JP2010250057A - Virtual image type sign display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a virtual image type sign display device with which a virtual image with lessened distortion can be formed in a prescribed position without obstructing the visual field of a driver. <P>SOLUTION: The virtual image type sign display device includes: a light source unit 2 having a light source 5, and a mask plate 7 located in front of the light source 5 and formed such that a required pattern is used as a light transmissive portion 7a; a flat mirror 3 located frontward in the emitting direction of the light source unit 2; a transparent plate unit 4 located opposite the light source 5 with the normal of the flat mirror 3 therebetween and having a transparent plate 11 of a tiltable storage system. Thus, an actual image of light emitted from the light source 5 and transmitted through the light transmitting portion 7a of the mask plate 7 is reflected by the flat mirror 3, and the image reflected by the flat mirror 3 is projected onto the transparent plate 11. Then, the image projected on the transparent plate 11 is reflected by the transparent plate and further projected onto human eyes (e). Thereby, the virtual image 22 is formed beyond the transparent plate 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a virtual image type sign display device, and more particularly to a virtual image type sign display device in which a vehicle driver recognizes a vehicle width sensation of a vehicle by a virtual image of a corner pole.

  In order to attach the corner pole to the vehicle, a relatively large amount of labor is required for the mounting work, and auxiliary parts such as mounting brackets attached to the vehicle body may impair the appearance of the vehicle.

  To solve this problem, a virtual image of the corner pole is created at a distance from the driver's eye to the position where the corner pole should be, and the driver recognizes the virtual image of the corner pole as if it were real. A method for trying to grasp the sense of vehicle width has been proposed.

  Specifically, as shown in FIG. 5, the light source 52 is disposed on the back side of the transparent film 51 on which the reduced view 50 of the corner pole is drawn, and the first mirror 53 is disposed at the front side front position of the transparent film 51. A second mirror 54 is disposed at an inclined position of the first mirror 53, and an imaging convex lens 55 and a tiltable transparent plate 56 are sequentially disposed above the second mirror 54.

  Thereby, the reduced view 50 of the corner pole is irradiated onto the light source 52 and projected onto the first mirror 53, the reflected image is projected onto the second mirror 54 and reflected again, and the reflected image is projected onto the convex lens 55. In the convex lens 55, the reflected image from the second mirror 54 is magnified to a predetermined magnification, and the magnified image is projected on the transparent plate 56.

  The projected image on the transparent plate 56 is located in front of the driver's (eye) and below the driver's line of sight 57. When the driver views the transparent plate 56, the vehicle body corner in front of the windshield passes through the transparent plate 56. A real-size virtual image 58 of a corner pole is visually recognized at the position of the portion (see, for example, Patent Document 1).

  As another method, a proposal as shown in FIG. 6 has also been made. The light source 82 is attached in the vicinity of the other end surface side of the case 81 having one end surface side as an opening 80, and between the reflecting mirror 83 and the opening 80 disposed at a predetermined angle with respect to the irradiation direction of the light source 82. A collimating lens 84 and a beam splitter 85 are arranged, and a correction lens 86 and a transparent plate 87 that can be rotated and tilted are arranged above the beam splitter 85 to constitute an apparatus main body 90. Secure on the dashboard. Similarly, an actual image 88 made of a retroreflective member is disposed, for example, on the front pillar in the passenger compartment.

  Thus, in the optical system constituted by the apparatus main body 90 and the real image 88, the reflected light emitted from the light source 82 and reflected by the reflecting mirror 83 is sequentially transmitted through the collimator lens 84 and the beam splitter 85 to obtain the real image. The reflected image of the real image 88 that is irradiated to the real image 88 and retroreflected by the real image 88 returns to the beam splitter 85.

  In the beam splitter 85, the reflected image is branched into transmission and reflection, and the reflected image is irradiated on the incident surface of the correction lens 86 positioned above, and the reflected image emitted from the exit surface of the correction lens 86 is enlarged. An enlarged reflection image is obtained.

  This magnified reflected image is formed on the corner of the vehicle where the corner pole is originally located, and the driver recognizes the magnified reflected image (virtual image) 89 like a real corner pole, thereby recognizing the vehicle width sensation of the vehicle. (See, for example, Patent Document 2).

Utility Model Registration No. 2518179 JP 2008-275677 A

  By the way, in the optical corner pole device having the configuration of Reference 1 of the above-mentioned operation, the distance and size from the transparent plate 56 to the position of the virtual image 58 of the corner pole are determined from the reduced view 50 of the corner pole in the device. The distance corresponding to the mounting position of the main body, the inclination angle of the transparent plate 56, the magnification of the convex lens 55, and the like is added to the optical path length up to 56. For this reason, it is inevitable that the optical path length of the optical system in the apparatus becomes long and the apparatus becomes large.

  Further, by increasing the magnification of the convex lens 55, the influence of the aberration of the convex lens 55 increases, and when the viewpoint position moves, the virtual image 58 of the corner pole appears to be distorted to the driver.

  Therefore, the proposal of Reference Document 2 has been made in view of the above problems, and a virtual image type sign display device capable of reducing the size of the device and forming a virtual image with less distortion at a predetermined position. It has been realized.

  However, in this virtual image type sign display device, it is necessary to change the mounting position of the device body in order to adjust the position of the virtual image of the corner pole. In this case, the driver moves the position of the device body in the longitudinal direction of the vehicle. When it is moved, it becomes difficult to determine how much the position of the virtual image has moved from the position that should originally be formed.

  Further, since the optical system excluding the actual image is integrated with the apparatus main body, the apparatus main body having a certain size is installed in front of the vehicle (for example, on the dashboard). Then, when the device is not used, the driver's field of view is obstructed, and driving may be hindered.

  Accordingly, the present invention was devised in view of the above problems, and the object of the present invention is to form a virtual image with less distortion at a predetermined position without obstructing the driver's field of view. The object is to provide a virtual image type sign display device.

In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention includes a light source unit including a light source and a mask plate positioned in front of the light source in the irradiation direction and having a light transmission part and a light shielding part. ,
A plane mirror located in front of the light source unit in the irradiation direction and capable of rotating and tilting;
The normal line and the optical axis with respect to the normal line on the same plane as the plane including the normal line of the plane mirror and the optical axis of the light source unit and opposite to the light source across the normal line A virtual-image-type sign display device comprising a transparent plate unit including a retractable storage-type transparent plate that is positioned in the same angle as the angle formed by and is supported so as to be tiltable, rotatable, and movable up and down,
An actual image of light emitted from the light source and transmitted through the light transmission part of the mask plate is reflected by the plane mirror, and the reflected image is projected onto the transparent plate. The projected image is reflected by the transparent plate and is human. The virtual image is formed in the back of the transparent plate by being projected into the eyes.

  According to a second aspect of the present invention, in the first aspect, the light source unit is positioned so as to be linearly movable back and forth in the plane mirror direction, and the distance between the light source unit and the plane mirror is adjusted. The distance from the transparent plate to the imaging position of the virtual image is controlled.

  Further, in the invention described in claim 3 of the present invention, in any one of claims 1 and 2, the light source unit irradiates the mask plate with the light emitted from the light source as parallel light. It comprises a parallel light forming means.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the light source unit, the plane mirror, and the transparent plate unit are all disposed separately in the vehicle interior. In addition, the light source unit and the plane mirror are disposed in a front pillar, and the transparent plate unit is disposed in a center console.

  According to a fifth aspect of the present invention, in any one of the first to third aspects, the light source unit, the plane mirror, and the transparent plate unit are all disposed separately in the vehicle interior. In addition, the light source unit is disposed in a dashboard, and the plane mirror and the transparent plate unit are disposed in a center console.

  A light source unit including a light source and a mask plate on which a desired pattern is formed as a light transmission portion and in front of the light source, a plane mirror positioned in front of the light source unit in the irradiation direction, and a plane mirror method It was set as the structure by the transparent plate unit which was located on the opposite side to the light source on both sides of the line, and was equipped with the folding storage type transparent plate. As a result, the actual image of the light beam emitted from the light source and transmitted through the light transmission part of the mask plate is reflected by the plane mirror, and the reflected image is projected onto the transparent plate. By projecting to the eye, the virtual image is formed in the back of the transparent plate.

  As a result, a virtual image is formed only by two reflections by a plane mirror and a transparent plate disposed in the optical path. Therefore, it is possible to reliably form a virtual image with little distortion at a predetermined position.

  In addition, the vehicle is configured so as not to obstruct the driver's field of view when it is disposed in the passenger compartment, and does not hinder the traveling of the vehicle.

  In other words, for example, when the mask plate is a corner pole design, the vehicle can be driven with the same sense of vehicle width as the original corner pole by the virtual image of the corner pole. Despite being disposed in the passenger compartment, the driver's field of view is not obstructed and the vehicle is not hindered.

It is explanatory drawing of the optical system of this invention. It is explanatory drawing of the specific example of this invention. It is explanatory drawing of Example 1 of this invention. It is explanatory drawing of Example 2 of this invention. It is explanatory drawing of a prior art example. Similarly, it is explanatory drawing of a prior art example.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 (the same reference numerals are given to the same portions). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  1 and 2 are explanatory views of an optical system according to a virtual image type sign display device of the present invention, FIG. 1 is a diagram showing a basic configuration of the optical system, and FIG. 2 is a diagram showing a specific example of the optical system. .

  From FIG. 1, the optical system of the virtual image type sign display device 1 irradiates the mask plate 7 having the light transmitting portion 7a and the light shielding portion 7b with the parallel light beam L from one side, and the light transmitting portion 7a of the mask plate 7 is irradiated. The real image by the transmitted light beam is reflected by the plane mirror 3 and the reflected image is projected onto the transparent plate 11, and the projected image is reflected by the transparent plate 11 and projected onto the human eye (e), thereby the virtual image. 22 is imaged behind the transparent plate 11.

  The specific configuration of the optical system of the virtual image display device 1 is mainly composed of a light source unit 2, a plane mirror 3, and a transparent plate unit 4, as shown in FIG. Yes.

  The light source unit 2 includes a light source 5, a reflector 6 having a concave reflecting surface 6 a surrounding the light source 5 and having an opening on one end side, and a mask plate 7 disposed in front of the opening of the reflector 6. And a slider 9 slidably fitted to the guide rail 8 and supported by a light source unit support 10.

  The reflector 6 converts the reflected light emitted from the light source 5 and reflected by the reflecting surface 6a of the reflector 6 into parallel rays, and irradiates the parallel rays to the mask plate 7 located in front of the opening. For this reason, the reflecting surface 6a of the reflector 6 is preferably made of, for example, a parabolic reflecting surface in consideration of the optical function. Since the reflector 6 is one means for irradiating the mask plate 7 with parallel rays, it may not be necessary to provide the reflector 6 when other means are used.

  The mask plate 7 is composed of a light transmitting portion 7a and a light shielding portion 7b, and a desired pattern is formed as the light transmitting portion 7a. Irradiation light (parallel light) from the back surface is transmitted through the light transmitting portion 7a. A real image with the design is irradiated forward as parallel rays.

  The plane mirror 3 is a reflecting mirror that has a planar reflecting surface and can be rotated and tilted. The plane mirror 3 is disposed in front of the light source unit 2 in the irradiation direction and projects a real image from the light source unit 2. The distance between the plane mirror 3 and the light source unit 2 is set by sliding the slider 9 held by the light source unit 2 via the light source unit support 10 linearly along the guide rail 8 so as to freely advance and retract.

The transparent plate unit 4 includes a transparent plate 11 made of a colorless transparent or colored transparent flat plate made of polycarbonate resin or acrylic resin as a raw material. The transparent plate 11 is tilted, rotated, and rotated through a transparent plate support 13 with respect to the case 12. It is of a retractable storage type supported so as to be movable up and down, and the light source 5 sandwiches the normal line N ₁ on the same plane as the plane including the normal line N ₁ of the plane mirror 3 and the optical axis X of the light source unit 2. the opposite is disposed normal line N ₁ and the optical axis X and the direction is the angle α and the corner α with respect to the normal N _1.

  In the optical system having such a configuration, when the light source 5 of the light source unit 2 is turned on, the reflected parallel light beam emitted from the light source 5 and reflected by the reflecting surface 6a of the reflector 6 is irradiated to the mask plate 7 positioned in the front, An actual image of the design is transmitted from the light source unit 2 toward the front plane mirror 3 as a parallel light beam through the light transmission part 7a of the mask plate 7.

Then, the actual image emitted from the light source unit 2 toward the plane mirror 3 is reflected by the plane mirror 3 toward the transparent plate 11, and the actual image by the reflected light is reflected on the transparent plate 11 set in a predetermined direction and a predetermined inclination. Projected. The actual image projected on the transparent plate 11 is on the same plane as the plane including the normal N ₂ of the transparent plate 11 and the reflected light from the plane mirror 3, and is opposite to the plane mirror 3 across the normal N ₂ . It is reflected in a direction in which the normal line N ₂ and reflected rays and the angle formed β same corner β with respect to the normal N _2.

  When the human eye (e) is positioned on the extension line in the reflection direction, the actual image reflected by the transparent plate 11 appears as if it is positioned behind the transparent plate 11. That is, the virtual image 22 of the real image is visually recognized in the back of the transparent plate 11.

  At this time, the direction connecting the virtual image 22 is set by adjusting the direction and inclination of the transparent plate 11, and the position (distance) D <b> 1 from the transparent plate 11 is the distance D <b> 2 connecting the light source 5 and the plane mirror 3, and the plane mirror 3. And the distance D3 connecting the transparent plate 11 and the transparent plate 11. Therefore, when the light source unit 2 slides the slider 9 held via the light source unit support 10 along the guide rail 8 in the direction approaching the plane mirror 3 or away from the plane mirror 3, the light source 5 and the plane mirror 3 are moved. The distance D1 from the transparent plate 11 to the virtual image 22 is set by adjusting the distance D2.

  FIG. 3 shows a state when mounted in a vehicle interior as a specific example of the virtual image type sign display device described above. In this case, a corner pole pattern is formed at the light transmission part of the mask plate, and a virtual image of the corner pole is formed at the original position of the vehicle, and the driver recognizes the virtual image of the corner pole as if it were real. By doing so, the vehicle width sensation is surely obtained.

  The configuration is such that a guide rail 8 is attached along the front pillar garnish 20a covering the side surface of the front pillar 20 on the passenger compartment side, and the light source unit 2 is held on the guide rail 8 via a light source unit support (not shown). A slider (not shown) is slidably fitted.

  The plane mirror 3 is tiltably disposed on the extended line of the guide rail 8 at the lower part of the front pillar garnish 20a, and the position where the driver's line of sight (e) and the corner pole of the vehicle should be located in the center console 21 The transparent plate unit 4 is disposed so that the transparent plate 11 is positioned on the connecting line segment.

  In that case, the sliding position of the light source unit 2 along the guide rail 8, the tilting direction of the plane mirror 3, the position of the transparent plate unit 4, and the tilting, turning, and rotation of the transparent plate 11 provided in the transparent plate unit 4. The elevation position is set by the following procedure.

  First, the driver sits on the driver's seat and overlaps the position where the corner pole should be at the end of the line of sight. Then, the transparent plate unit 4 is fixed in the center console 21 below the line of sight (the line connecting the driver's eyes and the position where the corner pole of the vehicle should be), and the transparent plate 11 provided in the transparent plate unit 4 is fixed. The transparent plate 11 is positioned on the line of sight by adjusting the height.

  Next, the light source 5 provided in the light source unit 2 is turned on. Then, the mask plate 7 is irradiated with light from the light source 5 on the back surface, and a real image with a design of a corner pole of a light transmission portion (not shown) is projected onto the plane mirror 3. The positional relationship between the irradiation direction of the light source unit 2 and the plane mirror 3 is set in advance when the guide rail 8 and the plane mirror 3 are disposed.

  Next, the direction and inclination of the plane mirror 3 are adjusted, and the reflected image of the actual image of the corner pole emitted from the light source unit 2 and projected onto the plane mirror 3 is directed toward the transparent plate 11 positioned on the driver's line of sight. The actual image 22 is projected on the transparent plate 11.

  Next, the direction and inclination of the transparent plate 11 are adjusted so that the actual image 23 projected on the transparent plate 11 is reflected by the transparent plate 11 and the reflected image enters the driver's line of sight (e). Set. Then, when viewed from the driver, the virtual image 22 formed on the line of sight behind the transparent plate 11 (the line connecting the driver's line of sight and the position where the corner pole of the vehicle should be) is a real corner in that direction. It feels like the pole is located.

  However, the virtual image 22 of the corner pole is formed on the driver's line of sight (e), but the position is not adjusted. Therefore, finally, the distance between the light source 5 and the plane mirror 3 is adjusted by sliding the light source unit 2 along the guide rail 8, and the corner pole virtual image 22 is formed at an accurate position.

  As a result, the driver recognizes that the corner pole virtual image 22 formed in the back of the transparent plate 11 is the same as the original corner pole, which is equivalent to the vehicle width sense obtained by the original corner pole. You can drive the vehicle with a sense.

  In this embodiment, the light source unit 2, the plane mirror 3, and the transparent plate unit 4 constituting the virtual image type sign display device are separately arranged in the vehicle interior, and the light source unit 2 and the plane mirror 3 are arranged on the front pillar 20. It arrange | positioned along the front pillar garnish 20a which covers the compartment side surface. Therefore, the light source unit 2 and the plane mirror 3 do not hinder the driver's field of view and do not hinder the traveling of the vehicle.

  Further, as described above, the transparent plate unit 4 is configured to be retractable and can be stored in the case 12 of the transparent plate unit 4 when not used. Accordingly, when the vehicle does not require a high sense of vehicle width by the corner pole, the transparent plate 11 does not interfere with the driver's view by storing the transparent plate 11 in the case 12 of the transparent plate unit 4. There will be no hindrance to the running of the vehicle.

  As shown in FIG. 4, in this embodiment, the light source unit is supported on the guide rail 8 and the slider 9 fitted in the guide rail 8 in the dashboard 24, for example, in the interior of the vehicle interior, as compared with the configuration of the first embodiment. A configuration in which the light source unit 2 held via the body 10 is disposed, and the transparent plate unit 4 including the plane mirror 3 and the retractable reflector 11 is disposed in, for example, the center console 21 in the vehicle interior. Has been.

  Then, a space is secured using the line segment region connecting the light source unit 2 and the plane mirror 3 as an optical path, and similarly, a space is secured using the line segment region connecting the plane mirror 3 and the transparent plate 11 as an optical path.

  As described above, the second embodiment differs from the first embodiment in that the arrangement positions of the light source unit 2, the plane mirror 3, and the transparent plate unit 4 constituting the virtual image type sign display device are changed. The sliding position of the light source unit 2 along the guide rail 8, the tilting direction of the plane mirror 3, the position where the transparent plate unit 4 is disposed, and the tilting, rotating and lifting / lowering positions of the transparent plate 11 provided in the transparent plate unit 4. The setting procedure and the optical path formation from the light source 5 to the formation of the virtual image of the corner pole are the same as in the first embodiment. Accordingly, the description thereof is omitted here.

  In place of the transparent plate related to the formation of the virtual image as in the first and second embodiments, coloring is performed on the windshield on the line segment connecting the driver's eyes and the position where the corner pole of the vehicle should be. A virtual image can also be obtained by attaching a transparent film or a smoke-like film.

  As described above, the virtual image type sign display device of the present invention is a plane mirror in which the formation of a virtual image of a pattern (in the embodiment, a corner pole pattern) connected to the end of the driver's line of sight is disposed in the optical path. And only by two reflections by the transparent plate. Therefore, it is possible to reliably form a virtual image with little distortion at a predetermined position.

  In addition, only the transparent plate is exposed in the passenger compartment even though it is installed in the passenger compartment, and it is configured to be retractable so that it does not interfere with the driver's view when not in use. The vehicle will not be disturbed.

  In other words, when used, the vehicle can be operated with a sense equivalent to the vehicle width sense obtained with an original corner pole, and when not in use, the driver's view is obstructed despite being installed in the passenger compartment. It will not interfere with the running of the vehicle. The present invention can be applied not only to the front but also to a corner pole such as the rear.

DESCRIPTION OF SYMBOLS 1 Virtual image type label display apparatus 2 Light source unit 3 Flat mirror 4 Transparent board unit 5 Light source 6 Reflector 6a Reflecting surface 7 Mask board 7a Light transmission part 7b Light shielding part 8 Guide rail 9 Slider 10 Light source unit support body 11 Transparent board 12 Case 13 Transparent Plate support 20 Front pillar 20a Front pillar garnish 21 Center console 22 Virtual image 23 Real image 24 Dashboard

Claims (5)

A light source unit comprising a light source and a mask plate positioned in front of the light source in the irradiation direction and having a light transmission part and a light shielding part;
A plane mirror located in front of the light source unit in the irradiation direction and capable of rotating and tilting;
The normal line and the optical axis with respect to the normal line on the same plane as the plane including the normal line of the plane mirror and the optical axis of the light source unit and opposite to the light source across the normal line A virtual-image-type sign display device comprising a transparent plate unit including a retractable storage-type transparent plate that is positioned in the same angle as the angle formed by and is supported so as to be tiltable, rotatable, and movable up and down,
An actual image of light emitted from the light source and transmitted through the light transmission part of the mask plate is reflected by the plane mirror, and the reflected image is projected onto the transparent plate. The projected image is reflected by the transparent plate and is human. A virtual image type sign display device, wherein the virtual image is formed in the back of the transparent plate by being projected into the eyes of the image.   The light source unit is linearly movable in the direction of the plane mirror, and controls the distance from the transparent plate to the imaging position of the virtual image by adjusting the distance between the light source unit and the plane mirror. The virtual image type sign display device according to claim 1, wherein   3. The virtual image according to claim 1, wherein the light source unit includes parallel light forming means for irradiating the mask plate with light emitted from the light source as parallel light. 4. Type sign display device.   The light source unit, the plane mirror, and the transparent plate unit are all disposed separately in the vehicle interior, the light source unit and the plane mirror are disposed on the front pillar, and the transparent plate unit is disposed in the center console. The virtual image type sign display device according to any one of claims 1 to 3, wherein the virtual image type sign display device is provided.   The light source unit, the plane mirror, and the transparent plate unit are all disposed separately in a vehicle interior, the light source unit is disposed in a dashboard, and the plane mirror and the transparent plate unit are disposed in a center console. It arrange | positions, The virtual image type | formula label | marker display apparatus of any one of Claims 1-3 characterized by the above-mentioned.

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