JP2004205449A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle that can combine a desired display, such as arbitrary digital display, with analog display by utilizing a see-through region, and further has a low-cost configuration, where safety is improved. <P>SOLUTION: The display device comprises a flat dial 21 having an analog display region 21b, where a see-through region 21a and specific display designs 21b1, 221b2 for analog display are formed; a pointer mechanism that is arranged on the front of the dial 21 and includes a pointer 21 for indicating the display designs; a first cylindrical facing 81 arranged at the rear side of the dial 21; cover glass 83 that is mounted to one end section 81b of the first facing 81 and protects the rear side of the dial 21; and a display device 22 arranged on the inner wall of the first facing 81. The cover glass 83 has a reflection surface 22a for reflecting the display image of the display device 22 for leading to the side of an access point EP through the see-through region 21a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle for which it is possible to arbitrarily combine a desired display such as a multi-display with the use of a see-through area provided on the dial, to an analog display using an instruction of a display design on the dial by hands. The present invention relates to a display device, and more particularly to a vehicle display device having improved visibility.
[0002]
[Prior art]
As a display device for a vehicle, it is possible to arbitrarily combine a desired display such as a multi-display using an see-through area provided on the dial with an analog display using an instruction of a display design on the dial by hands. The applicant has previously proposed a compact vehicle display device which has a simple configuration, can easily cope with various variations, is excellent in design, is excellent in visibility of display contents, and is compact. (For example, refer to Japanese Patent Application No. 2002-223341.)
[0003]
FIG. 5 is a diagram illustrating a configuration example of the above-described proposed vehicle display device. In FIG. 5, the vehicle display device in which the front cover 11 and the main body case 31 are integrated is attached to a meter hood 61. The meter hood 61 has an arch shape, and is formed using a part of an instrument panel (also simply referred to as an instrument panel) 71 at a front portion. A front glass 51 made of smoked glass is attached to the front of the front cover 11.
[0004]
The display device 22 is attached to a rear part (a front side as viewed from the driver side) of a housing part 71 a provided in a part of the raised instrument panel 71. More specifically, the housing portion 71a has a tunnel shape with the innermost portion closed, and the display device 22 is attached to the innermost portion of the housing portion 71a such that the display surface faces the opening. The display device 22 is an LCD (liquid crystal display) or the like, and displays, for example, various characters and warning designs related to navigation.
[0005]
FIG. 6 is a partial sectional view of the vehicle display device of FIG. As shown in FIG. 6, a hand 16, a movement 12, a move gear 13, a relay gear 14, a hand gear 15, and the like are arranged on the front cover 11 side. The movement 12 transmits its power to the pointer 16 via the move gear 13, the relay gear 14, and the pointer gear 15. The move gear 13, the relay gear 14, and the pointer gear 15 are supported by upper and lower support plates 17, 18.
[0006]
More specifically, the move gear 13 is directly connected to a rotation shaft 13a of the movement 12 that passes through holes 17a and 18a formed in the upper and lower support plates 17 and 18. The relay gear 14 rotates with its rotating shaft 14 a passing through holes 17 b and 18 b formed in the upper and lower support plates 17 and 18, and relays the rotation of the move gear 13 to the pointer gear 15. The pointer gear 15 rotates with its rotating shaft 15 a passing through holes 17 c and 18 c formed in the upper and lower support plates 17 and 18, and transmits the rotation of the relay gear 14 to the pointer 16. The upper and lower support plates 17 and 18 are fixed to the front cover 11.
[0007]
The pointer 16 has a pointer shaft 16 b connected to a rotation shaft 15 a of the pointer gear 15. The pointer shaft 16b is integrated with a substantially cylindrical pointer cap 16a having an open lower surface. The pointer cap 16a holds the pointer balancer 16c together with the upper end of the pointer 16 at the base end. The pointer 16 is made of a tapered transparent resin having a light guiding property, and a hot stamp layer (not shown) for shining the pointer in a predetermined color is formed on the lower surface thereof. In addition, a light receiving surface for receiving light from the pointer light source 26 is formed at the base end thereof.
[0008]
The front cover 11 has a height (or thickness) W1 based on the thickness (or height) of the hands 16, the gears 13, 14, 15 and the movement 12 arranged as described above. Further, by removing the front cover 11 from the main body case 31, the movement 12, the respective gears 13, 14, 15 and the pointer 16 can also be easily removed from the main body case 31.
[0009]
On the other hand, on the main body case 31 side, a dial 21, a light guide member 23, a circuit board 24, a circuit section 25, and the like are arranged. The dial 21 has a shape in which the periphery is slightly lifted, and a light guide member 23 is disposed on the back surface of the dial 21.
[0010]
The dial 21 is made of, for example, a resin such as PC (polycarbonate) or PMMA (polymethyl methacrylate), and has a hole-shaped or transparent see-through area 21a for passing information from the rear of the device to the front of the device, and an analog display. And an analog display area 21b on which a display design for use is formed. In particular, the see-through area 21a has a substantially circular shape, and the analog display area 21b has a ring shape of a predetermined width surrounding the see-through area 21a.
[0011]
The light guide member 23 is made of a transparent resin and has substantially the same shape as the analog display area 21 b of the dial 21. The light guide member 23 guides light from the dial light sources 27 a to 27 e, which are provided on the circuit board 24 and includes, for example, LEDs (light emitting diodes), and illuminates the dial 21 from the back side.
[0012]
On the circuit board 24, for example, a bullet-shaped LED is also arranged as the pointer light source 26. The pointer light source 26 enters the light receiving surface of the pointer 16. Note that a circuit section 25 including various electronic components is mounted on the circuit board 24. Further, a hole-shaped see-through region 24 a is formed in the circuit board 24, and a hole-shaped or transparent see-through region 31 a is also formed in the main body case 31. These are for passing information from the rear of the device to the front of the device, like the see-through area 21a of the dial 21.
[0013]
In such a configuration, from the eye point EP of the driver or the like sitting on the driver seat, as indicated by R1, the display device is passed through the front glass 51, the see-through area 21a of the dial 21, the see-through area 31a of the main body case 31, and the like. The display information by 22 is visually recognized. For example, when a warning design is displayed on the display device 22, the warning design is visually recognized from the eye point EP. Also, from the eye point EP, as indicated by R2, analog display information indicated by the pointer 16 which receives light from the pointer light source 26 and shines based on the color of the hot stamp layer through the smoked glass 51 is also visually recognized. You.
[0014]
[Problems to be solved by the invention]
By the way, in the above-described vehicle display device, the see-through area 21a of the dial 21 may be either a hole or transparent. Thus, for example, when the dial 21 is formed in a flat plate shape from a transparent material having no holes to form a transparent see-through area 21a, and when the dial 21 is viewed from the eye range EP, as shown in FIG. Since the dial 21 is installed directly on the dial with respect to the viewpoint center direction, when light R such as sunlight hits the dial 21, the reflected light R3 reflected by the see-through area 21a enters the eyes of the driver or the like, There is a problem that a reflected image such as a self image is reflected in the see-through area 21a, and the display of the display device 22 becomes difficult to see.
[0015]
Also, the see-through area 31a formed in the main body case 31 may be either a hole or a transparent. Therefore, for example, even when the see-through region 31a is formed of a transparent member such as PC or PMMA, when light R such as sunlight hits the see-through region 31a, the reflected light R4 reflected enters the eyes of the driver or the like, and the driver's own eyes. A reflected image such as an image is reflected in the see-through region 31a, and similarly, a problem of poor visibility occurs in that the display of the display device 22 becomes difficult to see.
[0016]
Therefore, when the see-through area 21a of the dial 21 and the see-through area 31a of the main body case 31 are formed of a transparent member, an AR (Anti Reflection) process is performed on the surface of the transparent member on the side facing the eye point EP, It is conceivable to suppress reflection, but in this case, there is a problem that the cost increases.
[0017]
On the other hand, when both the see-through area 21a of the dial 21 and the see-through area 31a of the main body case 31 are formed in the shape of a hole, the above-described problems of poor visibility and high cost can be avoided, but through the see-through areas 21a and 31a. The dial 21 can be touched, and the dial 21 is not protected from the outside, so that a new problem that security is impaired arises.
[0018]
Further, the above-described vehicle display device has a problem that the display device 22 is not integrated as a vehicle display device and is a separate unit, which causes an increase in cost.
[0019]
In view of the above-described conventional problems, the present invention can arbitrarily combine a desired display such as a digital display with the use of a see-through area with an analog display, and furthermore, is a low-cost and improved safety. It is an object of the present invention to provide a vehicle display device having a configuration.
[0020]
[Means for Solving the Problems]
The invention according to claim 1, which has been made to solve the above problem, is a flat dial having a hole-shaped or transparent see-through area and an analog display area in which a predetermined display design for analog display is formed, A pointer mechanism disposed on the front face of the dial and including a pointer for indicating the display design; a first dial in the form of a cylinder disposed on the back side of the dial; and one end of the first dial A cover glass for protecting the rear side of the dial, and a display device disposed on the inner wall of the first facing, wherein the cover glass reflects a display image of the display device to provide a see-through area. A display surface for guiding the vehicle to the eye point side of the vehicle.
[0021]
According to the first aspect of the present invention, there is provided a vehicle display device comprising: a flat dial having a hole-shaped or transparent see-through area and an analog display area formed with a predetermined display design for analog display; A pointer mechanism including a pointer for indicating a display design, a cylindrical first dial facing the back side of the dial, and a character attached to one end of the first dial. A cover glass that protects the back side of the board, and a display device disposed on the inner wall of the first return, the cover glass has a reflecting surface that reflects a display image of the display device and guides the display image to the eye point side through the see-through area. As a result, the rear side of the dial is protected by a cover glass attached to the first facing, ensuring safety. In addition to analog display, multi display and warning display It can be realized an integrated vehicle display unit which can utilize the display through the see-through area.
[0022]
According to a second aspect of the present invention, there is provided a vehicle display device according to the first aspect, wherein a film for amplifying reflection is formed on the reflection surface 22a. .
[0023]
According to the second aspect of the present invention, since a film for amplifying reflection is formed on the reflection surface 22a, the visibility of the display of the display device is further improved.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a state where a vehicle display device according to an embodiment of the present invention is mounted in a vehicle interior. The display device for a vehicle is a display device such as a liquid crystal display using an analog display using an instruction of a display design on a dial by hands, for example, an analog display using a tachometer, and a see-through area provided on the dial. It is possible to arbitrarily combine desired displays such as multi-displays.
[0025]
As shown in FIG. 1, the display device for a vehicle includes a meter module 1, a front glass 51, a first facing 81, a second facing 82, and a cover glass 83, and is attached to a meter hood 61. Have been. The meter hood 61 has an arch shape, and is formed using a part of an instrument panel (also simply referred to as an instrument panel) (not shown) at a front portion. The front glass 51 is attached to the front end of the second facing 82.
[0026]
In the meter module 1, a rear cover 10, a front cover 11, a pointer mechanism including a pointer 16, and a dial 21 are integrated. The meter module 1 is fixed to a lower part of the first dial 81.
[0027]
FIG. 2 shows a front view of the vehicle display device in FIG. 1, and FIG. 3 shows a sectional view of the meter module 1 constituting the vehicle display device. The meter module 1 includes a rear cover 10, a front cover 11, a movement 12, a pointer 16, a substrate 19, a circular dial 21, a dial light guide 23, a pointer light source 26, a dial light source 27, and a pointer light guide plate 29. Is done.
[0028]
The rear cover 10 and the front cover 11 are made of, for example, resin and fix the circular dial 21 and house a pointer mechanism including the hands 16 and the movement 12. The front cover 11 has a shape corresponding to the outside of the rotation range of the hands 16 on the circular dial 21. That is, since the pointer 16 normally rotates only about 270 degrees at the maximum, the front cover 11 extends a predetermined width downward from the center of the circular dial 21 so as to be located outside this rotation range. It has an extended shape.
[0029]
The movement 12 is, for example, a stepper motor, and is fixed to a substrate 19 and transmits power to a pointer 16 attached to a rotating shaft 12a. The pointer 16 is rotated by the movement 12 as a power source on the front side of the circular dial 21 within a predetermined rotation range around the rotation shaft 12a, and a predetermined display design formed in the analog display area 21b. Instruct. The display design is, for example, a number or a scale indicating the engine speed of the tachometer.
[0030]
The circular dial 21 is formed of, for example, PC resin in a plate shape, and has a hole-shaped or transparent see-through area 21a and an analog display area 21b on which a display design for analog display is formed.
[0031]
The see-through area 21a has a substantially circular shape having a predetermined radius from the center of the circular dial 21, and the analog display area 21b has a ring shape having a predetermined width surrounding the see-through area 21a.
[0032]
The display design of the analog display area 21b has scales 21b1 and characters 21b2 formed by filling a concave portion formed in the analog display area 21b with, for example, a white colorant.
[0033]
The pointer 16 has a base 16 b connected to a rotation shaft 12 a of the movement 12. The base 16b is integrated with a substantially cylindrical pointer cap 16a having an open lower surface. The pointer 16 is made of a tapered transparent resin having a light-guiding property, and a hot stamp layer (not shown) for shining the tip 16c with a predetermined color is formed on a lower surface of the tip 16c. In addition, a light receiving surface 16 d that receives light from the pointer light source 26 disposed on the substrate 19 via the pointer light guide 29 is formed on the base 16 b of the pointer 16.
[0034]
On the other hand, a dial light source 27 composed of, for example, an LED (light emitting diode) is arranged on the substrate 19, and light from the dial light source 27 is transmitted to a dial light guide unit integrally formed with the circular dial 21. The analog display area 21 of the circular dial 21 is illuminated via 23.
[0035]
Next, referring again to FIG. 1, the first dial 81 has a cylindrical shape extending toward the rear of the circular dial 21, for example, a cylindrical shape having a diameter gradually increasing toward the rear of the circular dial 21 (in other words, a cylindrical shape). , A megaphone shape), one end portion 81a has a lower portion to which the meter module 1 is fixed, the other end portion 81b has a shape obliquely cut at a predetermined angle, and a cover glass 83 is fixed. Is done.
[0036]
The inner wall of the first dial 81 is formed so as to coincide with or extend outside a line extending from a line connecting the tangent to the eye range ER and the outer periphery of the dial 21. In detail, as shown in FIG. 1, the inner wall of the first dial 81 matches or extends a line extending from a line (line A) connecting the upper tangent of the eye range ER to the lower end of the outer periphery of the dial 21. 1 is formed so as to coincide with or extend outside a line extending from a line (line B) connecting the lower tangent of the eye range ER and the upper end of the outer periphery of the dial 21 to the outside. Although not shown in the drawing, a line that is located on or outside the extension of the line connecting the left end of the eye range left eye and the outer right side of the dial 21 and that connects the left end of the eye range right eye and the outer left side of the dial 21 Is formed so as to coincide with or extend outside of the extension line.
[0037]
The cover glass 83 is formed of a transparent member such as a PC in a concave shape, and the flat surface of the dial 21 is arranged such that the reflection area from the reflective surface 83a when viewed from the eye range EP is outside the dial 21. Are mounted at a predetermined angle with respect to. In this example, the reflection area is set to be an area including the upper inner wall of the first dial 81.
[0038]
Further, a warning area W is formed at one end 81a of the first dial 81 as shown in FIG. 4, which is an enlarged view of a portion A in FIG. This warning area W is formed inside a vertical wall portion 81c integrally formed near the end portion 81a, a support member 84 fixed to the vertical wall portion 81c to form a space therein, and a support member 84. A substrate 85 fixed to the projections 84a, a warning light source 86 composed of an LED or the like mounted on the substrate 85, and a warning design pattern plate 87 fixed to an opening 84b formed in a part of the support member 84. Consists of
[0039]
The above-mentioned warning areas W are arranged in a necessary number so that those having different warning designs are concentric with the outer periphery of the dial 21.
[0040]
An opening 81d is formed in the upper inner wall of the first dial 81, and the display device 22 is mounted in a space formed by a lid member 81e that covers the opening 81d from the outside. The display device 22 is an LCD (liquid crystal display) or a fluorescent display tube (VFT), and performs, for example, arrow display by graphic display, multi-display of various characters related to navigation, and the like. The display device 22 is arranged so that the display image is reflected by the reflection surface 83a of the cover glass 83 and guided to the eye point EP through the see-through area 21a of the dial 21.
[0041]
Further, a second dial 82 is fixed to an end surface 84c of the support member 84 which is flush with the end surface of the one end 81a of the first dial 81. The second dial 82 is formed in a cylindrical shape extending toward the front of the circular dial 21, for example, a cylindrical shape (in other words, a megaphone shape) whose diameter gradually increases toward the front of the circular dial 21. Is fixed to the end surface 84c of the support member 84, and the front glass is fixed to the other end, that is, the front end, at a predetermined angle in a direction in which the lower part thereof is farther from the dial 21 than the upper part.
[0042]
Therefore, in such a configuration, when the vehicle display device is viewed from an eye point EP of a driver or the like sitting on a driver seat, as shown in FIG. 2, from the center of the circular dial 21, a see-through region 21a, an analog display region 21b and the warning area W each appear concentric, and the inner wall of the second dial 82 can be seen outside these.
[0043]
The inner wall of the first dial 81 is formed so as to coincide with or extend outside a line extending from the line connecting the tangent to the eye range ER and the outer periphery of the dial 21 as described above. When the dial 21 is viewed from the range ER, it is not reflected as the background of the dial and does not hinder the visibility of the dial 21.
[0044]
Therefore, from the eye point EP, the analog display information of the analog display area 51b indicated by the pointer 16 that receives the light from the pointer light source 26 and shines based on the color of the hot stamp layer through the front glass 51 is visually recognized. Further, behind the analog display on the dial 21, a warning display of the warning area W is visually recognized. Further, from the eye point EP, behind the analog display of the dial 21 and the warning display of the warning area W, the display device 22 is passed through the front glass 51, the see-through area 21 a of the circular dial 21 and the reflection surface 83 a of the cover glass 83. A virtual image of the display image (for example, arrow 44 in FIG. 2) from the user is also visually recognized.
[0045]
As described above, according to the present invention, the dial 21 is protected by the front glass 51 having the conventional configuration on the front side and protected by the cover glass 83 on the rear side, so that safety can be ensured. For example, even when the see-through area 21a of the dial 21 is formed in a hole shape, the dial 21 cannot be touched from the back side of the dial 21 due to the presence of the cover glass 83, and the safety of the dial 21 can be improved. Is secured.
[0046]
Further, in addition to the analog display on the dial 21, a warning display by a warning area W provided at the end of the first dial 81 and an inner wall of the first dial 81 that can be used through the see-through area 21 a of the dial 21. An integrated vehicle display unit that can visually recognize the graphic display from the display device 22 can be realized at low cost.
[0047]
In addition, the analog display of the dial 21, the warning display of the warning area W, and the multi-display of the display device 22 respectively provide a sense of front and rear with respect to the viewing direction, so that the dial 21 appears to float, and a three-dimensional effect is obtained. Can be directed. In addition, when the dial 21 is viewed from the eye range ER, the second wall 82 protrudes forward from the dial 21 so as to surround the dial 21 and looks three-dimensional. Will increase.
[0048]
Further, since the cover glass 83 is attached at a predetermined angle to the plane of the dial 21 so that the surface reflection area when viewed from the eye range EP is outside the dial 21, external light or characters Even if the light from the board light source 27 hits the cover glass 83 and is reflected, the reflected light does not pass through the inside of the dial 21 and returns to the eye range EP. The visibility of the display from the display device 22 through the see-through area 21a is improved.
[0049]
As described above, the embodiment of the present invention has been described. However, the present invention is not limited to this, and various modifications and applications are possible.
[0050]
For example, the cover glass 83 is formed in a concave shape in the above embodiment, but may be formed in a flat shape.
[0051]
Further, a film for amplifying the reflection of the display image of the display device 22 (that is, a film having a reflectance higher than the reflectance of the transparent material of the cover glass 83) is formed on the reflection surface 83a by means of vapor deposition, attachment, or the like. You may. In this case, the visibility of the display image on the display device 22 is further improved.
[0052]
When the dial 21 is formed of a transparent member such as a PC resin and the see-through region 21a is configured to be transparent instead of a hole, only the front side of the see-through region 21a or the front side of the dial 21 is formed. An anti-reflection (AR) process may be applied to the whole. In this case, the visibility is further improved by the effect of the antireflection treatment.
[0053]
In the present invention, the analog display area 21b of the dial 21 may be not only a tachometer but also another meter such as a speedometer, and various displays may be combined. Further, the display content of the display device 22 may be related to not only navigation and warning but also other vehicle information and personal use. Further, for example, a clock, a still image, or the like may be assigned to the see-through area 21a instead of the display device 22 for an economy class vehicle.
[0054]
【The invention's effect】
According to the first aspect of the present invention, the back side of the dial is protected by the cover glass attached to the first facing, and safety can be ensured. In addition to the analog display, the multi display and the warning can be provided. An integrated vehicle display unit that can use display through the see-through area can be realized at low cost.
[0055]
According to the second aspect of the invention, the display visibility of the display device is further improved.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a state in which a vehicle display device according to an embodiment of the present invention is mounted in a vehicle cabin.
FIG. 2 is a front view of the vehicle display device shown in FIG.
FIG. 3 is a sectional view of a meter module constituting the display device for a vehicle in FIG. 1;
FIG. 4 is a partially enlarged view showing a warning area of the vehicle display device of FIG. 1;
FIG. 5 is a diagram showing a configuration example of a vehicle display device proposed earlier.
FIG. 6 is a partial sectional view of the vehicle display device of FIG. 5;
[Explanation of symbols]
1 Meter Module 10 Rear Cover 11 Front Cover 16 Hands 21 Dial 21a See-through Area 21b Analog Display Area 21b1 Display Design 21b2 Display Design 22 Display Device 51 Front Glass 61 Meter Hood 81 First Look 81d Opening 82 Second Look 83 Glass 83a reflective surface

Claims (2)

A flat dial having a hole-shaped or transparent see-through area and an analog display area formed with a predetermined display design for analog display,
A pointer mechanism arranged on the front of the dial and including a pointer for indicating the display design;
A first tubular facing back disposed on the back side of the dial,
A cover glass attached to one end of the first dial and protecting the back side of the dial;
A display device disposed on the inner wall of the first return,
The display device for a vehicle, wherein the cover glass has a reflection surface that reflects a display image of the display device and guides the display image to the eye point side through the see-through region. The vehicle display device according to claim 1, wherein a film that amplifies reflection is formed on the reflection surface.

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