JPH04104680U - Vehicle head-up display - Google Patents

Abstract

(57) [Summary] [Purpose] Achieve miniaturization while ensuring good visibility. [Structure] A combiner 9 provided as a part of a windshield 8 is disposed in front of the instrument panel 6, and an information projecting device 10 is disposed on the instrument panel 6. The light emitting display surface 14 of the CRT 12 serving as an information display section is divided into a plurality of areas (only the first and fourth areas A1 and A4 are shown in FIG. 1), and information is displayed in each area. Lenses 22 as optical members are arranged corresponding to each region. The information display light for each area can be projected onto the combiner 9 by the corresponding lenses 22, respectively. Therefore, even if the lens 22 with a relatively large curvature is used, each information display light can be projected at the center of the lens where the distortion of the projected image is small. On the other hand, if the curvature of the lens 22 is increased, the CRT
The distance between the 12 light emitting display surfaces 14 and the lens 22 can be shortened.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention displays various information superimposed on the scenery of the outside world in front of the vehicle operator. The present invention relates to a head-up display for a vehicle.

0002

[Conventional technology]

Conventionally, this type of head-up display for vehicles has been approved by Utility Application No. 1-114. There is No. 355. This head-up display for vehicles provides speed information and brake information. Pressure information and the like are displayed on a light-emitting display surface such as a CRT, which is an information display section. And the luminous table The information display light from the screen is projected onto the combiner via a lens of the light projecting section. So The information display light is then superimposed on the external scenery in front of the vehicle using a combiner. This allows vehicle operators to see necessary information within their front field of vision. It is something.

0003

[Problem that the idea aims to solve]

However, with conventional systems, when there is a lot of information that the pilot wants to visually check, In order to cover all the information display light from the information display screen, increase the aperture of the lens. There was a need. Furthermore, the information display light projected through the large-diameter lens In order to make the image suitable for pilot viewing, the distance between the information display surface and the lens must be adjusted. It was necessary to take quite a long time.

0004 This is because in order to reduce the distance between the information display surface and the lens, the curvature of the lens must be increased. However, if the curvature is increased, the focal length must be shortened. The image is distorted by the information display light that passes near the periphery of the lens, causing the operator to This is because information cannot be visually recognized.

[0005] Therefore, the curvature of the lens cannot be made too large, and as a result, the focal point of the lens The point distance becomes longer, and the distance between the information display surface and the lens must be longer. , the equipment had become larger.

[0006] Therefore, the purpose of this invention is to solve the above problems, and to ensure good visibility. Our goal is to provide a head-up display for vehicles that is small and compact. Ru.

[0007]

[Means to solve the problem]

In order to achieve this purpose, this invention has the following configuration as a means to solve the problem. I took it. That is, an information display section having a light-emitting display surface capable of displaying a plurality of pieces of information; an information projecting device having a light projecting section that projects the information display light in a predetermined direction; The information display transmits light from the outside world and is emitted from the light emitting unit. Head-up for vehicles equipped with a combiner that reflects or diffracts light in a predetermined direction In the display, The light projecting section corresponds to each region of the information display surface divided into a plurality of regions. the information display light for each region, and the information display light for each region is A head-up display for a vehicle characterized by being configured to be able to project light using a component. This is the structure of the play.

[0008]

[Effect]

The vehicle head-up display of the present invention having the above-mentioned configuration can be used in multiple areas. The information display light for each area of the divided information display surface is transmitted to the corresponding optical member. emits light in a predetermined direction. Then, the combiner transmits the light rays from the outside world. First, the information display light projected from each optical member is reflected or diffracted in a predetermined direction.

[0009] Therefore, for example, when using lenses as optical members, each lens has a corresponding It is only necessary to emit information display light in the area to be displayed, and use one with a small aperture. I can do it. Therefore, even if the curvature of each lens is increased, the distortion of the projected image is small. The central part of each lens is configured to project information display light for each area. can be achieved. As a result, an image that does not hinder visibility as a whole can be obtained. This allows the distance between the information display surface and each lens to be shortened.

0010

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. Figure 1 shows a schematic configuration of a head-up display for a vehicle, which is an embodiment of the present invention. It is a diagram. In FIG. 1, the cockpit of the railway vehicle includes a seat for the pilot (not shown). An instrument panel 6 is arranged in front of the instrument panel 6, and a windshield 8 is arranged in front of the instrument panel 6. It is arranged so that it slopes downward as it goes forward.

[0011] A half mirror surface is formed by depositing a metal film on the inside of the windshield 8. The part with this metal film interposed therein is the combiner 9. In addition, the above money If it functions as a combiner 9, it is possible to use only glass, for example. It doesn't matter if you do it.

0012 In this embodiment, the metal coating is not applied to the entire surface of the windshield 8 but to the combiner 9. It is provided only in the areas where all functions are required. In addition, in this example, the front A part of the glass 8 also serves as a combiner 9, but it is separate from the windshield 8. A combiner 9 may also be provided.

[0013] An information projecting device 10 is disposed on the instrument panel 6, and this information projecting device 10 , a CRT (Cathode Ray Tube) 12 as an information display unit, and a CRT (Cathode Ray Tube) 12 as will be described later. Equipped with a light projector.

[0014] The light emitting display surface 14 of the CRT 12 is composed of a large number of pixels, and each pixel has a different color. By controlling the light and brightness, multiple information such as speed information and brake pressure information can be displayed. information can be displayed all at once.

[0015] In this embodiment, as shown by the two-dot chain line in FIG. Assuming that it is divided into equal parts, each area has circular first to sixth areas A1 to A6 shown by solid lines. It is set as the display area for control. The set first to sixth areas A1 to Information is displayed only within A6.

[0016] On the other hand, a positioning frame 16 is attached to the CRT 12 so as to cover the light emitting display surface 14. I'm being kicked. Then, the above-mentioned first to sixth areas A1 to A6 of the positioning frame 16 A through hole 18 is formed in each portion located above.

[0017] Further, optical member units 20 corresponding to each of the first to sixth areas A1 to A6 are provided. A part of each optical member unit 20 is inserted into each through hole 18 and attached to the positioning frame 16. Retained.

[0018] Each optical member unit 20 includes a lens 22 as an optical member, and includes the first lens 22 as an optical member. - Correspond to the first to sixth information display lights L1 to L6 from the sixth areas A1 to A6, respectively. The lens 22 is arranged so that light can be projected onto the combiner 9.

[0019] At this time, by adjusting the direction of each lens 22, the first to sixth light beams are projected. The information display lights L1 to L6 are projected in such a way that they each form an image at a predetermined position. The direction can be set. The above-mentioned positioning frame 16 and each optical member unit 2 0 constitutes a light projecting section.

[0020] The combiner 9 and the information projecting device 10 having the above-described structure are connected to the combiner 9 from the outside world. A part of the external light G that is directed toward the outside is reflected back to the outside world, and the rest is transmitted as is. , a part of the information display light projected from the lens 22 is transmitted, and the remaining part is transmitted to the operator P. The arrangement angle of the combiner 9 and the projection angle of the information projection device 10 so that the information can be reflected toward The degree etc. are set.

[0021] Next, the operation of the vehicle head-up display of this embodiment will be explained. The combiner 9 converts a part of the external light G directed toward the combiner 9 from the outside world into the outside world. The remaining part is transmitted to the operator P.

[0022] On the other hand, in the first to sixth areas A1 to A6 of the light emitting display surface 14 of the CRT 12, information will be displayed. Then, the first to sixth information display lights L1 to L6 containing information are , the lenses 22 of the corresponding optical member units 20 are directed toward the combiner 9. and emits light. The combiner 9 is configured for each of the first to sixth information display lights L1 to L6. Then, a part of it is transmitted to the outside world as it is, and the rest is reflected and reaches the pilot P. .

[0023] Therefore, by adjusting the brightness of the first to sixth information display lights L1 to L6, the control The person P can visually recognize the first to sixth information display lights L1 to L6, and the first to sixth information display lights L1 to L6. ~Visually recognize the external light G passing through the part where the sixth information display lights L1 to L6 are not present can be done.

[0024] FIG. 3 shows an example of the position where each piece of information is viewed by the operator P. Broken in Figure 3 The range indicated by the line indicates the field of view FV when the operator P is looking ahead, and the field of view FV The track 40 ahead is visible in the V. In Fig. 3, the center of the field of view FV is The area indicated by the two-dot chain line is the area where external conditions necessary for safe driving of the vehicle can be visually checked. This is the visibility range S for the external situation.

[0025] The first to fourth information are placed outside the external situation visibility range S, that is, at the periphery of the visual field FV. Information display lights L1 to L4 are projected. A brief explanation of each information display light L1 to L4 To explain, the first information display light L1 indicating the brake pressure is projected at the lower right of the field of view FV. It is.

[0026] In addition, the track 40 at the lower center of the field of view FV with little change in brightness and color is used as a background. A second information display light L2 indicating speed information is projected at an easily visible position. . Then, at the lower left of the field of view FV, a third display light L3 displays "door closed" or "door open". is being illuminated.

[0027] On the other hand, in the upper right of the field of view FV, the estimated arrival time to the next destination station and the arrival time from the current time are displayed. A third information display light L3 indicating the remaining time until the scheduled arrival time is projected. This first 3 In the information display light L3, the lit part of the linear bar graph in the upper row (blacked out) The section (blanked) indicates the remaining time mentioned above. The bar graph is one scale is 4 seconds, and in the case of FIG. 3, the remaining time is 1 minute and 40 seconds.

[0028] In this way, when displaying multiple pieces of information at once, excluding external situation visibility range A, It is advisable to display more important information in a position where it is easier to see. The degree of importance here means that there is a high need for driving.

[0029] In this embodiment, information for a maximum of 6 areas from the first to sixth information display lights L1 to L6 is used. However, as shown in FIG. If the information is sufficient, optical member units corresponding to the fifth and sixth display lights L5 and L6 Cover the container 20 with a lid to prevent light from coming out. It contains information Even though the area is not illuminated, when light is projected on it, the outside world cannot be seen in that area. The aim is to avoid projecting unnecessary light as much as possible.

[0030] In addition, in terms of preventing unnecessary light from being emitted as much as possible, each optical component unit By providing an aperture in the lens 20 and adjusting the aperture, light is emitted by the lens 22. The projection range of the first to sixth information display lights L1 to L6 may be limited. For example, Figure 3 Since the third information display light L3 in , the range in which information is included is narrow, Even if the third information display light L3 is projected within the range N indicated by the circle, the information content cannot be visually recognized. This allows unnecessary light to be removed.

[0031] As mentioned above, the vehicle head-up display of this embodiment is a CRT12 Based on the information displayed in the first to sixth areas A1 to A6 of the light emitting display surface 14 of The first to sixth information display lights L1 to L6 are transmitted to the corresponding optical member units 20. A lens 22 projects light toward the combiner 9. Therefore, each lens 22 is compatible with It is only necessary to emit the information display lights L1 to L6 in the areas A1 to A6, and the small diameter A small lens 22 can be used.

[0032] Therefore, even if the lens 22 with a relatively large curvature is used, each information display light L1 to L 6, so that the light is projected at the center of the lens where the distortion of the projected image is small. It can be done. On the other hand, if the curvature of the lens 22 is increased, the CRT 12 will emit more light. The distance between the optical display surface 14 and the lens 22 can be shortened.

[0033] As a result, the information projecting device 10 is made smaller while obtaining an image that does not hinder visibility. This also reduces the installation space on the instrument panel 6. Also, small diameter lenses Since it can be handled with the same size 22, mass production and cost reduction can be achieved.

[0034] Furthermore, each lens 22 determines how the first to sixth information display lights L1 to L6 are projected. The direction can be set individually. Therefore, near the center of the light emitting display surface 14, there is a We intentionally created a dead space (area where information cannot be displayed) that corresponds to the visibility range A. Even if it is not set, the external situation visibility range S is secured when the combiner 9 is illuminated. can be done. Therefore, the width of the light-emitting display surface 14 is the minimum necessary for displaying information. The information projection device 10 can be further downsized.

[0035] The present invention is not limited to such embodiments in any way, and the gist of the present invention is described below. It may be implemented in various ways without departing from the scope. For example, in this example, information CRT12 is used as the display unit, but liquid crystal display, plasma display A light emitting diode display, light emitting diode display, etc. may also be used.

[0036] Furthermore, in this embodiment, one area on the light emitting display surface 14 displays one piece of information. However, for example, if two or more pieces of information with a small display range are combined into one area, It may be displayed in the area.

[0037]

[Effect of the idea] As detailed above, the vehicle head-up display of the present invention can be used in multiple areas. The information display light for each area of the information display surface divided into Since it is constructed so that it can project light using wood, it can be made smaller while ensuring good visibility. This effect is achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a head-up display for a vehicle, which is an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an information display area on a light emitting display surface of this embodiment.

FIG. 3 is an explanatory diagram showing an example of a position where information is viewed by a driver.

[Explanation of symbols]

A1 to A6...first to sixth areas L1 to L6...first to
Sixth information display light 9...combiner 10...information projector 12...CRT 14...light emitting display surface 16...positioning frame 20...optical member unit 22...lens (=optical member)

Claims (1)

[Scope of utility model registration request] 1. An information projecting device having an information display section having a light emitting display surface capable of displaying a plurality of pieces of information, and a light projecting section projecting information display light from the light emitting display surface in a predetermined direction;
A vehicle head-up display comprising a combiner that transmits light from the outside world and reflects or diffracts the information display light projected from the light projecting section in a predetermined direction, wherein the light projecting section includes a plurality of light projecting sections. The light emitting display surface is divided into regions, and the light emitting display surface is provided with an optical member corresponding to each region, and the information display light for each region can be projected by the corresponding optical member. A characteristic head-up display for vehicles.