JPH08227498A - Head-up display for vehicle and navigation device using same - Google Patents

Abstract

PURPOSE: To provide the vehicle head-up display which can be fitted afterward to a vehicle which does not have its fitting place designed. CONSTITUTION: Display light emitted by a fluorescent display tube 6 is reflected by a 1st reflecting mirror 8 and part of it is further reflected by a 2nd half- mirror 3, so that a driver can see a display figure superimposed on a front detector. The two reflectors are made concave and reduced in size, and a DC motor driving them is reduced in size. The reflection angle of the 1st reflecting mirror 8 is adjusted by the DC motor 15 and the reflection angle of the 2nd reflecting mirror 3 is adjusted by right and left supports 4 and a free arm 5. On the basis of course guidance information from a course guidance information providing equipment connected to a connector 11, a microcomputer 13 controls the display light of a VFD 6. Further, the luminance of the VDF 6 is adjusted by an optical sensor according to the light intensity of external light. The device is fixed to a dashboard with fixtures 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle head-up display and a navigation device using the same, and more particularly to a vehicle head-up display for displaying route guidance information and a navigation device using the same.

[0002]

2. Description of the Related Art A conventional vehicle head-up display is of a type embedded in a dashboard as disclosed in Japanese Utility Model Laid-Open No. 62-181436. It had a complicated optical system to realize a distant display. And, it had a retractable reflector, and even if the position of the driver's eyes changed, it was possible to deal with it by adjusting the retractable angle of the reflector. Further, when the front portion of the vehicle is cleaned or when the head-up display is not used, the reflector can be tilted so that cleaning can be performed easily and front visibility when the head-up display is not used is improved.

As other conventional head-up displays for vehicles, there are many cases where a windshield is directly processed to be used as a combiner.

[0004]

However, since the conventional vehicle head-up display is arranged only for a specific vehicle, the reflection angles of the reflection plates other than the semitransparent reflection plate used as the combiner are adjusted. Was not very necessary. Further, since it is embedded in the dashboard, there are no strict restrictions on the dimensions, and since it has a complicated optical system to realize a distant display, the external dimensions are large. Therefore, it is not attached to the place designed in advance in the production process of the vehicle, but it is attached after the completion of the vehicle as necessary even if the designed place or metal fittings do not exist on the vehicle side,
That is, there is a problem that "retrofitting" is disadvantageous.

FIG. 7 is a diagram showing a case where a windshield 31 is directly processed and used as a combiner in a conventional vehicle head-up display.

Referring to FIG. 7, a display light A is reflected on the front surface 63α of the combiner portion 63 in the windshield 31, and a display light B is reflected on the rear surface 31β of the windshield 31 to show a display to the driver. Is doubled and difficult to see. As described above, in the case where the windshield directly processed is used as the combiner, there is a problem that it is difficult to process the back surface and it is difficult to solve the double image.

The present invention has been made in order to solve the above problems, and can be easily mounted on a vehicle whose mounting location is not designed in advance so as not to hinder driving. It is an object of the present invention to provide a vehicular head-up display that is capable of, that is, "retrofitting". Further, another object of the present invention is to provide a user-friendly head-up display for vehicles in which duplication of display diagrams is prevented.

[0008]

A vehicle head-up display according to a first aspect of the present invention includes a light source that receives and displays route guidance information from the outside and emits predetermined graphic display light based on the route guidance information. , Reflects the emitted graphic display light 2
No more than one reflector, a semi-transparent reflector that reflects a part of the reflected graphic display light to the driver, and at least one of the reflectors is a concave surface, and the head-up display is attached to the vehicle. And a mounting means.

In the vehicle head-up display according to the first aspect, predetermined graphic display light is emitted based on the route guidance information, and the emitted graphic display light is reflected by two or less reflectors and reflected. A part of the generated graphic display light is reflected by the driver by the semi-transparent reflecting plate, and at least one of the reflecting plates is a concave surface, so that the head-up display can be attached to the vehicle. The use of a concave type allows a small type to be used, and since the number is very small, the entire vehicle head-up display can be downsized and the cost can be reduced.

A vehicle head-up display according to a second aspect is the vehicle head-up display according to the first aspect, wherein a transmission line connecting means for receiving the route guidance information and a light source based on the received route guidance information. And a display control means for controlling the graphic display light.

According to a second aspect of the present invention, there is provided the vehicle head-up display according to the first aspect, wherein the route guidance information is received, and the graphic display light of the light source is controlled based on the received route guidance information. To be done.

A vehicle head-up display according to a third aspect is the vehicle head-up display according to the first or second aspect, further comprising adjusting means for adjusting the reflection angle of the reflection plate.

In the vehicle head-up display according to claim 3, in the vehicle head-up display according to claim 1 or 2, since the reflection angle of the reflector is adjusted, the driver's position is changed even if the vehicle type or arrangement changes. It is possible to adjust so that the graphic display light is reflected according to the posture.

In the vehicle head-up display according to claim 4, in the vehicle head-up display according to claim 3, the adjusting means can be remotely controlled.

In the vehicle head-up display according to claim 4, in the vehicle head-up display according to claim 3, since the adjusting means can be remotely controlled, the driver can easily reflect while sitting in the driver's seat. It is possible to adjust the reflection angle of the plate.

A vehicle head-up display according to a fifth aspect is the vehicle head-up display according to any one of the first to fourth aspects, in which the light source is provided with a fluorescent display tube or a high-intensity light emitting diode.

In the vehicle head-up display according to claim 5, in the vehicle head-up display according to any one of claims 1 to 4, since the light source includes a fluorescent display tube or a high-intensity light emitting diode, It is possible to obtain a graphic display with sufficient brightness even when the sun is illuminated.

A vehicle head-up display according to a sixth aspect of the present invention is the vehicle head-up display according to any one of the first to fifth aspects, wherein the back surface of the semi-translucent reflector is subjected to antireflection coating or antireflection treatment. Has been done.

A vehicle head-up display according to a sixth aspect is the vehicle head-up display according to any one of the first to fifth aspects, wherein the back surface of the semi-transmissive reflector is subjected to antireflection coating or antireflection treatment. Therefore, it is possible to prevent duplication of graphic display due to reflection on the back surface of the reflector. This also reduces the reflection of the head-up display on the windshield.

A vehicle head-up display according to a seventh aspect is the vehicle head-up display according to any one of the first to sixth aspects, wherein the head-up display is exposed to external light from the outside, and the light of the external light is emitted. An adjusting means for adjusting the brightness of the light source based on the intensity is provided.

In the vehicle head-up display according to a seventh aspect, in the vehicle head-up display according to any one of the first to sixth aspects, the brightness of the light source is adjusted based on the light intensity of the external light. Unlike in the daytime, the brightness of the light source is suppressed at night when the brightness is not so high, so that it is possible to save the driving visibility without hindering it.

A navigation device according to an eighth aspect of the present invention is a head-up display according to any one of the first to seventh aspects, display means for inputting route guidance information and performing display based on the inputted route guidance information, and a head. An up display and a route guidance information output means for outputting route guidance information to each of the display means are provided.

That is, in the navigation device according to the eighth aspect, route guidance information is output from the route guidance information output means to each of the head-up display and the display device.
A display based on the route guidance information is performed in each of the head-up display and the display device.

A navigation device according to a ninth aspect is the navigation device according to the eighth aspect, wherein the route guidance information output means detects a position of a vehicle and a road map memory that stores road map data. And means.

That is, in the navigation device according to the ninth aspect, the road map data is stored in the road map memory and the position of the vehicle is detected by the position detecting means.

A navigation device according to a tenth aspect,
The navigation device according to claim 8 or 9, wherein a road map is displayed on the display means, and information indicating a vehicle state is displayed on the head-up display.

A navigation device according to claim 11 is
The navigation device according to claim 8 or 9, wherein a road map is displayed on the display means, and navigation information necessary for driving is displayed on the head-up display.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

(1) First Embodiment FIGS. 1 and 2 are internal structural views of a vehicle head-up display (HUD) 1 according to a first embodiment of the present invention. FIG. 1 is a perspective view. 2A is a plan view, FIG. 2B
Is a side view.

Referring to FIGS. 1 and 2A and 2B, the HUD 1 includes a display body 2, a semi-transparent second reflecting mirror 3, and a second reflecting mirror 3. 2 includes a support 4 and a swivel arm 5.

The display body 2 is further equipped with a fluorescent display tube (VFD: Vaccuum Fluorescent Display) serving as a light source of display light.
) 6, a radiator 7 thereof, a substrate 21, a first reflecting mirror 8 that reflects the display light emitted from the VFD 6 to the second reflecting mirror 3, and a drive unit 9 that rotates the first reflecting mirror 8. VFD6
And a connector 11 for connecting to an external route guidance information providing device (not shown).

The control unit 10 further controls the light intensity of the display light of the VFD 6 by the light intensity of the extraneous light.
And a microcomputer 13 for outputting a display control command to the VFD 6 based on data from an external route guidance information providing device connected by the connector 11, and an electronic circuit board 14 for operating the VFD 6 according to the control command. .

The drive unit 9 includes a DC motor 15 and a gear 16 that connects the DC motor 15 and the first reflecting mirror 8.

The display main body 2 has a fixture 19 for installation on a dashboard, an opening 17 through which reflected light from the first reflecting mirror 8 to the second reflecting mirror 3 passes, and a connector 11.
And an opening 18 for.

In FIGS. 1 and 2A and 2B,
The VFD 6 suitable for miniaturization is used as the light source of the display. The optical system uses two reflecting mirrors, a first reflecting mirror 8 and a semi-transparent second reflecting mirror 3.

HUD 1 with fixture 19 on the dashboard
Is installed, the gear 16 is rotated by the DC motor 15, the second reflecting mirror 8 is rotated, and the reflection angle of the second reflecting mirror 8 is adjusted.
Moreover, the second reflecting mirror 3 is formed by the left and right supports 4 and the free arm 5.
So that the display light emitted from the VFD 6 is reflected by the first reflecting mirror 8 and a part of the display light is reflected by the semi-transparent second reflecting mirror 3 to reach the driver. To
The driver can see the display image overlapping the scenery in front.

The first reflecting mirror 8 is a flat surface or a gentle concave surface. In the vehicle HUD of the present invention, by making the reflecting mirror concave, it is possible to enlarge the reflected display diagram, and to reduce the size of the reflecting plate. Therefore, the first reflecting mirror 8 preferably has a concave surface in order to increase the magnification of the display. The miniaturization and the reduction in the number of the reflectors realize the miniaturization of the entire HUD. The material of the first reflecting mirror 8 may be glass, but a resin molded product coated with a reflective film is used for cost reduction.

The first reflecting mirror 8 is driven by the DC motor 15, and the reflection angle of the light emitted from the VFD 6 is adjusted. Since the first reflecting mirror 8 may have substantially the same size as the VFD 6 which is the light source, it is smaller than the second reflecting mirror 3, and the DC motor 15 for driving can use a small device, and the cost can be reduced. The DC motor 15 can be operated from the driver's seat by a remote controller (not shown). This is because the vehicular HUD of the present invention is intended for "retrofitting", so that the driver can adjust the display light to be in the most visible state while sitting in the driver's seat. .

The second reflecting mirror 3 is made of a semi-translucent material and has a concave surface for enlarging the display. The material may also be glass, but in consideration of safety at the time of collision and cost reduction, a resin molded article is suitable like the first reflecting mirror 8, and one having a reflective coating on the reflecting surface, or a semi-transparent one. Use one.

The second reflecting mirror 3 is connected to and supported by the display main body 2 by the left and right supports 4 (for example, metal fittings) and the free arm 5. The relative angle between the two is the left and right support 4
You can make rough adjustments with and fine-adjust with the free arm 5. The numbers of the left and right support members 4 and the free arms 5 are not limited to those in this embodiment, and depending on the case, the left and right support members 4,
Although only one of the free arms 5 may be used, it is desirable to use a plurality of arms and a support in order to increase the rigidity and reduce the vibration of the second reflecting mirror 3 due to the vibration of the vehicle body.

The second reflecting mirror 3 having semi-translucency functions as a so-called combiner. At this time, a non-reflective coating is formed on the back surface or a plane having a different angle from the front surface is formed, or a small angle is formed on the back surface, so that the reflection on the front surface and the back surface of the second reflecting mirror 3 does not occur twice. The double image is eliminated by applying non-reflective processing such as unevenness, and by scattering unnecessary reflected light in a direction that does not enter the eyes of the driver. This makes the display diagram easier to see. Further, it is possible to reduce the HUD's reflection on the windshield.

FIG. 3 shows the HU according to the first embodiment of the present invention.
In the example in which the second reflecting mirror 3 of D1 is processed to prevent image duplication, (a) is a view showing a non-reflective coating, and (b) is a back surface having a different angle from the front surface. It is a figure showing what constituted (for example, level difference processing).

With reference to FIG. 3, the second reflecting mirror 3 of the first embodiment HUD1 of the present invention is installed in front of the windshield 31 as seen from the driver.

In FIG. 3A, the non-reflective coating applied to the back surface of the second reflecting mirror 3 prevents reflection on the back surface of the second reflecting mirror 3 and prevents duplication of the display diagram.

As the material of the antireflection coating, a material having a lower refractive index than that of the material of the reflecting mirror (resin molding such as plastic or glass) is coated with a predetermined film thickness. As a specific example, MgF ₂ (magnesium fluoride) is used as λ / 4.
The simplest is to coat to a thickness of n. Where λ is the wavelength of the light from the light source, n is the refractive index of MgF ₂ (n
= 1.38). In practice, the coating may have two or three layers to widen the effective wavelength range and further reduce residual reflection.

In FIG. 3B, the reflected light reflected by the back surface 3β is the same as the reflected light of the display view reflected by the driver's front surface 3α due to the step processing performed on the back surface 3β of the second reflecting mirror 3. Are scattered in different directions, preventing duplicated views.

Although not shown, the back surface 3β of the second reflecting mirror 3
There may be a case where rough surface processing (that is, processing such as frosted glass) is applied to the above, but in this case, even if it is possible to prevent duplication of the display diagram, the front view cannot be seen through the second reflecting mirror 3, so that a complete view cannot be seen. It does not function as a HUD.

Another advantage of separating the windshield from the second reflecting mirror 3 is that dew condensation or fogging does not occur even when the outside air temperature drops.

The HUD 1 of the first embodiment of the present invention is
As described above, VFD6 is used as the light source. VFD6
Since it can achieve a brightness of about 1000 cd / cm ^2, sufficient brightness can be secured even if the effects of the loss of the reflector and the enlargement of the display are taken into consideration, and it is displayed on the dashboard illuminated by the sun during the day. Can be identified.

However, such brightness is not necessary at night, which rather causes a decrease in the external visual field. Therefore, the optical sensor 12 is attached to the display main body 2, the external light is sensed, and the brightness of the VFD 6 is adjusted according to the external light. This is effective for saving power and improving the visibility of the display.

As another alternative of the VFD 6, high-luminance light emitting diodes (LED / Light Emitting Diodes) may be used in a matrix.

The size of the display surface 41 of the VFD 6 is about 15 ×
When it is 25 mm, the size of the display image reflected to the driver is enlarged to about 25 × 45 mm.

The control of the display light such as turning on and off the display light of the VFD 6 is performed by the microcomputer 13 built in the display body 2. The microcomputer 13 has a standardized communication interface (for example, what is generally known as RS-232C specifically), and the route guidance information such as an external navigation system is provided from the connector opening 18 to the connector 11. It is connected to the providing device, receives only necessary data such as the remaining distance to a predetermined intersection and the data of the traveling direction, and outputs a display control command to the VFD 6.

A 16-bit class microcomputer is used in the navigation system, and most of them have a built-in communication interface. Therefore, if such a system is used, various types of navigation systems can be used in vehicles.
UD1 can be attached.

Alternatively, the display control may be designated from the navigation system.

FIG. 4 shows the HU of the first embodiment of the present invention.
It is a figure which shows the example of the display content of VFD6 of D1. FIG.
(A), (b) is a figure which shows the display content of VFD6 of HUD1 when connected with a navigation system, the remaining distance to each crossing point to the crossing point, and the 16 directions to go to the destination, It is a figure which shows a crossing point shape.
And, (a) is a diagram showing a simple display pattern with a small number of segments, and (b) is a diagram showing a display pattern with more emphasis on “legibility” than in (a).

4 (a) and 4 (b), on the display surface 41 of the VFD 6, a remaining distance display 43 to a crossing point by a plurality of blocks and a traveling 16-direction and crossing point shape display 45 by a radial arrow are shown. And are shown.

The size of the display surface 41 is, for example, vertical a≈1.
It is 5 mm and the width b is approximately 25 mm. As the display control method, for example, in the display pattern of FIG. 4A, the remaining distance display 43 to the intersection point is turned on according to the remaining distance to the intersection point as the intersection point approaches. The number decreases from 4 → 3 → 2 → 1, and in the display 16 azimuths and crossing point shape display 45, the crossing point shape blinks or lights with low brightness
The direction of travel lights up with high brightness. In the display pattern of FIG. 4B, the remaining distance to the intersection is displayed as the intersection approaches.
3, the number of lighting blocks is reduced as in the case of (a), the traveling 16 azimuth and crossing point shape display 45 is lit or blinking (for example, in blue) the crossing point shape, and the arrow at the tip of the radiation pattern indicates the traveling direction. Lights up (for example, in orange). The number of segments is, for example, 2 in (a).
In 1 and (b), it becomes 37.

The combination of the graphic of the display pattern and the display control method is not limited to the above example. Further, the block diagram of the remaining distance display 43 to the crossing point, the number of blocks of the traveling 16 directions and the crossing point shape display 45 are not limited to this example, and the remaining distance display 43 to the crossing point may be a gauge shape. Alternatively, the distance to the intersection in FIGS. 4A and 4B may be indicated by a number as shown in FIG. 4C described later.

FIG. 4C is a diagram showing the display contents of the VFD 6 of the HUD 1 when connected to the front obstacle sensor, and is a diagram showing the approach warning to the obstacle and the distance to the obstacle. is there.

Referring to FIG. 4 (c), an approach warning display 47 represented by an asterisk and a three-digit distance display (unit: m) 49 to the obstacle are shown on the display surface 41 of the VFD 6. Be done.

The display control method is, for example,
Approach warning display 47 when approaching a set distance on an obstacle
Flashes and the distance to the obstacle is displayed. The number of segments is, for example, 21 in the distance display 49 (7 for each number) and 23 in total for each of the approach warning displays 47 and m.

By the display as shown in FIGS. 4 (a) and 4 (b),
Route guidance by HUD1 is smoothly performed. Further, the display as shown in FIG. 4 (c) facilitates detection of an obstacle ahead.

According to the display contents as shown in FIGS. 4A and 4B, after the route is set by the navigation system,
Even if the monitor used to display a map in the past is switched to a television, the driver can easily reach the destination by checking the display diagram on the HUD 1. Furthermore, FIG.
In addition to the display contents of (a) and (b), a menu screen for selecting a destination list such as a connected navigation system, a map display, and route calculation to the destination is displayed to display the man-machine interface. It can also be used as a part.

Thus, in the field of information display of vehicles, if it is used for route guidance by navigation, warning and meter information by obstacle sensor, traffic information such as traffic jam by VICS, etc., the visibility of the driver is improved. It is effective.

The fixture 19 for installing the HUD 1 of the first embodiment of the present invention on the dashboard uses a double-sided adhesive tape or a sheet fastener. If the sheet fastener is used, the HUD 1 can be easily removed and cleaned. In addition, when traveling on a rough road in a rural area is expected, it may be fixed more firmly by mounting with metal fittings or screws.

(2) Second Embodiment VFD6 of FIG. 4 of HUD1 of the first embodiment of the present invention
The size of the display surface 41 is about 45 mm in width a,
When it is desired to increase the length of the vertical b, the VFD 6 having a long vertical length must be used. However, when installing the vehicle HUD on the dashboard, it is desirable that the vehicle thickness be as thin and small as possible. Therefore, even if the VFD is mounted in a plane or in a state close to the plane by using the third reflecting mirror and the vertically long VFD is used,
The thickness of the UD can be reduced.

FIG. 5 is a side view showing the structure of the display main body 2'of the vehicle HUD according to the second embodiment of the present invention.

Referring to FIG. 5, the structure of the display main body 2'is almost the same as the structure of the display main body 2 of the vehicle HUD 1 of the first embodiment shown in FIG. By installing the third reflecting mirror 20 between the reflecting mirror 8 and
The thickness D of the display body 2'is thin. The same parts as those described in FIGS. 1 to 4 are used as the respective parts of the display main body 2'and the second reflecting mirror (not shown). The light emitted from the VFD 6 is reflected by the third reflecting mirror 20 to the first reflecting mirror 8, and is reflected by the first reflecting mirror 8 to the second reflecting mirror 3, so that the driver uses the semi-transparent second reflecting mirror 3. A view of some of the reflected display light can be seen.

Although it is possible to realize a HUD having only one reflecting plate, that is, having only the second reflecting mirror 3 which is a combiner, when only one reflecting plate is used, the magnifying power of the display diagram is slightly high. descend.

As described above, by using a very small number of reflectors, such as three or less, and making the reflector concave, the reflector can be miniaturized, and the miniaturization of the reflector further reduces the size of the reflector drive unit. The miniaturization of the entire vehicle HUD can be realized by the miniaturization. (For example, H of the first embodiment
The size of the display unit body 2 of UD1 is vertical x horizontal x thickness is 80 x
It can be designed to be 60 × 20 mm. )
Therefore, the cost can be reduced, and the vehicle can be easily attached to any vehicle whose attachment location is not designed in advance so as not to interfere with driving, that is, can be easily “retrofitted”. Moreover, this attachment can be easily removed with an adhesive tape or the like.

(3) Third Embodiment FIG. 6 is a block diagram showing the configuration of a navigation device according to a third embodiment of the present invention.

Referring to the figure, the navigation device comprises a navigation device body 100, a head-up display 110 shown in FIG. 1 or 5, and a CRT (Cathode Ray Tube) 120 for displaying a road map or the like. It

Further, the navigation device body 100 is
A position detecting device 101 for detecting the current position of the vehicle based on a signal from a GPS satellite and a speed signal of the vehicle, a road map memory 103 for storing road map data, a controller 105 for controlling the head-up display 110 and the CRT 120. Including and

Here, the controller 105 included in the navigation device main body 100 sends route guidance information for the vehicle to the head-up display 110 and the CRT 120 based on signals from the position detection device 101 and the road map memory 103. Output. CRT1
On 20, a road map is mainly displayed. The following information (1) or (2) is displayed on the head-up display 110.

(1) Information indicating vehicle state For example, vehicle speed (corresponding to speedometer), engine speed (corresponding to tachometer), remaining amount of gasoline, water temperature, state of lights, and various warnings (half). It is a door, seat belt is not installed, oil condition, tire puncture information, battery warning, etc.) (2) Navigation information required for driving For example, intersection guidance, traveling direction, direction indicating north , The distance traveled to the destination, the direction of the destination, GPS information, the altitude of the vehicle, and the time (corresponding to a clock) That is, in the embodiment of the present invention, the driver is directly required to drive the vehicle. Information is displayed on the head-up display 110, and additional information is displayed on the CRT1.
20 is displayed. Thus, the driver can obtain only the information necessary for driving the vehicle by looking at the head-up display 110 while driving the vehicle.

As described above, the head-up display 110 is mounted on the dashboard of the vehicle and displays on the semi-transmissive reflection plate based on the route guidance information. Does not require frequent eye movements, improving usability.

Further, a television tuner is provided in the navigation body 100, and a CRT can be selected by the user to switch.
By sending the image signal from the TV tuner to 120, the user can watch the TV broadcast even when the navigation device is in use.

Further, since only the information necessary for driving is displayed on the head-up display 110, the driver can obtain only the information necessary for driving, and the information not directly necessary for driving. Do not be confused by.

Further, the CRT 120 can be mounted at a position apart from the head-up display 110 mounted on the dashboard, for example, near the speedometer.

Further, in the present embodiment, the head-up display 110 has been described by taking the one shown in FIG. 1 or 5 as an example. However, any head-up display can be used and the usability is improved. Can be improved. It should be noted that instead of the head-up display 110, another display device, for example, a small display, an LED, or the like can be used.

[0082]

In the vehicle head-up display according to the first aspect, predetermined graphic display light is emitted based on the route guidance information, and the emitted graphic display light is reflected by two or less reflectors. Part of the reflected graphic display light is reflected to the driver by the semi-transmissive reflector, and the head-up display is attached to the vehicle. Therefore, use a concave reflector as a small reflector. Since the number of head-up displays for vehicles is very small, the entire head-up display for vehicles can be downsized and the cost can be reduced.

In the vehicle head-up display according to claim 2, route guidance information is received in the vehicle head-up display according to claim 1, and the graphic display light of the light source is controlled based on the received route guidance information. Therefore, it becomes possible to receive the route guidance information and control the display of the route guidance information.

According to the vehicle head-up display of the third aspect, in the vehicle head-up display of the first or second aspect, the reflection angle of the reflector is adjusted, so that even if the vehicle type or arrangement changes, the driver's It is possible to adjust so that the graphic display light is reflected according to the posture.

In the vehicle head-up display according to claim 4, in the vehicle head-up display according to claim 3, since the adjusting means can be remotely controlled, the driver can easily reflect while sitting in the driver's seat. It is possible to adjust the reflection angle of the plate.

As a result, a head-up display for a vehicle which can be easily mounted afterwards so as not to hinder driving, that is, which can be "retrofitted", to a vehicle whose mounting location is not designed in advance is provided. Can be provided.

The vehicle head-up display according to claim 5 is the vehicle head-up display according to any one of claims 1 to 4, wherein the light source includes a fluorescent display tube or a high-intensity light-emitting diode. It is possible to obtain a graphic display with sufficient brightness even when the sun is illuminated.

A vehicle head-up display according to a sixth aspect is the vehicle head-up display according to any one of the first to fifth aspects, wherein the back surface of the semi-transparent reflecting plate is non-reflective coating or stepped. Therefore, it is possible to prevent duplication of graphic display due to reflection on the back surface of the reflector. This also reduces the reflection of the head-up display on the windshield.

In the vehicle head-up display according to claim 7, in the vehicle head-up display according to any one of claims 1 to 6, the brightness of the light source is adjusted based on the light intensity of the external light. It is possible to reduce the brightness of the light source at night, which is unlike the daytime, when the brightness is not so high.

As a result, it is possible to provide a vehicle head-up display that can be retrofitted to various vehicles and is easy to use.

In the navigation device according to the eighth aspect, since the route guidance information is output to each of the head-up display and the display device, the usability of the navigation device can be improved.

In addition to the effect of the navigation device according to the eighth aspect, the navigation device according to the ninth aspect includes the road map memory and the position detecting means, so that the efficiency of data processing is improved.

In the navigation device according to the tenth aspect, in addition to the effects of the navigation device according to the eighth or ninth aspect, a road map is displayed on the display means, and information indicating the state of the vehicle is displayed on the head-up display. Therefore, the usability is further improved.

According to the eleventh aspect of the present invention, in addition to the effect of the eighth or ninth aspect of the navigation apparatus, a road map is displayed on the display means and navigation information necessary for driving is displayed on the head-up display. Therefore, the usability is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an internal structure of a vehicle HUD 1 according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an internal structure of a vehicle HUD 1 according to the first embodiment of the present invention, (a) is a plan view and (b) is a side view.

FIG. 3 is an example in which the second reflecting mirror 3 of the HUD 1 according to the first embodiment of the present invention is processed to prevent image duplication, and FIG. 3A is a view showing a non-reflective coating. And (b) is a diagram showing a back surface having a plane different in angle from the front surface (for example, step processing).

FIG. 4 is a VFD of the vehicle HUD 1 according to the embodiment of the present invention.
It is a figure which shows the example of the display content of 6.

FIG. 5 is a diagram showing a display body 2 ′ of a vehicle HUD according to a second embodiment of the present invention.

FIG. 6 is a block diagram of a navigation device according to a third embodiment of the present invention.

FIG. 7 is a windshield 3 in a conventional vehicle HUD.
It is a figure at the time of giving direct processing to 1 and using it as a combiner.

[Explanation of symbols]

 1 Vehicle Head-Up Display (HUD) 2 Display Main Body 3 Second Reflector 4 Left / Right Support 5 Universal Arm 6 VFD 8 1st Reflector 9 Drive 10 Control 11 Connector 12 Optical Sensor 13 Microcomputer 14 Electronic Circuit Board 15 DC Motor 16 Gear 20 Third Reflector 41 Display Surface of VFD 6 43 Remaining Distance Display to Crossing Point 45 Progress 16 Direction and Crossing Point Shape Display 47 Obstacle Approach Warning Display 49 Remaining Distance Display to Obstacle 100 Navigation Device Main Body 101 position detection device 103 road map memory 105 controller 110 head-up display 120 CRT (display device)

Claims (11)

[Claims] 1. A head-up display for a vehicle, which receives and displays route guidance information from the outside, wherein the light source emits predetermined graphic display light based on the route guidance information, and the emitted graphic display. Two or less reflectors that reflect light; a semitransparent reflector that reflects a part of the reflected graphic display light to the driver; and at least one of the reflectors is a concave surface, A vehicle head-up display including a mounting means for mounting the head-up display on the vehicle. 2. The transmission line connecting means for receiving the route guidance information, and the display control means for controlling the graphic display light of the light source based on the received route guidance information. Head-up display for vehicles. 3. The vehicle head-up display according to claim 1, further comprising adjusting means for adjusting a reflection angle of the reflection plate. 4. The vehicle head-up display according to claim 3, wherein the adjusting means can be remotely controlled. 5. The vehicle head-up display according to claim 1, wherein the light source includes a fluorescent display tube or a high-luminance light emitting diode. 6. The head-up display for a vehicle according to claim 1, wherein the semi-transmissive reflector has a non-reflective coating or anti-reflective coating on its back surface. 7. The head-up display is exposed to external light from the outside, and the head-up display includes adjusting means for adjusting the brightness of the light source based on the light intensity of the external light. The vehicle head-up display described. 8. The head-up display according to claim 1, display means for inputting route guidance information and performing display based on the inputted route guidance information, said head-up display and said A navigation device, comprising: route guidance information output means for outputting route guidance information to each of the display means. 9. The route guidance information output means includes: a road map memory for storing road map data; and a position detection means for detecting a position of a vehicle.
Navigation device according to. 10. The navigation device according to claim 8, wherein the display unit displays a road map, and the head-up display displays information indicating a vehicle state. 11. The navigation device according to claim 8, wherein the display unit displays a road map, and the head-up display displays navigation information necessary for driving.