JP6304756B2 - Bezel body and vehicle display device - Google Patents

Description

  The present invention relates to a bezel body disposed on an instrument panel of a vehicle and a vehicle display device including the bezel body.

  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. 7, the vehicle display device 700 described in Patent Document 1 is attached in an instrument panel I having an opening H provided on a wall A facing the windshield F, and the front display through the opening H. An image is projected onto the glass F. In such a vehicular display device 700, for example, a transparent cover C that closes the opening H in order to prevent dust or moisture from entering the opening H may be provided. The light may be reflected by the cover C and head toward the passenger's eye point EP, which may cause discomfort.

  Therefore, a vehicle display device 800 shown in FIG. 8 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 an opening H formed in a wall A facing the windshield F, and a front bezel portion W provided on the front side of the opening H extends from the front side to the rear side (left side in FIG. 8). A light-transmitting falling wall portion Wa that gradually goes downward as it goes from side to side) is formed. The opening H 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 projects an image on the windshield F through the opening H. In such a configuration, since the descending wall portion Wa 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, and It can suppress that the reflected external light goes to a passenger's eye point EP.

JP 2007-148092 A

  In the above-described configuration, outside light does not strike the vicinity of the descending wall portion Wa in the front bezel portion W, so that a difference in brightness between the descending wall portion Wa and its peripheral portion becomes large, thereby reflecting on the windshield F. The inconvenience can be conspicuous. Therefore, a configuration in which the descending wall portion Wa is made of a light transmissive material and the light guide member 802 is disposed below the descending wall portion Wa to illuminate the descending wall portion Wa from the inner surface side is conceivable. According to this structure, the light which permeate | transmitted the descent | fall wall part Wa can go to the windshield F, and reflection can be made inconspicuous, and the discomfort given to a passenger can be suppressed.

  However, in the vehicle display device 800, when the upper surface shape of the light guide member 802 and the lower surface shape of the descending wall portion Wa are different, the distance between the upper surface of the light guide member 802 and the lower surface of the descending wall portion Wa is uniform. Not. For this reason, the light incident on the descending wall portion Wa from the light guide member 802 is also not uniform, and there is a problem that color unevenness occurs in the descending wall portion Wa.

  An object of the present invention is to provide a bezel body and a vehicle display device that can effectively suppress discomfort given to a passenger by making the reflection on the windshield less noticeable.

  In order to solve the above-mentioned problems and achieve the object, the invention described in claim 1 is fitted into an instrument panel of a vehicle, and an image projector disposed in the instrument panel projects an image on a windshield. A bezel member that forms part or all of the peripheral edge of the opening, and a plate-shaped light guide member that is disposed below the front bezel portion of the bezel member that is disposed on the front side of the vehicle with respect to the opening. The front bezel portion is disposed above the instrument panel so that a front end of the vehicle has a gap with the instrument panel, and the rear of the vehicle A light-transmitting descending wall portion provided so as to gradually go down and reach the opening as it goes to the side, and the light guide member is incident from the gap. That with light guided to illuminate the descending wall portion, a bezel body, characterized in that the upper surface has a shape along the lower surface of the descending wall.

  According to a second aspect of the present invention, a reflecting portion that reflects light by changing a course in the thickness direction of the light guide member is formed in a predetermined range on the rear side of the vehicle on the lower surface of the light guide member. The bezel body according to claim 1.

  A third aspect of the invention is the bezel body according to the first or second aspect, further comprising a brightness enhancement film disposed on the upper surface of the light guide member and formed by arranging a plurality of prisms.

  According to a fourth aspect of the present invention, there is provided a brightness enhancement film disposed on the upper surface of the light guide member and formed by arranging a plurality of prisms extending along the front-rear direction of the vehicle. 2. The bezel body according to claim 1, wherein a reflection portion in which a plurality of prisms extending in the left-right direction of the vehicle are arranged in a predetermined range on the rear side of the vehicle.

  According to a fifth aspect of the present invention, there is provided an image projector disposed in an instrument panel of a vehicle, and a peripheral edge of an opening that is fitted in the instrument panel and that the image projector projects an image on a windshield. A vehicle display device comprising a bezel body having a bezel member forming part or all, wherein the bezel body is configured by the bezel body according to any one of claims 1 to 4. It is the display apparatus for vehicles characterized by these.

  According to the first and fifth aspects of the present invention, the front end portion of the front bezel portion is disposed above the instrument panel so that a gap is formed between the front bezel portion and the light guide. Since the member is provided below the front bezel portion, the light guide member can guide the light incident from the gap through the windshield to illuminate the descending wall portion. Furthermore, since the upper surface of the light guide member is shaped along the lower surface of the descending wall portion, the distance between the upper surface of the light guide member and the lower surface of the descending wall portion is uniform, and color unevenness of the descending wall portion can be suppressed. . Therefore, the reflection of the descending wall portion on the windshield can be made inconspicuous, and the discomfort given to the passenger can be effectively suppressed.

  According to the second aspect of the present invention, since the reflecting portion is formed in the predetermined range on the rear side of the vehicle on the lower surface of the light guide member to reflect the light in the thickness direction of the light guide member. The guided outside light can be easily reflected toward the descending wall portion, and light can be efficiently emitted from the light guide member toward the descending wall portion. Therefore, the reflection of the descending wall portion on the windshield can be made more inconspicuous, and the discomfort given to the passenger can be effectively suppressed.

  According to the third aspect of the present invention, since the brightness enhancement film formed by arranging a plurality of prisms is arranged on the upper surface of the light guide member, the efficiency is further improved from the light guide member toward the descending wall portion. Can irradiate well.

  According to the fourth aspect of the present invention, the reflecting portion in which a plurality of prisms extending in the left-right direction of the vehicle are arranged in a predetermined range on the lower surface of the light guide member on the rear side of the vehicle. In addition, a brightness enhancement film formed by arranging a plurality of prisms extending along the front-rear direction of the vehicle is disposed on the upper surface of the light guide member. Thereby, the light which spreads in the left-right direction and the front-back direction of the vehicle can be efficiently irradiated toward the descending wall portion while changing the course in the plate thickness direction of the light guide member.

It is a perspective view which shows a mode that the display apparatus for vehicles concerning one 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 side of vehicles. It is the II-II sectional view taken on the line of the vehicle display device of FIG. It is a disassembled perspective view of the display apparatus for vehicles of FIG. (A) is an expanded sectional view explaining advancing of the light in the light guide member of the display apparatus for vehicles of FIG. 1, (B) is the II sectional view taken on the line of (A). It is a back perspective view of the light guide member shown in FIG. It is sectional drawing which shows the display apparatus for vehicles of a prior art. It is sectional drawing which shows the display apparatus for vehicles of another prior art.

  A bezel body and a vehicle display device according to an embodiment of the present invention will be described with reference to FIGS. The vehicle display device 1 according to the present embodiment is attached to an instrument panel I of a vehicle V and used as a head-up display device that projects an image on a windshield F as shown in FIGS. Is. In addition, the front-back direction of the vehicle V in this embodiment, the left-right direction, the front side and back side in the front-back direction, and upper and lower sides are as shown in FIG.1 and FIG.3.

  As shown in FIGS. 3 and 4, the vehicle display device 1 includes an image projector 10 disposed in the instrument panel I of the vehicle V, and a bezel body 15 disposed in the instrument panel I. I have.

  As shown in FIG. 3, 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 synthetic resin that houses the display source 11 and the reflection unit 12. And a housing 13 made of metal. 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 an opening 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 the image onto the windshield F through the opening 13d. Thereby, the passenger of the vehicle V can be visually recognized as an image displayed on the windshield F.

  As shown in FIGS. 3 and 4, the bezel body 15 includes a bezel member 20, a light guide member 30, a brightness enhancement film 40, a support member 50 as a case member, and a cover 60. .

  The bezel member 20 is made of, for example, a semi-transparent (light transmissive) synthetic resin and has an annular shape in plan view having an opening 20a at the center. Further, the bezel member 20 is provided so as to be gradually lowered as it goes from the outer peripheral edge to the inner peripheral edge, and to be inclined so that the inclination thereof increases as it approaches the inner peripheral edge. The bezel member 20 is fitted in a hole provided in the instrument panel I, and the image projector 10 disposed in the instrument panel I covers the entire periphery of the opening 20a for projecting an image on the windshield F. Forming.

  The front bezel portion 21 disposed on the front side of the vehicle V with respect to the opening 20a in the bezel member 20 has the instrument 21 so that a gap S is formed between the front end portion 21a of the vehicle V and the instrument panel I. Arranged above panel I. Further, the front bezel portion 21 has a descending wall portion 22 that curves downward so as to gradually go downward and reach the opening 20a as it goes from the front side to the rear side of the vehicle V, and its inclination increases as it approaches the opening 20a. Have.

  When the bezel member 20 is fitted into the instrument panel I, a part of the front side of the outer peripheral edge of the bezel member 20 (that is, the end 21a of the front bezel portion 21 on the front side of the vehicle V) is more than the instrument panel I. It arrange | positions upwards (FIG. 2), and arrange | positions so that other parts other than the said part of an outer periphery may be connected with the instrument panel I smoothly (FIG. 1). At this time, the opening 20a of the bezel member 20 and the opening 13d of the image projector 10 are arranged so as to overlap in the vertical direction. In addition, the bezel member 20 is subjected to, for example, the adjustment of color and surface processing similar to the instrument panel I in order to prevent the difference in reflection on the windshield F of the instrument panel I from being noticeable. Has been done.

  The light guide member 30 is formed in a substantially rectangular plate shape in plan view (FIG. 4) using a material with high transparency such as synthetic resin such as glass, acrylic, and polycarbonate. The light guide member 30 is disposed below the front bezel portion 21 and illuminates the front bezel portion 21 (that is, the descending wall portion 22) by guiding light incident from the gap S described above. As shown in FIG. 5, the light guide member 30 is formed such that the plate thickness dimension decreases from the front side toward the rear side.

  Further, the upper surface of the light guide member 30 is provided in a shape along the lower surface of the front bezel portion 21 having the descending wall portion 22. More specifically, like the lower surface of the front bezel portion 21, the upper surface of the light guide member 30 gradually goes downward as it goes from the front side to the rear side of the vehicle V, and the inclination increases as it approaches the rear side. Curved and provided. Further, the distance between the upper surface of the light guide member 30 and the lower surface of the descending wall portion 22 is made as small as possible.

  As shown in FIGS. 5 and 6 and the like, a reflective portion 30b in which a plurality of wedge-shaped prisms extending in the left-right direction of the vehicle V are arranged is formed in a predetermined range on the rear side of the lower surface of the light guide member 30. ing. The plurality of prisms of the reflecting portion 30b are arranged along the front-rear direction of the vehicle V. The light reaching the reflecting portion 30 b is reflected by changing the path in the thickness direction of the light guide member 30. In addition, the reflection part 30b should just be formed in the suitable range of the back side at least according to the refractive index, shape, etc. of the light guide member 30, and may be formed in the whole lower surface.

  The brightness enhancement film 40 is attached to the upper surface of the light guide member 30. The brightness enhancement film 40 is formed by arranging a plurality of fine prisms having a wedge-shaped cross section extending in the front-rear direction of the vehicle V on the upper surface thereof. The plurality of prisms of the brightness enhancement film 40 are arranged along the left-right direction of the vehicle V. Light that enters from the lower surface of the brightness enhancement film 40 and exits from the upper surface is refracted by changing the path in the thickness direction of the light guide member 30.

  The support member 50 is disposed below the light guide member 30 and supports the light guide member 30. On the upper surface of the support member 50, a reflective portion 51 that is glossed is provided so as to reflect light from above. Further, the support member 50 is disposed such that the front end is provided at substantially the same height as the upper surface of the instrument panel I, and the front end 30a of the light guide member 30 is opposed to the gap S. Yes. Thereby, the external light irradiated from the front side through the windshield F can be taken in from the front end surface 30a of the light guide member 30 through the gap S. The support member 50 is fixed to a pair of leg portions 13 e that protrude forward from the peripheral wall portion 13 c of the housing 13.

  The cover 60 is formed in a thin plate shape using a highly transparent material such as synthetic resin such as glass, acrylic, polycarbonate, and the like, and is fixed to the periphery of the opening 20a so as to close the opening 20a of the bezel member 20. Attached. The 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 control that the light which hits cover 60 goes directly to a passenger's eye point.

  Next, a process in which external light taken into the light guide member 30 is emitted toward the front bezel portion 21 will be described with reference to FIG. First, external light that has passed through the windshield F and entered from the gap S enters the front end face 30 a of the light guide member 30. When the light reaches the upper surface or the lower surface of the light guide member 30, the light is emitted from the upper surface or the lower surface when the incident angle is smaller than a predetermined value, and is totally reflected when the incident angle is less than the predetermined value. Proceed toward the rear side of the. As shown in FIG. 5B, the light emitted from the upper surface is refracted by the prism formed on the brightness enhancement film 40 and changes its path in the thickness direction.

  The light emitted from the lower surface is reflected upward by the reflecting portion 51 of the support member 50 and enters the light guide member 30 again. When the light traveling backward in the light guide member 30 reaches the reflection part 30b on the lower surface, it is reflected by the prism of the reflection part 30b as shown in FIG. And is emitted from the upper surface.

  As described above, outside light is guided from the front side toward the rear side by the light guide member 30 and is emitted toward the upper front bezel portion 21. The light that reaches the descending wall portion 22 in the front bezel portion 21 passes through the descending wall portion 22 toward the windshield F and is reflected in the descending wall portion 22.

  According to the above-described embodiment, the front end portion 21a of the front bezel portion 21 is disposed above the instrument panel I so as to leave a gap S between the front bezel portion 21 and the light guide member. Since 30 is provided below the front bezel portion 21, the light guide member 30 can guide light incident from the gap S through the windshield F to illuminate the descending wall portion 22. Furthermore, since the upper surface of the light guide member 30 has a shape along the lower surface of the descending wall portion 22, the distance between the upper surface of the light guide member 30 and the lower surface of the descending wall portion 22 is uniform, and color unevenness of the descending wall portion 22 is achieved. Can be suppressed. Therefore, the reflection of the descending wall portion 22 on the windshield F can be made inconspicuous, and the discomfort given to the passenger can be effectively suppressed. In addition, since the distance between the upper surface of the light guide member 30 and the lower surface of the descending wall portion 22 is as small as possible, loss of light from the light guide member 30 toward the descending wall portion 22 in the air can be suppressed.

  In addition, according to the above-described embodiment, the reflecting portion 30b that reflects the light guide member 30 by changing the path in the thickness direction of the light guide member 30 is formed in a predetermined range on the lower surface of the light guide member 30 on the rear side of the vehicle V. Therefore, the guided outside light can be easily reflected toward the descending wall portion 22, and light can be efficiently emitted from the light guide member 30 toward the descending wall portion 22. Therefore, the reflection of the descending wall portion 22 on the windshield F can be made more inconspicuous, and the discomfort given to the passenger can be effectively suppressed.

  Further, according to the above-described embodiment, since the brightness enhancement film 40 in which a plurality of prisms are arranged is arranged on the upper surface of the light guide member 30, the light guide member 30 is directed toward the descending wall portion 22. Light can be irradiated even more efficiently.

  Further, according to the above-described embodiment, the prism of the reflecting portion 30b extends in the left-right direction of the vehicle V, and the prism of the brightness enhancement film 40 extends in the front-rear direction of the vehicle V. That is, the extending direction of the prism of the brightness enhancement film 40 is a direction rotated by 90 ° with respect to the extending direction of the prism of the reflecting portion 30b. Thereby, the path of light spreading in the front-rear direction by the reflecting portion 30b can be changed in the plate thickness direction (FIG. 5A), and the path of light spreading in the left-right direction by the brightness enhancement film 40 can be changed in the plate thickness direction ( FIG. 5 (B)). Therefore, the light spreading in the left-right direction and the front-rear direction of the vehicle can be efficiently irradiated toward the descending wall portion 22 by changing the course in the plate thickness direction of the light guide member.

  In addition, according to embodiment mentioned above, although the reflection part 30b and the brightness enhancement film 40 were provided in the light guide member 30, it does not restrict to this. The light guide member 30 only needs to have a shape whose upper surface is along the lower surface of the descending wall portion 22, and it is not necessary to provide the reflecting portion 30 b or the brightness increasing film 40, either the reflecting portion 30 b or the brightness increasing film 40. Only one of them may be provided.

  Moreover, according to embodiment mentioned above, although the prism of the brightness enhancement film 40 was provided along the front-back direction, it is not restricted to this. You may provide along the left-right direction.

  Further, according to the above-described embodiment, the bezel member 20 is formed in an annular shape in plan view, and the front bezel portion 21 is a part of the bezel member 20, but this is not restrictive. For example, the bezel member 20 may be configured by only the front bezel portion 21, and only the periphery of the opening 20 a on the front side of the vehicle V may be formed, and the remaining periphery of the opening 20 a may be formed by the instrument panel I.

  Further, according to the above-described embodiment, the entire bezel member 20 is formed of a light-transmitting synthetic resin, but is not limited thereto, and at least the descending wall portion 22 is light-transmitting. I just need it.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Display apparatus for vehicles 10 Image projector 15 Bezel body 20 Bezel member 20a Opening 21 Front bezel part 21a End part 22 Falling wall part 30 Light guide member 30b Reflection part 40 Brightness enhancement film F Windshield I Instrument panel S Gap V Vehicle

Claims (5)

A bezel member that is fitted into an instrument panel of a vehicle and an image projector disposed in the instrument panel forms part or all of the periphery of an opening for projecting an image on a windshield;
A plate-shaped light guide member disposed below a front bezel portion disposed on the front side of the vehicle with respect to the opening in the bezel member;
The front bezel portion is disposed above the instrument panel so that the front end of the vehicle has a gap between the front panel and the vehicle. A light-transmitting descending wall provided so as to gradually go downward and reach the opening;
The light guide member guides light incident from the gap to illuminate the descending wall portion, and the upper surface has a shape along the lower surface of the descending wall portion. The reflective part which changes a course in the plate | board thickness direction of the said light guide member, and reflects light is formed in the predetermined range of the back side of the said vehicle on the lower surface of the said light guide member. The bezel body described in 1.   The bezel body according to claim 1 or 2, further comprising a brightness enhancement film disposed on an upper surface of the light guide member and formed by arranging a plurality of prisms. A brightness enhancement film formed on a plurality of prisms arranged on the upper surface of the light guide member and extending along the front-rear direction of the vehicle,
2. The bezel body according to claim 1, wherein a reflection portion in which a plurality of prisms extending in a left-right direction of the vehicle are arranged in a predetermined range on a lower surface of the light guide member on a rear side of the vehicle. . An image projector disposed in an instrument panel of a vehicle, and a bezel member that is fitted into the instrument panel and forms part or all of a peripheral edge of an opening for projecting an image onto a windshield by the image projector A vehicle display device comprising: a bezel body having
The said bezel body is comprised by the bezel body of any one of Claims 1-4. The vehicle display apparatus characterized by the above-mentioned.

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