Image display device

Abstract

An image display device (100) comprises: a housing (10) in which an opening (10a) is formed in an upper wall (11a), and which accommodates a light source that irradiates light toward the opening (10a); a liquid crystal display unit (20) which is disposed at a position that closes the opening (10a), and which emits the light from the light source as display light L for an image; a bezel part (30) that is formed in a frame shape along the edge of the opening (10a) and is fixed to the housing (10) with the liquid crystal display unit (20) sandwiched between the bezel part and the edge of the opening (10a); and a flexible printed circuit board part (40) electrically connected to the liquid crystal display unit (20) and attached to the outer surface of a side wall (11b) of the housing (10) via an adhesive material.

Description

Image display device

[0001] The present invention relates to an image display device.

[0002] For example, Patent Document 1 discloses a head-up display device including a display unit having a liquid crystal display (LCD) that displays an image, a light source that irradiates the display unit with light, and a plane mirror and a concave mirror that project the display light that has passed through the display unit, with a transparent member disposed in contact with one surface of the LCD that faces the light source. In this head-up display, a wire grid polarizing film and a diffuser are disposed on the transparent member at a position facing the light source. Patent Document 1 claims that the above configuration reduces the control load and suppresses temperature rise.

[0003] JP 2018-185410 A

[0004] In an image display device used in a head-up display device or the like, a liquid crystal display unit or a display control unit connected to the liquid crystal display unit may vibrate, which may affect the image displayed by the image display device. It is therefore desirable to suppress the occurrence of such vibrating motion in a vehicle display device.

[0005] An object of the present invention is to provide an image display device that can suppress the occurrence of rattles.

[0006] The image display device of the present invention comprises a housing having an opening formed in its upper wall and accommodating a light source that irradiates light toward the opening; a liquid crystal display unit that is positioned to cover the opening and emits light from the light source as display light for an image; a bezel unit that is formed in a frame shape along the edge of the opening and is fixed to the housing with the liquid crystal display unit sandwiched between it and the edge of the opening; and a flexible printed circuit board unit that is electrically connected to the liquid crystal display unit and is attached to the outer surface of the side wall of the housing via an adhesive material.

[0007] The image display device according to the present invention has an effect of being able to suppress the occurrence of rattles.

[0008] Fig. 1 is a schematic diagram showing a vehicle display device including an image display device according to an embodiment. Fig. 2 is a perspective view showing an image display device according to an embodiment. Fig. 3 is an exploded perspective view showing an image display device according to an embodiment. Fig. 4 is a perspective view showing an image display device according to an embodiment. Fig. 5 is a perspective view showing an image display device according to an embodiment. Fig. 6 is a perspective view showing an image display device according to an embodiment. Fig. 7 is a cross-sectional view showing an image display device according to an embodiment. Fig. 8 is a cross-sectional view showing a connector device according to an embodiment. Fig. 9 is an enlarged cross-sectional view showing a connector device according to an embodiment.

[0009] An image display device according to an embodiment of the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the embodiment. Furthermore, the components in the following embodiments include those that can be easily imagined by a person skilled in the art or those that are substantially the same.

[0010] [Embodiments] An embodiment will be described with reference to FIGS. 1 to 9. FIG. 1 is a schematic diagram showing a vehicle display device including an image display device according to an embodiment. FIG. 2 is a perspective view showing an image display device according to an embodiment. FIG. 3 is an exploded perspective view showing an image display device according to an embodiment. FIG. 4 is a perspective view showing an image display device according to an embodiment. FIG. 5 is a perspective view showing an image display device according to an embodiment. FIG. 6 is a perspective view showing an image display device according to an embodiment. FIG. 7 is a cross-sectional view showing an image display device according to an embodiment. FIG. 8 is a cross-sectional view showing an image display device according to an embodiment. FIG. 9 is an enlarged cross-sectional view showing an image display device according to an embodiment. Note that, for the sake of explanation, a bezel is omitted in FIGS. 4 and 5. FIG. 7 is a cross-sectional view taken along line A-A in FIG. 2. FIG. 8 is a cross-sectional view taken along line B-B in FIG. 2. FIG. 9 is an enlarged cross-sectional view of region C shown in FIG. 8.

[0011] 1, an image display device 100 according to the embodiment is a display device that emits display light L of an image, and is applied to a vehicle display device 200 that is mounted on a vehicle 300 such as an automobile. The vehicle display device 200 according to the embodiment is a head-up display device.

[0012] The vehicle display device 200 is disposed inside the dashboard of the vehicle 300 and emits display light L toward a reflective surface of a display member 301 of the vehicle 300. The display member 301 in the embodiment is a windshield. In the embodiment, the display member 301 is disposed in front of the driver of the vehicle 300. The reflective surface of the display member 301 may be coated with a semi-transparent coating or the like that reflects part of the incident light and transmits other part of the light. The display light L emitted toward the reflective surface of the display member 301 is reflected from the reflective surface to the eye point EP of the vehicle 300 and is visually recognized as a virtual image by the driver.

[0013] The vehicle display device 200 is configured to include the image display device 100 according to the embodiment. In the embodiment, the vehicle display device 200 includes a case 201, a first reflecting member 202, and a second reflecting member 203 in addition to the image display device 100.

[0014] The case 201 accommodates and supports the first reflecting member 202, the second reflecting member 203, and the image display device 100. The case 201 has an opening 201a that communicates between the inside and outside of the case 201. The opening 201a is provided in the case 201 at a position facing the display member 301. The vehicle display device 200 emits display light L from the case 201 toward the display member 301 through the opening 201a. The display light L is light that is emitted from the image display device 100 and reflected by the first reflecting member 202 and the second reflecting member 203.

[0015] The first reflecting member 202 and the second reflecting member 203 are disposed on the optical path from the image display device 100 to the display member 301, and are an optical system that reflects the display light L emitted from the image display device 100 toward the display member 301. The first reflecting member 202 has a flat reflecting surface and is disposed at a position facing the image display device 100. The first reflecting member 202 reflects the display light L emitted from the image display device 100 toward the second reflecting member 203. The second reflecting member 203 has a concave curved reflecting surface and is disposed at a position facing the first reflecting member 202. The second reflecting member 203 reflects the display light L reflected by the first reflecting member 202 toward the display member 301 through the opening 201 a. In the embodiment, the second reflecting member 203 functions as a magnifying mirror. That is, the second reflecting member 203 enlarges and reflects the display image so that the display image represented by the display light L after being reflected by the second reflecting member 203 is larger than the display image represented by the display light L before being reflected by the second reflecting member 203.

[0016] The image display device 100 shown in Fig. 2 emits a display image projected onto a display member 301 as display light L. As shown in Fig. 3, the image display device 100 according to the embodiment includes a housing 10, a liquid crystal display unit 20, a bezel unit 30, a flexible printed circuit board unit 40, an elastic member 50, a glass plate 60, a diffusion plate 70, and a heat conduction sheet 80.

[0017] The housing 10 is a box-shaped member that houses a light source (not shown) therein. The light source is, for example, an LED (Light Emitting Diode) mounted on a substrate or the like. The housing 10 in this embodiment is a metal housing. The housing 10 is formed of a metal material with high thermal conductivity, such as aluminum. In this embodiment, the housing 10 is composed of an upper housing 11 and a lower housing 12.

[0018] The upper housing 11 includes a rectangular plate-shaped top wall 11a and side walls 11b extending vertically from each side of the top wall 11a, and is formed in a box shape with an open bottom. The lower housing 12 includes a rectangular plate-shaped bottom wall 12a and side walls 12b extending vertically from each side of the bottom wall 12a, and is formed in a box shape with an open top.

[0019] The housing 10 is formed into a box shape by assembling the upper housing 11 and the lower housing 12 so that the lower opening of the upper housing 11 and the lower housing 12 are aligned with each other, and are fixed with fixing members such as screws. １ , second side wall 11b ２ , third side wall 11b ３ , and the fourth side wall 11b ４ In the upper housing 11, the first side wall 11b １ and the second side wall 11b ２ The third side wall 11b faces each other in the front-rear direction perpendicular to the up-down direction from the upper housing 11 to the lower housing 12. ３ and the fourth side wall 11b ４ The two plates face each other in the width direction perpendicular to the up-down direction and the front-rear direction.

[0020] The upper wall 11a is connected to the first side wall 11b. １ to the second side wall 11b ２ The third side wall 11b is disposed so as to slope downward. ３ the upper end of the fourth side wall 11b ４ The upper ends of the first side walls 11b are aligned with the upper wall 11a. １ From the side, the second side wall 11b ２ Here, the lower side in the vertical direction is the side of the lower housing 12 relative to the upper housing 11, and the upper side in the vertical direction is the side of the upper housing 11 relative to the lower housing 12.

[0021] In the embodiment, the first side wall 11b in the vertical direction １ , second side wall 11b ２ , third side wall 11b ３ , and the fourth side wall 11b ４The positions of the lower ends of the first side walls 11b are located at substantially the same position. １ The length of the second side wall 11b in the vertical direction is ２ The upper ends of the four side walls of the lower housing 12 are located at substantially the same positions in the up-down direction.

[0022] An opening 10a is formed in the upper wall 11a of the housing 10. In the embodiment, the opening 10a is formed in a rectangular shape. A light source housed in the housing 10 is disposed so as to irradiate light toward the opening 10a.

[0023] A heat dissipation member 12A is formed on the bottom wall 12a of the housing 10. The heat dissipation member 12A protrudes from the bottom wall 12a of the lower housing 12 toward the side opposite to the upper housing 11 (i.e., downward). The heat dissipation member 12A in this embodiment is composed of a plurality of plate-like portions protruding downward from the bottom wall 12a of the lower housing 12, and functions as heat dissipation fins.

[0024] Furthermore, flange portions 12B are formed on the lower housing 12 for fixing the image display device 100 to a case 201 (see FIG. 1 ) of the vehicle display device 200. The flange portions 12B in the embodiment are formed on both side walls of the lower housing 12 in the width direction. In the embodiment, the flange portions 12B are formed as plate-like portions that protrude in the width direction from the side walls of the lower housing 12. Each flange portion 12B has an insertion hole formed therein through which a fastening member such as a bolt is inserted.

[0025] The liquid crystal display unit 20 is a so-called liquid crystal panel, and is configured, for example, by a light-transmitting or light-semitransmitting TFT liquid crystal (Thin Film Transistor Liquid Crystal Display). The liquid crystal display unit 20 emits light from its display surface on the front side when illuminated by a light source from the rear side. With this configuration, the liquid crystal display unit 20 emits light from the light source as display light L of an image from the display surface. Here, the light source is driven by power obtained from, for example, a battery in the vehicle 300 (see FIG. 1). As shown in FIGS. 3 and 4 , in this embodiment, the liquid crystal display unit 20 is formed in the shape of a rectangular plate slightly larger than the opening 10a of the housing 10 and is positioned to cover the opening 10a.

[0026] The bezel 30 is disposed above the top wall 11a of the housing 10. The bezel 30 has an opening 30a that is rectangular when viewed from the top-bottom direction. The opening 30a of the bezel 30 is a portion through which display light L from the liquid crystal display unit 20 passes toward the first reflecting member 202 (see FIG. 1 ). In the embodiment, the bezel 30 is formed in a frame shape that follows the edge of the opening 10a of the housing 10. The bezel 30 is fixed to the housing 10 with the liquid crystal display unit 20 sandwiched between the bezel 30 and the edge of the opening 10a of the housing 10.

[0027] In this embodiment, as shown in FIG. 2, the third side wall 11b of the upper housing 11 of the housing 10 ３ and the fourth side wall 11b ４ The bezel 30 has a protrusion 11A that protrudes outward, and the bezel 30 has a locking portion 31 that engages with the protrusion 11A. In the embodiment, the locking portions 31 are provided as a plurality of frame-shaped portions, each of which protrudes from the outer periphery of the bezel 30 toward the housing 10 and is arranged to correspond one-to-one with the protrusion 11A. The bezel 30 is attached to the housing 10 from above in the up-down direction. When the bezel 30 is attached to the housing 10, the locking portions 31 climb over the protrusions 11A and fit the protrusions 11A into the frame of the locking portions 31, thereby locking the bezel 30 to the housing 10.

[0028] The flexible printed circuit board unit 40 includes a display control unit 41 and a flexible film-like wiring unit 42. The display control unit 41 in this embodiment is a rectangular plate-like member made of, for example, an IC chip, and is provided on the surface of the wiring unit 42 and electrically connected to the wiring unit 42. In this embodiment, an end of the flexible printed circuit board unit 40 (one end of the wiring unit 42) is connected to a first display edge 20a, which is one of the four sides of the liquid crystal display unit 20. Here, the first display edge 20a is connected to the first side wall 11b. １ The display control unit 41 is driven by power obtained from a battery or the like in the vehicle 300, and controls the operation of the liquid crystal display unit 20 connected via the wiring unit 42.

[0029] As shown in FIGS. 5 and 6, the flexible printed circuit board unit 40 is pulled out from the first display side 20a and is connected to the side wall 11b (first side wall 11b) of the housing 10. １ That is, the wiring portion 42 of the flexible printed circuit board portion 40 is attached to the outer surface of the side wall 11b (first side wall 11b) of the housing 10 with the connection end portion on the liquid crystal display portion 20 side bent. １ ) via an adhesive material. Here, for example, double-sided tape can be used as the adhesive material. In this case, for example, double-sided tape is attached to the back surface of the wiring portion 42, and in this state, the back surface of the wiring portion 42 is attached to the side wall 11b (first side wall 11b １ ) so that the wiring portion 42 can be attached to the outer surface of the side wall 11b.

[0030] In the embodiment, the first side wall 11b is formed at the edge of the opening 10a in the housing 10. １ A space is provided between the edge of the side and the bezel 30, and the wiring part 42 is connected to the first display side 20a of the liquid crystal display part 20 through the space.

[0031] In the image display device 100 according to the embodiment, the wiring section 42 is attached to the side wall 11b of the housing 10, and the display control section 41 arranged on the wiring section 42 is fixed to the housing 10 via the wiring section 42. Note that the flexible printed circuit board section 40 may be provided with a connector or the like for electrically connecting the display control section 41 to an ECU (Electronic Control Unit) or the like of the vehicle 300 (see FIG. 1 ). In this case, the connector is provided when the wiring section 42 is attached to the side wall 11b (first side wall 11b) of the housing 10. １ ), the wiring portion 42 is provided on the surface thereof so as to be positioned on the side wall 11b.

[0032] The elastic member 50 is a rubber-like or sponge-like member provided between the bezel 30 and the liquid crystal display unit 20. The elastic member 50 is, for example, a packing. In the embodiment, the elastic member 50 includes a first elastic member 51 and a second elastic member 52, as shown in FIGS. 3 and 4 .

[0033] The first elastic member 51 and the second elastic member 52 are each formed in a thin plate or rod shape. As shown in FIG. 4, the first elastic member 51 is positioned on one side of the liquid crystal display unit 20 in the extending direction of the first display edge 20a (the third side wall 11b). ３ The second elastic member 52 is disposed on the other end (fourth side wall 11b) of the liquid crystal display unit 20 in the extending direction of the first display side 20a. ４ The image display device 100 of the embodiment has the bezel 30 pressing the liquid crystal display 20 against the housing 10 via the elastic members 50 at both ends of the liquid crystal display 20, thereby preventing the liquid crystal display 20 from rattling. Also, the liquid crystal display 20 can be prevented from floating up and down.

[0034] 7 , a gap SP is provided between the first elastic member 51 and the second elastic member 52, at least between the connection end of the liquid crystal display unit 20 with the flexible printed circuit board unit 40 and the bezel unit 30. By providing the gap SP between the first elastic member 51 and the second elastic member 52, between the end (connection end) of the liquid crystal display unit 20 on the first display side 20a side and the bezel unit 30, it is possible to prevent the elastic member 50 and the like from interfering with the connection portion (wiring unit 42 and the like) between the liquid crystal display unit 20 and the display control unit 41.

[0035] The glass plate 60 is a transparent glass member formed in a flat plate shape, and is disposed between the liquid crystal display unit 20 and the opening 10a of the housing 10. In this embodiment, the glass plate 60 is formed in a rectangular shape. As shown in Fig. 8, the glass plate 60 is disposed so as to be interposed between the edge of the top wall 11a of the housing 10 and the liquid crystal display unit 20. The glass plate 60 functions as a heat conductive member.

[0036] The glass plate 60 in this embodiment is sapphire glass, which has a thermal conductivity at least higher than that of air. Sapphire glass is formed, for example, by artificially growing high-purity alumina (aluminum oxide) into large crystals. The sapphire glass 21 is bonded to the liquid crystal display unit 20 by optical bonding, such as OCA (Optical Clear Adhesive) or OCR (Optical Clear Resin).

[0037] By bringing the glass plate 60 into contact with the liquid crystal display unit 20, heat from the liquid crystal display unit 20 is more easily conducted to the glass plate 60. It is desirable that the contact area of ​​the glass plate 60 with the liquid crystal display unit 20 be large. For example, the glass plate 60 is in contact with the entire back surface of the liquid crystal display unit 20. It is preferable that the glass plate 60 cover the entire image display area of ​​the liquid crystal display unit 20. This allows the glass plate 60 to prevent stress from being applied to localized parts of the liquid crystal display unit 20, thereby suppressing whitening. The thickness of the glass plate 60 may be greater than the thickness of the liquid crystal display unit 20. The glass plate 60 in contact with the liquid crystal display unit 20 can increase the heat capacity of the liquid crystal display unit 20 and absorb heat generated by the liquid crystal display unit 20.

[0038] The diffuser plate 70 is a film-like member that diffuses light from the light source. The diffuser plate 70 of this embodiment is formed in a rectangular shape that is slightly larger than the glass plate 60. As shown in Figures 8 and 9, the diffuser plate 70 is disposed between the edge of the upper wall 11a of the housing 10 and the glass plate 60.

[0039] The thermally conductive sheet 80 is a sheet-like member having thermal conductivity, such as a thermal sheet. The thermally conductive sheet 80 has a thermal conductivity higher than that of air. In this embodiment, as shown in FIG. 3 , the thermally conductive sheet 80 includes a first thermally conductive sheet 81 and a second thermally conductive sheet 82.

[0040] The first thermally conductive sheet 81 and the second thermally conductive sheet 82 are formed in the shape of linearly extending sheets. The first thermally conductive sheet 81 and the second thermally conductive sheet 82 are provided on the edge of the opening 10a in the top wall 11a of the housing 10. At the edge of the opening 10a of the housing 10, the first thermally conductive sheet 81 is in contact with the first side wall 11b. １ The second heat conductive sheet 82 is disposed on the edge of the second side wall 11b. ２ In the embodiment, the first thermally conductive sheet 81 and the second thermally conductive sheet 82 are disposed so as to sandwich the diffusion plate 70 in the front-rear direction. The first thermally conductive sheet 81 and the second thermally conductive sheet 82 are disposed so as to be interposed between the glass plate 60 and the housing 10.

[0041] At the edge of the opening 10a in the housing 10, a first side wall 11b １ the side edge and the second side wall 11b ２ A groove extending in the width direction is formed on each of the edges of the first side wall 11b. １ The groove formed on the edge of the second side wall 11b is formed to have a size and shape that allows the first thermally conductive sheet 81 to be placed inside, and the depth of the groove is formed to be slightly shallower than the thickness of the first thermally conductive sheet 81. ２ The groove formed in the edge of the third side wall 11b is formed to have a size and shape that allows the second thermally conductive sheet 82 to be placed inside, and the depth of the groove is formed to be slightly shallower than the thickness of the second thermally conductive sheet 82. With this configuration, the glass plate 60 is held in a state where it is slightly raised from the edge of the opening 10a in the housing 10. That is, the third side wall 11b at the edge of the opening 10a in the housing 10 ３ between the edge of the side wall 11b and the glass plate 60, and at the edge of the opening 10a of the housing 10 ４ A space is formed between the edge of the side and the glass plate 60. This configuration can prevent the glass plate 60 from coming into direct contact with the housing 10, and can prevent the glass plate 60 from being scratched by the housing 10 made of hard metal, for example.

[0042] As described above, the image display device 100 according to the embodiment includes a housing 10 having an opening 10a formed in an upper wall 11a and accommodating a light source that irradiates light toward the opening 10a, a liquid crystal display unit 20 that is positioned to cover the opening 10a and emits light from the light source as display light L for an image, a bezel unit 30 that is formed in a frame shape along the edge of the opening 10a and is fixed to the housing 10 with the liquid crystal display unit 20 sandwiched between the bezel unit 30 and the edge of the opening 10a, and a flexible printed circuit board unit 40 that is electrically connected to the liquid crystal display unit 20 and is attached to the outer surface of the side wall 11b of the housing 10 via an adhesive material.

[0043] The image display device 100 according to the embodiment fixes the liquid crystal display unit 20 with the bezel unit 30, and adheres and fixes the flexible printed circuit board unit 40 connected to the liquid crystal display unit 20 to the housing 10 with an adhesive material, thereby suppressing rattle of the liquid crystal display unit 20 and the flexible printed circuit board unit 40. For example, even if the image display device 100 vibrates due to the running of the vehicle 300, rattle of the liquid crystal display unit 20 and the flexible printed circuit board unit 40 connected to the liquid crystal display unit 20 can be suppressed. Therefore, the effect of vibration on the display image displayed by the image display device 100 can be reduced.

[0044] Moreover, the image display device 100 according to the embodiment further includes an elastic member 50 provided between the bezel portion 30 and the liquid crystal display portion 20 .

[0045] The image display device 100 according to the embodiment can further suppress rattle of the liquid crystal display unit 20 by providing the elastic member 50 between the bezel unit 30 and the liquid crystal display unit 20. It can also suppress lifting of the liquid crystal display unit 20 in the vertical direction.

[0046] Furthermore, in the image display device 100 according to the embodiment, the liquid crystal display unit 20 is formed in the shape of a rectangular plate, an end of the flexible printed circuit board unit 40 is connected to a first display edge 20a, which is one of the four sides of the liquid crystal display unit 20, the elastic member 50 includes a first elastic member 51 and a second elastic member 52, the first elastic member 51 is arranged on one end of the liquid crystal display unit 20 in the extension direction of the first display edge 20a, and the second elastic member 52 is arranged on the other end of the liquid crystal display unit 20 in the extension direction of the first display edge 20a, and a gap SP is provided between the first elastic member 51 and the second elastic member 52, at least between the connection end of the liquid crystal display unit 20 with the flexible printed circuit board unit 40 and the bezel unit 30.

[0047] The image display device 100 according to the embodiment can suppress rattle of the liquid crystal display unit 20 by fixing both ends of the liquid crystal display unit 20 so as to be sandwiched between the elastic members 50 and the edges of the housing 10. Furthermore, by providing a gap SP between the bezel 30 and the end (connection end) of the liquid crystal display unit 20 on the first display side 20a side between the first elastic member 51 and the second elastic member 52, it is possible to suppress interference of the elastic members 50 and the like with the connection portion (wiring portion 42 and the like) between the liquid crystal display unit 20 and the display control unit 41.

[0048] In the above embodiment, the windshield is used as the display member 301 of the vehicle 300, but the present invention is not limited to this. The display member 301 may be, for example, a combiner.

[0049] In the above embodiment, the vehicle display device 200 has been described as having two reflective members (the first reflective member 202 and the second reflective member 203), but this is not limiting. For example, the vehicle display device 200 may have only one reflective member. Furthermore, the vehicle display device 200 may directly emit the display light L to the display member 301.

[0050] Although the above embodiment has been described using an example in which double-sided tape is used as the adhesive material, the present invention is not limited to this. For example, the adhesive material may be an adhesive agent or the like.

[0051] In the above embodiment, the elastic member 50 is described as including the first elastic member 51 and the second elastic member 52, but this is not limiting. The elastic member 50 may be provided on an end portion of the liquid crystal display unit 20 other than the end portion on the first display side 20a side. For example, the elastic member 50 may be a single U-shaped elastic member arranged on an end portion of the liquid crystal display unit 20 other than the end portion on the first display side 20a side.

[0052] In addition, in the above embodiment, an example has been described in which the glass plate 60 is placed in contact with the liquid crystal display unit 20 using optical bonding such as OCA or OCR, but this is not limited to this, and the glass plate 60 may be placed in contact with the liquid crystal display unit 20 using other methods.

[0053] The contents disclosed in the above embodiments can be implemented in appropriate combinations.

[0054] 10: Housing 20: Liquid crystal display unit 30: Bezel unit 40: Flexible printed circuit board unit 41: Display control unit 42: Wiring unit 50: Elastic member 51: First elastic member 52: Second elastic member 60: Glass plate 70: Diffusion plate 80: Heat conduction sheet 81: First heat conduction sheet 82: Second heat conduction sheet 100: Image display device 200: Vehicle display device 300: Vehicle

Claims

1. An image display device comprising: a housing having an opening formed in an upper wall and accommodating a light source that irradiates light toward said opening; a liquid crystal display unit that is positioned to cover said opening and emits light from said light source as image display light; a bezel unit formed in a frame shape along the edge of said opening and fixed to said housing with said liquid crystal display unit sandwiched between it and the edge of said opening; and a flexible printed circuit board unit that is electrically connected to the liquid crystal display unit and attached to the outer surface of a side wall of said housing via an adhesive material.

2. The image display device according to claim 1, further comprising an elastic member provided between the bezel portion and the liquid crystal display portion.

3. An image display device as described in claim 2, wherein the liquid crystal display unit is formed in the shape of a rectangular plate, an end of the flexible printed circuit board unit is connected to a first display edge which is one of the four sides of the liquid crystal display unit, the elastic member includes a first elastic member and a second elastic member, the first elastic member is arranged on one end of the liquid crystal display unit in the extension direction of the first display edge, and the second elastic member is arranged on the other end of the liquid crystal display unit in the extension direction of the first display edge, and a gap is provided between the first elastic member and the second elastic member, at least between the connection end of the liquid crystal display unit with the flexible printed circuit board unit and the bezel unit.

Images