JP6284234B2 - Image projector, vehicle display device, and assembly method - Google Patents

Description

  The present invention relates to an image projector that performs projection on a windshield of a vehicle, a vehicle display device that includes the image projector, and a method for assembling the image projector.

  Conventionally, a vehicle display device as a head-up display device that projects an image onto a windshield of a vehicle is provided in an instrument panel (see, for example, Patent Document 1). As shown in FIG. 14, the vehicle display device 700 described in Patent Document 1 is mounted in an instrument panel I in which an opening H is provided in a wall A facing the windshield F. An image is projected onto the glass F. In the vehicular display device 700, an image projection port is provided in a case (not shown) so as to overlap the opening H. In such a vehicular display device 700, for example, a transparent cover C that closes the projection port may be provided to prevent dust or moisture from entering the case from the image projection port. External light such as light may be reflected by the cover C and go directly to the occupant's eye point EP, which may cause discomfort.

  Therefore, a vehicle display device 800 shown in FIG. 15 is conceivable as a configuration for avoiding that external light travels toward the passenger's eye point EP. The vehicle display device 800 is provided in the instrument panel I. The instrument panel I has a wall A facing the windshield F, a descending wall W that gradually descends from the front side to the rear side (left to right in FIG. 15) of the vehicle, and a descending wall. An opening H adjacent to the lower end of the portion W is provided. The projection port of the vehicular display device 700 is provided so as to overlap with the opening H. The projection opening is provided with a cover C that gradually moves upward as it goes from the front side to the rear side of the vehicle. The vehicle display device 800 displays an image on the windshield F through the opening H from the projection opening. Project. In such a configuration, since the descending wall portion W is provided and the vehicle front side of the cover C is located below the rear side, it is possible to make it difficult for outside light to reach the cover C. It is possible to suppress the reflected external light from going directly to the passenger's eye point EP.

JP 2007-148092 A

  In the configuration described above, in the instrument panel I, since the outside light does not hit the portion Wa near the opening H in the descending wall portion W, the portion Wa becomes dark, and the difference in brightness from the cover C increases. The reflection on the windshield F may be noticeable. Therefore, the descending wall portion W is made of a light-transmitting material, and a plate-shaped light guide member 802 is disposed so as to face the inner surface of the descending wall portion W, and external light is lowered by the light guide member 802. The structure which guides to location Wa vicinity of the opening H of W and illuminates the descent | falling wall part W from the inner surface side can be considered. According to this configuration, since the descending wall portion W is brightened so as to reduce the difference in brightness, the reflection on the windshield F can be made inconspicuous, and uncomfortable feeling given to the passenger can be suppressed.

  By the way, it is conceivable that the above-described cover C is attached to the opening H on the instrument panel I side instead of the projection opening of the vehicle display device 800 to improve the appearance on the instrument panel I side. Even in this case, since the projection port of the vehicle display device 800 is disposed so as to overlap the opening H closed by the cover C, the instrument panel I is provided even if the cover C is not provided at the projection port. If assembled, the dustproof property of the vehicle display device 800 is ensured. Considering the transparency of the projection light of the image, it is preferable that the projection port of the vehicle display device 800 is not provided with a cover or the like. On the other hand, if the projection port is not blocked before assembly, the vehicle display device 800 cannot have the dustproof property.

  Therefore, the present invention provides an image projector that is secured even before assembly, a vehicle display device having such an image projector, and a method for assembling such an image projector. With the goal.

In order to solve the above-mentioned object, the invention described in claim 1 is provided in an opening provided in a wall facing a windshield in an instrument panel of a vehicle and closed by a transparent cover, or is fitted into the facing wall. An image projector for projecting an image onto the windshield through an opening provided in a bezel member and closed with a transparent cover, wherein a box-shaped case is formed with a projection opening arranged so as to overlap the opening And a pre-assembly protective sheet disposed in the case so as to close the projection port from the inside, and the case has a drawing port in which a part of the pre-assembly protective sheet extends. An image projector characterized in that the pre-assembly protective sheet is provided so as to be able to be pulled out from the drawing port by pulling an extended portion extending from the drawing port. That.

  According to a second aspect of the present invention, in the first aspect of the present invention, the dustproof member according to the first aspect of the invention suppresses intrusion of foreign matter from the extraction port after the pre-assembly protective sheet is extracted to the extraction port. Is provided.

  The invention described in claim 3 is the invention described in claim 2, wherein the extraction port is formed in a slit shape extending in a width direction of the pre-assembly protective sheet, and the dust-proof member is It is characterized by comprising a brush planted in the drawing port so as to sandwich the protective sheet before assembly in the thickness direction over the entire width direction.

  The invention described in claim 4 is the invention described in claim 2, wherein the extraction port is formed in a slit shape extending in a width direction of the pre-assembly protective sheet, and the dust-proof member is It is characterized by comprising a pair of flexible ridges having flexibility, which are provided so as to protrude from the drawing port so as to sandwich the protective sheet before assembly in the thickness direction over the entire width direction.

  The invention described in claim 5 is the invention described in claim 2, wherein the extraction port is open in a horizontal direction, the dustproof member is formed of a flexible sheet material, It is characterized by comprising a dustproof sheet in which one end edge is fixed to the upper edge of the drawing port or in the vicinity thereof and the other end edge is a free end.

  In order to solve the above-described object, a sixth aspect of the present invention is a vehicle display device having an image projector disposed in an instrument panel of a vehicle, wherein the image projector is the first aspect. It is an image projector as described in any one of -5, It is a display apparatus for vehicles characterized by the above-mentioned.

  In order to solve the above-mentioned object, the invention described in claim 7 is provided through an opening provided in a bezel member fitted in a wall facing a windshield in an instrument panel of a vehicle and closed with a transparent cover. An image projector that projects an image on a windshield, an assembly method for assembling the image to the bezel member, wherein the image projector is the image projector according to any one of claims 1 to 5, An arrangement process in which the image projector is disposed in the instrument panel so that the projection opening is closed by the bezel member whose opening is closed by the transparent cover, and the projection opening overlaps the opening; And a pulling process of pulling out the pre-assembly protective sheet from the pull-out port by pulling the extended portion after the arranging process. It is a method of assembling to.

  In order to solve the above-described object, the invention described in claim 8 projects an image on the windshield through an opening provided on a wall of the instrument panel of the vehicle facing the windshield and closed with a transparent cover. An assembling method for assembling the image projector to the instrument panel, wherein the image projector is the image projector according to any one of claims 1 to 5, and the image projector is An arrangement process in which the projection opening is closed by the instrument panel in which the opening is closed by the transparent cover and the projection opening is arranged in the instrument panel so as to overlap the opening; and the arrangement process And then pulling out the pre-assembly protective sheet from the pull-out opening by pulling the extension portion, It is a method of assembling to.

  According to the first and sixth to eighth aspects of the present invention, since the pre-assembly protective sheet for closing the image projection opening from the inside is built in the image projector, the image projector can be used even before the assembly. Dustproofness is ensured. In addition, since the pre-assembly protective sheet can be pulled out from the pull-out opening by pulling the extended portion, the pre-assembly protective sheet can be pulled out after the assembly by pulling out the pre-assembly protective sheet. It does not reduce the permeability. As a result, the dustproofness of the image projector can be ensured even before assembly.

  According to the second aspect of the present invention, the extraction port is provided with a dust-proof member that suppresses intrusion of foreign matter from the extraction port after the pre-assembly protective sheet is extracted. The dustproof property can be secured.

  According to the third aspect of the present invention, after the pre-assembly protective sheet is pulled out, the slit-shaped pull-out port is closed by the brush to ensure the dustproof property. Further, since the brush has flexibility, it is not hindered from pulling out the protective sheet before assembly. That is, according to this brush, it is possible to achieve both the pull-out property and the dust-proof property of the protective sheet before assembly.

  According to the fourth aspect of the present invention, after the pre-assembly protective sheet is pulled out, the slit-shaped pull-out port is closed by the convex lip to ensure dustproofness. Moreover, since the protruding lip has flexibility, it is not hindered to pull out the protective sheet before assembly. That is, with this convex lip, both the pulling-out property and the dust-proofing property of the protective sheet before assembly can be achieved.

  According to the fifth aspect of the present invention, after the pre-assembly protective sheet is pulled out, the free end of the dustproof sheet hangs down, thereby closing the extraction port and securing the dustproof property. Moreover, since the dustproof sheet | seat which was formed with the flexible sheet material and the one end edge was made into the free end has a softness | flexibility, extraction of the protection sheet before an assembly | attachment is not prevented. That is, with this dustproof sheet, both the pullability and dustproofness of the protective sheet before assembly can be achieved.

It is a perspective view which shows a mode that the display apparatus for vehicles concerning 1st Embodiment of this invention was assembled | attached to the instrument panel. It is the figure which looked at the display apparatus for vehicles of Drawing 1 from the front direction of vehicles. It is sectional drawing of the display apparatus for vehicles of FIG. It is a disassembled perspective view of the display apparatus for vehicles of FIG. It is a figure explaining the assembly | attachment to the opposing wall with the windshield in the instrument panel of the display apparatus for vehicles of FIG. It is a figure which shows the image projected on a windshield by the display apparatus for vehicles of FIG. It is a figure which shows the extraction port of the pre-assembly protection sheet in the display apparatus for vehicles of FIG. It is a figure which shows the holding structure of the pre-assembly protection sheet in the display apparatus for vehicles of FIG. It is a figure which shows an example of the dustproof member which plugs up the extraction opening of the protection sheet before an assembly | attachment in the display apparatus for vehicles of FIG. It is a figure which shows another example of the dustproof member which plugs up the extraction opening | mouth of the protection sheet before an assembly | attachment in the display apparatus for vehicles of FIG. It is a figure which shows the further another example of the dustproof member which plugs up the extraction opening of the protection sheet before an assembly | attachment in the display apparatus for vehicles of FIG. It is a figure which shows the instrument panel concerning 2nd Embodiment of this invention. It is a figure which shows the projection image projected on a windshield from opening of the instrument panel of FIG. It is sectional drawing which shows the conventional display apparatus for vehicles typically. It is sectional drawing which shows the other conventional display apparatus for vehicles typically.

  An image projector, a vehicle display device, and a method of assembling an image projector according to a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a state in which a vehicle display device according to a first embodiment of the present invention is assembled to an instrument panel. FIG. 2 is a view of the vehicle display device of FIG. 1 as viewed from the front of the vehicle. 3 is a cross-sectional view of the vehicle display device of FIG. 4 is an exploded perspective view of the vehicle display device of FIG. FIG. 5 is a diagram for explaining the assembly of the instrument panel of the vehicle display device of FIG. 1 to the facing wall with the windshield. FIG. 6 is a diagram showing an image projected on the windshield by the vehicle display device of FIG. 1. FIG. 7 is a view showing a drawing port of the pre-assembly protective sheet in the vehicle display device of FIG. FIG. 8 is a view showing a holding structure of the pre-assembly protective sheet in the vehicle display device of FIG. FIG. 9 is a diagram illustrating an example of a dustproof member that closes the drawing port of the protective sheet before assembly in the vehicle display device of FIG. 1. FIG. 10 is a view showing another example of the dust-proof member that closes the drawing port of the pre-assembly protective sheet in the vehicle display device of FIG. FIG. 11 is a view showing still another example of the dust-proof member that closes the pull-out port of the pre-assembly protective sheet in the vehicle display device of FIG. 1. In the following description, “front / rear / up / down / left / right” corresponds to front / rear, up / down / left / right of the vehicle V.

  As shown in FIGS. 1 and 2, the vehicle display device 1 according to the present embodiment is attached to an instrument panel I of a vehicle V and is used as a head-up display device that projects an image onto a windshield F. Is.

  As shown in FIGS. 3 and 4, the vehicle display device 1 includes an image projector 10 and a bezel body 15.

  The image projector 10 includes a display source 11 for projecting an image, a reflection unit 12 that reflects an image from the display source 11, and a casing as a synthetic resin case that houses the display source 11 and the reflection unit 12. 13. The housing 13 includes an upper wall portion 13a, a lower wall portion 13b disposed opposite to the upper wall portion 13a, and a peripheral wall portion 13c connected to the peripheral edges of the upper wall portion 13a and the lower wall portion 13b. The upper wall portion 13a is provided with a projection port 13d disposed so as to overlap with an opening 20a of a bezel member 20 described later. The image projector 10 reflects the image projected by the display source 11 by the reflection unit 12 and projects it on the windshield F through the projection port 13d. Thereby, in the passenger | crew of the vehicle V, it visually recognizes as the image displayed on the windshield F. FIG.

  The bezel body 15 includes a bezel member 20, a light guide member 30, a support member 40, a daylighting window member 50, and a transparent cover 60.

  The bezel member 20 is made of, for example, a semi-transparent (light transmissive) synthetic resin, and has an annular shape in a plan view having an opening 20a in the center, and has a shape that gradually goes downward from the outer peripheral edge toward the inner peripheral edge. doing. In other words, the bezel member 20 is formed in such a shape that a hollow substantially square pyramid with an upper end surface and a lower end surface is turned upside down. The bezel member 20 is disposed by being fitted into a hole provided in a wall A facing the windshield F of the instrument panel I. That is, the bezel member 20 is fitted into the opposing wall A and forms the entire periphery of the opening 20a for the image projector 10 disposed in the instrument panel I to project an image on the windshield F. .

  The bezel member 20 has a front bezel portion 21 that is disposed on the front side of the vehicle V when fitted into the facing wall A. The front bezel portion 21 is disposed so as to float upward from the facing wall A so that the front end portion 21a of the vehicle V has a gap S between the vehicle V and the facing wall A (above the facing wall A). To be placed on). Further, the front bezel portion 21 has a descending wall portion 22 that gradually goes downward and reaches the opening 20a as it goes from the front side to the rear side of the vehicle V.

  When the bezel member 20 is fitted into the opposing wall A, a part of the front side of the outer peripheral edge of the bezel member 20 (that is, the end 21a on the front side of the vehicle V of the front bezel portion 21) is lifted above the opposing wall A. (FIG. 2), and other parts of the outer peripheral edge other than the part are arranged so that the outer surface (upper surface) of the bezel member 20 and the outer surface of the opposing wall A are smoothly connected (FIG. 1). At this time, the opening 20a of the bezel member 20 and the projection port 13d of the image projector 10 are arranged so as to overlap each other in the vertical direction. Further, the bezel member 20 is adjusted to have the same color appearance as the facing wall A, for example, so that the difference in reflection on the windshield F between the facing wall A and the facing wall A of the instrument panel I is not noticeable. And surface processing.

  The light guide member 30 is formed in a substantially rectangular plate shape (FIG. 4) in plan view using a highly transparent material such as glass, acrylic, polycarbonate, or other synthetic resin, and is formed on the inner surface of the front bezel portion 21. They are arranged in layers with a slight gap. In the cross-sectional view in the front-rear direction (FIG. 3), the light guide member 30 is formed thick on the front side and thin on the rear side, and the portion between the thickly formed portion and the thinly formed portion is from the front to the rear. It is formed so as to become thinner gradually as it goes to. Specifically, the surface of the light guide member 30 that faces downward is formed in a flat shape, and the surface of the downward wall portion 22 that faces upward is an inclined portion that gradually descends from the front toward the rear in the middle portion in the front-rear direction. A surface is formed.

  The light guide member 30 is formed so as to guide the light that has entered the light incident surface 30a, which is an end surface on the front side of the vehicle V, to the end portion on the rear side and to emit light from the surface on the descending wall portion 22 side. That is, the light guide member 30 guides light in the light guide direction from the front end portion where the light incident surface 30a is located toward the opposite rear end portion. As a result, light can be guided toward the light-transmitting descending wall portion 22 to illuminate the vicinity of the opening 20 a in the descending wall portion 22.

  The support member 40 includes a synthetic resin mounting portion 41 and a pair of leg portions 42.

  The placement portion 41 is a portion on which the light guide member 30 is placed, and is formed in a substantially plate shape whose plan view shape is slightly larger than the plan view shape of the light guide member 30. The mounting portion 41 is disposed with a space from the inner surface of the front bezel portion 21, and the front end portion 41 a of the vehicle V is aligned with the end portion 21 a of the front bezel portion 21 in a generally vertical direction. Further, both end portions facing in the left-right direction are disposed in contact with the inner surface of the bezel member 20. Thereby, the mounting part 41 forms an accommodation space K for accommodating the light guide member 30 between the mounting part 41 and the front bezel part 21. The accommodation space K opens toward the gap S. In the accommodation space K, the light guide member 30 is disposed such that the light incident surface 30a faces the gap S through the opening of the accommodation space K.

  The pair of leg portions 42 are portions that connect the mounting portion 41 and the housing 13 of the image projector 10, and respectively forward and upward from both left and right ends of the front surface of the peripheral wall portion 13 c of the housing 13. It is extended (FIG. 4). The base end of the leg portion 42 is integrally fixed to the housing 13, and a fixing portion 41 b provided on the lower surface of the placement portion 41 is fixed to the distal end.

  The daylighting window member 50 is formed using a highly transparent material such as synthetic resin such as glass, acrylic and polycarbonate. The daylighting window member 50 is provided so as to seal the opening of the accommodation space K and to take light from the gap S into the accommodation space K.

  The transparent cover 60 is formed in a thin plate shape using a highly transparent material such as synthetic resin such as glass, acrylic, and polycarbonate, and closes the opening 20 a of the bezel member 20. The transparent cover 60 is disposed so as to go upward as it goes from the front side to the rear side of the vehicle V (FIG. 3). Thereby, it can suppress that the light which hit | transmitted the transparent cover 60 goes directly to a passenger | crew's eye point.

  Here, in this embodiment, the bezel member 20 and the transparent cover 60 are provided integrally. The bezel member 20 and the transparent cover 60 are integrally formed by two-color molding in which two types of resins are poured into one mold, or two members molded with different resins are heated. It is attached integrally by welding which melt | dissolves and joins a junction part by etc. It is not specified here which of these two types of methods is used, but any method can be adopted for integrally forming the bezel member 20 and the transparent cover 60.

  In the present embodiment, assembling of the instrument panel I of the vehicle display device 1 to the facing wall A with the windshield F is performed as shown in FIG. That is, an opening Ia for fitting the bezel member 20 is formed in the opposing wall A of the instrument panel I. First, a bezel in which the transparent cover 60 is integrally provided in the opening Ia as described above. The member 20 is fitted from above as indicated by the arrow D1.

  And the structure of the light guide member 30, the support member 40, the lighting window member 50, and the image projector 10 is assembled | attached from the downward direction to the opposing wall A after the bezel member 20 insertion as the arrow D2 shows. . Here, in the present embodiment, the cushioning material 14 is provided on the entire periphery of the edge of the projection port 13d (FIG. 4) in the image projector 10. Then, when the structure is assembled to the facing wall A, the cushioning material 14 is pressed against the edge of the opening 20a of the bezel member 20, and the opening 20a of the bezel member 20 and the projection port 13d of the image projector 10 are vertically moved. It is done to overlap. By the pressing through the buffer material 14, the projection port 13 d of the image projector 10 is closed and sealed by the bezel member 20 whose opening 20 is blocked by the transparent cover 60.

  An example of such a projected image projected onto the windshield F by the vehicle display device 1 is schematically shown in FIG. In the vehicle display device 1, the bezel member 20 and the transparent cover 60 are integrally provided, and there is no gap between them. For this reason, the edge of the opening 20a of the bezel member 20 does not cast a shadow on the transparent cover 60, and the occurrence of dark spots as compared with the surroundings that cause the above-described streak dark reflection is suppressed. . As a result, such streak-like dark reflection is suppressed around the projection image G1-1. Around the projection image G1-1, there is no projection image G1-2 such as a boundary line between the bezel member 20 and the instrument panel I whose brightness difference is reduced by irradiation of the light guide member 30, or inconspicuous. It will only be reflected thinly.

  Here, in the vehicle display device 1 according to the present embodiment, the projection port 13d is assembled from the inside until the projection port 13d of the image projector 10 is disposed so as to overlap the opening 20a of the bezel member 20. A front protective sheet 17 is disposed in the housing 13. The housing 13 is formed with a drawing port 13e for the pre-assembly protective sheet 17. The drawing opening 13e is a slit that extends slightly longer than the width of the protective sheet 17 before assembly.

  As shown in FIG. 7, the pre-assembly protective sheet 17 is made of a substantially rectangular flexible sheet, and is held at the front edge of the drawing direction D3 from the drawing port 13e by the operator when pulling out. 17a is provided. The pre-assembly protective sheet 17 is disposed in the housing 13 in a state where the gripping portion 17a is extended from the extraction port 13e as an extended portion. The pre-assembly protective sheet 17 is provided so that it can be pulled out from the pull-out port 13e in the pull-out direction D3 by pulling the gripping portion 17a.

  In the present embodiment, the pre-assembly protection sheet 17 made of a flexible sheet is illustrated as an example of the pre-assembly protection sheet referred to in the present invention. However, the pre-assembly protective sheet referred to in the present invention is not limited to this, and may be formed of a plate having a certain thickness, for example, as long as the projection port 13d can be closed from the inside.

  FIG. 8 shows a holding structure of the pre-assembly protective sheet 17 in the vehicle display device 1 by a V1-V1 cross-sectional view in FIG. As shown in FIG. 8, a groove 13f extending along the extraction direction D3 is formed on the inner surfaces of the pair of opposed peripheral wall portions 13c extending in the extraction direction D3 among the peripheral wall portions 13c surrounding the four circumferences of the housing 13. Has been. The pre-assembly protective sheet 17 is held so that both ends of the protective sheet 17 along the drawing direction D3 are fitted in the groove 13f so that the projection port 13d provided with the cushioning material 14 is closed from the inside in the housing 13. Is done.

  Then, as shown in FIG. 5, the image projector 10 is placed so that the projection port 13d is blocked by the bezel member 20 whose opening 20a is blocked by the transparent cover 60, and the projection port 13d overlaps the opening 20a. An arrangement process of arranging in the instrument panel I is performed. Thereafter, a pulling process of pulling the pre-assembly protective sheet 17 in the pulling direction D3 from the pulling port 13e by pulling the gripping part 17a from the pulling port 13e is performed.

  Here, the pull-out port 13e of the housing 13 does not prevent the pre-assembly protection sheet 17 from being pulled out, and after the pre-assembly protection sheet 17 is pulled out, the pull-out port 13e is closed to remove foreign matter from the pull-out port 13e. The following dust-proof members are provided to suppress the intrusion of water. FIG. 9 shows a brush 13g as an example of the dustproof member. FIG. 9 (a) shows the brush 13g before pulling out the pre-assembly protective sheet 17, and FIG. 9 (b) shows the brush 13g after pulling.

  The extraction opening 13e is open in the horizontal direction (including the substantially horizontal direction), and is formed in a slit shape extending in the width direction of the rectangular pre-assembly protective sheet 17 slightly longer than the width. And the brush 13g is planted by this extraction port 13e. Specifically, the brush 13g is implanted over the entire length of the extraction port 13e so that the upper and lower edges 13e-1 and 13e-2 of the extraction port 13e sandwich the pre-assembly protective sheet 17 in the thickness direction over the entire width direction. Has been. Before pulling out the protective sheet 17 before assembly, as shown in FIG. 9A, the brush 13g planted on each edge 13e-1, 13e-2 has its tip part of the protective sheet 17 before assembly. It is in a state of being bent by being pressed against each surface. Then, when the pre-assembly protective sheet 17 is pulled out, as shown in FIG. 9B, the bent brush 13g extends so that the tips overlap when viewed from the outside of the pulling port 13e, and the pulling port 13e. Is supposed to be blocked.

  In addition, the dustproof member provided in the extraction port 13e is not restricted to such a brush 13g, The following another example may be sufficient. FIG. 10 shows a ridge lip 13h as another example of the dustproof member. FIG. 10A shows a protruding lip 13h before the protection sheet 17 before assembly is pulled out, and FIG. 10B shows a protruding lip 13h after the extraction.

  The ridge lips 13h are formed of an elastic member such as rubber, and are provided in a pair so as to oppose each other to the drawing port 13e so as to sandwich the pre-assembly protective sheet 17 in the thickness direction over the entire width direction. The pair of ridge lips 13h are provided opposite to the upper and lower edges 13e-1 and 13e-2 of the extraction port 13e. Each ridge lip 13h extends over the entire length of the extraction port 13e. Before pulling out the protective sheet 17 before assembly, as shown in FIG. 10A, the tip of each protruding lip 13h is pressed against the front and back surfaces of the protective sheet 17 before assembly and is bent and crushed. It is in the state. When the pre-assembly protective sheet 17 is pulled out, as shown in FIG. 10 (b), the convex lip 13h that has been bent and crushed extends, the tips are brought into close contact with each other, and the extraction port 13e is closed. ing.

  FIG. 11 shows a dustproof sheet 13i as still another example of the dustproof member. FIG. 11A shows the dustproof sheet 13i before the pre-assembly protective sheet 17 is pulled out, and FIG. 11B shows the dustproof sheet 13i after the pulling out.

  The dustproof sheet 13i is formed of a flexible sheet material. And one end edge is being fixed to the edge part 13e-1 of the upper side of the extraction opening 13e thru | or its vicinity. Specifically, one end edge is fixed to the inside of the housing 13 of the upper edge portion 13e-1 of the extraction port 13e. The other end edge of the dustproof sheet 13i is a free end. Further, the dustproof sheet 13i has a length between both end edges from a position inside the casing 13 of the upper edge 13e-1 of the extraction opening 13e to a position outside the casing 13 of the lower edge 13e-2. Longer than the length of. Before the protection sheet 17 before assembly is pulled out, as shown in FIG. 11A, the dustproof sheet 13i is moved out of the extraction port 13e with its free end in contact with the upper surface of the protection sheet 17 before assembly. It is pulled out. When the pre-assembly protective sheet 17 is pulled out, as shown in FIG. 11 (b), the free end of the dustproof sheet 13i hangs down below the pull-out port 13e to block the pull-out port 13e.

  Next, an example of an effect | action of the display apparatus 1 for vehicles of this embodiment is demonstrated.

  As described with reference to FIG. 5, until the projection port 13 d is assembled to the bezel member 20 so as to overlap the opening 20 a of the bezel member 20 closed by the transparent cover 60, the image projector 10 has no projection port. A pre-assembly protective sheet 17 for closing 13d from the inside is incorporated. Then, after this arrangement, the pre-assembly protective sheet 17 is pulled out from the pull-out port 13e by pulling the gripping portion 17a. The pre-assembly protective sheet 17 ensures the dustproof property of the image projector 10 even before the assembly. Further, since the pre-assembly protection sheet 17 is pulled out after the assembly, the pre-assembly protection sheet 17 does not reduce the transmission of projection light at the projection port 13d. Thus, according to the present embodiment, the dustproof property of the image projector 10 can be ensured even before assembly.

  In addition, according to the present embodiment, the pull-out port 13e does not prevent the pre-assembly protection sheet 17 from being pulled out, and prevents foreign matter from entering the pull-out port 13e after the pre-assembly protection sheet 17 is pulled out. Since the dustproof member to suppress is provided, dustproofness can be ensured also about this extraction port 13e. Although not specified here, any of the above-described brush 13g, protruding lip 13h, and dustproof sheet 13i can be used as the dustproof member.

  Since said brush 13g employable as a dust-proof member has flexibility, pulling-out of the pre-assembly protective sheet 17 is not hindered. That is, according to this brush 13g, the pull-out property and the dust-proof property of the protective sheet 17 before assembly can be made compatible.

  Further, since the above-mentioned convex lip 13h that can be employed as a dust-proof member also has flexibility, the pull-out of the protective sheet 17 before assembly is not hindered. In other words, the pull-out property and the dust-proof property of the protective sheet 17 before assembling can be made compatible by the protruding lip 13h.

  In addition, the dust-proof sheet 13i that can be used as a dust-proof member has one end edge as a free end and has flexibility, so that the pre-assembly protection sheet 17 cannot be pulled out. That is, even with this dustproof sheet, both the pull-out property and the dustproof property of the protective sheet before assembly can be achieved.

  Next, a second embodiment of the present invention will be described. The second embodiment is equivalent to the first embodiment except that the instrument panel I also serves as the bezel member 20 described above, and the image projector 10 is directly assembled to the instrument panel I. It has become a thing. Therefore, in the following, the second embodiment will be described with reference to FIG. 12 and FIG. 13 while focusing on differences from the first embodiment.

  FIG. 12 schematically shows an instrument panel according to the second embodiment of the present invention. In FIG. 12, the same components as those in the first embodiment shown in FIG. 5 are denoted by the same reference numerals as those in FIG. Duplicate explanation is omitted.

  As described above, the instrument panel I of the present embodiment also serves as the bezel member 20 in the first embodiment described above. And the display apparatus 2 for vehicles of this embodiment remove | excludes the bezel member 20 and the transparent cover 60 from the display apparatus 1 for vehicles of 1st Embodiment.

  In the present embodiment, an opening Ia for the image projector 10 to project an image onto the windshield F is provided on the wall A facing the windshield F. A transparent cover 60 that closes the opening Ia is integrally provided on the opposing wall A of the instrument panel I. The facing wall A and the transparent cover 60 are integrally formed by the above-described two-color molding and two-color molding, or are integrally attached by welding. Although not specified here, any method can be adopted for integrally forming the facing wall A and the transparent cover 60.

  In the vehicle display device 2 of the present embodiment, the construction of the light guide member 30, the support member 40, the daylighting window member 50, and the image projector 10 is formed on the opposing wall A of the instrument panel I, and an arrow D4 is provided. As shown, assembled from below. This assembly is performed so that the cushioning material 14 is pressed against the edge of the opening Ia of the opposing wall A, and the opening Ia and the projection port 13d of the image projector 10 overlap in the vertical direction. By the pressing through the cushioning material 14, the projection port 13 d of the image projector 10 is closed and sealed by the instrument panel I in which the opening Ia is closed by the transparent cover 60. Thereafter, the pre-assembly protective sheet 17 is pulled out by pulling the gripping portion 17a.

  As described above, in the vehicular display device 2 according to the present embodiment, first, the image projector 10 is closed with the projection port 13d and the projection port 13d by the instrument panel I in which the opening Ia is closed with the transparent cover 60. Is placed in the instrument panel I so as to overlap the opening Ia. Thereafter, a pulling process is performed in which the pre-assembly protective sheet 17 is pulled out from the pulling opening 13e by pulling the gripping part 17a.

  FIG. 13 schematically shows a projection image projected onto the windshield F from the opening Ia of the instrument panel I in FIG. In this instrument panel I, the opposing wall A and the transparent cover 60 are integrally provided, and there is no gap between them. For this reason, the edge of the opening Ia of the opposing wall A does not cast a shadow on the transparent cover 60, and the occurrence of dark spots as compared with the surroundings that cause the above-described streak dark reflection is suppressed. . As a result, such dark streak is suppressed around the projection image G2-1. Further, since the instrument panel I also serves as the bezel member 20 in the first embodiment described above, there is no reflection of the boundary line between the bezel member 20 and the instrument panel I, and the projected image G2-1. Visibility is further improved.

  Needless to say, the dust-proof property of the image projector 10 can be ensured by the second embodiment described above even before the assembly, as in the first embodiment described above. Also in the second embodiment, as a dust-proof member of the drawing port 13e of the pre-assembly protective sheet 17, the brush 13g shown in FIG. 9, the ridge lip 13h shown in FIG. 10, and FIG. Any of the dustproof sheets 13i shown in FIG.

  Although the present invention has been described with reference to the preferred embodiment, the image projector, the vehicle display device, and the method of assembling the image projector of the present invention are not limited to the configuration of the above embodiment.

  In the above-described embodiment, the light guide member 30 is supported by the support member 40 integrated with the image projector 10, and the light guide member 30 is assembled to the instrument panel or the bezel member together with the image projector 10. However, it is not limited to this. For example, a member that supports the light guide member 30 may be provided on the instrument panel or the bezel member, and the image projector 10 may be assembled on the instrument panel or bezel member to which the light guide member 30 is already assembled. .

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention. As long as the configuration of the image projector, the vehicle display device, and the method of assembling the image projector of the present invention is provided even by such a modification, it is, of course, included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1, 2 Display apparatus for vehicles 10 Image projector 13 Case (an example of a case)
13d Projection port 13e Pull-out port 13e-1 A pair of edges 13g Brush 13h Projection lip 13i Dust-proof sheet 15 Bezel body 17 Pre-assembly protection sheet 17a Grasping part (an example of an extension part)
DESCRIPTION OF SYMBOLS 20 Bezel member 20a, Ia Opening 21 Front bezel part 22 Falling wall part 30 Light guide member 30a Light incident surface 40 Support member 50 Daylighting window member 60 Cover I Instrument panel A Opposite wall F Windshield K Housing space S Gap V Vehicle

Claims (8)

Through the opening provided on the wall facing the windshield of the instrument panel of the vehicle and closed with a transparent cover, or through the opening provided on the bezel member fitted in the facing wall and closed with the transparent cover An image projector that projects an image on a windshield,
A box-like case in which a projection port arranged to overlap the opening is formed;
A pre-assembly protective sheet disposed in the case so as to close the projection port from the inside,
The case is formed with a drawing port from which a part of the protective sheet before assembly is extended,
The image projector according to claim 1, wherein the pre-assembly protective sheet is provided so as to be able to be pulled out from the drawing port by pulling an extended portion extending from the drawing port.   2. The image projector according to claim 1, wherein a dust-proof member is provided at the pull-out port to suppress entry of foreign matter from the pull-out port after the pre-assembly protective sheet is pulled out. . The extraction port is formed in a slit shape extending in the width direction of the protective sheet before assembly,
The image projector according to claim 2, wherein the dustproof member includes a brush planted in the extraction port so as to sandwich the protective sheet before assembly in the thickness direction over the entire width direction. The extraction port is formed in a slit shape extending in the width direction of the protective sheet before assembly,
The dust-proof member is composed of a pair of flexible ridges having flexibility, which are provided so as to protrude from the drawing port so as to sandwich the protective sheet before assembly in the thickness direction over the entire width direction. The image projector according to claim 2. The outlet is open in the horizontal direction;
The dust-proof member is formed of a flexible sheet material, one end edge is fixed to the upper edge of the extraction port or the vicinity thereof, the other end edge is a free end, and the one end edge to the other end edge The image projector according to claim 2, comprising a dustproof sheet having a length that is at least longer than a vertical width of the extraction port. A display device for a vehicle having an image projector disposed in an instrument panel of the vehicle,
The display device for vehicles, wherein the image projector is the image projector according to any one of claims 1 to 5. An assembly for assembling an image projector, which is provided on a bezel member fitted on a wall facing a windshield of an instrument panel of a vehicle and projects an image on the windshield through an opening closed by a transparent cover, to the bezel member A method of attaching,
The image projector is an image projector according to any one of claims 1 to 5,
An arrangement process in which the image projector is disposed in the instrument panel so that the projection opening is closed by the bezel member whose opening is closed by the transparent cover, and the projection opening overlaps the opening; ,
A pulling process of pulling out the pre-assembly protective sheet from the pulling port by pulling the extension part after the arranging process;
An assembling method characterized by comprising: An assembly method for assembling an image projector for projecting an image on the windshield through an opening provided on a wall facing the windshield in an instrument panel of a vehicle and closed with a transparent cover. ,
The image projector is an image projector according to any one of claims 1 to 5,
Arrangement process of arranging the image projector in the instrument panel so that the projection port is closed by the instrument panel in which the opening is closed by the transparent cover and the projection port overlaps the opening When,
A pulling process of pulling out the pre-assembly protective sheet from the pulling port by pulling the extension part after the arranging process;
An assembly method characterized by comprising:

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