JP3774424B2 - Vehicle display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular display device that combines an analog display using a predetermined display design instruction by a pointer and a multi-display that displays a plurality of types of information by changing a predetermined electrical signal.
[0002]
[Prior art]
In recent years, with the spread of car navigation devices and the like, there is a tendency that a monitor device with a large amount of display information is installed in a vehicle. Since this monitor device displays a lot of information such as a guidance route and a traveling direction including a map, it is difficult for a driving driver to obtain necessary information instantly. Therefore, a display device capable of multi-display is incorporated in a display device for vehicles based on analog display using instructions of a predetermined display design by a conventional pointer, and displayed on the monitor device using this display device. A vehicle display device has been proposed in which particularly important information is displayed in an easy-to-understand manner.
[0003]
5 and 6 show this type of conventional vehicle display device. In particular, FIG. 5 is an exploded perspective view of this type of conventional vehicle display device, and FIG. 6 (A) and FIG. 6 (B). These are front views which show the state which the display apparatus for vehicles of FIG. 5 is performing the multi-display.
[0004]
As shown in FIG. 5, the conventional vehicle display device includes a mortar-shaped dial 91 having an inclined surface on which a display design is formed, and a pointer 92 having a shape that is bent corresponding to the inclined surface of the dial 91. , A light guide member 93 including a predetermined light source, a display device 94 composed of, for example, an LCD capable of displaying and outputting a plurality of types of information, a light guide member 93, a display device 94, etc. It is comprised from the front cover 95 attached to. The front cover 95 is formed with a circular display window 95a for multi-display. In this example, the pointer 92 is controlled to rotate by a movement arranged on the back surface of the dial 91, and indicates a number corresponding to the engine speed. That is, the analog display corresponds to the tachometer.
[0005]
In the analog display state, for example, as shown in FIG. 6 (A), a navigation character and message display 98 normally displayed on a monitor device such as a car navigation device, or for example, in FIG. 6 (B). As shown, a warning design display 99 appears through the display window 95 a of the front cover 95. In addition, a direction indication design 97 and the like are also arranged on the front surface of the meter case 96 as is known.
[0006]
[Problems to be solved by the invention]
However, the conventional vehicle display device has the following problems. That is, in the conventional display device for a vehicle, in order to enable multi-display in addition to analog display, the display device 94 for multi-display is arranged using a space formed by bending the pointer 92 for analog display. Has been. Along with this, the dial 91 must be mortar-shaped as described above, and various restrictions are imposed on the external shape design of the display device. Therefore, it is difficult to cope with many variations such as vehicle types and grades with small changes. In addition, the shape of the pointer is complicated, and the hot stamp layer is not easily formed. Furthermore, when an attempt is made to make a display with a relationship between the display device 94 for multi-display and the pointer 92, which is called closed contrast display, the display device 94 and the pointer 92 are flush with each other due to the above shape. In addition, since there is a limit to the proximity of these, a display error occurs. It is only necessary to make a hole in the display device 94 and pass the pointer therethrough, but this is not practical and increases the cost.
[0007]
Therefore, in view of the present situation described above, the present invention can realize a combination of analog display and multi-display at low cost, but has excellent visibility of display contents, compactness, excellent design, and various variations. It is an object of the present invention to provide a vehicular display device that can be easily handled.
[0008]
[Means for Solving the Problems]
The vehicle display device according to claim 1, which has been made in order to solve the above-described problem, is an analog display that uses an instruction of a predetermined display design by a pointer, and a multi-display that displays a plurality of types of information by changing a predetermined electric signal. A display device for a vehicle that combines display, a hole-shaped or transparent multi-display area 21a as the display window for multi-display, and an analog display area 21b in which the display design for analog display is formed A plate-shaped dial 21 made up of the dial, a pointer 16 that rotates the front side of the dial 21 around a pointer axis within a predetermined rotation range, and a movement disposed on the front side of the dial 21. 12, power transmission mechanism parts 13, 14, 15 that are arranged on the front side of the dial 21 and transmit the power of the movement 12 to the hands 16, and the multi-display area Disposed on the back side of the dial 21 corresponding to 21a, the via multi-display area, a multi-display device 22 for displaying output the plurality of kinds of information, wherein the said guidance axis of rotation of the movement The surface opposite to the side on which is inserted is a light receiving portion, the light receiving portion faces the surface of the multi display device, the multi display device has translucency, and the pointer The light source is arranged on the back side of the multi-display device, and supplies predetermined light to the light receiving portion of the pointer through the multi-display device .
[0009]
According to the first aspect of the present invention, the dial 21 includes a hole-shaped or transparent multi-display area 21a and an analog display area 21b, and has a flat plate shape. On the front side of the dial 21, a pointer 16, a movement 12, and a power transmission mechanism are arranged. The hands 16 transmit power from the movement 12 via the power transmission mechanism and indicate a predetermined display design in the analog display area 21b. Further, a plurality of types of information are displayed and output by the multi display device 22 through the hole-shaped or transparent multi display area 21a. As described above, the dial 21, the movement 12, and the power transmission mechanism are arranged on the front side of the dial 21, so that the dial 21 becomes flat. Accordingly, the pointer 16 also has a linear shape. Further, the display device 22 and the hands 16 are on the same plane. According to the first aspect of the present invention, the multi-display device 22 has translucency, and the light source of the pointer 16 is disposed on the back side of the multi-display device 22 and the multi-display device 22 is interposed therebetween. Thus, since predetermined light is supplied to the hands 16, the front of the dial 21 is clean.
[0010]
The vehicle display device according to claim 2, which has been made to solve the above-described problem, is the vehicle display device according to claim 1, wherein both the pointer 16 and the movement 12 are the power transmission mechanism portions 13, 14, 15 is arranged on the same side.
[0011]
According to the second aspect of the present invention, since the pointer 16 and the movement 12 are both disposed on the same side with respect to the power transmission mechanism portions 13, 14, and 15, the height of the pointer 16 and the movement 12 is increased. Overlapping, this part is made thin, and the protrusion to the front is suppressed.
[0012]
The vehicle display device according to claim 3, which has been made to solve the above-described problem, is the vehicle display device according to claim 1 or 2, wherein the pointer 16, the movement 12, and the power transmission mechanism section are the characters. It is characterized by being housed in a front cover 11 that can be attached to the front side of the panel 21 and unitized.
[0013]
According to the third aspect of the present invention, the pointer 16, the movement 12, and the power transmission mechanism are accommodated in the front cover 11 that can be attached to the front side of the dial 21 and are unitized. This makes it easy to deal with many variations such as vehicle types and grades.
[0014]
The vehicle display device according to claim 4, which has been made to solve the above problem, is the vehicle display device according to claim 1, wherein the multi-display area 21 a has a circular shape. The analog display area 21b has a ring shape with a predetermined width so as to surround the multi-display area 21a.
[0015]
According to the invention of claim 4, the multi display area 21a has a circular shape, and the analog display area 21b has a ring shape with a predetermined width surrounding the multi display area 21a. In addition to ease of arrangement, visibility is improved for both analog display and multi-display.
[0018]
The vehicle display device according to claim 5, which has been made to solve the above-described problem, is the vehicle display device according to claim 3 , wherein the front cover 11 has an outer shape corresponding to an outside of a rotation range of the pointer 16. It is characterized by being disposed outside this rotation range.
[0019]
According to the fifth aspect of the present invention, the front cover 11 has an outer shape corresponding to the outside of the rotation range of the pointer 16 and is disposed outside the rotation range. 12 and the power transmission mechanism part are disposed, a compact vehicle display device can be obtained.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an embodiment of a vehicle display device of the present invention. The vehicle display device is disposed, for example, on an instrument panel in front of the driver in the front portion of the passenger compartment. This vehicle display device is a part of an in-vehicle meter that combines an analog display based on an instruction of a predetermined display design by a pointer and a multi-display that displays a plurality of types of information by changing a predetermined electrical signal. Used.
[0021]
As shown in FIG. 1, the vehicle display device includes a front cover 11, a movement 12, a movement gear 13 (see FIG. 2), a relay gear 14, a pointer gear 15, a pointer 16, a dial 21, a multi-display device 22 (simply , Also referred to as a display device), including a light guide member 23 and the like.
[0022]
The front cover 11 is made of, for example, resin, and accommodates a pointer 16, a movement 12, a move gear 13 as a power transmission mechanism, a relay gear 14, a pointer gear 15, and the like. The front cover 11 has an outer shape corresponding to the outside of the rotation range of the pointer 16 and is disposed outside the rotation range. That is, since the pointer 16 normally rotates only about 270 degrees at the maximum, the front cover 11 has a triangular portion that covers the dial 21 so as to correspond to the outside of the rotation range. is doing. The front cover 11 is unitized so that it can be attached to the front side of the dial 21.
[0023]
The movement 12 transmits power to the hands 16 via the move gear 13, the relay gear 14, and the pointer gear 15. As the movement 12, for example, a known stepper motor can be used. The pointer 16 indicates a predetermined display design formed in the analog display area 21b while rotating within the predetermined rotation range about the pointer axis with the movement 12 as a power source. To do. This display design is, for example, a number or scale indicating the engine speed in the tachometer, or a number or scale indicating the speed in the speedometer.
[0024]
The dial 21 is made of, for example, polycarbonate, and includes a hole-shaped or transparent multi-display area 21a as a display window for multi-display and an analog display area 21b on which a display design for analog display is formed. In particular, the multi display area 21a has a circular shape, and the analog display area 21b has a ring shape with a predetermined width so as to surround the multi display area 21a.
[0025]
The display device 22 is, for example, a known LCD (liquid crystal display), and is arranged on the back side of the dial 21 to display various characters and warning designs related to navigation. Furthermore, the light guide member 23 disposed on the back surface thereof is a transparent resin plate that guides light from a predetermined light source to the dial 21 or the like.
[0026]
The structure of the display device for a vehicle will be more apparent with reference to FIG. FIG. 2 is a cross-sectional view in the vicinity of the center of the vehicle display device of FIG. As shown in FIG. 2, the front cover 11 houses a pointer 16, a movement 12 and a move gear 13, a relay gear 14, a pointer gear 15, and the like. The movement 12 transmits its power to the hands 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 and 18.
[0027]
Specifically, the move gear 13 is directly connected to the rotation shaft 13 a of the movement 12 that passes through holes 17 a and 18 a formed in the upper and lower support plates 17 and 18. In the relay gear 14, the rotation shaft 14 a rotates 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 rotation shaft 15 a penetrating 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.
[0028]
The pointer shaft 16 b of the pointer 16 is connected to the rotating shaft 15 a of the pointer gear 15. The pointer shaft portion 16b is integrated with a substantially cylindrical pointer cap 16a having an open bottom surface. The pointer cap 16 a holds the pointer balancer 16 c together with the upper end of the pointer 16. The pointer 16 is made of a tapered transparent resin having a light guide property, and a hot stamp layer (not shown) for making the pointer shine in a predetermined color is formed on the lower surface thereof. A light receiving surface that receives light from the pointer light source 26 is formed at the base end portion.
[0029]
Based on the thickness (or height) of the pointer 16, the gears 13, 14, 15 and the movement 12 arranged in this way, the front cover 11 has a height (or thickness) W1. The front cover 11 is unitized and has a structure that can be replaced as appropriate. Therefore, by removing the front cover 11 and the dial 21 side, the movement 12, the gears 13, 14, 15 and the hands 16 can be easily removed from the dial 21 side. Therefore, it is possible to easily cope with many variations due to differences in vehicle type and grade.
[0030]
On the other hand, the dial 21 is supported by the dial look-back 28 although not shown in FIG. The peripheral portion of the dial 21 has a slightly lifted shape. A display device 22 for multi-display is attached to the back surface of the dial 21. The display device 22 is electrically connected to a connector portion 24a mounted on the circuit board 24 for power supply and display control. On the back side, a light guide member 23 having a brightness enhancement filter 23a formed on the surface is further disposed. The light guide member 23 guides light from dial light sources 27 a to 27 e made of, for example, LEDs (light emitting diodes) disposed on the circuit board 24, so that the dial 21 and the display device 22 are on the back side. Illuminate from.
[0031]
On the circuit board 24, for example, a bullet-type LED is also disposed as the pointer light source 26. The pointer light source 26 passes through the display device 22 and enters the light receiving surface of the pointer 16. For this reason, at least this part of the display device 22 has translucency. On the circuit board 24, a circuit unit 25 including various electronic components is mounted. Since the multi-display device 22 has translucency, predetermined light can be supplied to the pointer 16 without arranging the pointer light source 26 in front of the dial 21. Therefore, since the front of the dial 21 is clear, the design is excellent and the visibility of necessary information is improved.
[0032]
Next, a more preferred embodiment of the front cover 11 will be described with reference to FIG. FIG. 3 is a cross-sectional view showing another embodiment of the front cover and parts related thereto. In FIG. 3, parts common to those in FIG. 2 are denoted by the same reference numerals, and redundant description is omitted.
[0033]
As shown in FIG. 3, in the present embodiment, the arrangement of the movement 12 is different from that of the embodiment of FIG. That is, here, the movement 12 is disposed on the same side as the hands 16 with respect to the upper and lower plates 17 and 18. In other words, the pointer 16 and the movement 12 are both disposed on the same side with respect to the gears 13, 14, and 15. Accordingly, the thicknesses (or heights) of the pointer 16 and the movement 12 are overlapped, and this portion is thinned, so that the forward protrusion is suppressed. That is, the front cover 11 ′ having a thickness (or height) W2 smaller than the thickness (or height) W1 is obtained. As a result, thinning and downsizing of the entire apparatus are promoted, and the design is excellent. In addition, since the protrusion is suppressed, the visibility of necessary information is improved.
[0034]
Further, how light travels in analog display and multi-display will be described with reference to FIG. FIG. 4 is a diagram illustrating how light travels in analog display and multi-display in the embodiment shown in FIG. In FIG. 4, parts common to those in FIG. 2 are denoted by the same reference numerals, and redundant description is omitted.
[0035]
As indicated by a dotted line with an arrow in FIG. 4, the light emitted from the pointer light source 26 passes through the display device 22 and enters the light receiving surface of the proximal end portion of the pointer 16. This incident light is reflected by the reflecting surface at the upper base end of the pointer 16 and then repeatedly reflected inside the pointer 16 and traveling in the direction of the distal end. The eye point EP is reached. At this time, the pointer 16 is visually recognized as shining with a color based on the hot stamp layer formed on the lower surface of the pointer 16. On the other hand, as indicated by broken lines with arrows in FIG. 4, light (display information) from the multi-display display device 22 is transmitted through the hole-shaped or transparent multi-display area 21a, and a driver or the like as indicated by R2. The eye point EP is reached. Thus, the contents of predetermined analog display and multi-display are visually recognized from the driver side. When the dial 21 is illuminated, the light also directly reaches the eye point EP such as a driver.
[0036]
As described above, according to this embodiment, the combination of analog display and multi-display can be realized at low cost, but the display content is excellent in visibility, compact, excellent in design, and various variations. A vehicle display device that can be easily handled can be obtained.
[0037]
In addition, this invention is not limited to the said embodiment, In the range which does not change the summary, it can change suitably. For example, in the present invention, multiple displays may be combined with other meters as well as tachometers. Further, the contents of the multi-display may be related not only to navigation and warnings but also to other vehicle information and personal use.
[0038]
【The invention's effect】
As described above, according to the first aspect of the present invention, the dial 21 includes the hole-shaped or transparent multi-display area 21a and the analog display area 21b and has a flat plate shape. On the front side of the dial 21, a pointer 16, a movement 12, and a power transmission mechanism are arranged. The hands 16 transmit power from the movement 12 via the power transmission mechanism and indicate a predetermined display design in the analog display area 21b. Further, a plurality of types of information are displayed and output by the multi display device 22 through the hole-shaped or transparent multi display area 21a. As described above, the dial 21, the movement 12, and the power transmission mechanism are arranged on the front side of the dial 21, so that the dial 21 becomes flat. Accordingly, the pointer 16 also has a linear shape. Further, the display device 22 and the hands 16 are on the same plane. Therefore, the conventional display error does not occur during the close contrast display. Moreover, since the structure of each part is also simplified, a cost reduction is brought about. Furthermore, since the shape becomes simple, the degree of freedom in external design is expanded. According to the first aspect of the present invention, the multi-display device 22 has translucency, and the light source of the pointer 16 is disposed on the back side of the multi-display device 22 and the multi-display device 22 is interposed therebetween. Thus, since predetermined light is supplied to the hands 16, the front of the dial 21 is clean. Therefore, it is excellent in design and the visibility of necessary information is improved.
[0039]
According to the second aspect of the present invention, since the pointer 16 and the movement 12 are both disposed on the same side with respect to the power transmission mechanism portions 13, 14, and 15, the height of the pointer 16 and the movement 12 is increased. Overlapping, this part is made thin, and the protrusion to the front is suppressed. Therefore, downsizing is promoted and the design is excellent. In addition, since the protrusion is suppressed, the visibility of necessary information is improved.
[0040]
According to the third aspect of the present invention, the pointer 16, the movement 12, and the power transmission mechanism are accommodated in the front cover 11 that can be attached to the front side of the dial 21 and are unitized. This makes it easy to deal with many variations such as vehicle types and grades.
[0041]
According to the invention described in claim 4, the multi display area 21a has a circular shape, and the analog display area 21b has a ring shape with a predetermined width surrounding the multi display area 21a. In addition to ease of arrangement, visibility is improved for both analog display and multi-display. Manufacturing is also facilitated, further reducing costs.
[0043]
According to the fifth aspect of the present invention, the front cover 11 has an outer shape corresponding to the outside of the rotation range of the pointer 16 and is disposed outside the rotation range. 12 and the power transmission mechanism part are disposed, a compact vehicle display device can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an embodiment of a vehicle display device of the present invention.
2 is a cross-sectional view in the vicinity of the center of the vehicle display device of FIG. 1. FIG.
FIG. 3 is a cross-sectional view showing another embodiment of the front cover and parts related thereto.
4 is a diagram showing how light travels in analog display and multi-display in the embodiment shown in FIG. 2; FIG.
FIG. 5 is an exploded perspective view of a conventional vehicle display device of this type.
6 (A) and 6 (B) are front views showing a state in which the vehicle display device of FIG. 5 is performing multi-display.
[Explanation of symbols]
11 Front cover 12 Movement 13 Move gear (power transmission mechanism)
14 Relay gear (power transmission mechanism)
15 Pointer gear (power transmission mechanism)
16 Pointer 21 Dial 22 Display device (multi-display device)
23 Light guide member 21a Multi display area 21b Analog display area

Claims (5)

A display device for a vehicle that combines an analog display using instructions of a predetermined display design by a pointer and a multi-display that displays a plurality of types of information by a change in a predetermined electrical signal,
A plate-shaped dial comprising a hole-shaped or transparent multi-display area as the display window for multi-display, and an analog display area on which the display design for analog display is formed,
A pointer that rotates within a predetermined rotation range around the pointer axis on the front side of the dial;
A movement arranged on the front side of the dial;
A power transmission mechanism that is arranged on the front side of the dial and transmits power from the movement to the hands;
A multi-display device that is arranged on the back side of the dial corresponding to the multi-display area and displays and outputs the plurality of types of information via the multi-display area ,
The pointer has a light receiving portion opposite to the side on which the rotation shaft of the movement is inserted, the light receiving portion faces the surface of the multi-display device,
The multi-display device has translucency, and the light source of the pointer is disposed on the back side of the multi-display device, and supplies predetermined light to the light-receiving portion of the pointer through the multi-display device To
A display device for a vehicle. The vehicle display device according to claim 1,
The pointer and the movement are both disposed on the same side with respect to the power transmission mechanism.
A display device for a vehicle. The vehicle display device according to claim 1 or 2,
The pointer, the movement, and the power transmission mechanism unit are housed in a front cover that can be attached to the front side of the dial, and are unitized.
A display device for a vehicle. The vehicle display device according to any one of claims 1 to 3,
The multi display area has a circular shape, and the analog display area has a ring shape with a predetermined width so as to surround the multi display area.
A display device for a vehicle. The vehicle display device according to claim 3 ,
The front cover has an outer shape corresponding to the rotation range of the pointer, and is disposed outside the rotation range.
A display device for a vehicle.

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