JP4394312B2 - In-vehicle display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an on-vehicle display device, and more particularly to an on-vehicle display device having a function of absorbing an impact from the front side.
[0002]
[Prior art]
Conventionally, a display device in which a liquid crystal display element or the like is arranged on the front side of the device body has been adopted for various in-vehicle electronic devices. Usually, the display unit is positioned so as to be easily visible to the passenger. It is used in a state where it is embedded in a ment panel or the like and covered with a window plate made of a relatively hard transparent resin such as an acrylic resin.
[0003]
In this type of in-vehicle display device, it is necessary to maintain a stable mounting state against vibration and impact of the vehicle.
[0004]
For this reason, whether or not the mounting structure of the display unit is necessary, that is, whether or not a reinforcing structure is required, is determined by performing a vibration / impact test in a state where the in-vehicle display device is mounted on the vehicle.
[0005]
[Problems to be solved by the invention]
In the above-mentioned conventional in-vehicle display device, since the transparent window plate is arranged at a height that is easy for the driver and passengers of the vehicle to see, the vehicle occupant may collide at the time of sudden braking or collision. However, it is necessary to prevent the window plate from being easily cracked or from damaging the occupant due to scattering of broken pieces having sharp edges.
[0006]
However, it is necessary to evaluate this point by an impact test in a state where the in-vehicle display device is mounted on a vehicle, and it takes time and cost to evaluate the measure, countermeasures for defects, change to improved specifications, etc. There was a problem.
[0007]
Therefore, the present invention devise the display mounting structure to make it crushable, excellent shock absorption performance, and can suppress the necessity of an impact test or the like performed in a state where the in-vehicle display device is mounted on the vehicle, It is an object of the present invention to provide an in-vehicle display device that does not require time and cost for examination and improvement of mounting structure.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, the in-vehicle display device of the present invention is a front display side of the device main body so as to support the peripheral portion of the display unit in the in-vehicle display device in which a display unit is arranged on the front side of the device main body. A first support member disposed on the first support member, one end connected to the first support member, the other end separated from the rear of the first support member, and an attachment that is recessed obliquely rearward at the other end And a plurality of buckling members extending obliquely rearward from the first support member, and spaced apart rearward from the first support member to support the other end of the buckling member. A second support member, wherein the first support member is formed in a case shape, and the buckling member is made of a metal plate connected to a side surface of the first support member. end is attached to the second support member by screws, the display When an external force exceeding a predetermined value is applied from the front side, the buckling member is buckled, and when a force corresponding to the buckling load of the buckling member is applied to the other end, the other end of the buckling member The part slides within a predetermined range with respect to the second support member.
[0009]
In this in-vehicle display device, when a large impact force is applied from the front side of the display unit, the buckling member buckles, so that the impact energy is absorbed and the display unit is pushed backward in the device body. . Therefore, even if the vehicle occupant hits the front of the device, the display unit is not easily broken or damaged by the sharp edge. There therefore slide within a predetermined range with respect to the second support member, more effectively the impact energy can be absorbed Rutotomoni first support member and a plurality of buckling member allows the semi-finished product assembly, manufacturing and installation of the buckling member It is facilitated a Rukoto.
[0012]
Moreover, the vehicle-mounted display device of the present invention includes a window portion adjacent to the peripheral edge portion of the display portion, and another portion that supports the window portion and covers the front side of the first support member and the second support member. When the external force exceeding a predetermined value is applied from the front side of the display unit, the window part and the other part are both parts so that the window part and the other part are separated from each other. It is connected by a lower strength connecting portion. In this configuration, when an external force exceeding a predetermined value is applied from the front side, the connection portion between the window frame portion and the other portion of the cover member is cut off, so that the shock absorbing capability is further increased. In addition, the cover member also easily crashes into the apparatus main body, and a structure that makes it difficult for the occupant to be damaged can be achieved.
[0013]
In the vehicle-mounted display device of the present invention, the cover member is formed of a plastic cover formed by a mold, and the connecting portion has a recess or a hole along the peripheral edge of the display portion. With this configuration, the low-strength connecting portion can be easily formed on the cover member with a simple structure.
[0014]
In the in-vehicle display device of the present invention, the second support member is made of a metal plate having a predetermined plate thickness and has an opening having a diameter larger than that of the display unit. With this configuration, it is possible to secure a wide movement range of the display unit into the apparatus main body, and to improve the impact energy absorption performance.
[0015]
In the vehicle-mounted display device of the present invention, the window portion of the cover member has a window plate made of a transparent resin. With this configuration, it is possible to avoid problems such as breakage of not only the display unit but also the window plate and scattering of fragments.
[0016]
In the in-vehicle display device of the present invention, the display unit includes a liquid crystal display element. With this configuration, it becomes possible to dispose the backlight separately using a space for absorbing shock behind the liquid crystal display element, and a preferable display is possible.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
(Embodiment 1)
1 to 4 are diagrams showing an embodiment of an in-vehicle display device according to the present invention.
[0019]
The in-vehicle display device of the present embodiment constitutes a part of the in-vehicle audio deck, and as shown in FIGS. 1 to 3, a display unit 12 is arranged on the front surface 11 side of the device body 10. As shown in FIG. 4, it is embedded in the instrument panel 1 of the vehicle. The display unit 12 includes a metal case 21 as a first support member, a liquid crystal display element 22 accommodated in the case 21, and the like. The front side of the display unit 12 is covered with a plastic escutcheon cover 24 having a window plate 23, and the escutcheon cover 24 forms the front surface 11 of the apparatus main body 10. The window plate 23 is made of a transparent resin such as an acrylic resin.
[0020]
The escutcheon cover 24 is formed to have a predetermined thickness by, for example, injection molding, and includes a window frame portion 24a adjacent to the peripheral edge portion 23a of the window plate 23, and a cover portion 24b (others) that supports the window frame portion 24a. Part). Further, the escutcheon cover 24 has a structure in which the window frame portion 24a and the cover portion 24b are connected by a connecting portion 24c having lower strength than both portions, and an external force exceeding a predetermined value is applied to the display unit 12 from the front side. And the window part which consists of the window plate 23 and the window frame part 24a, and the cover part 24b are cut away. Here, the connecting portion 24 c of the escutcheon cover 24 has a plurality of, for example, slit-shaped holes 24 d (which may be thin concave portions) along the peripheral edge 23 a of the window plate 23.
[0021]
In addition, a metal frame 21 and a front end portion 13a (one end portion) of the holding fitting 13 are arranged close to each other in the window frame portion 24a of the escutcheon cover 24 that supports the window plate 23. The front end portion 13 a is integrally connected to the metal case 21. That is, the plurality of holding fittings 13 and the metal case 21 are formed by pressing the same metal plate.
[0022]
The rear end portion 13b (the other end portion) of the holding metal fitting 13 is separated from each other behind the escutcheon cover 24, and the holding metal fitting 13 as a whole has a different oblique rearward outside so as to be separated toward the rear side of the escutcheon cover 24. It extends towards. The rear end portions 13b of the holding metal fittings 13 are respectively supported by the chassis 15. The chassis 15 is a second support member that is spaced rearward from the metal case 21 and supports the other end portion 13b of the holding metal fitting 13. Yes. Although not shown in detail, the escutcheon cover 24 is connected to a side plate portion or the like (outer peripheral portion) of the chassis 15 at a plurality of locations on the outer peripheral side.
[0023]
When an external force exceeding a predetermined value is applied to the display unit 12 from the front side, the plurality of holding brackets 13 are buckled by receiving a load exceeding a predetermined buckling load. Plate). The holding metal fitting 13 may be a strip-like one extending from the front end to the rear end, or one in which these are connected in parallel.
[0024]
Further, as shown in FIG. 3, the other end 13b of the holding metal fitting 13 is formed with a mounting groove 13d that is recessed toward the oblique rear side, and the mounting screw 16 inserted into the mounting groove 13d. Is attached to the chassis 15 by screwing.
[0025]
The mounting screw 16 and the mounting groove 13d of the holding metal 13 are in a positional relationship in which the mounting screw 16 is spaced a predetermined gap d from the bottom of the concave portion of the mounting groove 13d, and the force close to the buckling load on the holding metal 13 Is applied to the other end portion 13b, and the other end portion 13b of the holding metal fitting 13 is removed from the position where the screw is fastened, and the chassis until the bottom portion of the concave portion of the mounting groove 13d hits the mounting screw 16. 15 is slid within a predetermined range corresponding to the gap.
[0026]
The chassis 15 is made of a steel plate (metal plate) having a predetermined plate thickness, and has an opening 15a (see FIG. 2) having a larger diameter than each of the window plate 23 and the liquid crystal display element 22 constituting the display unit 12. A constant volume space C is secured behind the portion 12.
[0027]
In the vehicle-mounted display device of the present embodiment configured as described above, when a vehicle suddenly brakes or collides, a vehicle occupant may hit the display unit 12 from the front side.
[0028]
In such a case, in the in-vehicle display device of the present embodiment, an external force exceeding a predetermined value is applied to the window plate 23 from the front side of the escutcheon cover 24 as an impact, but is connected to the window plate 23 according to the impact energy. The connecting portion 24c between the window frame portion 24a and the cover portion 24b is cut off, and further, the holding metal fitting 13 is buckled. Therefore, the impact energy is absorbed by the breakage of the escutcheon cover 24 inward of the apparatus and the buckling of the holding metal 13, and the liquid crystal display element 22 and the window plate 23 of the display unit 12 are pushed backward in the apparatus main body 10. It is. As a result, even if a vehicle occupant hits the window plate 23, the window plate 23 is not easily cracked or jumped forward, and problems such as breakage of the window plate 23 and scattering of fragments are avoided. It is possible to prevent the occupant from being damaged by a broken piece or the like having a sharp edge.
[0029]
Further, since the escutcheon cover 24 itself is easily crashed into the apparatus main body 10, it is possible to make the occupant more difficult to be damaged. Further, since the connecting portion 24c of the escutcheon cover 24 has a recess or hole 24d along the peripheral edge portion 23a of the window plate 23, the low-strength connecting portion 24c can be easily formed in the escutcheon cover 24 with a simple structure. it can.
[0030]
In addition, since the holding metal fitting 13 is made of a metal plate and the other end 13b of the holding metal fitting 13 is attached to the chassis 15 by the attachment screw 16, the production and attachment of the holding metal fitting 13 are facilitated. become. In addition, when the holding bracket 13 is buckled, energy is also consumed when the other end portion 13b slides while being pressed against the chassis 15 within a predetermined range, so that without adding extra parts, The impact energy can be absorbed more effectively.
[0031]
Further, since the chassis 15 is made of a metal plate having a predetermined thickness and has an opening 15a having a diameter larger than that of the display unit 12, the above-described shock absorbing space accompanying movement and destruction of each part into the apparatus main body 10 is secured widely, Energy absorption performance can be enhanced. In addition, it is possible to dispose a so-called backlight (not shown) rearward using the space C, which is a shock absorbing space behind the liquid crystal display element 22, so that the liquid crystal display performance can be improved. It can also be improved.
[0032]
(Embodiment 2)
FIG. 5 is a diagram showing another embodiment of the in-vehicle display device according to the present invention.
[0033]
The in-vehicle display device of the present embodiment has a configuration that is substantially the same as that of the above-described embodiment. Therefore, the same or equivalent components as those of the above-described embodiment are denoted by the same reference numerals, and the above-described embodiment. The differences will be described in detail.
[0034]
As shown in FIG. 5, the in-vehicle display device of the present embodiment has a display unit 32 disposed on the front surface 11 side of the device body 10, and the display unit 32 includes a metal case 41 as a first support member. The liquid crystal display element 22 is held in a case 41 while being held in a plastic holder (not shown).
[0035]
The front side of the display unit 32 is covered with a plastic escutcheon cover 44 having no window plate, and the escutcheon cover 44 forms the front surface 11 of the apparatus main body 10.
[0036]
Here, the escutcheon cover 44 is formed to have a predetermined thickness by, for example, injection molding, and supports a window frame portion 44a that forms an opening-shaped window in front of the display portion 32 and the window frame portion 44a. And a cover portion 44b (another portion). Further, the escutcheon cover 44 has a configuration in which the window frame portion 44a and the cover portion 44b are connected by a connecting portion 44c having lower strength than both portions, and an external force exceeding a predetermined value is applied from the front side of the display unit 32. The window frame portion 44a (window portion) and the cover portion 44b are separated from each other. Here, the connection portion 44 c of the escutcheon cover 44 is a thin portion (concave portion) cut out in, for example, a V-groove shape along the peripheral edge portion 32 a of the display portion 32.
[0037]
The metal case 41 is a press-worked part obtained by punching a plurality of holding metal fittings 43 into a strip shape and bending them in a predetermined direction. The front end portion 43a (one end portion) of the holding metal fitting 43 is formed on both left and right side surfaces of the metal case 41. They are connected together. As in the case of the above-described embodiment, the rear end portion 43b (the other end portion) of the holding metal fitting 43 is separated from each other behind the escutcheon cover 44. It extends toward the outer side of different oblique rear so as to be separated toward the rear side. The rear end portions 13b of the holding metal fittings 13 are supported by the chassis 15 respectively.
[0038]
Other configurations are the same as in the above-described embodiment, and also in the in-vehicle display device of the present embodiment, when an external force exceeding a predetermined value is applied as an impact from the front side of the escutcheon cover 44, according to the impact energy, The connecting portion 44c between the window frame portion 44a and the cover portion 44b is easily cut off, and the holding metal fitting 43 is buckled. Accordingly, the impact energy is absorbed by the destruction of the escutcheon cover 44 inward of the apparatus and the buckling of the holding metal 43, and the liquid crystal display element 22 of the display unit 32 is pushed backward in the apparatus main body 10. As a result, even if an occupant of the vehicle hits the display unit 32, the display unit 32 is not easily cracked or jumped forward, and problems such as breakage of the display unit 32 and scattering of fragments are avoided. And the same effects as those of the above-described embodiment can be obtained.
[0039]
The in-vehicle display device of the present invention is not limited to the in-vehicle audio deck, but can be applied to various in-vehicle devices having a display unit that is used by being embedded in an instrument panel.
[0040]
【The invention's effect】
According to the present invention, when a large impact force is applied to the display unit from the front side, the buckling member buckles, absorbs the impact energy, and pushes the display unit backward in the apparatus main body. Therefore, even if a vehicle occupant collides with the front of the device, the window plate does not break easily and the occupant is not damaged by sharp edges. upon bending, since the other end slides within a predetermined range relative to the second support member, the first support member and a plurality of buckling member allows the semi-finished product assembled with kills more effectively absorb the impact energy, the seat It is possible to provide an in-vehicle display device in which the bending member can be easily manufactured and attached .
[Brief description of the drawings]
1A is a schematic front view of an essential part of an in-vehicle display device according to an embodiment of the present invention, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. FIG. 3 is a perspective view showing a schematic configuration of a display unit case and a buckling member in an embodiment of an on-vehicle display device according to the present invention. The perspective view which shows a part of instrument panel of the vehicle which mounted one Embodiment of the vehicle-mounted display apparatus. FIG. 5: The principal part schematic plan sectional drawing which shows other embodiment of the vehicle-mounted display apparatus which concerns on this invention. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Apparatus main body 11 Front surface 12 Display part 13, 43 Holding metal fitting (buckling member)
13a, 43a Front end (one end)
13b, 43b Rear end (other end)
13d Mounting groove 15 Chassis (second support member)
15a Openings 21 and 41 Metal case (first support member)
22 Liquid crystal display element 23 Window plate 23a, 32a Peripheral part 24, 44 Escussion cover 24a, 44a Window frame part 24b, 44b Cover part 24c, 44c Connection part 24d Hole part

Claims (6)

In an in-vehicle display device with a display unit on the front side of the device body,
A first support member disposed on the front side of the apparatus main body so as to support a peripheral portion of the display unit;
One end connected to the first support member, the other end spaced apart from the rear of the first support member, and a mounting groove recessed in the oblique rear side at the other end, the first support A plurality of buckling members extending obliquely rearward from the member;
A second support member spaced rearward from the first support member and supporting the other end of the buckling member;
The first support member is formed in a case shape, and the buckling member is made of a metal plate connected to a side surface of the first support member, and the other end of the buckling member is screwed to the second When an external force exceeding a predetermined value is applied from the front side of the display unit attached to the support member, the buckling member is buckled, and a force corresponding to the buckling load of the buckling member is applied to the other end portion. And the other end of the buckling member slides within a predetermined range with respect to the second support member. A cover member having a window portion adjacent to the peripheral portion of the display portion, and another portion that supports the window portion and covers the front side of the first support member and the second support member;
When an external force exceeding a predetermined value is applied from the front side of the display unit, the window part and the other part are connected by a connection part having lower strength than both parts so that the window part and the other part are separated. The in- vehicle display device according to claim 1, wherein The in-vehicle display device according to claim 2 , wherein the cover member is made of a plastic cover formed by a mold, and the connecting portion has a concave portion or a hole portion along the peripheral edge portion of the display portion . The in-vehicle display device according to any one of claims 1 to 3, wherein the second support member is made of a metal plate having a predetermined plate thickness and has an opening larger in diameter than the display portion . Vehicle display device according to any one of claims 1 to 4, characterized in that it has a window plate window portion of the cover member is made of a transparent resin. The display unit, vehicle display device according to any one of claims 1 to 5, characterized in that it has a liquid crystal display device.

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