JPH0811580A - Head-up display device - Google Patents

Abstract

PURPOSE:To unite a head-up display device for facilitating the mounting thereof on a vehicle. CONSTITUTION:A head-up display device for a vehicle is composed of a fixed side case 3 mounted on the proximity of a dash board 2, a body case 4 pivotable on a horizontal surface about a shaft part 3a of the fixed side case 3, a display 5 mounted in the body case 4, control means 6 mounted in the body case 4, a reflecting member 7 mounted in the body case 4 and a collapsible flat plate- like combiner 8 mounted on the upper part of the body case 4. A cover 4c is provided with a douser 4d so that the display 5 does not enter the field of view of an occupant. The combiner 8 can be adjusted with respect to the erecting angle by a force of holders 10, 10 pinching, at many points, shaft parts 9b, 9b of a holder 9. A reflection type hologram 13 photographed by an aspheric concave lens is enclosed in the combiner 8 the surface of which is coated with a nonreflective coat.

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 device.

[0002]

2. Description of the Related Art Conventionally, a vehicle head-up display device for displaying vehicle speed, etc., has a display unit 100 incorporating a display 5 and a reflecting mirror (optical path) 7 as shown in FIG. 2 is installed inside the display 2, and the display image 17 displayed by the display 5 is displayed on the windshield 20.
A combiner (reflecting member) 8 for forming an image in front of 0 is vapor-deposited on the inner surface of the windshield 200.

[0003]

However, in the conventional vehicle head-up display device, the display unit 100 and the combiner 8 are separate bodies as described above, and they are arranged in the vehicle as described above. In mounting the vehicle head-up display device on the vehicle, there is a problem that it is not easy to mount on the vehicle because of relatively large-scale modification of the vehicle and high system cost.

Therefore, the head-up display device according to the present invention is not limited to the head-up display device for a vehicle, but it is mainly intended to solve the above problems and facilitate the mounting on a vehicle. To aim.

[0005]

According to a first aspect of the present invention, there is provided a display device for receiving an electric signal, forming a display image which changes according to the electric signal, and projecting the display image to the outside. The display member reflected by the reflection member and the display image reflected by the reflection member are projected, and the display image is reflected outward in the direction of the eyes of the occupant to make the display image forward and outward. A head-up display device is adopted, which comprises a combiner for forming an image, a main body case in which the display and the reflection member are arranged, and the combiner is assembled.

According to a second aspect of the present invention, the display device includes a liquid crystal element that forms the display image and a light source that illuminates the liquid crystal element with illumination light, and the light passing through the liquid crystal element is projected to the outside. The head-up display device according to claim 1, which is illuminated.

According to a third aspect of the present invention, the printed board on which the light source is disposed has a reflecting surface formed on the liquid crystal element side for reflecting the light emitted from the light source to the liquid crystal element side. The head-up display device according to claim 2 is adopted.

In a fourth aspect, the head-up display device according to the third aspect is adopted, wherein the reflecting surface is formed by white printing.

In a fifth aspect of the present invention, the head-up display according to any one of the first to fourth aspects is characterized in that the main body case is rotatably supported and a fixed side case having a mounting surface for a vehicle is provided. Adopt equipment.

According to a sixth aspect of the present invention, there is provided the head-up display device according to any one of the first to fifth aspects, wherein the main body case is installed near a dashboard or a rear tray of a vehicle.

According to a seventh aspect of the present invention, there is adopted the head-up display device according to the fifth or sixth aspect, wherein the main body case is formed in a flat shape in a mounting surface direction of the fixed side case.

According to an eighth aspect, the head-up display device according to any one of the first to seventh aspects is adopted, wherein the combiner is a retractable type in relation to the main body case.

According to a ninth aspect of the present invention, the combiner is attached to the main body case so that the standing angle can be adjusted,
9. The head-up display device according to claim 8, wherein the vertical position of the image forming position of the display image can be adjusted by adjusting the standing angle of the combiner.

According to a tenth aspect of the invention, the head-up display device according to any one of the first to ninth aspects is adopted, wherein the combiner has a reflection hologram enclosed therein.

In the eleventh aspect, the head-up display device according to the tenth aspect is adopted, wherein the reflection type hologram has an aspherical concave lens photographed.

According to a twelfth aspect, the head-up display device according to any one of the first to eleventh aspects is adopted, wherein at least one surface of the combiner is coated with a non-reflective coating.

In a thirteenth aspect of the present invention, the head according to any one of the first to twelfth aspects is characterized in that the main body case is provided with a light receiving sensor and a control means for performing automatic light control according to ambient brightness. Adopt up-display device.

In the fourteenth aspect of the present invention, there is provided the head-up display device according to any one of the fifth to thirteenth aspects, wherein a concave portion is provided on the surface of the main body case opposite to the fixed side case. To do.

According to a fifteenth aspect of the present invention, a display device for receiving a vehicle signal corresponding to a vehicle condition, forming a display image that changes according to the vehicle signal, and projecting the display image to the outside, and the display device. A reflecting member that reflects the projected display image,
A display image reflected by the reflection member is projected, and a combiner for forming the display image forward and outward by reflecting the display image in the direction of the occupant's eyes and making the display image inside the reflection member is provided inside. And a main body case to which the combiner is assembled.

According to a sixteenth aspect of the present invention, there is provided a liquid crystal display which has a liquid crystal element for switching display contents according to a vehicle condition and a light source for illuminating the liquid crystal element with illumination light, and radiates transmitted light passing through the liquid crystal element to the outside. And a reflecting member that reflects the transmitted light from the liquid crystal display, and the transmitted light reflected by the reflecting member is projected, the transmitted light is reflected in the direction of the occupant's eyes, and the transmitted light is transmitted to the occupant's eyes. A combiner that forms the display image outward and forward by making light incident, and the liquid crystal display and the reflector are arranged inside,
A head-up display device is used, which comprises a main body case to which the combiner is assembled.

According to a seventeenth aspect of the present invention, a liquid crystal display that forms a display image that changes according to vehicle conditions, a light source that irradiates the liquid crystal display with a light beam, and a reflecting member that reflects the transmitted light that has passed through the liquid crystal display. And a transmitted light reflected by the reflection member is projected, the transmitted light is reflected in the direction of the eyes of the occupant, and the transmitted light is incident on the eyes of the occupant to form the display image on the outer front side. And a liquid crystal display, the reflection member, and the light source, and a main body case to which the combiner is assembled, the head-up display device is adopted.

[0022]

According to the head-up display device of the first aspect, the display and the reflecting member are built in the main body case, and the combiner is assembled to the main body case. Therefore, the device can be integrated.

Similarly, according to the head-up display device according to the fifteenth to seventeenth aspects, the head-up display device for a vehicle can be integrated so that it can be easily mounted on a vehicle.

A head-up display device according to a second aspect of the present invention is a device in which a display device is configured by a combination of a liquid crystal element and a light source.

According to the head-up display device of the third aspect, the reflecting surface has a function of reflecting a part of the light emitted from the light source and making the light incident on the liquid crystal element.
Compared with the case where no reflecting surface is provided, the amount of light irradiated to the liquid crystal element increases, and the display brightness of the liquid crystal element increases.

According to the head-up display device of the fourth aspect, since the reflecting surface is formed by performing white printing on the printed board, a reflector (light reflecting board) is separately provided to increase the amount of light emitted to the liquid crystal element. The structure can be simplified and the cost can be reduced as compared with the case of providing the above.

According to the head-up display device of the fifth aspect, since the main body case is rotatably supported by the fixed side case attached to the vehicle, the position of the main body case with respect to the vehicle can be adjusted, and the versatility is improved. Excel.

According to the head-up display device of the sixth aspect, when the main body case is installed in the vicinity of the dashboard of the vehicle, it can be used as a head-up display device for displaying the speed of the vehicle.
Further, when the main body case is installed in the vicinity of the rear tray of the vehicle, it can be used as a display device (for example, a high mount stop lamp) that displays a brake lamp or the like for an occupant of the vehicle behind the vehicle.

According to the head-up display device of the seventh aspect, since the main body case is formed in a flat shape in the mounting surface direction of the fixed side case, when the device is mounted on the mounting surface of the vehicle, the mounting surface of the vehicle is fixed. There is little protrusion from the surface, so that the design of the vehicle is not impaired and the visibility of the occupant is not hindered.

According to the head-up display device of the eighth aspect, since the combiner is foldable in relation to the main body case, the combiner is laid down by retracting the combiner to the main body case side when not in use to make the device compact. Can be realized.

According to the head-up display device of the ninth aspect, since the image forming position can be adjusted up and down by adjusting the standing angle of the combiner, not only a specific occupant but also an unspecified occupant having a different eye range (viewing angle). Can be used as a head-up display device.

According to the head-up display device of the tenth aspect, since the thin sheet-shaped hologram is enclosed in the combiner, the reflection efficiency of a specific wavelength can be improved.

According to the head-up display device of the eleventh aspect, since the aspherical concave lens is photographed in the hologram, it is possible to magnify the display image formed on the outer front side.

According to the twelfth aspect of the head-up display device, the non-reflective coating reduces undesired reflection on the combiner surface, and makes it possible to form a sharp display image that is not a double image.

According to the head-up display device of the thirteenth aspect, since automatic light control is performed according to the amount of light received by the light receiving sensor, the visibility can be improved by adjusting the brightness according to the brightness of the surroundings.

According to the head-up display device of the fourteenth aspect, by placing an object in the recess, it can be used as a tray.

[0037]

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

FIG. 1 is an overall configuration diagram of a vehicle head-up display device according to the first embodiment, FIG. 2 is a perspective view for explaining a connecting structure of a main body case and a combiner, and FIG. 3 is a combiner. 4 is a perspective view showing a mounting state of the light source, and FIG. 5 is a side view showing a path of light emitted from the light source.

In FIG. 1, a head-up display device 1 for a vehicle is rotated on a horizontal plane around a fixed case 3 attached to a dashboard 2 of an instrument panel and a shaft portion 3a of the fixed case 3. A possible body case 4, an indicator 5 mounted inside the body case 4, a control means 6 mounted inside the body case 4, a reflecting member (reflecting mirror) 7 mounted inside the body case 4, It is composed of a foldable flat plate combiner 8 attached to the upper part of the main body case 4.

The body case 4 is the shaft portion 3 of the fixed side case 3.
It has a substrate 4a rotatably fixed to a and a cover 4c having an opening 4b. The cover 4c is provided with a light shielding plate 4d so that the display device 5 does not enter the visual field of the occupant.

The display 5 has a lamp (light source) 5a, an optical lens 5b, and a liquid crystal element 5c mounted inside a case 5d, and the case 5d is mounted on a substrate 4a of the body case 4. The lamp 5a is arranged on the printed board 5e, as shown in FIGS. Printed board 5e
On the liquid crystal element 5c side, a reflective surface 5f for reflecting the light emitted from the lamp 5a to the liquid crystal element 5c side is formed by white printing.

The control means 6 is mounted on the substrate 4a of the main body case 4.

The reflecting member 7 faces the display 5 and
The display unit 5 is attached to the substrate 4a of the main body case 4 at a predetermined inclination angle so that the display image of the display unit 5 can be guided to the surface of the combiner 8 through the opening 4b of the cover 4c.

As shown in FIG. 2, the combiner 8 has a long groove 9a extending in the left-right direction and a shaft portion 9 formed at both left and right ends.
b and 9b, the holder 9 is press-fitted and fixed in the long groove 9a, the shaft holders 9 and 9b are fitted with the holders 10 and 10, respectively, and the locking legs of the holders 10 and 10 are fixed. The parts 10a, 10a are respectively locked in the locking holes 4e, 4e of the body case 4, so that the body case 4
On the other hand, as shown by the solid line in FIG.
It is attached so that it can be stored as shown by the two-dot chain line in the figure. During this storage, the opening 4b of the cover 4c is covered with the combiner 8. In the combiner 8, the other holders 10 and 10 have the holder 9
As shown by α and β in FIG. 1, the standing angle can be adjusted by the force that holds the shaft portions 9b and 9b at multiple points.

Further, as shown in FIG. 3, the combiner 8 includes the reflection hologram 1 between the glass 11 and the glass 12.
3 is enclosed, and the surfaces of the glasses 12 and 14 are coated with antireflection coatings 15 and 16. An aspherical concave lens is photographed on the reflection hologram 13.

The head-up display device 1 for a vehicle configured as described above is used with the combiner 8 standing up from the stored state. In this use, the light emitted from the lamp 5a passes through the optical lens 5b and is emitted from the display device 5 as a display image of the display device 5 according to the image pattern drawn by the liquid crystal element 5c controlled by the control means 6, and the reflecting member. The reflection hologram 1 of the combiner 8 is reflected by 7 and passes through the opening 4b of the cover 4c to enter the combiner 8.
The image is magnified several times by the aspherical concave lens taken in No. 3 and displayed as a virtual display image 17 in front of the combiner 8. In this way, the display image 17 is magnified several times by the aspherical concave lens, so that the large display image 17 can be displayed with a short optical path, and the device 1 can be integrated (unitized). It was Further, since the combiner 8 is provided with the non-reflective coatings 15 and 16, the incident light to the combiner 8 is less likely to be reflected on the front and back surfaces of the glasses 12 and 14, and the incident light is a hologram. Since it is reflected by 13, the display image 17 becomes sharp without forming a double image.

When the main body case 4 is used, the main body case 4 is rotated with respect to the fixed side case 3 about the shaft portion 3a by a proper angle on a horizontal plane to adjust the display position of the display image 17 in the left-right direction. be able to. Further, by rotating the combiner 8 about the shaft portions 9b, 9b of the holder 9 by an appropriate angle to adjust the standing angle of the combiner 8, the display position of the display image 17 in the vertical direction can be adjusted. it can. Therefore, the 99% eye range can be satisfied.

By constructing the combiner 8 with the hologram combiner 8 encapsulated with resin, the combiner 8 and the holder 9 can be integrated, and the cost can be reduced and the safety of passengers can be improved by reducing the number of parts. it can. Further, instead of the liquid crystal element 5c, a fluorescent display tube (VF
D) or the like may be used.

As described above, in the vehicle head-up display device 1 of this embodiment, the display 5 and the reflecting member 7 are arranged inside the main body case 4, and the combiner 8 is assembled to the main body case 4. Therefore, the device can be integrated and can be easily mounted on the vehicle.

Further, since the reflecting surface 5f has an effect of reflecting a part of the light emitted from the light source 5a and making it enter the liquid crystal element 5c, the liquid crystal element 5c is different from the case where the reflecting surface 5f is not provided. The amount of irradiation light for the liquid crystal element 5c increases, and the display brightness of the liquid crystal element 5c increases.

Further, since the reflecting surface 5f is formed by printing the printed board 5e in white, compared to the case where a reflector (light reflecting plate) is separately provided in order to increase the irradiation light amount to the liquid crystal element 5c. Can be simplified and the cost can be reduced.

Further, since the main body case 4 is rotatably supported by the fixed side case 3 attached to the vehicle,
Since the position of the main body case 4 with respect to the vehicle can be adjusted, the versatility is excellent.

Further, since the main body case 4 is formed in a flat shape in the mounting surface 3b direction of the fixed side case 3, when the device 1 is mounted on the mounting surface 2a of the vehicle, the protrusion from the vehicle mounting surface 2a. Therefore, the design of the vehicle is not impaired, and the visibility of the occupant is not hindered.

Since the combiner 8 is foldable in relation to the body case 4, the combiner 8 is not in use.
The device 1 can be made compact by tilting the to the main body case 4 side to bring it into a stored state.

Further, since the image forming position can be adjusted up and down by adjusting the standing angle of the combiner 8, it is used as a head-up display device for not only a specific occupant but also an unspecified occupant having a different eye range (viewing angle). be able to.

Further, since the thin sheet-shaped hologram 13 is enclosed in the combiner 8, the reflection efficiency at a specific wavelength can be improved.

Further, since the aspherical concave lens is photographed on the hologram 13, the display image 1 formed on the outer front side is formed.
7 can be enlarged.

Further, the non-reflective coatings 15 and 16 reduce undesired reflection on the surface of the combiner 8, and it becomes possible to form a sharp display image 17 which is not a double image.

6 and 7 show the structure of a vehicle head-up display device according to the second embodiment.
The vehicle head-up display device 1 according to the second embodiment is the same as the vehicle head-up display device 1 according to the first embodiment, except that the light receiving sensor 18 is provided in the body case 4.
Also, a light control volume 19 is provided, and the control means 6 is configured to perform automatic light control and manual light control. The other reference numerals in the figure represent the same reference numerals as in the first embodiment.

According to the second embodiment having such a configuration, automatic light adjustment is performed according to the amount of light received by the light receiving sensor 18, so that the visibility can be improved by adjusting the brightness according to the brightness of the surroundings. And the crew volume 19
Since the dimming is performed by operating the, the brightness can be adjusted by the occupant's intention.

FIG. 8 shows the structure of a vehicle head-up display device according to the third embodiment. This third
The vehicle head-up display device 1 of the embodiment is
In the vehicle head-up display device 1 of the first embodiment, the recesses 4f and 8a are formed on the upper surface of the cover 4c of the main body case 4 and the back surface of the combiner 8, respectively.
It is characterized in that an object can be placed in these recesses 4f, 8a.

FIG. 9 shows a use state of the head-up display device 1 for a vehicle according to the fourth embodiment which is arranged on the rear tray 300 of the vehicle and performs a display to the rear of the vehicle. Head-up display device 1 for this vehicle
In the vehicle head-up display device 1 of the first embodiment, the red display body is transferred to the hologram of the combiner 8 and the combiner 8 is irradiated with light using the same unit as in the first embodiment. As a result, the red stereoscopic display image 17 emerging from the combiner 8 is displayed and used as a high mount stop lamp.

In FIG. 11, the lamp 5 is provided in the case 5d.
A hole 5g is formed on the upper surface facing the hole a, and the fillet 2 is provided on the main body case 4 facing the hole 5g.
0 and fillet cover 21 are provided.

When the lamp 5a is turned on, the lamp 5a generates heat, and if this heat is sealed in the case 5d of the display unit 5, it is necessary to use a highly heat-resistant material for the case 5d or the printed board 5e. Although a problem may occur, as described above, if the hole 5g fillet 20 and the fillet cover 21 are formed, the heat of the lamp 5a can be radiated to the outside of the case 5d by the hole 5g. The cover 21 allows heat to be released to the outside of the case body.

As a result, the case 5d or the like is deformed by the heat generation of the lamp 5a, and it is not necessary to use a high heat-resistant material so that the deformation does not occur.

[Brief description of drawings]

FIG. 1 is a side sectional view of a head-up display device for a vehicle according to a first embodiment.

FIG. 2 is an exploded perspective view showing a connecting structure of the combiner and the main body case.

FIG. 3 is a sectional view of the combiner.

FIG. 4 is a perspective view showing a mounted state of a light source.

FIG. 5 is a side view showing a path of light emitted from a light source.

FIG. 6 is a side view of a head-up display device for a vehicle according to a second embodiment.

FIG. 7 is an electric circuit diagram thereof.

FIG. 8 is a side sectional view of a head-up display device for a vehicle according to a third embodiment.

FIG. 9 is a view showing a mode of use of the vehicle head-up display device according to the fourth embodiment.

FIG. 10 is a configuration diagram of a conventional head-up display device for a vehicle.

FIG. 11 is a configuration diagram of a vehicle head-up display device according to another embodiment.

[Explanation of symbols]

 1 Head-up display device 2 Dashboard 3 Fixed side case 3b Mounting surface 4 Main body case 4d Light-shielding plate 4f Recessed portion 5 Display 5a Lamp (light source) 5c Liquid crystal element 5e Printed board 5f Reflective surface 6 Control means 7 Reflective member 8 Combiner 8a Recessed portion 13 Hologram 15,16 Non-reflective coating 18 Light receiving sensor

Claims (17)

[Claims] 1. A display device that receives an electric signal, forms a display image that changes according to the electric signal, and projects the display image to the outside, and the display image that is projected from the display device. A reflecting member that reflects the light; a display image that is reflected by the reflecting member; and a combiner that projects the display image toward the outside front by reflecting the display image in the direction of the eyes of the occupant and allowing the display image to enter. And a body case in which the reflecting member is disposed inside and the combiner is assembled, the head-up display device. 2. The display device includes a liquid crystal element that forms the display image and a light source that illuminates the liquid crystal element with illumination light, and the light passing through the liquid crystal element is projected to the outside. The head-up display device according to claim 1, wherein the head-up display device is a display device. 3. A reflective surface for reflecting light emitted from the light source to the liquid crystal element side is formed on the liquid crystal element side of the printed board on which the light source is disposed. 2. The head-up display device according to item 2. 4. The head-up display device according to claim 3, wherein the reflective surface is formed by white printing. 5. The head-up display device according to claim 1, further comprising a fixed case that rotatably supports the main body case and has a mounting surface for mounting on a vehicle. 6. The head-up display device according to claim 1, wherein the main body case is installed near a dashboard or a rear tray of a vehicle. 7. The head-up display device according to claim 5, wherein the main body case is formed in a flat shape in a mounting surface direction of the fixed side case. 8. The combiner is foldable in relation to the body case.
7. The head-up display device according to any one of 7. 9. The combiner is attached to the main body case so that an upright angle can be adjusted, and vertical adjustment of an image forming position of the display image can be performed by adjusting the upright angle of the combiner. 8. The head-up display device according to item 8. 10. The head-up display device according to claim 1, wherein the combiner encloses a reflection hologram. 11. The head-up display device according to claim 10, wherein an aspherical concave lens is photographed in the reflective hologram. 12. The head-up display device according to claim 1, wherein at least one surface of the combiner is coated with a non-reflective coating. 13. The head-up display device according to claim 1, wherein the main body case is provided with a light receiving sensor and control means for performing automatic light control according to ambient brightness. . 14. The head-up display device according to claim 5, wherein a concave portion is provided on a surface of the main body case opposite to the fixed side case. 15. A display device which receives a vehicle signal corresponding to a vehicle condition, forms a display image which changes according to the vehicle signal, and projects the display image to the outside, and a display device which emits light from the display device. A reflecting member for reflecting the display image and a display image reflected by the reflecting member, and a combiner for projecting the display image outward and forward by reflecting and displaying the display image in the eye direction of the occupant. And a main body case in which the display and the reflection member are arranged inside and the combiner is assembled. 16. A liquid crystal display having a liquid crystal element for switching display contents depending on a vehicle condition and a light source for irradiating the liquid crystal element with illumination light, and radiating transmitted light passing through the liquid crystal element to the outside. A reflective member that reflects the transmitted light from the liquid crystal display, and the transmitted light reflected by the reflective member is projected, the transmitted light is reflected in the direction of the occupant's eyes, and the transmitted light enters the occupant's eyes. A head-up display, comprising: a combiner for forming the display image outward and forward by making the liquid crystal display and the reflector plate inside, and a main body case to which the combiner is assembled. apparatus. 17. A liquid crystal display that forms a display image that changes according to vehicle conditions, a light source that irradiates the liquid crystal display with a light beam, a reflection member that reflects the transmitted light that has passed through the liquid crystal display, The transmitted light reflected by the reflecting member is projected, the transmitted light is reflected in the direction of the eyes of the occupant, and the combiner forms the display image forward and outward by making the transmitted light enter the eyes of the occupant, A head-up display device comprising: a liquid crystal display, the reflecting member, and the light source, and a main body case to which the combiner is assembled.