JP2019200313A - Aerial image display device - Google Patents

Abstract

To provide an aerial image display device which includes an illumination and display function having three-dimensional designability, even under a condition where an arrangement space for an optical system is limited.SOLUTION: An aerial image display device includes: a first light source; a second slight source; a first optical member comprising a half mirror disposed at a surface side; and a second optical member arranged oppositely on a reflection surface of the half mirror and at least including a retroreflection sheet. By light emitted from the first light source, reflected by the first optical member and retro-reflected by the retroreflection sheet of the second optical member, a real image is displayed in the air, and by light emitted from the second light source, and multiply reflected between the first optical member and the second optical member, a plurality of virtual images are displayed at a back of the real image.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an aerial image display device, and more particularly, to an aerial image display device capable of providing illumination having a three-dimensional design by combining a real image projected into the air and a multiple reflected virtual image.

  Vehicle interior members such as door trims, roof linings, instrument panels, and scuffs are equipped with lighting devices for the purpose of operation and decoration. In addition, cup holders, ashtrays, scuff plates, console boxes, overhead consoles, glove boxes, and the like may also be equipped with lighting devices to improve designability and position indication of accessories.

  Conventionally, the use of a device (aerial image display device) that displays a real image in the air has been studied as means for allowing a user to visually recognize an image on a vehicle-mounted display. Patent Document 1 discloses an apparatus that displays light emitted from a display in the air using at least one mirror and a gradient index lens element or a plurality of myo lens plates.

  As a means for displaying an aerial image, the use of a retroreflective member (element) has been studied. Patent Document 2 discloses an apparatus that reflects light emitted from a display panel with a half mirror, reflects it with a retroreflective element, and transmits the half mirror to form an image in the air.

  Techniques that combine aerial images with other displays are also being considered. Japanese Patent Application Laid-Open No. 2004-228867 provides an apparatus for displaying a real image of an object to be observed as an aerial image by providing a display surface of an electronic display or devices on the back wall and providing a real mirror image forming optical system on the viewer side. Is disclosed.

Japanese Patent No. 3451387 JP 2014-13319 A Japanese Patent No. 5001888

When providing an aerial image display function to an illuminating device or a display device, a space for arranging an imaging optical system is required. In particular, the greater the distance from the surface of the interior member of the apparatus to the aerial image, the greater the effect that the image appears to rise from the surface for visual recognition as an aerial image. To that end, the size of the imaging optical system is increased. Create a need. Patent Documents 1 and 3 describe a technique for incorporating an aerial image display function into an in-vehicle display, and Patent Document 2 also describes an apparatus that displays an image of a display panel in the air. When these devices are used to add an aerial image display function to the vehicle control display in front of the driver's seat, a certain amount of space can be secured. On the other hand, for example, there are restrictions on the thickness of the space that can be secured, such as interior members such as the ceiling and floor of a vehicle and scuffs. In addition, it is difficult to secure a large space for an aerial image display optical system even in a door trim or a central console.

  An object of the present invention is to provide an aerial image display device having an aerial image display function having a three-dimensional design property even under a condition where an arrangement space of an optical system is limited.

  The aerial image display device of the present invention includes a first optical member including a first light source, a second light source, and a half mirror (first half mirror) disposed on the surface side of the interior member, A second optical member including at least a retroreflective sheet disposed on the reflection surface of the half mirror, emitted from the first light source, reflected by the first optical member, and further, the second optical member. The light retroreflected by the retroreflective sheet of the optical member displays a real image in the air and is emitted from the second light source, and by Fresnel reflection of the first optical member and the second optical member. A plurality of virtual images are displayed on the background of the real image by the multiple reflected light.

  According to the aerial image display device having the above-described configuration, the light-emitting display unit (first light-emitting display unit) including the first light source, the first optical member, and the second optical member displays a real image, and A plurality of virtual images (mirror images by multiple reflections) displayed by a light-emitting display unit (second light-emitting display unit) composed of two light sources, a first optical member, and a second optical member represent a background image having a depth. Therefore, even if the distance between the surface of the member and the aerial image cannot be increased due to restrictions on the installation space of the optical system, the displayed aerial image floats against the virtual image as a background, and is three-dimensional. Illumination / display function with a good design can be exhibited.

  In the aerial image display device, the second optical member may further include a half mirror (second half mirror) disposed on the surface side of the retroreflective sheet. In this case, the formation of a virtual image (mirror image) by multiple reflection is performed by multiple reflection between the first half mirror on the surface side and the second half mirror opposed thereto. At that time, since the reflectance of the half mirror is higher than that of the Fresnel reflection of the retroreflective sheet, the brightness of the virtual image forming the background image can be improved. Moreover, the brightness of the virtual image forming the background image can be adjusted by changing the reflectance of the half mirror.

  In the aerial image display device, a light shielding sheet may be disposed between the retroreflective sheet of the second optical member and the half mirror (second half mirror). By using the light shielding sheet on the retroreflective sheet, formation of the secondary image of the aerial image can be suppressed and the aerial image can be observed more clearly.

  In the aerial image display device having the above configuration, the light shielding sheet may be a gradation sheet whose light transmittance changes continuously or stepwise. By using the gradation sheet, it is possible to avoid a decrease in design properties due to discontinuous discontinuity of the aerial image when the viewing angle is lowered.

  In the aerial image display device, it is preferable that the real image has a luminance that is higher (brighter) than a luminance of a virtual image serving as a background. Thereby, an aerial image can be visually recognized more clearly.

The aerial image display device further includes a total reflection mirror, and is configured such that light emitted from the first light source is incident on the total reflection mirror, reflected, and incident on the first half mirror on the surface side. It may be what was done. The light once reflected by the first half mirror is reflected by the retroreflective sheet and passes through the surface side half mirror to form an aerial image.
According to the aerial image display device having this configuration, a real image can be displayed at a position higher than the plane-symmetric position with respect to the light source, and a more three-dimensional design can be achieved.

  In the aerial image display device, a collar portion (light-shielding plate) may be disposed on the surface side with respect to the first light source.

  The aerial image display device can be used as an illumination device for an interior member (for example, a vehicle interior member). In that case, the interior member may be an interior member having a storage space inside. For example, you may design so that the shape of an internal storage space may be imitated by several virtual images by said multiple reflection.

  According to the aerial image display device of the present invention, the depth of illumination and display is produced using a virtual image (mirror image) formed by multiple reflections, and the aerial image is displayed against the background, thereby installing the optical system. Even under space-constrained conditions, it is possible to obtain a three-dimensional design lighting / display effect in which an aerial image is clearly floated and observed in the background.

It is a schematic cross section showing an imaging process of an aerial image (real image). It is a schematic cross section which shows the formation process of a some virtual image. It is a schematic cross section which shows the structure of the optical system of the aerial image display apparatus which concerns on one Embodiment of this invention. It is a schematic cross section which shows the modification of the optical system shown in FIG. It is a schematic cross section which shows the modification of the optical system shown in FIG. FIG. 5B is a schematic cross-sectional view showing how the aerial image looks when the optical system shown in FIG. 5A is viewed at a low angle. It is a schematic cross section which shows the modification of the optical system shown to FIG. 5A. It is a schematic cross section which shows the modification of the optical system shown in FIG. It is a schematic cross section which shows the modification of the optical system shown in FIG. It is a perspective view which shows typically the interior member near the driver's seat of a car. It is a typical perspective view which shows the structure of the cup holder provided with the aerial image display apparatus which concerns on one Embodiment of this invention as an illuminating device. It is a perspective view which shows the structure of the illumination unit of the illuminating device with which the cup holder shown in FIG. 8 is provided. It is a perspective view which shows the state in the middle of the assembly | attachment of an optical system of the illuminating device with which the cup holder shown in FIG. 8 is equipped. It is a perspective view which shows the state in the middle of the assembly | attachment of an optical system of the illuminating device with which the cup holder shown in FIG. 8 is equipped. It is a perspective view which shows how a virtual image and a real image look at the time of lighting apparatus lighting with which the cup holder shown in FIG. 8 is equipped. It is a figure which shows a mode that a 2nd real image is observed at the time of lighting apparatus lighting shown in FIG. It is a perspective view which shows a mode that a discontinuity appears in a real image, when a light shielding sheet is installed on the retroreflection sheet of the illumination unit of the illuminating device shown in FIG. It is a perspective view which shows the appearance of a real image at the time of installing a gradation sheet | seat on the retroreflection sheet | seat of the illumination unit of the illuminating device shown in FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram for explaining a process in which an aerial image is formed by a half mirror and a retroreflective sheet. It is assumed that the observer (VE) sees the aerial image from the upper left position in the figure. Light sources (light emitters) 1 and 2 installed on a support (not shown) are arranged between the first optical member O1 and the second optical member O2 installed on the surface side, and are visually recognized. A first light source 1 is installed on the person side, and a second light source 2 is installed on the side facing the first light source 1. Here, the first optical member O1 is composed of the first half mirror 3, and the second optical member O2 is composed of the retroreflective sheet (retroreflective member) 4. In the description of the present specification, the surface side refers to the surface side of the interior member, more specifically, the surface side (viewer side) of the lighting device included in the interior member.

  The light L1 emitted from the light emitting part PL on the first light source 1 in the direction indicated by the upper arrow is partially reflected by the part P1 on the reflecting surface of the front half mirror 3 and enters the retroreflective sheet 4. The light is reflected in the incident direction (as light traveling in the opposite direction to the incident light) at the part P2 of the retroreflective sheet 4. A part of the retroreflected light is transmitted through the first half mirror 3 and emitted outward. On the other hand, the light L2 emitted from the light emitting part PL in the direction indicated by the arrow below is partially reflected by the part P3 on the reflecting surface of the first half mirror 3 and enters the retroreflective sheet 4, and the retroreflective sheet. 4 is reflected in the incident direction, and part of the light is transmitted through the first half mirror 3 and emitted outward. The light emitted in two directions intersects at one place PR in the air. By a similar process, the light in each direction emitted from the light emitting part PL in the direction of the first half mirror 3 intersects with the part PR in the air, and a real image of the light emitting part PL is formed in PR. By such a process, the first real image S1 of the light source 1 is formed at an aerial position that is substantially plane-symmetric with respect to the half mirror 3, and is visually recognized by the observer VE.

  In FIG. 1 and the following description, the dimensional ratios in the drawings do not indicate actual dimensional ratios, and the thicknesses of plate-like (sheet-like) optical members such as half mirrors and retroreflective sheets are emphasized for explanation. Has been. Further, for example, in FIG. 1, light paths of light that are not related to the contents of explanation, such as light transmitted through the half mirror 3 at the part P <b> 1 and light from the real image toward the observer, are not shown. In addition, the refraction at the interface of the optical member is not shown for simplification of illustration and explanation.

  The combination of the half mirror 3 and the retroreflective sheet 4 also functions as a laminated mirror structure because Fresnel reflection occurs on the surface of the retroreflective sheet. As shown in FIG. 2, light is emitted from the second light source 2 and multiplexed between the first optical member O1 (first half mirror 3) and the second optical member O2 (here, the retroreflective sheet 4). A mirror image that is reflected and reflected by the retroreflective sheet 4 and shown by the light LT transmitted through the half mirror 3 is visually recognized as a plurality of virtual images F1 to Fn distributed in the depth direction from the light source. At that time, since the intensity of the reflected light LR is gradually attenuated, the brightness of the virtual image is also gradually attenuated from F1 to Fn. Note that the number n of virtual images observed here depends on the design of the optical system.

  As shown in FIG. 3, in the aerial image display device of the present invention, the multiple reflection images of the light source 2 are observed as a plurality of virtual images F1... Fn by the process described in FIGS. One real image S1 is observed. That is, the first light source, the first optical member O1 (first half mirror 3), and the second optical member O2 (retroreflective sheet 4) provide the first light-emitting display unit E1 that displays the real image S1. The second light source, the first optical member O1, and the second optical member O2 constitute a second light-emitting display unit E2 that displays virtual images F1... Fn. That is, the first optical member O1 and the second optical member O2 serve as both an optical system that forms the real image S1 and an optical system that forms the virtual images F1... Fn. According to this configuration, even when the distance between the first half mirror 3 and the retroreflective sheet 4 is narrow and the actual lifting distance of the real image S1 is small, the virtual image F1... Fn is an image having a depth in the depth direction. In order to be visually recognized, the real image S1 can be clearly recognized as an aerial image, and a three-dimensional illumination effect can be provided. Note that light sources having different luminance and / or color may be used for the first light source 1 and the second light source 2. For example, the luminance of the real image S1 may be larger than the luminance of the first virtual image by making the emission luminance of the second light source smaller (darker) than the emission luminance of the first light source 1.

  FIG. 4 is a conceptual diagram showing a modification of the aerial image display device shown in FIG. In this apparatus, a second half mirror 5 having a reflective surface facing the first half mirror 3 on the front surface side is installed on the front surface side of the retroreflective sheet 4 in the second optical system O2. Multiple reflection of light emitted from the second light source 2 is performed by Fresnel reflection between the first half mirror 3 and the second half mirror 5, and a mirror image on the second half mirror 5 is a virtual image F1. ... visually recognized as Fn. The light emitted from the first light source 1 and reflected by the first half mirror 3 is transmitted through the second half mirror 5 and then retroreflected by the retroreflective sheet 4 to form an aerial image S1. By adjusting the reflectance of the second half mirror 5, the brightness of the virtual images (multiple reflection images) F1... Fn as the background can be adjusted as desired.

  Note that, as indicated by an arrow in FIG. 4, the light emitted from the first light source 1 and reflected by the first half mirror 3 on the surface side is partially reflected by the second half mirror 5, and the first Is reflected again by the half mirror 3 and enters the second half mirror 5. When this light reaches the retroreflective sheet 4 and is retroreflected, a second real image S2 is formed on the real image S1. For example, FIG. 13A shows how the real images S1 and S2 appear when the lid of the cup holder described later is an aerial image display device.

  Although it is possible to design an illumination using a plurality of real images obtained from a two-mirror mirror structure using the configuration shown in FIG. 4, only the first real image S1 is clearly displayed. When it is desired to do so, the unintended visual recognition of the second real image S2 becomes a factor that deteriorates the design.

  FIG. 5A is a conceptual diagram showing still another modification of the optical system of the aerial image display device described in FIG. In this apparatus, a light shielding sheet 6 is further inserted between the second half mirror of the lighting apparatus described with reference to FIG. 4 and the retroreflective sheet 4 and on the retroreflective sheet. By using the light-shielding sheet 6 on the retroreflective sheet, it is possible to limit light incident on the retroreflective sheet 4 and prevent or suppress the visual recognition of the second real image.

  Here, the light shielding sheet 6 is disposed at a position (a position on the second light source 2 side) that is separated from the first light source 1 in order to absorb the light that forms the second real image S2. The range in which the light shielding sheet 6 is disposed on the retroreflective sheet is appropriately set so as not to prevent the real image S1 from being visually recognized and to prevent the second real image S2 from being visually recognized. Since the light shielding sheet 6 on the retroreflective sheet is disposed below the second half mirror 5, the formation of the virtual images F1... Fn by the second half mirror 5 is not affected.

The angle for visually recognizing the real image S1 is limited, and there is no problem when the light shielding sheet 6 on the retroreflective sheet can be appropriately set. However, when the angle range to be visually recognized is relatively wide, the real image S1 is not obstructed to be visually recognized, and In some cases, the second real image S2 cannot be properly arranged so as not to be visually recognized.
FIG. 5B is a schematic cross-sectional view showing a case where the viewing angle is lowered in the aerial image display device having the same configuration as FIG. 5A. As shown in the figure, when the viewing angle is low, the light forming the upper part of the real image S1 is applied to the area of the light shielding sheet 6 on the retroreflective sheet, and the upper part of the real image S1 (the broken line part in the figure) is displayed. Disappear. In that case, for example, as shown in FIG. 13B to be described later, since it is visually recognized that the display is cut off, the design property is remarkably deteriorated.

FIG. 6 shows the light shielding sheet 6 on the retroreflective sheet as a sheet 60 (gradation sheet) in which the light absorption rate changes continuously (or stepwise) in the surface direction. A portion having a low absorption rate (a portion having a high light transmittance) is disposed on the first light source 1 side.
In this configuration, when the viewing angle is lowered, even if the light that forms the upper part of the real image S1 falls on the light absorption region of the light shielding sheet 60 on the retroreflective sheet, the change in the absorption rate is continuous (or stepped). Therefore, the display on the upper part of the real image S1 also attenuates stepwise (becomes dark) as shown in FIG. 13C described later. Therefore, it is possible to prevent or reduce a decrease in designability.

  FIG. 7 is a schematic cross-sectional view showing a configuration in which a light shielding sheet 60 is provided on a retroreflective sheet in the same apparatus as FIG. Even when the half mirror 5 does not exist as shown in FIG. 7, the virtual images F1... Fn of the second light source can be formed by the surface Fresnel reflection of the light shielding sheet 60 on the retroreflective sheet. The effect of preventing or suppressing the visual recognition of the real image 2 can be obtained.

  FIG. 8 is a diagram for explaining still another modification of the optical system of the aerial image display device. Here, light emission from the first light source 1 is performed in the incident direction and first enters the total reflection mirror 7. The light reflected by the total reflection mirror 7 is partially reflected by the first half mirror 3 on the surface side, enters the retroreflective sheet 4, and retroreflects to form the real image S1. 3 to 7, the position where the real image S1 is formed is substantially plane-symmetric with respect to the half mirror 3 of the first light source 1, but in the form of FIG. 8, the real image is located at a higher position. Will be displayed. In this embodiment, the position where the real image S1 is formed is a position that is substantially plane-symmetric with respect to the half mirror 3 of the virtual image f of the first light source 1 generated by the total reflection mirror 7. Here, in order to avoid viewing the total reflection mirror 7, a light shielding layer 8 is laminated on the half mirror 3.

Hereinafter, each member used for the aerial image display device of the present invention will be described.
[light source]
The light source used here is not particularly limited, and it does not interfere with the use of an image display device such as a light bulb or a liquid crystal display. However, a light-emitting diode (LED) can be suitably used under conditions where installation space is limited. For example, a commercially available LED tape may be used as a light source in which a plurality of light emitters are arranged at predetermined intervals. For example, Luchi Co., Ltd. flat flex or Hayashi Telempu LED-ASSY can be used. The same light emitter may be used for the first light source and the second light source, but it is preferable that the real image and the virtual image have different luminance and / or emission color. In the case of displaying a logo or a geometric pattern, a light-shielding member provided with a cutout having a desired shape may be disposed in front of the light source. At this time, the color sheet may be transmitted and colored.

[Half mirror]
As a normal half mirror, a surface obtained by depositing a metal thin film such as tin or silver on the surface of an organic glass such as inorganic glass or acrylic can be used, and a commercially available product may be used. At that time, the reflectance and transmittance of the mirror can be adjusted by the film thickness of the deposited film.

[Retroreflective sheet]
The retroreflective sheet (retroreflective member) reflects incident light in a direction substantially along the optical path. Various types of retroreflective members such as prism-type retroreflective members and microbead-type retroreflective sheets are commercially available. For example, RF-AN manufactured by Nippon Carbide Industries Co., Ltd., Nikka manufactured by Nippon Carbide Industries Co., Ltd. A light EG or the like can be used.

[Shading sheet]
As the light shielding sheet on the retroreflective sheet, a sheet obtained by printing black on the surface of an organic or inorganic transparent member can be used. Moreover, the sheet | seat which disperse | distributed light absorbers, such as carbon particle, can be used in a transparent member, and it can select from a commercial item suitably. At that time, by changing the density of printing or the density of the light absorber, it is possible to obtain a gradation sheet in which the light absorption rate varies continuously or stepwise. In the embodiment shown in FIGS. 5A and 5B, black paper may be used because it does not require surface Fresnel reflection.

  The use of the above-mentioned aerial image display device is not particularly limited, and includes a variety of lighting devices and display devices for interiors and exteriors of vehicles such as vehicles, airplanes, and ships, lighting and interiors of buildings, outdoor lighting and displays, advertisements, etc. It can be applied to various uses. For example, an interior member of a vehicle such as an automobile may be configured to include a lighting device provided with the aerial image display device of the present invention, and in that case, the interior member for installing the lighting device is not particularly limited. For example, a cup holder, an ashtray, a scuff plate, a console box, an overhead console, a glove box, and the like of a vehicle such as an automobile can be provided with such an illumination device. These interior members are provided with a storage space. However, since the virtual image formed by multiple reflection is visually recognized in the depth direction, the shape of the virtual image to be observed depends on the arrangement of the light source and the like. It is also possible to imitate the shape.

  The configuration of the aerial image display device according to the present invention is not limited to that described above, and various modifications can be made. For example, the number of light sources for forming a background image by multiple reflection and the light source for forming an aerial image need not be limited to one each, and a plurality of light sources may be used according to the lighting design. The apparatus shown in FIG. 8 is a modification of the optical system shown in FIG. 3, but as shown in FIGS. 4 to 7, the lower half mirror 5 and the light shielding sheets 6 and 60 on the retroreflective sheet are provided. Also good.

  Hereinafter, a cup holder including an illumination device (aerial image display device) having an aerial image display function will be described as an example of a specific embodiment of an interior member with an illumination device using the aerial image display device according to the present invention. FIG. 9 is a diagram schematically showing the periphery of the driver's seat in the car. Here, pedals and instruments are not shown for simplicity. There is a door trim 10 on the right of the driver's seat 9 and a center console 11 on the left (the left and right may be reversed depending on the position of the handle 12), and a beverage can and a beverage cup 13 are held on the door trim 10 and the center console 11. A cup holder (drink holder) 14 is provided.

  FIG. 10 is a perspective view schematically showing the configuration of the cup holder 14 as an embodiment of the interior member with a lighting device. The cup holder 14 includes a main body 14a having a substantially frustoconical inner surface and a cap (lid) 14c connected to the main body 14a via a hinge 14b in order to store the beverage cup 13 and the like. It is comprised as the illuminating device 15 shown to 9A-9C, and is connected to the power supply (not shown) via the harness 14d.

  FIG. 11A is a diagram illustrating a configuration of a light source unit of the illumination device 15 that configures the cap 14c. The first light source 15a is composed of a plurality of LED light emitters 15b installed on a plate, and its power terminal 15c is connected to the harness 14d via a connector 15d. The second light source 15e is made of a tape in which a plurality of LED light emitters 15f are arranged, and is fixed to the inner peripheral surface of an outer cylinder 15g (made of aluminum in this example), and its power terminal 15h is connected via a connector 15d. It is connected to a harness (power harness) 14d.

  FIG. 11B is a diagram illustrating a state in the middle of assembling of the lighting device 15 that houses the light source. Here, illustration of the connector 15d and the harness 14d is omitted. In the first light source 15a, a light shielding member 15i obtained by cutting out a desired logo mark is installed in a state of being inclined downward, and light emission is performed downward. The second light source 15e is provided with a light shielding member 15j provided with a pattern cutout along the inner peripheral surface of the optical system. A total reflection mirror 15k is installed below the first light source 15a, and a light shielding plate 151 is installed above the first light source 15a in order to avoid viewing the reflected light from the total reflection mirror 15k. A retroreflective sheet 15m is installed closer to the second light source 15e than the total reflection mirror 15k.

  FIG. 11C is a diagram showing a state in which the half mirror 15n is installed on the upper surface of the optical system.

  Using a blue LED as the first light source and a white LED as the second light source, a cap 14c incorporating the optical system shown in 11A to 11C was manufactured and observed. As shown in FIG. A plurality of blue light emission patterns arranged in a ring shape were observed while lowering the brightness downward, and a white logo floated up as an aerial image on the deep background.

  As described above, the second aerial image S2 is darkly observed on the first aerial image S1 of the logo pattern (FIG. 13A), which has the configuration shown in FIGS. 5A to 7. By using a light shielding sheet on the retroreflective sheet, visual recognition can be avoided. At that time, the deterioration of the design property due to the discontinuity of the logo pattern (FIG. 13B) due to the low viewing angle can be avoided by using a light shielding sheet as a gradation sheet (FIG. 13C).

Potential for industrial use

  The aerial image display device of the present invention can be used when an interior member in various vehicles or buildings is used as an interior member with a lighting device, and is used for other purposes such as illumination, display, and advertisement indoors and outdoors. can do. In that case, since the design property with the three-dimensional effect by the combination of a real image and a virtual image can be provided, utilization is high also in the use where the arrangement space of an optical system has restrictions.

1, 15a First light source 2, 15e Second light source 3, 15n Surface side half mirror (first half mirror)
4, 15m Retroreflective sheet 5 Lower half mirror (second half mirror)
6, 60 Light shielding sheet 7, 15k Total reflection mirror 8 Light shielding member 9 Driver's seat 10 Door trim 11 Center console 12 Handle 13 Beverage cup 14 Cup holder 14a Cup holder body 14b Hinge 14c Cap 14d Harness 15 Illumination devices 15b, 15f LED
15g outer cylinder 15c, 15h power supply terminal 15d connector 15l collar 15i, 15j light shielding member E1 first light emitting display E2 second light emitting display F1 to Fn, f virtual image S1, S2 real image

Claims (9)

A first light source;
A second light source;
A first optical member comprising a half mirror disposed on the surface side of the interior member;
A second optical member including at least a retroreflective sheet opposed to the reflective surface of the half mirror,
With the light emitted from the first light source, reflected by the first optical member, and further retroreflected by the retroreflective sheet of the second optical member, a real image is displayed in the air,
A plurality of virtual images are displayed in the background of the real image by light emitted from the second light source and multiple-reflected by Fresnel reflection between the first optical member and the second optical member. It is configured,
Aerial image display device.   The aerial image display device according to claim 1, wherein the second optical member further includes a half mirror disposed on a surface side of the retroreflective sheet, and the virtual image is a half mirror of the second optical member. And an aerial image display device formed by multiple reflection between the first optical member and the half mirror of the first optical member.   The aerial image display device according to claim 1, wherein a light shielding sheet for suppressing light incident on the retroreflective sheet is provided between the half mirror of the second optical member and the retroreflective sheet. An aerial image display device characterized by being arranged.   The aerial image display device according to claim 3, wherein the light shielding sheet for suppressing light incident on the retroreflective sheet is a gradation sheet whose light transmittance changes continuously or stepwise. A feature is an aerial image display device.   5. The aerial image display device according to claim 1, wherein a luminance of the real image is larger than a luminance of the virtual image.   The aerial image display device according to any one of claims 1 to 5, further comprising a total reflection mirror, wherein the light emitted from the first light source is incident on and reflected by the total reflection mirror, An aerial image display device configured to be incident on a half mirror of a first optical member.   The aerial image display device according to any one of claims 1 to 6, further comprising a shielding member disposed on a surface side of the first light source.   An interior member with a lighting device comprising the aerial image display device according to any one of claims 1 to 7 as a lighting device.   The interior member with a lighting device according to claim 8, wherein a storage space is provided inside the interior member, and the plurality of virtual images displayed by the second light emitting display unit are displayed so as to imitate the shape of the storage space. An interior member with a lighting device, wherein