JP2016165930A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such a failure in which fragments, having a torn surface of an acute angle, scatter at random by making a base part of a combiner broken at a fragile part as intended when an excessive external force acts on the combiner.SOLUTION: This invention relates to a display device for vehicle which includes a combiner 8 that displays an image projected by a display 5, and a combiner holding part 39 which holds a base part of the combiner 8 for free rotation. The base part of the combiner 8 is provided with a fragile part 61.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a vehicle display device.

  A vehicle such as an automobile is provided with an instrument panel in the front part of the vehicle interior. A display device (vehicle display device) such as an instrument device (meter) for displaying information necessary for driving is provided in front of the driver's seat in the instrument panel or in the center in the vehicle width direction. . Further, a display device (vehicle display device) such as a head-up display device (HUD) that displays information at a position higher than the instrument device is also provided.

  Some of such head-up display devices have a combiner that displays an image projected by a display device provided therein, and a holding unit that holds the base of the combiner and rotates the combiner. (For example, refer to Patent Document 1).

JP-A-9-101478

However, the vehicle display device described in Patent Document 1 has the following problems.
That is, when an excessive external force is applied to the combiner while the combiner is set up to use the vehicle display device, the combiner may be damaged by the external force. The combiner is often formed of, for example, a hard resin such as polycarbonate. Therefore, when the combiner is broken, there is a possibility that fragments having an acute-angled fracture surface are scattered.

  Accordingly, the main object of the present invention is to solve the above-described problems.

In order to solve the above problems, the present invention provides:
A combiner for displaying an image projected by a display;
In a vehicle display device having a combiner holding portion that rotatably holds a base portion of the combiner,
A weak portion is provided at the base of the combiner.

  According to the present invention, when an excessive external force is applied to the combiner according to the above configuration, the fragments having the acute-angle fracture surface are randomly scattered by breaking the base portion of the combiner as intended by the fragile portion. Can be prevented.

It is the figure which looked at the compartment front part provided with the display apparatus for vehicles concerning an example from the vehicles back side. It is a longitudinal cross-sectional view of the vehicle compartment front part of FIG. It is an enlarged view 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 longitudinal cross-sectional view of the display apparatus for vehicles of FIG. It is a front view of the combiner which shows the display of the display apparatus for vehicles of FIG. It is a perspective view which shows a driving force transmission mechanism. It is a perspective view of a combiner holding part. It is a disassembled perspective view of the combiner holding | maintenance part of FIG. It is the perspective view which looked at the upper cover which accommodated the rotation center axis | shaft from the bottom face side. It is a side view of a combiner holding part. It is a top view of the partial contact part made into linear form. It is a top view of the partial contact part made into the broken line shape. It is a top view of the partial contact part made into the point sequence form. It is another side view of a combiner holding part.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 15 are for explaining this embodiment.

<Configuration> The configuration of this embodiment will be described below.
As shown in the external view seen from the rear of FIG. 1 or the longitudinal sectional view of FIG. 2, a vehicle such as an automobile is provided with a front window glass 2 at the front portion of the passenger compartment 1. An instrument panel 3 is provided below the front window glass 2.

  A display device (vehicle display device) such as an instrument device (meter unit 9), a steering wheel (handle), and the like are installed on the driver's seat side of the instrument panel 3 or in the center in the vehicle width direction. Yes. In this case, the vehicle is a right-hand drive vehicle, but may be a left-hand drive vehicle.

  Then, a display device (vehicle display device) such as the head-up display device 4 is attached to the vehicle. The head-up display device 4 displays an image 6 projected by a display 5 (see FIG. 2) provided therein. In this case, the head-up display device 4 is displayed at a position higher than the instrument device (meter unit 9).

  In this embodiment, the head-up display device 4 is installed inside the instrument panel 3 described above. Then, the image 6 (display information) by the display 5 provided in the head-up display device 4 is projected above the opening 7 through the opening 7 (see FIG. 2) formed in the instrument panel 3. Like that. In this embodiment, the image is projected onto a combiner 8 as will be described later.

  As described above, the head-up display device 4 displays information necessary for driving in the field of view of the occupant who is driving facing the front (a position higher than the meter unit 9). . The display device 5 is a device for displaying information. The opening 7 is formed in advance in the upper part of the installation position of the head-up display device 4 in the occupant side portion of the instrument panel 3 in order to pass the image 6 by the display 5.

  The head-up display device 4 is, for example, as shown in FIGS. 3 to 5 (refer mainly to an exploded perspective view of FIG. 4). However, the head-up display device 4 is not necessarily limited to the following. Specifically, the head-up display device 4 described above is installed in a casing 11 that accommodates the display 5, a frame-like finisher 12 that is installed in an opening on the upper end side of the casing 11, and an upper portion of the finisher 12. And a cover member 13 (bottom cover) attached to the opening on the lower end side of the casing 11.

  In this case, the indicator 5 is installed on the bottom of the casing 11 so as to face upward so that the image 6 is directly projected onto the combiner 8 by a substantially upward straight light path. Thereby, the optical path in the casing 11 can be shortened, and the casing 11 can be reduced in size and structure. The casing 11 is a hollow cylinder having a substantially horizontally long rectangular shape in plan view and the like having front and rear, left and right side wall portions (that is, a front wall portion 11a, a rear wall portion, a left wall portion, and a right wall portion).

  The combiner 8 is a reflecting plate for projecting the image 6 of the display 5. The combiner 8 reflects the projected image 6 of the display 5 to form a virtual image at a position (back) on the front side of the combiner 8 by the distance between the combiner 8 and the display 5. It is to be visually recognized (see FIG. 2). Note that the angle of the combiner 8 is set or adjusted to an intermediate angle between a display surface installed substantially upward of the display 5 and a substantially vertical image 6 imaged forward. Further, the image 6 of the display 5 is projected on the combiner 8 while being reversed in the front-rear direction.

  The combiner 8 is a flat plate made of heat-resistant resin such as polycarbonate or glass, and is provided separately from the front window glass 2. In general, the combiner 8 is provided with an increased reflection film such as an expensive half mirror or a multilayer dielectric on its reflection surface to increase the surface reflectance to about 30% to 60%. On the other hand, in this case, the surface reflectivity is kept low (for example, about 7%) by not providing an increased reflection film or the like.

  In this case, as shown in FIG. 6, the combiner 8 is preferably a black plate or a black smoke plate. This black plate has a light transmittance of 0% or close thereto. The black smoke plate is not colorless and transparent. The combiner 8 may be a colorless and transparent one. As described above, when the combiner 8 is colorless and transparent, it is preferable to apply the above-described reflective reflection film.

  The finisher 12 is installed so as to cover the edge of the opening 7 by inserting the head-up display device 4 into the opening 7 of the instrument panel 3 from above. For this purpose, the finisher 12 is one size larger than the opening 7 and has a three-dimensional shape matching portion (lower edge) matched to the curved shape of the instrument panel 3 on the lower surface side thereof. It is said.

  The lower end side cover member 13 is provided separately from the casing 11 and is installed so as to constitute the bottom wall portion of the casing 11. In this case, the cover member 13 is attached to the casing 11 at a time with the dial plate 23, the circuit board 24, and the lamp housing 25 constituting the display device 5 being integrally assembled (display unit). ing.

  As shown in the display example of FIG. 6, the above-described indicator 5 includes a numerical value display unit 15 that can display a vehicle speed, an engine speed, and the like by numerical values, a fuel remaining amount and a distance to a target by a plurality of scales. The scale display unit 16 capable of displaying the travel route, the route display unit 17 capable of displaying the travel route using arrows, and the like. A display panel capable of displaying an image can be used as the display 5. In this case, the segment type display unit 18 (see FIGS. 4 and 5) is used.

  As shown in FIGS. 4 and 5, the segment type display unit 18 is configured to create a plurality of types of images 6 by combining a plurality of display forming units 21 (so-called segments). The segment type display unit 18 or the display device 5 equivalent thereto includes a fluorescent tube type, a segment type liquid crystal panel, a passive matrix type liquid crystal panel, and the like. In this case, the segment type display unit 18 includes a plurality of light sources 22 (see FIG. 4) and a plurality of light sources 22 so that the luminance can be increased without increasing the cost. A dial plate 23 having a plurality of display forming portions 21 that transmit light from is used. The light source 22 is configured to individually display the plurality of display forming units 21 by lighting (individual light source).

  For example, in the case of the numerical display unit 15, the display forming unit 21 can be configured by seven segments arranged in a numeric “8” shape (7-segment display). In the case of the scale display part 16, the display formation part 21 can be comprised by arranging a several segment continuously in a bar-graph form. For example, in the display example of FIG. 6, a plurality of segments are arranged to indicate the energy saving operation status. On the upper side of the scale display unit 16, a warning display unit 33 is provided. In the case of the route display unit 17, various travel routes can be displayed by appropriately arranging points, lines, or arrow-shaped segments. The display formation part 21 can also contain things other than the above (for example, the description (for example, km / h) by a Chinese character or an alphabet).

  As the light source 22, an LED (light emitting diode) is used. The LED is installed so as to be attached to the circuit board 24. A high luminance light source 22a or the like may be partially attached to the circuit board 24 for luminance adjustment. A lamp housing 25 is installed between the circuit board 24 and the dial 23 so as to be in close contact with the upper surface of the circuit board 24 and the lower surface of the dial 23. The lamp housing 25 is formed with a plurality of independent light guide holes 25 a for each light source 22, a contact surface 28 with respect to the dial plate 23, and the like. The lamp housing 25 is made of, for example, a white resin having a smooth surface with high reflectivity.

  The display forming portion 21 is a light transmitting portion provided in plural on the dial 23 so that the various images 6 described above can be formed. The display forming part 21 can be made colorless and transparent or colored and transparent (individually or entirely) according to the display purpose and display contents. The display forming unit 21 is formed at a position that matches each light guide hole 25a. For example, the dial plate 23 is formed by forming an opaque printing layer on a transparent resin plate, leaving the display forming portion 21. Instead of providing the display forming portion 21 partially on the dial plate 23 made entirely opaque and forming the image 6, the dial plate 23 and the lamp housing 25 made entirely transparent. The image 6 may be configured according to the shape of the light guide hole 25a.

  Further, the combiner 8 configured to project the image 6 of the display 5 to the opening 7 is provided to be openable and closable.

  Here, the combiner 8 can be a fixed type. In this case, the combiner 8 opens the opening 7 when the head-up display device 4 is used, and when the head-up display device 4 is not used. The opening 7 can be closed. In this case, the opening 7 is an opening of a frame-shaped finisher 12 attached to the opening 7. The combiner 8 is attached so as to open / close the opening of the finisher 12 (open upward) with its front edge or its periphery as the opening / closing center. The combiner 8 is driven to open and close by an opening / closing drive device 37 installed inside the casing 11. A stepping motor or the like can be used for the opening / closing drive device 37.

  More specifically, as shown in FIG. 7, between the opening / closing drive device 37 and the combiner 8, a driving force transmission mechanism 38 that transmits the drive force of the opening / closing drive device 37 and the base (front edge) of the combiner 8. A combiner holding portion 39 (combiner holding member) that rotates the combiner 8 by the driving force transmitted from the driving force transmission mechanism 38 is provided.

  The driving force transmission mechanism 38 includes, for example, an output gear 41 attached to the output shaft of the opening / closing drive device 37, a reduction gear 42 meshing with the output gear 41, and both ends of the synchronous shaft 43 to which the reduction gear 42 is attached. And a pair of sector gears 46 that are attached to both ends of the rotation center shaft 45 (see FIG. 9) and mesh with the pair of small diameter gears 44. The The synchronization shaft 43 and the rotation center shaft 45 described above extend in the width direction of the combiner 8. Then, the base portion of the combiner 8 is attached to the rotation center shaft 45 via the combiner holding portion 39.

  As shown in FIGS. 8 and 9, the combiner holding portion 39 includes a lower cover 51 disposed in contact with the lower surface side of the base portion of the combiner 8, and a rotation center shaft on the upper surface side of the base portion of the combiner 8. Fastening member 53 (see FIG. 7) that passes through upper cover 52 that is disposed in contact with each other through 45, and lower cover 51, combiner 8, turning center shaft 45, and upper cover 52 are fastened together. And have. Between these members, in order to attach the fastening member 53, a large number of through holes 54 are formed with a predetermined interval in the width direction of the combiner 8. At this time, in order to efficiently transmit the rotational force to the combiner 8, the intermediate portion of the rotation center shaft 45 is a flat surface 45a. Furthermore, as shown in FIG. 10, a shaft receiving recess 55 is formed on the lower surface side of the upper cover 52 (or the upper surface side of the lower cover 51) so as to receive the rotation center shaft 45. Further, on the upper surface side of the upper cover 52, a blindfold housing recess 57 is formed so as to accommodate the blindfold 56.

  However, the combiner holding portion 39 is not limited to the above-described structure, and for example, the rotation center shaft 45 can be installed on the lower surface side of the base portion of the combiner 8. In this case, the shaft receiving recess 55 can be provided in the lower cover 51. Further, the rotation center shaft 45 is not limited to be housed in the shaft housing recess 55 but may be directly attached to either the lower cover 51 or the upper cover 52 without providing the shaft housing recess 55. it can. Alternatively, the lower cover 51 and the upper cover 52 can be integrated.

  In contrast to the basic configuration as described above, this embodiment has the following configuration.

  (1) A head-up display device having a combiner 8 that displays a virtual image of the image 6 projected by the display 5 forward, and a combiner holding unit 39 that rotatably holds the base of the combiner 8. 4 (vehicle display device), a weakened portion 61 is provided at the base of the combiner 8 as shown in FIG.

  Here, the base part of the combiner 8 is a peripheral part other than the main part on which the display of the combiner 8 is projected, and in this case, the front edge part or the periphery thereof that is the center of support and rotation. is there. The fragile portion 61 is intended to cause the combiner 8 to break as intended when an excessive external force is applied to the combiner 8. The fragile portion 61 may be anything as long as it can control how the combiner 8 is damaged.

  (2) Between the combiner holding portion 39 and the position closer to the base side than the weakened portion 61 of the combiner 8, having a partial contact portion 65 for holding the combiner 8 in a line contact state or a point contact state Is done.

  Here, the partial contact portion 65 may be provided in any manner as long as it is provided between the combiner holding portion 39 and the base portion of the combiner 8. For example, the partial contact part 65 may be provided on the side of the combiner holding part 39, may be provided on the side of the combiner 8, or may be provided as independent from the combiner holding part 39 and the combiner 8. Or a combination of these. The partial contact portion 65 may be anything as long as the combiner 8 can be partially held in a line contact state or a point contact state. For example, the partial contact portion 65 may be a rib, a ridge, a protrusion, or the like.

(3) More specifically, the fragile portion 61 is a fragile line 71 extending in the width direction of the combiner 8.
The partial contact portion 65 is extended along the weak line 71.
Further, the fragile line 71 and the partial contact portion 65 are provided at a position inside the combiner holding portion 39.

  Here, the weak line 71 is a cut portion extending in the width direction of the combiner 8. The fragile line 71 is preferably a straight line that reaches both ends of the combiner 8 in the width direction. The depth of the line of weakness 71 is appropriately set depending on the magnitude of the load that should damage the combiner 8. The weak line 71 can be provided only on one side of the combiner 8 or on both sides. When providing the weak line 71 on both surfaces of the combiner 8, it can provide in the same position of both surfaces, and can provide in a different position. In this case, they are provided at the same position.

  Moreover, the partial contact part 65 may be anything as long as it extends in the width direction of the combiner 8 along the line of weakness 71. For example, the partial contact portion 65 may be a continuous linear shape (linear contact portion) as shown in FIG. 12, or a discontinuous broken line shape (dashed contact) as shown in FIG. Part). Or as shown in FIG. 14, the partial contact part 65 is good also as a multi-point (or point-string-like) thing (point contact part) scattered in the width direction of the combiner 8. FIG. Further, these may be provided in combination.

  And the partial contact part 65 can be provided only on the single side | surface of the combiner 8, or can be provided with respect to both surfaces. When providing the partial contact part 65 in the both surfaces side of the combiner 8, it can provide in the same position of both surfaces, and can provide in a different position. In this case, they are provided at the same position.

  Furthermore, the partial contact portion 65 can be provided at one position on one side of the combiner 8 as viewed from the side, or at two or more positions. In this case, two locations are provided on one side, for a total of four locations. At this time, the two partial contact portions 65 are provided on both sides of the position of the fastening member 53. When two partial contact portions 65 are provided on one side of the combiner 8, the two partial contact portions 65 may have the same height so as to generate an equal holding force, or may have different heights. The holding force may be uneven and the holding force may be partially increased.

  In addition, the partial contact portion 65 may be provided integrally with the combiner holding portion 39 as shown in FIG. 11, or the shaft accommodating recess 55 of the upper cover 52 as shown in FIG. 15. You may make it provide with respect to the rotation center axis | shaft 45 accommodated in this. In this case, the partial contact portion 65 is formed integrally with the flat surface 45 a of the rotation center shaft 45.

  The inside of the combiner holding part 39 is a position that cannot be seen from the outside.

  <Effect> According to this embodiment, the following effects can be obtained.

In the head-up display device 4 of this embodiment, the image 6 of the display 5 is disposed above the opening 7 through the opening 7 formed in the instrument panel 3 (in this case, the opening of the finisher 12). The image is projected on the combiner 8 provided and a virtual image is formed in front of the combiner 8 so that the passenger can visually recognize the image 6.
In this way, by using the head-up display device 4 to display information in the field of view of the occupant who is driving, the occupant can obtain the displayed information with little gaze movement or eye focus adjustment. Can do.

  (Effect 1) And by rotating the combiner holding part 39, the combiner 8 is stood up when used, or the combiner 8 is laid down when not in use to open and close the opening 7, or the combiner 8 during use The angle can be adjusted to an angle that is easy to see.

  In addition, since the above-described opening 7 can be closed by laying the combiner 8 when not in use, it is possible to prevent foreign matters such as dust, dust, and objects from entering the inside of the opening 7.

  Here, if an excessive external force is applied to the combiner 8 while the combiner 8 is standing and the vehicle display device is used, the combiner 8 may be damaged by the external force. Since the combiner 8 is often formed of a hard resin such as polycarbonate, for example, if the combiner 8 is inadvertently damaged, fragments having an acute fracture surface may be scattered.

  Therefore, the weakened portion 61 is provided in advance at the base of the combiner 8. Thereby, when an excessive external force is applied to the combiner 8, the base portion of the combiner 8 can be neatly broken as set by the fragile portion 61. As a result, it is possible to eliminate the inconvenience that large and small fragments having an acute-angled fracture surface are scattered randomly.

  Moreover, since the base portion of the combiner 8 is broken by the fragile portion 61, the load acting on the combiner holding portion 39 is released by an excessive external force, so that the drive for rotating the combiner holding portion 39 and the combiner holding portion 39 is driven. The parts (opening / closing drive device 37, drive force transmission mechanism 38, etc.) can be protected from excessive external force.

  (Effect 2) The partial contact part 65 was provided in the combiner holding part 39. FIG. Thereby, since the base part of the combiner 8 is held in a line contact state or a point contact state by the partial contact part 65, when an excessive external force is applied to the combiner 8, the partial contact part 65 becomes a fulcrum, and the tip of the combiner 8. The position where the external force on the side is applied becomes the force point, and stress is concentrated on the fragile portion 61 located near the partial contact portion 65 between the fulcrum and the force point. The fragile portion 61 can be reliably broken. Thereby, it is possible to further reduce the load applied to the combiner holding unit 39 and the drive unit that rotates the combiner holding unit 39.

  (Effect 3) The weak part 61 was made into the weak line 71 extended in the width direction of the combiner 8, and the partial contact part 65 was extended along the weak line 71. FIG. Thereby, while making the weak part 61 and the partial contact part 65 into the simplest structure, the combiner 8 can be broken finely as intended along the weak line 71 when needed. In addition, the weak line 71 and the partial contact portion 65 are provided inside the combiner holding portion 39. Thereby, the weak line 71 and the partial contact part 65 can be hidden inside the combiner holding part 39 so as not to be visible from the outside. Accordingly, it is possible to prevent deterioration in appearance due to the fragile portion 61 and the partial contact portion 65.

  While the embodiments have been described in detail with reference to the drawings, the embodiments are merely illustrative. Therefore, the present invention is not limited to the configuration of the embodiment, and it is a matter of course that changes in design and the like within a range not departing from the gist are included. For example, the vehicle display device is not limited to the head-up display device 4 as long as it has the combiner 8. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modification examples are disclosed, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

4 Head-up display device (vehicle display device)
5 Display 6 Image 8 Combiner 39 Combiner holding part 61 Weak part 65 Partial contact part 71 Weak line

Claims (3)

A combiner for displaying an image projected by a display;
In a vehicle display device having a combiner holding portion that rotatably holds a base portion of the combiner,
A vehicular display device, wherein a weak portion is provided at a base portion of the combiner. The vehicle display device according to claim 1,
A vehicle display device comprising a partial contact portion that holds the combiner in a line contact state or a point contact state between the combiner holding portion and a position closer to the base side than the weak portion of the combiner. The vehicle display device according to claim 2,
The fragile portion is a fragile line extending in the width direction of the combiner,
The partial contact portion extends along the line of weakness;
The vehicle display device, wherein the weak line and the partial contact portion are provided at a position inside the combiner holding portion.