted or simplified. FIG. 14 is a schematic perspective view of a case-equipped image display device according to the second embodiment. FIG. 15 is a schematic perspective view of a case and an image display device according to the second embodiment. FIG. 16 is a front view of a case according to the second embodiment. FIG. 17 is a rear view of a case according to the second embodiment. FIG. 18 is a plan view of a case according to the second embodiment. FIG. 19 is a bottom view of a case according to the second embodiment. FIG. 20 is a side view of a case according to the second embodiment. FIG. 21 is a side view of the case with the cover member opened, similar to FIG. 20. FIG. 22 is a cross-sectional view taken along line BB in FIG. 16. FIG. 23 is a rear view of a case-equipped image display device according to the second embodiment. FIG. 24 is a rear view of a case-equipped image display device with the cover member opened, similar to FIG. 23. FIG. 25 is a diagram showing an example of a state in which the case-attached image display device according to the second embodiment is used.

[0056] As shown in Figures 14 to 17, in the second embodiment, compared to the first embodiment, a pad 31 is provided on the rear end side of the case body 11, and a cover member 32 (not shown in Figures 14 to 16) is provided to open and close the opening 19 of the case body 11.

[0057] In the second embodiment, the pad 31 is made of a cushioning material such as foam resin. The pad 31 is attached to the rear end sides of the upper wall 12 and the lower wall 13 of the case body 11. One pad 31 is attached to the upper wall 12, and both ends thereof extend to be located near the left and right ends of the upper wall 12. Two pads 31 (not shown in FIGS. 14 and 15) are attached to the lower wall 13, one on each side, to sandwich an area corresponding to the user's nose.

[0058] In the second embodiment, by providing pad 31 on case body 11, the abutment member 67 in image display device 50 of the first embodiment is omitted. Attachment 68 (see FIG. 24) of image display device 50 can be configured to be held in the same position as in the first embodiment, for example, by providing an appropriate fitting structure on the inner surface of housing 55. Attachment 68 may also be configured to be attached to partition wall 58 or holding portion 58a, or to be detachably attached by providing hook-and-loop fasteners on the opposing surfaces of partition wall 58 or holding portion 58a.

[0059] The cover member 32 is made of an appropriate synthetic resin, similar to the case body 11. As shown in FIGS. 17 to 24, the cover member 32 is formed by bending a single plate-like body. The cover member 32 includes a fixed surface portion 34 formed in a rectangular shape and fixed to the inner surface of the left side wall 14, and a cover body 36 connected to the fixed surface portion 34 via a bent portion 35 and formed to a size that can be accommodated inside the case body 11. The bent portion 35 is formed by a groove or the like extending at the boundary position between the fixed surface portion 34 and the cover body 36. A semicircular arc-shaped cutout portion 36a is formed on the upper end side of the cover body 36.

[0060] The cover body 36 is provided so as to be displaceable in a rotational direction around the bent portion 35 as the rotation center position, and such displacement is capable of opening and closing the opening 19 of the case body 11. Specifically, in the state shown in Fig. 23 , the cover body 36 is arranged along the vertical and horizontal directions and fits inside the case body 11, closing most of the opening 19 except for the four corners. In this state, the rear of the lens 60 (toward the viewer in Fig. 23 ) is covered by the cover body 36.

[0061] 23, the cover body 36 can be rotated rearward to be positioned along the front-to-rear direction as shown in FIGS. 21 and 24. In this state, the cover body 36 is retracted from the opening 19 of the case body 11, opening the opening 19 and uncovering the rear of the lens 60 with the cover body 36. The shielding portion 65 (attachment 68) is exposed at the rear of the image display device 50. In this way, the cover member 32 can be switched between a state in which it covers the rear of the lens 60 and a state in which it is retracted from behind the lens 60 by opening and closing the cover body 36.

[0062] When the cover body 36 closes the opening 19 of the case body 11, a block-shaped stopper 38 is provided at a rear adjacent position on the right end side in FIG. 23, which is the tip side of the cover body 36. The stopper 38 prevents the cover body 36 from rotating in the opening direction in the state shown in FIG. 23. Therefore, even when the opening 19 of the case body 11 is hung with the opening 19 facing downward as shown in FIG. 25, the cover body 36 does not open and can maintain the state in which the opening 19 is closed.

[0063] When the cover body 36 is to open the opening 19 of the case body 11 from a closed state, the user applies an external force using a fingertip or the like to pull the cover body 36 rearward. This causes the cover body 36 to bend elastically, and the tip of the cover body 36 moves rearward while rubbing against the stopper 38, allowing the opening operation to be performed.

[0064] Furthermore, when the cover body 36 closes the opening 19 of the case body 11 from an open state, the user simply turns the opening 19 of the case body 11 upward. This causes the tip of the cover body 36 to rotate from an upward state in a direction in which it falls under its own weight, i.e., in a direction in which it closes the opening 19. This rotation in the closing direction is accelerated by the cover body 36's own weight. Therefore, just before the cover body 36 closes the opening 19, the tip of the cover body 36 abuts against the stopper 38, but as the cover body 36 elastically bends and deforms, the tip of the cover body 36 rubs against the stopper 38, and the rotation in the closing direction continues. As the cover body 36 continues to rotate in this manner, the tip of the cover body 36 is positioned forward of the stopper 38, and the cover body 36 closes the opening 19, and this state is maintained by the stopper 38.

[0065] As described above, according to the second embodiment, simply by facing the opening 19 of the case body 11 upward, the opening 19 can be closed by the cover body 36 without touching or operating the cover body 36. As a result, when the opening 19 is facing upward, in which case sunlight can easily enter the lens 60, the cover body 36 can effectively cover the lens 60, thereby better preventing sunlight from entering the lens 60.

[0066] Furthermore, as shown in Figure 25, even if the opening 19 of the case body 11 is facing downward, the stopper 38 can keep the opening 19 closed by the cover body 36, thereby preventing the cover body 36 from being unintentionally opened and dangling.

[0067] The present invention is not limited to the above-described embodiments, and various modifications can be made to the embodiments. In the above-described embodiments, the size, shape, direction, etc. shown in the accompanying drawings are not limited to these, and can be modified as appropriate within the scope of the effects of the present invention. In addition, the present invention can be modified as appropriate without departing from the scope of the object of the present invention.

[0068] For example, the shielding portion 65 can be modified in various ways, such as in shape and position, as long as it performs the above-mentioned function. For example, the shielding portion 65 provided on the rear surface of the plate 64 may be provided on the front surface or both surfaces of the plate 64, or the attachment 68 may be omitted and the shielding portion 65 may be formed by laminating it on the surface of the lens 60 by coating or the like.

[0069] Furthermore, in the first embodiment, the attachment 68 including the shielding portion 65 is held by being sandwiched between the abutting member 67 and the partition wall 58, but the attachment 68 may be attached by fitting or the like to the abutting member 67. In this case, the abutting member 67 may be attached to the opening 19 side of the case body 11, instead of being fitted to the rear end 55c side of the housing 55.

[0070] Furthermore, connection part 26 may be modified as long as it can connect an elongated body such as strap S. For example, connection part 26 may be a hole formed in case main body 11 itself, or a ring member or the like may be provided on case main body 11 so that an elongated body can be connected.

[0071] Furthermore, although the strap S is used as the long body in the above description, the long body may be a belt-like, string-like, or chain-like member, and the length and shape of the long body are not limited.

[0072] Furthermore, the image display device 50 may have a battery built into the main unit 51, and the separate battery unit 52 may be omitted.

[0073] The shape of the housing 55 of the image display device 50 may be other than those in the above-described embodiments, and is not limited as long as it can be accommodated in the case 10.

[0074] Furthermore, the positions at which the rectangular hole 12a and the window 13a of the case body 11 are formed may be changed or may be omitted depending on the configuration of the image display device 50. [Industrial Applicability]

[0075] The present invention relates to an image display device that can prevent damage to the inside of the device due to sunlight. [Explanation of symbols]

[0076] 1: Video display device with case 10: Case 11: Case body 13a: Window section 19:Aperture 23: Light-shielding wall 24: Hole 26: Connection part 32: Cover member 50:Video display device 56: Operation area 58: Partition wall 60: Lens 64: Plate 65: Shielding part 67: Contact member 68a: recessed part S: Strap (long)

Claims

1. An image display device that is used in a state where it is placed close to the user's eyes, The device includes a lens that is placed facing the eye in use, a shielding portion for the lens, and a transparent plate that is placed a predetermined distance away from the lens, the shielding portion allows an image inside the image display device that has passed through the lens to be projected onto the user's eye, and blocks or attenuates sunlight that is incident on the lens, and is formed by being laminated on the plate; The plate has a recess in an area corresponding to the user's nose.

2. An image display device that is used in a state where it is placed close to the user's eyes, The device includes a lens that is placed facing the eye in use, a shielding portion for the lens, and a transparent plate that is placed a predetermined distance away from the lens, the shielding portion allows an image inside the image display device that has passed through the lens to be projected onto the user's eye, and absorbs at least an infrared region of sunlight that is incident on the lens, and is formed by being laminated on the plate; The plate has a recess in an area corresponding to the user's nose.

Images