JP4237990B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device such as a vehicle instrument, and more particularly to a display device that improves appearance and improves space efficiency.
[0002]
[Prior art]
In vehicular instruments and the like, usually, a dial that covers an analog dial plate or a digital liquid crystal display device is used. This look-back has the function of improving the appearance from the viewpoint of the driver, etc., covering the areas other than the information display area of the dial plate and the liquid crystal display device, but in recent years, it has been further improved in view of high-end orientation and diversification of consumer needs. Improvement is demanded. A conventional display device and its problems will be described below with reference to FIGS.
[0003]
FIG. 4 is a view showing a state in which a conventional display device is mounted on an instrument panel. 5 and 6 are diagrams for explaining the problems of the conventional display device. As shown in FIG. 4, the display device 100 is, for example, a vehicle instrument, and is attached to a location with good visibility from the driver who operates the steering wheel S on the instrument panel I as is well known. The display device 100 includes a main body case 11, a look-back 112, a front glass 13, a dial plate 14, a pointer 17 and the like.
[0004]
Various designs corresponding to a speedometer, a tachometer, and the like are formed on the dial 14, and these designs are indicated by a pointer 17 that is rotated by a movement (not shown) disposed on the back side of the dial 14. Is done. The dial 112 covered on the front face of the dial 14 is black and has a window 112W corresponding to the design and the rotation range of the pointer 17. The look 112 also has a window corresponding to the design 14a indicating a warning, direction indication, or the like formed on the dial 14. A smoke-type surface glass 13 is covered on the front surface of the facing 112.
[0005]
As shown in the schematic cross-sectional view of FIG. 5, the display device 100 includes a display surface (vertical surface in the drawing) and a hood-shaped inner wall surface (horizontal surface in the drawing) that extends forward in the vertical direction. ). On the back surface of the turn 112, a dial plate 14 on which a design such as a speedometer is formed is disposed. Further, a movement 16 a for rotating the pointer 17 is mounted on the circuit board 15 on the back surface of the dial 14. In addition to the movement 16a, various related parts 16b to 16d such as a microcomputer, a capacitor, and a resistor are mounted on the circuit board 15. A main body case 11 that supports the circuit board 15 and accommodates the related components 16 b to 16 d constitutes the entire back side of the display device 100. Actually, a light guide plate is stacked on the back surface of the dial plate 14 and a light source for a pointer and a dial plate is also arranged, but these are omitted.
[0006]
Further, instead of the display device 100, a digital indication system display device 200 may be used as shown in the schematic sectional view of FIG. In this display device 200, a well-known VFD (fluorescent display tube) 26a is used as an information display device. Also in the case of the display device 200, a payback 222 including a display surface (vertical surface in the drawing) and a hood-like inner wall surface (horizontal surface in the drawing) extending forward in the vertical direction is provided. Have. A VFD 26a capable of digitally displaying the speed, the engine speed, and the like is mounted on the circuit board 25 and disposed on the back surface of the facing 222. In addition to the VFD 26a, various related parts 26b to 26c such as a microcomputer, a capacitor, a resistor, and a heat radiating member are mounted on the circuit board 25. A main body case 221 that supports the circuit board 25 and accommodates the related components 26 b to 26 c constitutes the entire back side of the display device 200. Reference numeral 222W denotes a window portion formed in the turning 222.
[0007]
[Problems to be solved by the invention]
However, in the conventional display device 100, as shown in FIG. 5, the corner lines 112b and 112c may be seen from the viewpoint EP such as a driver. As shown in FIG. 4, the corner line 112b gives a driver a sense of incongruity and deteriorates the appearance.
[0008]
Also in the conventional display device 200, as shown in FIG. 6, the corner lines 222b and 222c may be seen from the viewpoint EP such as a driver. Further, in the case of the display device 200, since the VFD 26a is used as the information display device, a movement, a light guide plate, a light source, and the like are unnecessary, and the display device 200 is thinned. However, when there is a part thicker (or higher) than the thickness of the VFD as shown by the part 26a, if the distance between the circuit board 25 and the turn-back 222 is increased for the part 26a, the entire apparatus becomes larger. Therefore, only the component 26a may be arranged on the back surface of the substrate 25. Along with this, the main body case 221 has to protrude to the back surface in order to accommodate the component 26a, resulting in problems such as a complicated housing structure.
[0009]
Therefore, in view of the present situation described above, an object of the present invention is to provide a display device that improves appearance and enhances space efficiency and contributes to reduction in thickness and size.
[0010]
[Means for Solving the Problems]
The display device according to claim 1, which has been made to solve the above-mentioned problem, has a window portion corresponding to a predetermined display surface, and includes a turnover that is covered on the front surface of the display surface. The turn-back has inner wall surfaces 12a and 12b formed in a curved shape so as to gradually widen the opening surface from the display surface toward the viewpoint so that the corner line of the inner wall surface disappears from the viewpoint of the driver or the like. It is characterized by that.
[0011]
According to the first aspect of the present invention, since the facing has the inner wall surface formed so as to gradually widen the opening surface from the display surface toward the viewpoint, the corner line 112b of the facing inner wall surface as in the prior art is formed. Helps to disappear. In addition, since the facing inner wall surface is formed in a curved surface shape, the inner wall surface becomes smoother and the appearance can be further improved. Furthermore, since a new space can be generated on the back surface of the inner wall surface, this portion can also be used as a storage space for related parts.
[0016]
The display device according to claim 2, which has been made to solve the above-described problem, is the display device according to claim 1 , wherein an analog instruction dial 14 included in a vehicle meter is arranged on the display surface. It is characterized by that.
[0017]
According to the second aspect of the present invention, the dial for analog indication is arranged on the display surface, so that it is possible to provide an analog indicator type vehicle instrument with improved appearance.
[0018]
The display device according to claim 3, which has been made to solve the above problem, is the display device according to claim 1 or 2 , wherein the display surface includes an information display surface of a fluorescent display tube 26 a included in a vehicle instrument. Is arranged.
[0019]
According to the third aspect of the present invention, since the information display surface of the fluorescent display tube is arranged on the display surface, it is possible to provide a digital indicator system vehicle instrument with improved appearance.
[0020]
The display device according to claim 4, which has been made to solve the above problem, is the display device according to any one of claims 1 to 3 , wherein a space generated on the back surface of the inner wall surfaces 22 c and 22 d Part of the parts 26c and 26d constituting the vehicle meter is arranged.
[0021]
According to the fourth aspect of the present invention, since a part of the vehicle instrument is arranged in the space generated on the back surface of the inner wall surface, it is thinned and improved in appearance as described above. A display device that can be reduced in size can be provided. In particular, it is possible to contribute to an improvement in space efficiency for a display device of a digital indication system that has a strong tendency to be thinner.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a state in which the display device of the present invention is mounted on an instrument panel. 2A and 2B are both schematic cross-sectional views according to the first embodiment of the display device of the present invention. 2A and 2B show a cross-sectional shape at a substantially central portion of the display device 1 of FIG.
[0023]
As shown in FIG. 1, the display device 1 is, for example, a vehicle meter, and is attached to a location on the instrument panel I that is highly visible from the driver who operates the steering wheel S. The display device 1 includes a main body case 11, a look 112, a front glass 13, a dial 14, a pointer 17, and the like. In addition, as shown here, the display apparatus 1 does not necessarily need to be arrange | positioned in front of the steering wheel S, and may be a little from a passenger seat. Further, instead of the analog indicating system display device as shown here, a digital indicating system display device may be used.
[0024]
Various designs corresponding to a speedometer, a tachometer, and the like are formed on the polycarbonate dial plate 14 by hollow printing or the like, and these designs are applied to a movement (not shown) arranged on the back side of the dial plate 14. It is instructed by the moved pointer 17. The dial 112 covered on the front face of the dial 14 is made of a black resin, and has a window portion 12 </ b> W corresponding to the design and the rotation range of the pointer 17. The look 112 also has a window corresponding to the design 14a indicating a warning, direction indication, or the like formed on the dial 14. Since the facing 112 has an inner wall surface formed so as to gradually widen the opening surface from the display surface toward the viewpoint, the corner line of the inner wall of the facing 112 disappears and the appearance is improved. And, the surface glass 13 made of smoke-based resin is covered on the front surface of the facing 112.
[0025]
As shown in FIG. 2 (A), the inner wall surface 12a at the bottom of the facing 112 is formed in a curved surface shape. Although not shown, when viewed from the front, the inner wall surface 12 a is formed over the entire lower portion of the turn-back 112. A surface glass 13 is provided on the opening surface of the facing 112 so as to cover the opening surface. The facing 112 is formed with a window portion 12 </ b> W corresponding to a design such as a speedometer and a rotation range of the pointer 17.
[0026]
On the other hand, a dial plate 14 with a design such as a speedometer is disposed on the back surface of the turn 112. Further, on the back surface of the dial plate 14, a movement 16 a for rotating the pointer 17 is mounted on the circuit board 15 and disposed. The rotation shaft of the movement 16a passes through a through hole formed in the dial 14 and is inserted into the pointer. In addition to the movement 16a, various related parts 16b to 16d such as a microcomputer, a capacitor, and a resistor are mounted on the circuit board 15.
[0027]
A main body case 11 that accommodates the related components 16 b to 16 d and the like while supporting the circuit board 15 constitutes the entire back side of the display device 1. In practice, a light guide plate is stacked on the back surface of the dial plate 14 and a pointer and a light source for the dial plate are also disposed, but these are omitted.
[0028]
In such a configuration, the inner wall surface 12a is viewed as a continuous surface without a corner line from the viewpoint EP of a driver or the like. In this example, a corner line exists at the upper part of the inner wall surface of the facing 112, but this portion is not normally visually recognized from the viewpoint EP of a driver or the like due to the mounting position and mounting angle of the display device 1. That is, only the portion having a high probability of being visually recognized is used as the curved inner wall surface 12a, so that the appearance is improved only by the conventional small change of the payback.
[0029]
Depending on the mounting position and mounting angle of the display device, there is a high probability that the upper part of the inner wall surface of the facing 112 is visually recognized from the viewpoint of a driver or the like. In this case, as shown in the display device 1 ′ of FIG. 2B, a curved inner wall surface 12b similar to the inner wall surface 12a is provided on the upper portion of the inner wall surface of the facing 112 ′. Thereby, a corner line disappears from the upper part and the lower part of the inner wall surface of the turn 112 ′, and the appearance is further improved. If necessary, the curved inner wall surface may be only the upper part of the facing inner wall surface, or may be a linear inner wall surface, that is, a tapered inner wall surface, instead of the curved surface shape.
[0030]
Next, a second embodiment of the display device of the present invention will be described with reference to FIG. 3A, 3B, and 3C are all schematic cross-sectional views according to the second embodiment of the display device of the present invention. 3A, 3B, and 3C show a cross-sectional shape at a substantially central portion of the display device in accordance with FIG. In the second embodiment, a digital indicating system display device mainly composed of VFD is exemplified. The material of each constituent member in the second embodiment is the same as that of the first embodiment.
[0031]
Similarly to the display device 1 of FIG. 1, the display device of the second embodiment also has a portion that is highly visible from the driver operating the steering wheel S on the instrument panel I, for example, the front of the steering wheel S, or Slightly attached to the passenger seat.
[0032]
As shown in FIG. 3A, the upper inner wall surface 22a of the facing 22 is formed in a tapered shape. Although not shown, when viewed from the front, the inner wall surface 22 a is formed over the entire upper portion of the turn-back 22. A surface glass 23 is provided on the opening 22 of the facing 22 so as to cover the opening. In addition, a window 22W corresponding to the information display surface of the VFD 26a is formed on the turn 22. The window portion 22W has a rectangular shape, for example.
[0033]
On the other hand, a VFD 26a capable of digitally displaying the speed, the engine speed, and the like is mounted on the circuit board 25 and disposed on the back surface of the turn-back 22. In addition to the VFD 26a, various related parts 26b and 26c such as a microcomputer, a capacitor, a resistor, and a heat radiating member are mounted on the circuit board 25. A main body case 21 that supports the circuit board 25 and accommodates the related components 26 b and 26 c constitutes the entire back side of the display device 2.
[0034]
In such a configuration, from the viewpoint EP of a driver or the like, the inner wall surface 22a is visually recognized as a continuous surface having almost no corner lines. Although there is a corner line at the lower part of the inner wall surface of the turn-back 22, this portion is not usually visually recognized from the viewpoint EP of the driver or the like due to the mounting position and mounting angle of the display device 2. That is, only the portion having a high probability of being visually recognized is the tapered inner wall surface 22a, so that the appearance is improved only by the conventional small change of the payback.
[0035]
Furthermore, in the second embodiment, the effect of improving the space efficiency by the inner wall surface 22a is also great. That is, in a display device of a digital indication system such as VFD that has been widely used in recent years, a movement, a light guide plate, a light source, and the like are unnecessary, and there is a strong tendency to make it thinner. However, even in such a display device, for example, there may be a part that is thicker (or higher) than the thickness of the VFD as indicated by the part 26a. Since such a part 26a can be accommodated using a space newly generated by the inner wall surface 22a, it can greatly contribute to an improvement in space efficiency for a display device of a digital indication system such as a VFD.
[0036]
Depending on the mounting position and mounting angle of the display device, the probability that the lower part of the inner wall surface of the look-back 22 is visually recognized from the viewpoint of a driver or the like may be high. In this case, as shown in the display device 2 'in FIG. 3B, a tapered inner wall surface 22b similar to the inner wall surface 22a is provided at the lower portion of the inner wall surface of the turn 22'. Thereby, a corner line disappears from the upper part and the lower part of the inner wall surface of the turn 22 ', and the appearance is further improved. 22W 'indicates a window portion equivalent to the window portion 22W.
[0037]
Furthermore, as shown in the turning 22 ″ of the display device 2 ″ in FIG. 3C, the upper and lower portions may be curved inner wall surfaces 22c and 22d. As a result, the inner wall surface of the payback 22 ″ becomes smoother and looks better. In addition, in the payback of FIGS. 3 (B) and 3 (C), not only on the upper back of the payback but also on the lower back. Since a large space appears, this space can be used as an arrangement space for the other components 26d and the space efficiency is further improved. 22W ″ indicates a window portion equivalent to the window portion 22W.
[0038]
Note that the tapered inner wall surface and the curved inner wall surface shown in FIGS. 3B and 3C may be only the lower part of the facing inner wall surface. Further, the inner wall surface having a taper shape or a curved surface shape may be mixed in one look.
[0039]
As described above, according to the embodiment of the present invention, it is possible to provide a display device that contributes to reduction in thickness and size by improving appearance and improving space efficiency.
[0040]
Note that the present invention can be applied not only to a vehicle instrument but also to a timepiece, an electrical device, or the like as long as it is a display device having a turnaround. The present invention can be variously modified without departing from the gist thereof.
[0041]
【The invention's effect】
As described above, according to the first aspect of the present invention, the payback has the inner wall surface formed so as to gradually widen the opening surface from the display surface toward the viewpoint direction. This is useful for eliminating the corner line 112b on the wall surface. Since the facing inner wall surface is formed in a curved surface shape, the inner wall surface becomes smoother and the appearance can be further improved. Therefore, appearance can be improved. Moreover, since a new space can be generated on the back surface of the inner wall surface, this portion can also be used as a storage space for related parts.
[0044]
According to the second aspect of the present invention, the dial for analog indication is arranged on the display surface, so that it is possible to provide an analog indicator type vehicle instrument with improved appearance.
[0045]
According to the third aspect of the present invention, since the information display surface of the fluorescent display tube is arranged on the display surface, it is possible to provide a digital indicator system vehicle instrument with improved appearance.
[0046]
According to the invention described in claim 4, since a part of the components constituting the vehicle instrument is arranged in the space generated on the back surface of the inner wall surface, the appearance and the appearance can be improved as described above. A display device that can be reduced in size can be provided. In particular, it can greatly contribute to the improvement of space efficiency with respect to a display device of a digital indicating system that has a strong tendency to be thinner.
[Brief description of the drawings]
FIG. 1 is a view showing a state in which a display device of the present invention is mounted on an instrument panel.
2A and 2B are schematic cross-sectional views according to the first embodiment of the display device of the present invention.
3A, 3B, and 3C are schematic cross-sectional views according to a second embodiment of the display device of the present invention. FIG.
FIG. 4 is a diagram showing a state in which a conventional display device is mounted on an instrument panel.
FIG. 5 is a diagram for explaining problems of a conventional display device.
FIG. 6 is a diagram for explaining a problem of another conventional display device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Display apparatus 11 Main body case 12,12 ', 22,22', 22 "Mirror 12a, 12b, 22a-22d Inner wall surface 13 Surface glass 14 Dial 16a-16c, 26b-26d Parts 17 Pointer 26a VFD

Claims (4)

In a display device provided with a turnover that is provided on a front surface of the display surface with a window corresponding to a predetermined display surface,
The look-back has an inner wall surface formed in a curved shape so as to gradually widen the opening surface from the display surface toward the viewpoint direction so that the corner line of the inner wall surface disappears from the viewpoint of the driver or the like.
A display device characterized by that. The display device according to claim 1,
On the display surface, a dial plate for analog instruction included in the vehicle instrument is disposed.
A display device characterized by that. The display device according to claim 1 or 2,
On the display surface, an information display surface of a fluorescent display tube included in the vehicle instrument is disposed.
A display device characterized by that. In the display device according to any one of claims 1 to 3,
In the space generated on the back surface of the inner wall surface, some parts constituting the vehicle instrument are arranged.
A display device characterized by that.

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