JP2018133768A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a precision component to a casing to be supported by a method other than a partition rib to advance miniaturization of an image display device.SOLUTION: In an image display device 30 attached to glasses 10, a display panel 55 is arranged inside a casing 32 and displays an image to be visually observed by a user of the glasses 10. A control board 59 is arranged inside the casing 32 and controls the image. A flexible cable 56 electrically connects the display panel 55 to the control board 59 inside the casing 32. The flexible cable 56 is bent at least once and has a shape having a portion lying between the display panel 55 and control board 59, and thereby supports the control board 59 in a floating manner with respect to the display panel 55.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an image display device supported by eyeglasses.

  Among image display devices, there is a head-mounting display type that is used by being mounted on the head and displays an image in front of the user. The image display device is widely used not only for operations in which both hands are occupied, for example, as in surgery, but also for game machines that make full use of virtual reality.

  Patent Document 1 is disclosed as a technique related to the image display device. The image display device of Patent Document 1 has a structure in which a casing that houses a display panel is supported by a lens of eyeglasses. A user wearing the glasses can view an image displayed on the display panel by viewing the display panel in the housing through the lens of the glasses.

JP 2006-54618 A

  Since the head mounting display type image display device is mounted on the head, it is desired to reduce the weight and size as much as possible.

  In the image display device of Patent Document 1, a plurality of precision components such as a display panel and a control board (conversion board) for controlling an image displayed on the display panel are provided in each of two casings corresponding to spectacle lenses. Is housed. Since a physical load applied to these precision parts causes damage and failure of the precision parts, in Patent Document 1, each precision part is positioned in the casing by a rib provided in the casing. And supported and fixed to the casing.

  However, in the method using the partition rib, a gap corresponding to at least the thickness of the rib is formed between the precision parts. Therefore, the casing must be increased in size, and there is a limit to proceed with downsizing the image display device.

  The present invention has been made in view of such a point, and an object thereof is to support and fix precision parts to a casing by a method other than a rib and to promote downsizing of an image display device.

  The first invention comprises a casing supported by the glasses, a display panel arranged in the casing inside the casing and displaying an image for a user of the glasses to view, and arranged inside the casing, A control board for controlling an image; and a flexible wiring part for electrically connecting the display panel and the control board inside the casing, wherein the wiring part is bent at least once, and the display panel The image display apparatus is characterized in that the control board is floatingly supported with respect to the display panel by having a shape having a portion interposed between the control board and the control board.

  Here, the flexible wiring portion is bent at least once and has a shape having a portion interposed between the display panel and the control board. With this shape of the wiring portion, the control board is floatingly supported by the elastic force of the wiring portion with respect to the display panel. As a result, the position of the control board is appropriately determined according to the elastic force of the wiring portion without providing ribs for positioning and supporting and fixing the display panel and the control board inside the casing. Therefore, the size of the casing can be reduced by the amount that the ribs are not provided. Furthermore, since the flexible wiring portion supports the control board in a floating manner with respect to the display panel, the possibility that the control board directly contacts the display panel is low. Therefore, it is possible to suppress the physical load on the control board and the display panel due to the direct contact between the control board and the display panel, and the heat generated in the control board is directly transmitted to the display panel and affects the display panel. Can also be avoided.

  According to a second aspect of the present invention, in the first aspect, the casing is formed with an opening, and at least the main body that accommodates the display panel, and the control that is exposed from the opening when the main body is mounted. A lid portion capable of shielding the substrate, and when the lid portion is attached to the main body portion, the wiring portion causes the control board to be moved by the action of the force on the display panel side by the lid portion. It is an image display device characterized by energizing towards a lid part.

  Here, the control board is in a state of being pushed to the display panel side by the lid part attached to the main body part. Further, since the force on the display panel side by the lid portion is transmitted to the wiring portion connected to the control board, the control substrate is biased toward the lid portion by the elastic force of the wiring portion. Thereby, the position in the casing of a control board is determined in the position where the force from a cover part and the force from a wiring part balance. Therefore, it is not necessary to provide a rib for positioning the control board inside the casing.

  According to a third invention, in the second invention, the main body portion and the lid portion are provided for locking the main body portion and the lid portion when the lid portion is attached to the main body portion. An image display device characterized in that a claw portion and an engaging recess are formed.

  This eliminates the need for separate parts such as screws when assembling the casing. Accordingly, the weight of the image display device can be reduced, and the assembling work of the casing can be simplified.

  According to a fourth invention, in the second or third invention, the control board is positioned in parallel with the surface of the display panel when the lid is mounted on the main body. It is a screen display device.

  If the control board is positioned perpendicular to the display panel, the size of the casing increases accordingly. In contrast, here, the control board and the display panel are parallel to each other inside the casing. Therefore, the size of the casing can be reduced as compared with the case where the control board and the display panel are not parallel, and the image display device can be reliably reduced in size.

  In a fifth aspect based on any one of the second aspect to the fourth aspect, the wiring portion extends along the surface of the display panel on the lid portion side with respect to the display panel. And a second extending portion extending along the thickness direction of the display panel, and the second extending portion is formed between the display panel and the inner surface of the casing. The image display device is characterized by being positioned so as to be inserted into the gap formed.

  Thus, the position of the wiring part in the casing is fixed by inserting the second extending part of the wiring part into the gap between the display panel and the inner surface of the casing. Along with this, the position inside the casing of the control board that is floatingly supported by the wiring portion is also easily determined.

  According to the present invention, the size of the casing can be reduced. In addition, the direct contact between the control board and the display panel suppresses the physical load on the control board and the display panel, and the heat generated on the control board is directly transmitted to the display panel, affecting the display panel. Can also be avoided.

It is an external view of the image display apparatus with which the spectacles were mounted | worn. It is a figure showing the external appearance of the image display apparatus not mounted | worn with spectacles. It is an exploded view of the main components of the image display apparatus corresponding to one of the lenses of spectacles. It is sectional drawing of the part which removed the flame | frame from the image display apparatus corresponding to one side of the lens of spectacles. It is an external view of the part which removed the frame and the cover part from the image display apparatus corresponding to one side of the lens of spectacles. It is a top view of a wiring part.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

<Embodiment>
<Overview>
The image display device 30 according to the present embodiment is a so-called head mounting display type image display device.

  Specifically, as shown in FIG. 1, the image display device 30 is attached to, for example, eyeglasses 10 worn by an operator (user) in endoscopic surgery, and the operator (user) Used to confirm the endoscope image. A display panel 55, which will be described later, is provided inside the image display device 30, and an image of an endoscope is displayed on the display panel 55. The surgeon (user) puts on the eyeglasses 10 to which the image display device 30 is attached and looks into the inside of the image display device 30 from the end side of the cylindrical portion 34 of the casing 32 in the image display device 30 ( The endoscope image displayed on the display panel 55 can be confirmed.

  In the following, for convenience of explanation, expressions representing respective directions such as “up”, “down”, “left”, “right”, “front”, and “back” are used as appropriate. These expressions represent each direction when the user is using the glasses 10 with the image display device 30 mounted, as shown in FIGS. 1 and 2. In particular, in a state where the user uses the image display device 30, the left direction of the user is “left”, the right direction of the user is “right”, and the direction in which the image display device 30 faces the user side is “front”. It is said.

  Here, the spectacles 10 include a frame 11 and a pair of left and right lenses 22 attached to the frame 11. The frame 11 has a configuration in which a rim 12 that covers the outer peripheral edge of each lens 22 and fixes each lens 22 is connected by a bridge 13. A temple 14 extends from each of the left end of the rim 12 located on the left side and the right end of the rim 12 located on the right side, and the tip of each temple 14 has a shape that can be put on the user's ear. ing.

  Each lens 22 of the spectacles 10 is formed with a through hole 22 a for allowing the cylindrical portion 34 of the casing 32 in the image display device 30 to pass through with a gap in the thickness direction of the lens 22. The frame 34a is attached to the tip of the cylindrical portion 34 in a state where the cylindrical portion 34 is disposed in the glasses 10 so as to penetrate the through hole 22a from the back side to the front side of the spectacles 10. The image display device 30 is attached to the glasses 10. Further, although not shown, the image display device 30 is provided with a clip-shaped fixing member so as to correspond to the bridge 13 of the frame 11 in the glasses 10. The image display device 30 is also fixed to the glasses 10 by the fixing member sandwiching the bridge 13.

<Configuration of image display device>
The image display device 30 described above mainly includes a casing 32, a connecting portion 43, a display unit 53, a flexible cable 56 (corresponding to a wiring portion), and a control board 59, as shown in FIGS.

-Casing-
The casing 32 accommodates the precision components (the display unit 53, the control board 59, etc.) which comprise the image display apparatus 30 inside. The casing 32 is made of resin or the like, and two casings 32 are provided corresponding to the pair of left and right lenses 22 of the glasses 10. The casing 32 is supported by the glasses 10 via the connecting portion 43 and is positioned corresponding to each lens 22 of the glasses 10.

  FIG. 3 shows a casing 32 corresponding to one of the two lenses 22 in the eyeglasses 10 in the image display device 30 and an exploded view thereof.

  Specifically, as shown in FIGS. 2 and 3, the casing 32 includes a main body portion 33, a lid portion 37, and an upper cover 41. Of the casing 32, the main body portion 33 constitutes the front side of the casing 32, and the lid portion 37 constitutes the back side of the casing 32. The upper cover 41 is for covering the upper parts of the main body 33 and the lid 37 assembled and integrated.

  The main body 33 includes a cylindrical cylindrical portion 34 projecting in the front direction (that is, the user side) and a base portion 35 that is formed continuously with the cylindrical portion 34 and has a box-like outer shape. As shown in FIG. 4, an adjustment lens 51 and a magnifying lens 52 are attached to the inner peripheral surface of the cylindrical portion 34, and these lenses 51 and 52 are accommodated inside the cylindrical portion 34. A mechanism for adjusting the attachment positions of the adjustment lens 51 and the magnifying lens 52 is provided inside the cylindrical portion 34 so that the user can easily view the image displayed on the display panel 55. The inside of the base part 35 is hollow, and the connecting surface of the base part 35 with the cylindrical part 34 (that is, the surface located on the front side of the base part 35) has the same diameter as the cylindrical part 34. About the hole is formed. Thereby, the inside of the base part 35 and the inside of the cylindrical part 34 are communicated. The surface on the back side of the base part 35 is open as shown in FIG. 3 (opening 33a). As shown in FIG. 4, the display unit 53 is accommodated inside the base unit 35.

  In FIG. 4, the upper cover 41 is omitted for simplification of illustration.

  The display unit 53 is connected to a flexible cable 56 and a control board 59 as shown in FIG. Among these, as shown in FIG. 5, the main body 33 reliably accommodates the display unit 53, but cannot reliably accommodate the flexible cable 56 and the control board 59. It is in a state exposed from the opening 33a.

  2 and 3, the lid portion 37 is formed integrally with the lid main body 38 for covering the opening 33a of the main body portion 33 and the lid main body 38, and protrudes from the lid main body 38 to the back side. It is comprised by the protrusion part 39 for the screw which has.

  The lid body 38 is generally box-shaped, but a part of the surface constituting the front surface and the surface constituting the upper surface are open. In the present embodiment, the base portion 35 in the main body portion 33 is attached to the lid main body 38 from the opening side of the lid main body 38 to the inner side of the lid main body 38. At that time, as shown in FIG. 2, the inner dimension of the lid body 38 is slightly larger than the outer dimension of the base part 35 so that the outer surface of the side surface of the base part 35 is generally covered by the side surface of the lid body 38. Is formed. That is, when the lid portion 37 is attached to the main body portion 33, the outer surface of the lid main body 38 is exposed to the outside.

  As shown in FIG. 3, the screw protrusion 39 protrudes from the lid main body 38 to the back side and extends in the vertical direction. The screw protrusion 39 is formed with one screw hole 39a corresponding to the size of the screw 45 (see FIG. 2). Further, two screw holes 39b corresponding to the size of the screw 41a are formed on the upper surface of the lid main body 38 so as to sandwich the screw hole 39a of the screw protrusion 39 in the left-right direction. Both of the screw holes 39a and 39b are opened upward from the fixing screw protrusion 39 and the lid main body 38, respectively. In this embodiment, the diameter of the screw hole 39a is larger than the diameter of the screw hole 39b.

  In particular, in the present embodiment, as shown in FIG. 3, an engaging claw portion 35 a is formed on the base portion 35 of the main body portion 33, and an engaging concave portion 38 a is formed on the lid main body 38 of the lid portion 37. Yes. The engaging claw portion 35 a and the engaging recess 38 a are formed at positions corresponding to each other on the side surface of the base portion 35 and the side surface of the lid main body 38 that overlap each other when the lid portion 37 is mounted on the main body portion 33. Yes. When the lid portion 37 is attached to the main body portion 33, the engaging claw portion 35a is engaged with the engaging concave portion 38a in a state where the opening portion of the lid portion 37 and the opening portion 33a of the main body portion 33 are abutted with each other. Thus, the main body 33 and the lid 37 are locked. As a result, the main body portion 33 and the lid portion 37 are integrally assembled to form the casing 32.

  Thus, when the lid part 37 is mounted on the main body part 33, the flexible cable 56 and the control board 59 exposed from the opening 33a of the main body part 33 (see FIG. 5) are shielded by the lid part 37. It becomes. Then, the upper cover 41 is disposed so as to cover the upper portions of the main body portion 33 and the lid portion 37, and screws 41 a are fitted into the respective screw holes 39 b from above the upper cover 41 via the upper cover 41. As a result, not only the display unit 53 but also the flexible cable 56 and the control board 59 are accommodated in the casing 32.

-Connecting part-
The connecting portion 43 is for connecting the two casings 32 and extends mainly in the left-right direction as shown in FIGS. 1 and 2. Similar to the casing 32, the connecting portion 43 is made of resin, for example.

  As shown in FIG. 2, one long hole 43 a penetrating vertically is formed in the connecting portion 43 in the vicinity of the left end portion and the right end portion. A screw 45 is inserted into the long hole 43 a from above, and the screw 45 is screwed into the screw hole 39 a of each casing 32. Thereby, each casing 32 is fixed to the connecting portion 43. Here, the case where the size of the screw 45 is larger than the screw 41a is illustrated.

  In the present embodiment, each long hole 43a has an elongated shape in the left-right direction. This is because the position of the casing 32 is adjusted in the left-right direction so that the cylindrical portion 34 of the casing 32 matches the position of the eyes of the user.

−Display unit−
One display unit 53 is provided corresponding to each casing 32, and is arranged inside the main body 33 of each casing 32 as shown in FIG. 5. The display unit 53 includes a display unit main body 54 and a display panel 55.

  As shown in FIG. 3, the display unit main body 54 is a part necessary for projecting a screen on the display panel 55 inside a resin-like casing having a box shape (for example, an electrode or a power supply for applying voltage). Is contained.

  The display panel 55 is a display that displays an image to be viewed by the user of the glasses 10 and has a rectangular shape in plan view. In general, there are organic EL displays, liquid crystal displays, plasma displays, and the like as display types. However, since the image display device 30 according to the present embodiment is a head mounting display type, the display panel 55 is small and light. Is desirable. As an example, the display panel 55 can employ an organic EL display that does not require a backlight and can be reduced in thickness and weight.

-Flexible cable-
The flexible cable 56 electrically connects the display panel 55 and the control board 59 inside the casing 32. The flexible cable 56 is a wiring conductor that has a certain degree of flexibility and can be bent repeatedly. For example, the flexible cable 56 is configured by sandwiching a flexible conductive material such as a copper foil between heat-resistant resin materials such as polyimide.

  In particular, the flexible cable 56 according to the present embodiment has a structure bent at least once as shown in FIG. 3 to FIG. 5. For details, see “<Arrangement Structure of Flexible Cable and Control Board>”. "

-Control board-
The control board 59 is a printed circuit board on which a control circuit for performing image control displayed on the display panel 55 is mounted, and is disposed inside the casing 32. Similar to the display panel 55, the control board 59 has a rectangular shape in plan view, and is connected to the flexible cable 56 via a connector 59a as shown in FIGS. The control board 59 is connected to the flexible cable 56 in the vicinity of one of the four sides of the control board 59.

  When the lid portion 37 is attached to the main body portion 33, the plane of the control board 59 is connected to the display panel 55 via the flexible cable 56 in a state where each side of the control board 59 corresponds to each side of the display panel 55 in plan view. Located parallel to the surface.

  The control board 59 receives an image signal such as a video signal or an RGB signal sent from the outside of the image display device 30 via the cable 63 (see FIG. 1), and displays an image based on the image signal on the display panel 55. To display.

<Arrangement structure of flexible cable and control board>
Next, the arrangement structure of the flexible cable 56 and the control board 59 inside the casing 32 will be described in detail.

  As shown in FIGS. 4 and 5, the flexible cable 56 according to the present embodiment is bent at a plurality of locations and is interposed between the display panel 55 and the control board 59 (a first extending portion 57 described later). It has the shape which has. With this shape, the flexible cable 56 supports the control board 59 in a floating manner with respect to the display panel 55.

  Here, how the flexible cable 56 is bent will be described with reference to FIGS. 4 and 6. FIG. 6 is a plan view of the flexible cable 56 before being bent. In the drawing, the bent portions of the flexible cable 56 are indicated by broken lines A to C and alternate long and short dash lines D to F. Symbols A to F shown on the flexible cable 56 in FIG. 4 correspond to the broken lines A to C and the alternate long and short dash lines D to F in FIG. 6.

  As shown in FIG. 6, the flexible cable 56 before being bent has a shape that is thin but elongated. In FIG. 6, of each end portion of the flexible cable 56, a connection portion with the display panel 55 is shown as one end portion 56 a and a connection portion with the connector 59 a of the control board 59 is shown as the other end portion 56 b. The width of the one end portion 56a of the flexible cable 56 is approximately the same as or slightly narrower than the length of one side of the display panel 55 that is the connection partner, and the width of the other end portion 56b of the flexible cable 56 is the width of the connector 59a that is the connection counterpart. Same as or slightly narrower.

  When the display area of the display panel 55 is located on the front side of the drawing as shown in FIG. 6, the flexible cable 56 extends from one end 56 a to the other end 56 b at points A, B, and C in FIG. 6. Valley folding is performed along broken lines A to C, and mountain folding is performed along alternate long and short dash lines D to F in FIG. 6 at points D, E, and F. 6 are directions substantially perpendicular to the width direction of the flexible cable 56, that is, the extending direction of the flexible cable 56 (the direction from the one end portion 56a toward the other end portion 56b). Can be defined as a line along By bending in this way, the flexible cable 56 has a shape as shown in FIGS.

  As shown in FIG. 4, when the lid portion 37 is attached to the main body portion 33, the portion from the point A to the point B in the flexible cable 56 faces the display panel 55 from the display panel 55 side to the control board 59 side. The part which extends is comprised. A portion from the point B to the point C in the flexible cable 56 constitutes a first extending portion 57 extending along the surface of the display panel 55 and the plane of the control board 59 on the lid 37 side of the display panel 55. A portion from the point C to the point F constitutes a second extending portion 58 that extends along the thickness direction of the display unit 53. The second extending portion 58 is located in a gap 61 formed between the display panel 55 and the inner surface of the casing 32 so as to be inserted from the base portion 35 side to the cylindrical portion 34 side. In the present embodiment, the gap 61 is constituted by the outer surface of the display unit main body 54 of the display unit 53 and the inner surface of the base unit 35 in the main body unit 33 of the casing 32 as shown in FIG.

  Specifically, as shown in FIG. 3, positioning ribs 35 b are formed in the vicinity of the upper and lower end portions of the inner surface of the base portion 35 in the main body portion 33. The positioning rib 35b is for determining the arrangement position of the display unit 53 inside the main body 33. The display unit 53 is inserted into the main body 33 so as to be sandwiched between positioning ribs 35b provided on the top and bottom. Accordingly, the display unit 53 is fixed inside the main body 33 in a state where the upper surface and the lower surface of the outer surface of the display unit main body 54 are not in contact with the upper and lower end portions inside the main body 33. Therefore, the gap 61 is formed between the outer surface of the display unit main body 54 and the upper and lower ends of the inner surface of the base unit 35.

  In particular, as shown in FIG. 5, one end 56a of the flexible cable 56 is connected at one side of the display panel 55, and the other end 56b of the flexible cable 56 is at the other side of the display panel 55 facing the one side. And connected to the connector 59a of the control board 59. The gap 61 is formed on the other side. That is, it can be said that the connection portion of the flexible cable 56 to the display panel 55 and the insertion position of the second extending portion 58 of the flexible cable 56 are located with the display panel 55 in a plan view of the display panel 55. .

  Specifically, in the second extending portion 58, the portion from point C to point D and the portion from point E to point F in FIG. 4 are along the thickness direction of the display panel 55 (display unit 53). It can be said that the portion extending from the point D to the point E is closest to the cylindrical portion 34 among the portions of the flexible cable 56 and is located at the deepest portion in the insertion direction of the flexible cable 56.

  The casing 32 according to the present embodiment is not provided with any support member such as a rib or a screw for supporting and fixing the control board 59 inside the casing 32, and the control board 59 is as described above. It is connected to and supported by a flexible cable 56 having a bent shape. The flexible cable 56 has a bent shape as described above in addition to the material of the cable itself, thereby functioning as an elastic support member for the control board 59 and floatingly supporting the control board 59 in the thickness direction of the display unit 53. Specifically, when the lid portion 37 is attached to the main body portion 33, the plane of the control substrate 59 on the lid portion 37 side contacts the lid portion 37, and the control substrate 59 is brought into contact with the display panel 55 side by the lid portion 37. Force (ie, a force pushing from the back side to the front side in FIG. 4) acts. This force is also transmitted to the flexible cable 56. Then, the flexible cable 56 biases the control board 59 toward the lid portion 37 side by the action of the force.

  As a result, the control board 59 does not directly contact the display panel 55 and is located in the space between the lid portion 37 and the display panel 55 in the casing 32. Therefore, a physical load caused by the control board 59 directly contacting the display panel 55 is less likely to be applied to the display panel 55 and the control board 59. In addition, heat generating components such as capacitors and resistors are mounted on the control board 59, but the first extending portion 57 of the flexible cable 56 is located between the control board 59 and the display panel 55. The heat generated by these components is not easily transmitted directly to the display panel 55.

  In particular, the control board 59 is supported (floating support) at a position between the lid portion 37 and the display panel 55 where the force applied by the lid portion 37 and the urging force of the flexible cable 56 are balanced. That is, the position of the control board 59 inside the casing 32 is naturally determined by force balance without providing a fixing support means such as a rib.

<Effect>
In this embodiment, as shown in FIGS. 3 and 4, the flexible cable 56 is bent at least once and has a portion (first extending portion 57) interposed between the display panel 55 and the control board 59. It has a shape. With this shape of the flexible cable 56, the control board 59 is floatingly supported by the elastic force of the flexible cable 56 with respect to the display panel 55. Accordingly, the position of the control board 59 is appropriately determined according to the elastic force of the flexible cable 56 without providing a rib or the like for positioning and supporting and fixing the display panel 55 and the control board 59 inside the casing 32. Therefore, the size of the casing 32 can be reduced by the amount that the ribs are not provided. Furthermore, since the flexible cable 56 supports the control board 59 in a floating manner with respect to the display panel 55, the possibility that the control board 59 directly contacts the display panel 55 is low. Therefore, it is possible to suppress physical load on the control board 59 and the display panel 55 due to direct contact between the control board 59 and the display panel 55, and heat generated in the control board 59 is directly transmitted to the display panel 55 for display. The influence on the panel 55 can also be avoided.

  Specifically, the casing 32 includes a main body portion 33 and a lid portion 37 attached to the main body portion 33. The control board 59 is pushed to the display panel 55 side by the lid part 37 attached to the main body part 33. Further, since the force toward the display panel 55 by the lid portion 37 is transmitted to the flexible cable 56 connected to the control board 59, the control board 59 is biased toward the lid portion 37 by the elastic force of the flexible cable 56. It becomes a state. Thereby, the position of the control board 59 in the casing 32 is determined at a position where the force from the lid portion 37 and the urging force from the flexible cable 56 are balanced. Therefore, it is not necessary to provide a rib or the like for positioning the control board 59 inside the casing 32.

  Further, in the present embodiment, the engaging claw portion 35 a is formed in the main body portion 33, and the engaging recess 38 a is formed in the lid portion 37. When the engaging claw portion 35a and the engaging concave portion 38a are engaged, the main body portion 33 and the lid portion 37 are locked. Therefore, when the casing 32 is assembled, other parts such as screws are not required. Therefore, the image display device 30 can be reduced in weight, and the assembly work of the casing 32 can be simplified.

  If the control board 59 is positioned perpendicular to the display panel 55 inside the casing 32, the size of the casing 32 increases accordingly. On the other hand, in the present embodiment, the control board 59 and the display panel 55 are parallel within the casing 32. Therefore, the size of the casing 32 can be reduced as compared with the case where the control board 59 and the display panel 55 are not parallel, and the image display device 30 can be reliably reduced in size.

  Further, in the present embodiment, the position of the flexible cable 56 inside the casing 32 is fixed by positioning the second extending portion 58 of the flexible cable 56 by being inserted into the gap 61. Accordingly, the position of the control board 59 that is floatingly supported by the flexible cable 56 inside the casing 32 is also easily determined.

<< Other Embodiments >>
In the above embodiment, the insertion length of the second extending portion 58 into the gap 61, that is, where the deepest portion in the insertion direction, which is a portion from the point D to the point E in FIG. Can be adjusted as appropriate. With this adjustment, the position of the control board 59 inside the casing 32 can be adjusted by changing the position where the force applied by the lid portion 37 and the biasing force of the flexible cable 56 are balanced.

  In the said embodiment, as shown in FIG. 3, it demonstrated that the casing 32 had the main-body part 33 located in the front side, and the cover part 37 located in the back side. However, it is only necessary that the control board 59 is floatingly supported by the flexible cable 56 inside the casing 32, and the configuration of the casing 32 is not limited to the above and may be any configuration.

  In the above embodiment, it has been described that the engagement claw portion 35 a is formed in the main body portion 33 and the engagement recess portion 38 a is formed in the lid portion 37. However, the main body portion 33 and the lid portion 37 may be connected by means other than the engaging claw portion 35a and the engaging concave portion 38a. Further, the engaging claw portion may be formed on the lid portion 37, and the engaging concave portion may be formed on the main body portion 33.

  In the above embodiment, it has been described that the plane of the control board 59 is positioned in parallel with the surface of the display panel 55 when the lid portion 37 is attached to the main body portion 33. However, the plane of the control board 59 is not necessarily parallel to the surface of the display panel 55.

  In the above embodiment, it has been described that the second extending portion 58 of the flexible cable 56 is positioned so as to be inserted into the gap 61. However, the insertion position of the second extending portion 58 is not limited to the gap 61.

  Further, when the second extending portion 58 is inserted into the gap 61, the position of the gap 61 may be between the display panel 55 and the inner surface of the casing 32, and as shown in FIG. It is not limited between the casing 32.

  Moreover, in the said embodiment, as shown in FIG.4 and FIG.5, the connection part of the flexible cable 56 and the display panel 55, and the insertion position of the 2nd extension part 58 are displayed in planar view of the display panel 55. Although it has been described that the panel 55 is located, the present invention is not necessarily limited thereto.

  The bending method of the flexible cable 56 and the shape after the bending may not be limited to FIGS. For example, the flexible cable 56 may be bent only once while the display panel 55 and the control board 59 are connected.

  The display unit 53 including the display panel 55 may be arranged in the casing 32 and may not be fixed in the casing 32.

  In the above embodiment, the case where the display unit 53 is positioned and fixed by the positioning rib 35b inside the casing 32 has been described in the world shown in FIG. However, the method for positioning the display unit 53 inside the casing 32 is not limited to this.

  INDUSTRIAL APPLICABILITY Since the casing can be reduced in size, it is useful for a head mounting display type image display device.

DESCRIPTION OF SYMBOLS 10 Glasses 30 Image display apparatus 32 Casing 33 Main-body part 35a Engagement nail | claw part 37 Cover part 38a Engagement recessed part 55 Display panel 56 Flexible cable (wiring part)
57 1st extending part 58 2nd extending part 59 Control board

Claims (5)

A casing supported by the glasses;
A display panel disposed in the casing inside the casing and displaying an image for a user of the glasses to view;
A control board disposed inside the casing for controlling the image;
A flexible wiring portion that electrically connects the display panel and the control board inside the casing;
The wiring portion is bent at least once and has a shape having a portion interposed between the display panel and the control board, thereby floatingly supporting the control board with respect to the display panel. Image display device. In claim 1,
The casing is
An opening is formed, and at least a main body for accommodating the display panel;
A lid that can shield the control board exposed from the opening when mounted on the main body;
When the lid portion is attached to the main body portion, the wiring portion biases the control board toward the lid portion by the action of a force on the display panel side by the lid portion. An image display device. In claim 2,
The main body part and the lid part are formed with an engaging claw part and an engaging concave part for locking the main body part and the lid part when the lid part is attached to the main body part. An image display device characterized by that. In claim 2 or claim 3,
The screen display device according to claim 1, wherein when the lid portion is attached to the main body portion, the control board is positioned in parallel with the surface of the display panel. In any one of Claims 2-4,
The wiring portion includes a first extending portion that extends along the surface of the display panel on the lid side of the display panel, and a second extending portion that extends along the thickness direction of the display panel. Is bent like
The image display device, wherein the second extending portion is positioned so as to be inserted into a gap formed between the display panel and the inner surface of the casing.

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