JP6284233B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle that performs projection on a windshield.

  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 in which an opening H is provided in a wall A facing the windshield F, and the windshield through the opening H. An image is projected onto F. In such a vehicular display device 700, for example, when a transparent cover C is provided in the opening H in order to prevent dust and moisture from entering the opening H, external light such as sunlight is not emitted. There is a problem in that an uncomfortable feeling is caused by reflecting on the cover C and reaching the passenger's eye point EP.

  Then, the following structure is considered as a display apparatus for vehicles which can suppress discomfort to a passenger. As shown in FIG. 8, the vehicle display device 800 is provided in the instrument panel I. This instrument panel I has an opening H adjacent to the lower wall of the wall A facing the windshield F and a light-transmitting descending wall W that gradually goes downward as it goes from the front to the rear of the vehicle. And are provided. The opening H is provided with a cover C that gradually moves upward from the front to the rear 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 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 and It is possible to suppress the reflected external light from reaching the passenger's eye point EP.

JP 2007-148092 A

  In the configuration described above, in the instrument panel I, since the outside light is not irradiated in the vicinity of the opening H of the descending wall portion W, the descending wall portion W becomes dark, and the brightness difference between the cover C and the vicinity of the opening H of the descending wall portion W is dark. The problem that the reflection on the windshield F becomes conspicuous due to the increase in the size of the windshield. Therefore, the descending wall portion W is made of a light transmissive material, and a light guide member 802 that guides the incident light and emits it is disposed inside (lower side) the descending wall portion W, so that the light guide member 802 is disposed. Thus, a configuration in which the vicinity of the opening H of the descending wall W is illuminated is conceivable. According to such a configuration, the descending wall portion W becomes brighter, the difference in brightness between the cover C and the vicinity of the opening H of the descending wall portion W is reduced, and the reflection on the windshield F is inconspicuous. Discomfort can be suppressed.

  However, in the vehicle display device 800, since the light guide member 802 is formed using a relatively hard material such as resin or glass, in consideration of safety, for example, the vehicle is a collision object such as a pedestrian. It has been required to reduce the impact on the collision object when it collides.

  Accordingly, the present invention focuses on the above-described problems, and provides a vehicle display device that can make the reflection on the windshield inconspicuous and can reduce the impact on a collision object. The purpose is to do.

  In order to solve the above-described problem, the invention described in claim 1 includes a light-transmitting descending wall portion that gradually goes downward as it goes from the front to the rear of the vehicle, and an opening adjacent to the lower end of the descending wall portion. Is a vehicle display device disposed in an instrument panel provided on a wall facing the windshield, and is disposed below the opening and projects an image onto the windshield through the opening. A light guide member that is disposed inside the descending wall portion and guides light toward the descending wall portion, and is provided to project forward from the image projector so as to support the light guide member from below. And a support member provided with a breaking portion that is broken so that the light guide member falls due to a force applied when the vehicle collides. is there

  The invention described in claim 2 is the invention described in claim 1, wherein the support member includes a mounting portion on which the light guide member is mounted, the mounting portion, and the image projector. And a leg portion to be connected.

  The invention described in claim 3 is the invention described in claim 2, wherein the breaking portion is formed in the center portion in the front-rear direction of the vehicle along the left-right direction of the vehicle. It is characterized by being.

  The invention described in claim 4 is the invention described in claim 2 or 3, wherein the leg portion is connected to a position where the leg portion is connected to the image projector or to the mounting portion described above. The rupture portion is formed in the vicinity of the position.

  The invention described in claim 5 is the invention described in claim 3 or 4, characterized in that the fracture portion is a wedge-shaped notch that gradually narrows from the surface toward the inside. It is.

  According to the first aspect of the present invention, the support member is provided so as to protrude forward from the image projector so as to support the light guide member from below, and the support member is subjected to a force applied at the time of a vehicle collision. Since a breaking portion is provided that breaks so that the light guide member falls, for example, when a collision object such as a pedestrian's head hits the light guide member when the vehicle collides, the light guide member is guided. Before the member is broken, the support member breaks to absorb the impact. For this reason, the impact on the collision object can be reduced.

  According to the invention described in claim 2, since the light guide member is placed on the placement portion of the support member, the light guide member can be easily dropped when the support member breaks.

  According to the invention described in claim 3, since the breaking portion is formed along the left-right direction of the vehicle at the center portion in the front-rear direction of the vehicle, the breaking portion is broken. Therefore, when the vehicle collides, the mounting portion breaks and absorbs the impact before the light guide member is destroyed. It is possible to reduce the impact on the collision object.

  According to the invention described in claim 4, since the leg portion is formed with a break portion in the vicinity of the position where the leg portion is connected to the image projector or the position where the leg portion is connected to the placement portion, When the rupture part breaks, the rupture part is provided at a position where the light guide member is easily dropped, and when the vehicle collides, the leg part ruptures before the light guide member is destroyed. Can be absorbed, and the impact on the collision object can be reduced.

  According to the fifth aspect of the present invention, since the fracture portion is a notch formed in a wedge shape, the stress is easily concentrated, and the fracture is more easily caused when a force is applied at the time of collision. Thus, the support member can be more reliably broken at the notch.

It is a disassembled perspective view which shows the display apparatus for vehicles concerning one Embodiment of this invention. It is sectional drawing which shows the state by which the vehicle display apparatus shown by FIG. 1 was attached to the vehicle. It is a perspective view which shows the instrument panel to which the display apparatus for vehicles shown by FIG. 1 is attached. It is sectional drawing which shows typically the display apparatus for vehicles shown by FIG. It is a perspective view which shows typically the surface below the mounting part in the display apparatus for vehicles shown by FIG. It is a perspective view which expands and shows the leg part in the display apparatus for vehicles shown by 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.

  A vehicle display device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, the vehicle display device 1 of the present embodiment is attached to the inside of the instrument panel I of the vehicle V, and is used as a head-up display device that projects onto the windshield F. Is. As shown in FIGS. 3 and 4, the instrument panel I includes a light-transmitting falling wall portion W that gradually goes downward as it goes from the front to the rear of the vehicle V on the wall A facing the windshield F. And an opening H adjacent to the lower end of the descending wall portion W is provided. In addition, a transparent thin plate-like cover C is attached to the opening H so as to gradually move upward as it goes from the front side to the rear side of the vehicle V to prevent dust, moisture, etc. from entering the opening H. ing. In the present embodiment, the up-down direction, the front-rear direction, and the left-right direction correspond to the up-down direction, the front-rear direction, and the left-right direction of the vehicle V.

  The vehicular display device 1 is disposed on the inner side (lower side) of the descending wall portion W and guides light toward the descending wall portion W. The image projector 2 projects an image onto the windshield F through the opening H. It comprises a member 3 and a support member 4 provided to project forward from the image projector 2 so as to support the light guide member 3 from below.

  The image projector 2 includes a display source 21a for projecting an image, a reflection unit 21b that reflects an image from the display source 21a, and a housing 22 that accommodates the display source 21a and the reflection unit 21b. ing. As shown in FIG. 1, the housing 22 is formed in a box shape using a synthetic resin, and has a top wall 22a, a bottom wall 22b, a peripheral wall 22c, and an opening 22d. The opening 22d is arranged so as to overlap the opening H provided in the facing wall A in the vertical direction. The image projector 2 reflects the image projected by the display source 21a by the reflecting portion 21b and projects it onto the windshield F through the opening 22d. Thereby, the passenger of the vehicle V recognizes as an image displayed on the windshield F.

  The light guide member 3 is formed in a substantially rectangular plate shape in plan view using a highly transparent material such as glass or resin. Further, in a cross-sectional view in the front-rear direction, the front side is formed thicker, the rear side is formed thinner, and the part between the thicker part and the thinner part gradually becomes thinner from the front toward the rear. Is formed. In other words, as shown in FIG. 4, the surface of the light guide member 3 on the mounting portion 41 side, which will be described later, is formed in a flat shape, and the surface on the descending wall portion W side is from the front to the rear in the middle portion in the front-back direction. An inclined surface that gradually descends as it goes is formed.

  Further, as shown by an arrow L in FIG. 4, the light guide member 3 receives external light such as sunlight at the end surface on the front side of the vehicle, guides it to the end portion on the rear side of the vehicle, and lowers light transmittance. It is provided to emit light toward the wall W. Thereby, the opening H vicinity of the falling wall part W can be illuminated from an inner side. With such a configuration, the vicinity of the opening H of the descending wall portion W that is not irradiated with external light can be brightened by illuminating from the inside, and the difference in brightness between the cover C and the vicinity of the opening H of the descending wall portion W can be reduced. The reflection on the glass F can be made inconspicuous, and discomfort to the passenger can be suppressed.

  The support member 4 is formed using a synthetic resin, and includes a placement portion 41 on which the light guide member 3 is placed, and two leg portions 42 that connect the placement portion 41 and the image projector 2. doing. The placement portion 41 is formed in a plate shape and is inclined along the descending wall portion W. The mounting portion 41 is bent so that the rear end portion is along the upper surface wall 22 a of the housing 22. The two leg portions 42 are formed integrally with the housing 22 of the image projector 2, and one end extends forward and upward from both left and right ends of the front surface of the peripheral wall 22 c. It is bent upward and the other end is fixed to a fixing part 411 (to be described later) of the mounting part 41.

  Further, fixing portions 411 for fixing the other end side of the leg portion 42 are provided at both ends in the left-right direction on the back surface of the mounting portion 41 (the surface opposite to the surface on which the light guide member 3 is mounted). It has been. As shown in FIGS. 4 and 5, a wedge-shaped notch 412 that is gradually narrowed inward in a cross-sectional view in the front-rear direction is formed in the center part in the front-rear direction of the mounting portion 41. . The notch 412 is formed over the entire length of the mounting portion 41 in the left-right direction. The fixing portion 411 is provided on the rear side of the notch 412.

  As shown in FIGS. 4 and 6, in the vicinity of one end of the leg portion 42 (portion connected to the housing 22 of the image projector 2), a wedge-shaped notch 421 that gradually narrows inward. Is formed. The notch 421 is formed over the entire length of the leg portion 42 in the left-right direction.

  The notches 412 and 421 are provided as rupture portions that are broken by a force applied when the vehicle V collides, and are set so as not to be broken by vibrations or the like during normal traveling.

  Next, the state of the support member 4 when the vehicle V to which the vehicle display device 1 is attached collides and a force is applied will be described. As shown in FIG. 4, when the vehicle V collides, a force in the direction of arrow X is applied. At this time, since the notches 412 and 421 are formed in the mounting portion 41 and the leg portion 42 of the support member 4, stress is easily concentrated on the notches 412 and 421, and Fracture occurs from the tip to the surface opposite to the surface on which the notches 412 and 421 are provided. When the support member 4 is broken before the light guide member 3, the light guide member 3 placed on the placement portion 41 falls as it is.

  According to the present embodiment, the support member 4 is provided so as to protrude forward from the image projector 2 so as to support the light guide member 3 from below, and the support member 4 is subjected to a force applied when the vehicle V collides. For example, when a collision object such as a pedestrian's head hits the light guide member 3 when the vehicle V collides, since a break portion is provided so that the light guide member 3 is dropped. Before the light guide member 3 is broken, the support member 4 is broken to absorb the impact. For this reason, the impact on the collision object can be reduced.

  Moreover, since the light guide member 3 is mounted on the mounting portion 41 of the support member 4, the light guide member 3 can be easily dropped when the support member 4 is broken.

  Moreover, since the notch 412 is formed along the left-right direction in the center part in the front-back direction of the vehicle V in the mounting part 41, the light guide member 3 is dropped when the notch 412 is broken. The notch 412 is provided at an easy position, and when the vehicle V collides, the mounting portion 41 can break and absorb the impact before the light guide member 3 is broken, Impact on objects can be reduced.

  In addition, since the notch 421 is formed in the leg part 42 in the vicinity of the position where the leg part 42 is connected to the housing 22 of the image projector 2, the notch 421 is broken so that the light guide member 3 is removed. A notch 421 is provided at a position where it is easy to drop, and when the vehicle V collides, the leg portion 42 can be broken before the light guide member 3 is broken to absorb the impact, The impact on the collision object can be reduced.

  Further, since the notches 412 and 421 are formed in a wedge shape, it becomes easier to break when a force is applied at the time of collision, and the support member 4 can be broken more reliably at the notches 412 and 421.

  In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.

  For example, in the above-described embodiment, the notches 412 and 421 are provided as portions (rupture portions) that are broken by the force applied when the vehicle V collides, but the light guide member 3 falls due to the force applied when the vehicle V collides. For example, a portion where the fracture portion is formed in a shape where stress other than the notch is likely to concentrate or a portion for fixing the mounting portion 41 and the leg portion 42 is fixed. In this case, it may be formed using a material that breaks first.

In the above embodiment, the support member 4 is provided with the notches 412, 421. However, the support member 4 may be configured to be broken by the force applied when the vehicle V collides. , 421 may be provided. Further, the position where the notch is provided is not limited to the central portion of the mounting portion 41 in the front-rear direction of the vehicle V or the vicinity of the position where the leg portion 42 is connected to the housing 22 of the image projector 2. A notch may be provided in the vicinity of the other end (in the vicinity of the position where the leg portion 42 is connected to the mounting portion 41).
In the embodiment, the notch 412 is provided in the placing part 41 in the vicinity of the position where the placing part 41 and the leg part 42 are continuous, but the leg part 42 may be provided with a notch. .

  In the above embodiment, the leg portion 42 of the support member 4 is provided integrally with the image projector 2, but may be provided so as to protrude forward from the image projector 2. The formed leg portion 42 may be fixed to the image projector 2.

  Moreover, in this embodiment, although the inclined surface part and opening were formed in the opposing wall A with the windshield of the instrument panel I, the separate surface which has an inclined surface part and opening in the hole provided in the opposing wall A You may provide an inclined surface part and opening by fitting a member.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.

  Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1 Vehicle display apparatus 2 Image projector 3 Light guide member 4 Support member 41 Mounting part 42 Leg part 412, 421 Notch V Vehicle F Front glass I Instrument panel A Opposite wall W Falling wall part H Opening

Claims (5)

A light-transmitting descending wall portion gradually moving downward as it goes from the front to the rear of the vehicle and an opening adjacent to the lower end of the descending wall portion are arranged in the instrument panel provided on the wall facing the windshield. A vehicle display device,
An image projector disposed below the opening and projecting an image onto the windshield through the opening;
A light guide member that is disposed inside the descending wall portion and guides light toward the descending wall portion;
A support member provided to project forward from the image projector so as to support the light guide member from below,
The vehicle display device, wherein the support member is provided with a breaking portion that is broken so that the light guide member falls due to a force applied at the time of a collision of the vehicle. The said support member has the mounting part in which the said light guide member is mounted, and the leg part which connects this mounting part and the said image projector. The Claim 1 characterized by the above-mentioned. The vehicle display device described. The vehicular display device according to claim 2, wherein the breaking portion is formed along the left-right direction of the vehicle at the center in the front-rear direction of the vehicle. The said break part is formed in the said leg part in the vicinity of the position connected with the said image projector in the said leg part, or the position connected with the said mounting part in the said leg part. 4. The vehicle display device according to 3. The vehicle display device according to claim 3 or 4, wherein the fracture portion is a wedge-shaped notch that gradually narrows from the surface toward the inside.

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