JP7740657B2 - Video display device - Google Patents

Description

This disclosure relates to an image display device that allows users to view images while holding it close to their face.

Head-mounted displays (hereinafter referred to as "HMDs") have been used in the past, allowing users to view images while placing a goggle-shaped housing against their face. As disclosed in Patent Document 1, HMDs have two convex lenses positioned in accordance with the user's eyes, and a display device located behind the convex lenses.

In such an HMD, for example, the display device is configured to include a liquid crystal panel, and the image on the liquid crystal panel has its optical characteristics adjusted by a convex lens before being projected onto the user's eyes.

Japanese Patent Application Laid-Open No. 2021-100257

However, when the above-mentioned HMD is used outdoors, if sunlight shines on the convex lens, the convex lens will concentrate the sunlight, causing localized heat buildup on the LCD panel and resulting in damage.

Here, one possible way to use an HMD outdoors is to provide a virtual reality experience by showing a past scene from the same location as the current view seen by the user. This allows the user to enjoy comparing the real view with the past view by using the HMD. In such use, when viewing the image on the HMD, the convex lens is covered by the face. However, when removing the HMD from the face to view the real view or carrying the HMD, sunlight is likely to penetrate the convex lens. There has been a desire for an invention that can eliminate the above-mentioned inconveniences even in such situations.

This disclosure was made in light of these issues, and aims to provide an image display device that can prevent damage to the inside of the device due to sunlight.

One aspect of the image display device of the present disclosure is an image display device used in a state where it is close to the user's eye, and comprises a lens that is placed facing the eye when in use, a shielding portion for the lens , and a transparent plate that is placed a predetermined distance from the lens , the shielding portion allowing an image inside the image display device that has passed through the lens to be projected onto the user's eye and blocking or attenuating sunlight that enters the lens , and is formed by being laminated on the plate, and the plate has a recessed portion in an area corresponding to the user's nose.
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.

According to the present disclosure, even in situations where sunlight is incident on the lens, the shielding portion can block the sunlight, preventing 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 situations, the shielding portion can attenuate or absorb the sunlight that enters the lens, preventing the area where the light is concentrated by the lens from becoming too hot, thereby also avoiding damage to the inside of the image display device.

1 is a schematic perspective view of a case-attached image display device according to a first embodiment; 1 is a schematic perspective view of a case and an image display device according to a first embodiment. FIG. 2 is a bottom view of the case and the image display device according to the first embodiment. FIG. 2 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 part of the configuration of the image display device is exploded. 1 is a schematic cross-sectional view for explaining a case-attached image display device according to a first embodiment. FIG. 2 is a front view of the case according to the first embodiment. FIG. 2 is a rear view of the case according to the first embodiment. FIG. 2 is a plan view of a case according to the first embodiment. FIG. 2 is a bottom view of the case-attached image display device according to the first embodiment. FIG. 2 is a side view of the case according to the first embodiment. 8 is a cross-sectional view taken along line AA in FIG. 7. 1A and 1B are diagrams illustrating an example of a state in which the case-attached image display device according to the first FIG. 10 is a schematic perspective view of a case-attached image display device according to a second embodiment. FIG. 10 is a schematic perspective view of a case and an image display device according to a second embodiment. FIG. 10 is a front view of a case according to a second embodiment. FIG. 10 is a rear view of the case according to the second embodiment. FIG. 10 is a plan view of a case according to a second embodiment. FIG. 10 is a bottom view of the case according to the second embodiment. FIG. 10 is a side view of a case according to a second embodiment. 21 is a side view similar to FIG. 20 of the case with the cover member open. FIG. 17 is a cross-sectional view taken along line BB in FIG. 16. FIG. 10 is a rear view of the case-attached image display device according to the second embodiment. FIG. 24 is a rear view similar to FIG. 23 of the case-equipped image display device with the cover member open. 10A and 10B are diagrams illustrating an example of a usage state of a case-attached image display device according to

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

[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.

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

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 shaped like an arc. The housing 55 extends generally in the front-to-rear direction, tapering from front to rear. A cable 53 is connected to the top surface 55a of the housing 55.

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

The housing 55 is formed with an open rear end 55c. As shown in Figure 2, the rear end 55c of the housing 55 is recessed forward at the center on both the left and right sides to accommodate the shape of the user's face. Furthermore, the lower center of the rear end 55c of the housing 55 is further recessed to accommodate the shape of the user's nose.

Figure 4 is a rear view of the case-attached image display device according to the first embodiment. Figure 5 is a rear view similar to Figure 4, with a portion of the image display device exploded. As shown in Figures 4 and 5, a partition wall 58 extending in the vertical and horizontal directions is provided on the rear end 55c side of the housing 55. The partition wall 58 is located on the rear end 55c side of the housing 55.

A pair of lenses 60 are provided side by side on the partition wall 58. The partition wall 58 has a pair of openings that hold 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 Figure 6), with the lenses 60 held via the holding portions 58a. The rear end 55c of the housing 55 is open, so the partition wall 58 and each lens 60 can be exposed at the rear of the housing 55 (toward the viewer in Figures 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 located at a position that corresponds to the recessed portion in the lower center of the rear end 55c of the housing 55.

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

Figure 6 is a cross-sectional schematic diagram for explaining the case-attached video display device according to the first embodiment. Note that Figure 6 omits the battery unit 52, cable 53, and some of the components inside the housing 55. As shown in Figure 6, a video display device 62 is provided inside the housing 55 in front of the lens 60. A liquid crystal display panel in which pixel circuits are arranged in a matrix in the 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, etc., can also be used instead of a liquid crystal display panel. Furthermore, the video display device 62 can be an external terminal device such as a smartphone that is detachably mounted inside the housing 55.

The image display device 50 includes a plate 64 positioned 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 of the housing 55. The shielding portion 65 is formed by laminating it onto the rear surface of the plate 64. As the shielding portion 65 is thus integrated with the plate 64, this integrated structure can be used as an attachment 68. This allows the attachment 68 to be retrofitted to the image display device 50 to provide the functions of the shielding portion 65 described below. Furthermore, the attachment 68 can be easily attached and detached from the image display device 50, facilitating maintenance and replacement of the attachment 68.

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, but from the standpoint of strength and cost, it is preferable to make the plate 64 from acrylic resin or polycarbonate.

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 abuts against the rear surface of the attachment 68 while 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 via the connecting portion 67b, as long as it can be attached to the rear of the housing 55. For example, as shown in FIG. 4, hook-and-loop fasteners 69 (shown by two-dot chain lines) may be provided on each of the opposing surfaces of the cushion member 67a and the top wall 12, left side wall 14, and right side wall 15 of the case 10, which will be described later, and the abutment member 67 may be detachably attached to the rear of the housing 55 using these 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 the attachment 68 and the partition wall 58, and the attachment 68 may be detachably attached to the partition wall 58 using these hook-and-loop fasteners 70.

Returning to Figure 5, in the attachment 68 including the plate 64, a recess 68a is formed in a position that corresponds to the recess 58b of the partition wall 58. Furthermore, in the abutment member 67, a recess 67c is formed in a position that corresponds to 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 abutment member 67 are formed in an area that corresponds to the user's nose. By forming the recess 68a of the attachment 68, the recess 67c of the abutment member 67 passes through the recess 68a and is received in the recess 58b of the partition wall 58.

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 images inside the image display device 50 that have 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 are each explained below.

When a user views an image on the image display device 50, which is in a state where the first function is being performed, the user's eyes are close to the lens 60, and the rear end 55c 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 the image on the image display device 62, which represents the 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. In this way, the shielding portion 65 allows the light of the image to be projected onto the user's eyes, thereby performing the first function. In other words, when the image display device 50 is in use, the shielding portion 65 is configured to have a 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.

An example of a situation in which the second function is exerted is when 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.

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

Furthermore, the shielding portion 65 may be configured to absorb sunlight instead of, or in addition to, the above-mentioned reflection and attenuation of sunlight. By performing this 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 light is concentrated on the video display device 62 from becoming too hot, thereby performing the second function.

The attachment 68, in which the shielding portion 65 is laminated and integrated onto the plate 64, forms a structure known as a one-way mirror, half mirror, or magic mirror.

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

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 concentration of light on the image display device 62 through the lens 60. Specific examples of the light-reflecting layer include 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 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.

The heat ray absorbing layer of the shielding portion 65 is a layer capable of absorbing infrared rays, and may be, 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 infrared absorbing agents that can be used 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, as well as organic infrared absorbing agents such as phthalocyanines, naphthalocyanines, and anthraquinones.

Preferably, the transparent film substrate of the shielding portion 65 is a polyester resin film. Other examples include films of various resins such as vinyl chloride resin film and polyolefin resin film, or laminate films of these.

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 A-A 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.

As shown in Figures 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, as well as a front wall 17 located slightly rearward of the front ends of these. The case body 11 may also be made of paper, wood, or a light metal such as aluminum.

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

The front end (other end) of the case body 11 is closed by a front wall 17. The front wall 17 is curved, with the center bulging forward from both ends in the left-right direction. Here, the battery unit 52 described above has a curved shape, and the front wall 17 is curved to match the curve of the battery unit 52. This reduces the amount of free space in the case body 11 and improves stability by reducing the amount of space that the housing 55 and battery unit 52 need to move when housed inside the case body 11.

Extending pieces 17a are formed on both the left and right ends of the front wall 17 (the right side is not shown in Figures 1 and 2). The extending pieces 17a are bent to fit along the inner surfaces of the left and right walls 14 and 15, and are attached to the left and right walls 14 and 15 via grommets 25, which will be described later. The front wall 17 is also joined to the inner surfaces of the upper and lower walls 12 and 13 via L-shaped piece members 21.

A rectangular hole 12a elongated in the front-to-rear direction is formed in the upper wall 12 of the case body 11. The cable 53, which is folded inside the case body 11, is fitted into the rectangular hole 12a.

As shown in Figure 3, the case body 11 has a slot-shaped window 13a extending in the left-right direction in the bottom wall 13. The window 13a is formed to correspond to the 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 13a (see Figure 10). A reinforcing wall 22 is provided in the left-right central portion of the bottom wall 13, extending in the front-to-rear direction. The reinforcing wall 22 is divided into two parts so as not to overlap with the window 13a.

As shown in Figures 9 and 10, the rear end sides of the upper wall 12 and 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 rear regions of the left side wall 14 and right side wall 15 of the case body 11 are formed so that they 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 (one end) of the case body 11, in the direction in which the pair of lenses 60 (see Figure 5) are aligned, and the light-shielding walls 23 block light from entering the inside of the case body 11 from the outside. The rear end center of the lower wall 13 is recessed further to accommodate the shape of the user's nose.

Hole 24 is formed in the front end (other end) of the left side wall 14 and right side wall 15 of the case body 11. More specifically, the hole 24 is formed immediately adjacent to the front end of the left side wall 14 and right side wall 15, or with a slight gap from the front end. Each hole 24 is formed by providing a grommet 25 in a hole (not shown) formed directly in the front end of the left side wall 14 and right side wall 15. The hole 24 and grommet 25 form a connection portion 26, and the case body 11 has two connection portions 26 located on the left and right sides. Each connection portion 26 is located in the vertical center of the left side wall 14 and right side wall 15. The grommet 25 penetrates the extension piece 17a of the front wall 17. Therefore, the extension piece 17a functions to secure the left and right sides of the front wall 17 and also functions as a reinforcing piece around the grommet 25.

As shown in Figure 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 these connection fittings Sa are inserted into holes 24 in the connection part 26. The connection fittings Sa are not particularly limited, but may be formed from a snap hook, a D-ring, a carabiner, or a combination thereof.

When a user carries or transports the case-attached image display device 1, the user holds the strap S by passing it around the shoulder or neck. 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.

According to this first embodiment, when a user views an image on the image display device 50, they hold the case 10 housing the image display device 50 with both hands and bring the abutment member 67 on the opening 19 side into contact with their face. This brings the lens 60 close to the user's eyes, and the image displayed on the image display device 62 is projected onto the user's eyes through the lens 60.

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 unit (not shown) such as a proximity sensor, which detects whether the user's face is close to the detection unit, and controls the image display device 62 to turn on or off depending on the detection result.

In addition, light-shielding walls 23 are formed on both the left and right sides of the case body 11, blocking light from entering the inside of the case body 11, thereby maintaining a dark interior of the case 10.

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 prevents 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.

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

In this state, as shown in FIG. 13, the connection portion 26 side, which was previously the front of the case 10, is now positioned vertically upward, with the opening 19 side facing 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. This also prevents sunlight from entering the lens 60, and prevents damage to the image display device 62 and other components caused by light being concentrated by the lens 60.

In this way, providing the connection part 26 on the case body 11 facilitates hanging and holding with the strap S, and in turn allows the lens 60 to be carried with its position facing downward, preventing damage from sunlight.

In addition, the connection section 26 is provided on the front end of the case body 11, opposite the opening 19, making it easier to keep the lens 60 facing downward when the case 10 is suspended by the strap S. Furthermore, since the connection sections 26 are provided in two locations, on the left and right, both longitudinal ends of the strap S can be attached to make it easier to hold the case in a suspended position.

Furthermore, the connection portion 26 has a hole 24, which makes it easy to connect to the connection fitting Sa, increasing its versatility for use with various long objects such as straps S.

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-attached 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 a case with the cover member opened, similar to FIG. 20. FIG. 22 is a cross-sectional view taken along line B-B in FIG. 16. FIG. 23 is a rear view of a case-attached image display device according to the second embodiment. FIG. 24 is a rear view of a case-attached 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.

As shown in Figures 14 to 17, the second embodiment differs from the first embodiment in that 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.

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 lower wall 13 of the case body 11. A single pad 31 is attached to the upper wall 12, and both ends extend out so that they are located near the left and right ends of the upper wall 12. Two pads 31 (not shown in Figures 14 and 15) are attached to the lower wall 13, one on each side, sandwiching the area corresponding to the user's nose.

In the second embodiment, by providing a pad 31 on the case body 11, the abutment member 67 of the image display device 50 of the first embodiment is omitted. The attachment 68 of the image display device 50 (see Figure 24) 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 the housing 55. The attachment 68 may also be configured to be attached to the partition wall 58 or the holding portion 58a, or to be detachably attached by providing a hook-and-loop fastener on the opposing surface of the partition wall 58 or the holding portion 58a.

The cover member 32, like the case body 11, is made of an appropriate synthetic resin. As shown in Figures 17 to 24, the cover member 32 is formed by bending a single plate. The cover member 32 comprises a rectangular fixing surface portion 34 that is fixed to the inner surface of the left side wall 14, and a cover body 36 that is connected to the fixing surface portion 34 via a bending portion 35 and is sized to fit inside the case body 11. The bending portion 35 is formed by a groove or the like that extends to the boundary between the fixing 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.

The cover body 36 is movable in a rotational direction around the bent portion 35, and this movement opens and closes the opening 19 of the case body 11. Specifically, in the state shown in Figure 23, the cover body 36 is positioned 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 cover body 36 covers the rear of the lens 60 (toward the viewer in Figure 23).

Furthermore, the cover body 36 can be rotated rearward from the state shown in FIG. 23 to position the cover body 36 in the front-to-rear direction as shown in FIGS. 21 and 24. In this state, the cover body 36 retreats 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 then 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 retreats from behind the lens 60 by opening and closing the cover body 36.

When the cover body 36 closes the opening 19 of the case body 11, a block-shaped stopper 38 is provided adjacent to the rear of the tip of the cover body 36 on the right end side in Figure 23. The stopper 38 prevents the cover body 36 from rotating in the opening direction in the state shown in Figure 23. Therefore, even when the opening 19 of the case body 11 is hung facing downward as shown in Figure 25, the cover body 36 does not open and the opening 19 can be maintained closed.

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 elastically bend and deform, and the tip of the cover body 36 rubs against the stopper 38 while moving rearward, allowing the opening operation to be performed.

Furthermore, when the cover body 36 closes the opening 19 of the case body 11 from an open state, the user simply points 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 the stopper 38, but as the cover body 36 elastically flexes 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, so that the cover body 36 closes the opening 19, and this state is maintained by the stopper 38.

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 with the cover body 36 without touching or operating the cover body 36. This allows the cover body 36 to effectively cover the lens 60 when the opening 19 is facing upward, which makes it easier for sunlight to enter the lens 60, and better prevents sunlight from entering the lens 60.

Furthermore, as shown in Figure 25, even if the opening 19 of the case body 11 is facing downward, the stopper 38 allows the cover body 36 to maintain a closed state of the opening 19, preventing the cover body 36 from being unintentionally opened and dangling.

The present invention is not limited to the above-described embodiments and can be modified in various ways. 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. Other modifications can be made as appropriate within the scope of the purpose of the present invention.

For example, the shielding portion 65 can be modified in various ways, such as its 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 using a coating or the like.

In addition, in the first embodiment, the attachment 68 including the shielding portion 65 was held between the abutment member 67 and the partition wall 58, but the attachment 68 may also be attached to the abutment member 67 by fitting it to the abutment member 67, etc. In this case, instead of being fitted to the rear end 55c of the housing 55, the abutment member 67 may be attached to the opening 19 side of the case body 11.

Furthermore, the connection portion 26 may be modified as long as it is capable of connecting a long object such as a strap S. For example, the connection portion 26 may be a hole formed in the case body 11 itself, or a ring member or the like may be provided on the case body 11 so that a long object can be connected.

Furthermore, while the description has been given of a case in which a strap S is used as the elongated body, the elongated body can be a belt-like, string-like, or chain-like member, and the length and shape of the elongated body are not limited.

Furthermore, the image display device 50 may have a built-in battery in the main unit 51, thereby omitting the separate battery unit 52.

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

Furthermore, the position of the rectangular hole 12a and window 13a in the case body 11 may be changed or omitted depending on the configuration of the image display device 50.

The present invention relates to an image display device that can prevent damage to the inside of the device due to sunlight.

1: Case-attached image display device 10: Case 11: Case body 13a: Window portion 19: Opening 23: Light-shielding wall body 24: Hole 26: Connection portion 32: Cover member 50: Image display device 56: Operation area 58: Partition wall 60: Lens 64: Plate 65: Shielding portion 67: Contact member 68a: Recessed portion S: Strap (long body)

Claims (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 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 . 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 .