WO2009118897A1

WO2009118897A1 - Display unit

Info

Publication number: WO2009118897A1
Application number: PCT/JP2008/056123
Authority: WO
Inventors: 井本純夫
Original assignee: パイオニア株式会社
Priority date: 2008-03-28
Filing date: 2008-03-28
Publication date: 2009-10-01

Abstract

A display unit and the like which can make effective use of a space present on the lower side of a display, while assuring to provide innovative rendering effects. A display unit S includes a display unit body (10) for displaying specified information, a projective section (22) which is provided at the display unit body (10) to project specified display images, and a transmitting reflector (31) which is arranged on the lean relative to a horizontal surface to reflect the display images and to form virtual images of the display images around the display unit body (10) on a sight line of a user viewing the display unit body (10).

Description

Display device

The present application relates to a display device provided with display image display means for displaying a display image superimposed on a background.

For example, an apparatus using a technique called a head-up display is known as an apparatus that provides predetermined information to a driver who is driving an automobile without changing the direction of the line of sight (for example, Patent Document 1). reference). The apparatus is an apparatus that allows a driver to visually recognize the image by superimposing it on a scene in front by projecting an image such as a character or an image onto a translucent screen installed on a windshield of an automobile.

Such head-up display technology is not limited to the above-mentioned automobile, and is used in various modes. For example, by projecting a predetermined image on a colorless and transparent screen installed in glass of a store or the like using a device such as a projector, it is possible to achieve an effect that cannot exist conventionally.

On the other hand, in recent years, with the development of plasma display panels (hereinafter referred to as “PDP”) and liquid crystal displays (hereinafter referred to as “LCD”), the image display surface having a curved surface using a conventional cathode ray tube has been developed. An image display surface is shifting to a flat flat panel such as a PDP or LCD, and a display body having an image display surface is supported in order to realize an appropriate viewing angle when viewing such a flat panel. It is designed to be installed at a predetermined distance from the lower end of the display body to the floor using a stand.

JP 2004-20345 A

Although the lower end space of such a display body is inappropriate as a viewing angle and not suitable as a main screen as described above, although it is a space necessary to realize an appropriate viewing angle when viewing the display body, Actually, the space is in vain.

In addition, the display device needs to be differentiated from other manufacturers in order to enhance the sales promotion effect, and it is preferable that the added value of the product can be increased using the space.

The present application has been made with the above problem as an example of an object, and is to provide a display device and the like that can effectively increase the added value of a product by effectively utilizing the space existing below the display body.

In order to solve the above problems, an invention according to claim 1 is directed to a display device main body that displays predetermined information, a projection unit that is provided in the display device main body and projects a predetermined display image, and a horizontal plane. A transparent reflector that is arranged on an inclination and is on the line of sight of a user who views the display device body by reflecting the display image and forms a virtual image of the display image around the display device body. It is characterized by having.

1 is an external front view of a PDP device according to an embodiment. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. It is a figure which shows an example of the hardware constitutions of a PDP apparatus. It is a flowchart which shows the example of a display process of a display image.

Explanation of symbols

S PDP device H space 10 display main body 15 stand 22 projection unit 31 reflector 32 tilt control device

Hereinafter, the best embodiment of the present application will be described with reference to the accompanying drawings. The embodiment described below is an embodiment when applied to a PDP device that functions as a display device of the present application. Note that the present application is not limited to the PDP device, and can be appropriately applied to various video display devices such as an LCD device.

-Outline of configuration and functions of PDP device-
First, with reference to FIG. 1 thru | or FIG. 3, the structure and function of the PDP apparatus in this embodiment are demonstrated. FIG. 1 is an external front view of a PDP apparatus according to the present embodiment, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a diagram illustrating an example of a hardware configuration of the PDP apparatus.

As shown in FIGS. 1 and 2, the PDP apparatus S is generally installed on a table or the like, and has a display main body 10 having a video display screen for displaying predetermined information (video etc.). And a stand 15 that supports the display body 10 and is placed on the table.

The display main body 10 includes a display panel 12 that displays predetermined information, and a case main body 13 that covers the periphery and the back surface of the display panel 12. The display panel 12 functions as a video display screen, and the video display screen is formed in a substantially flat shape.

On the other hand, the stand 15 includes a pair of left and right supports 17 that support the case main body 13 and a base 18 that is attached to the lower end surface of the support 17. The support 17 is formed to extend vertically downward from the left and right lower end surfaces of the case body 13, and the base 18 is formed in a substantially rectangular shape and a flat plate shape. The display main body 10 is supported by the base 18 via the support 17 and placed on the table.

In this embodiment, the stand 15 is fixed so that the display panel 12 faces in a certain direction. However, the stand 15 may be rotated so that the display panel 12 can be directed in a predetermined direction. Absent.

As shown in FIGS. 1 and 2, a virtual image 2 of a display image showing predetermined characters and images is formed in the space H between the display body 10 and the stand 15 on the back surface of the display body 10. A display image display device 20 is provided to display the image superimposed on the background.

As shown in FIG. 3, the display image display device 20 is provided with a projection unit 22 for projecting a display image, and a user who views a video or the like displayed on the display panel 12 of the display body 10 from the projection unit 22. A reflection unit 24 that reflects the projected display image, a storage unit 26 that stores the display image, and a reception unit that receives predetermined information (for example, an output signal indicating whether or not the power is turned on) from the display body 10. 25, and a system control unit 27 having a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory) for storing various programs, and the like. Are connected to each other via a system bus 28.

The projection unit 22 is a device that projects a display image such as a predetermined character or image, and can project the display image in the downward vertical direction. Although not shown, the projection unit 22 includes, for example, an image display device that displays a display image, and a light emitting element such as a VFD (fluorescent display tube) or a fluorescent lamp that irradiates the display image with light. Then, the display image is projected onto the reflector 30 by irradiating the display image with light.

On the other hand, the reflection unit 24 includes a reflector 31 that reflects the display image and an inclination control device 32 that changes the inclination angle of the reflector 31 with respect to the installation surface. The reflector 31 is arranged to be inclined below the display image display device 20 and reflects the display image from between the display body 10 and the table stand 15 to the viewer side. Then, a virtual image 2 of the display image is formed in the space H.

Although not shown, the tilt control device 32 includes a drive motor having a rotation mechanism that is rotationally controlled based on an instruction from the system control unit 27, and an axis that intersects the reflector 31 with the user's line of sight using the drive motor. The angle of inclination with respect to the horizontal plane can be adjusted by rotating around the axis.

The inclination angle of the reflector 31 varies depending on the viewer's eyes, the installation position of the display body 10 and the like, and thus cannot be specified unconditionally, but is preferably about 35 ± 7 degrees, more preferably 35 degrees to 45 degrees. Set to

For the reflector 31, for example, a transmissive plate material is used, and a member generally called a PC (polycarbonate) plate is used. Further, a plate material having a plate thickness of about 0.1 mm to 1 mm, more preferably about 0.5 mm is used.

In addition, as a result of conducting an experiment on the display mode of the virtual image 2 of the display image depending on the material, thickness, or inclination angle of the plate material used for the reflector, the floating feeling of the display image is increased by using the transparent plate material. Was confirmed. Further, it was confirmed that the multiple reflection of the display image was made inconspicuous by using a PC plate having a thickness of about 0.5 mm to 1 mm. If the plate thickness is less than this value, the plate material is likely to bend, so that the display image is difficult to visually recognize. If the plate thickness is more than this value, a problem may occur in which the display image is difficult to visually recognize due to multiple reflection. Based on such a result, in this embodiment, a PC plate having a thickness of 0.5 mm is used, and when the inclination angle of the PC plate is changed between 35 and 45 degrees with respect to the horizontal plane, the display image is more Confirmed that it is clearly displayed.

The system control unit 27 controls the entire display image display device 20 by the CPU reading and executing various programs stored in the ROM.

Specifically, the system control unit 27 detects an output signal of the display main body 10, starts a predetermined program, and projects a predetermined display image based on the detection result.

For example, when the system control unit 27 receives the output signal of the display main body 10, the system control unit 27 reads out a display image (for example, a character “currently displaying a video”) stored in the storage unit 26 and projects it. The display image is projected onto the reflector 31 by the unit 22. In general, since the PDP device S requires a predetermined time from when the power is turned on until the image is displayed on the display panel 12, for example, a character such as “Currently displaying image is being processed” is included. By displaying the display image, the viewer can clearly recognize that the power is turned on.

For example, the system control unit 27 receives the output signal of the display body 10 and switches the display image to another display image (for example, a company name) stored in the storage unit 26 after a predetermined time has elapsed. Then, the display unit 22 projects the display image onto the reflector 31.

The PDP device S configured as described above displays a virtual image 2 of a display image in a space between the display main body 10 and the stand 15 and is displayed so that a predetermined display image floats over the background. Therefore, since the display image floats in a space where nothing can exist, it is possible to give a novel effect to the user. In addition, it is possible to enhance the presentation effect for the viewer by switching to a display image having a different display mode according to the operating state or display state of the display main body 10.

The reflector 31 includes a sensor for detecting the position of the viewer's pupil, and when the display image is displayed, the display image projected from the projection unit 22 based on information obtained by the sensor is the reflector 31. The tilt angle of the reflector 31 may be automatically controlled so as to coincide with the direction of reflection through the reflector. In this way, it is possible to display a virtual image of the display image appropriately according to the viewer watching the television, which is convenient.

Further, the tilt angle of the reflector 31 may be freely controlled by an operation (remote control) on the viewer side. In this way, the display image can be appropriately displayed on the user side.

Furthermore, an illuminance sensor for detecting the illuminance around the display main body 10 is provided, the detection signal of the illuminance sensor is received using the receiving unit 25, and the system control unit 27 is irradiated from the projection unit 22 based on the detection signal. The brightness of the display image may be controlled by controlling the degree of light. This makes it possible to appropriately adjust the brightness of the display image according to the brightness around the display body 10.

In the above embodiment, the display image is read from the storage unit 26. However, for example, metadata received by the display main body 10 may be used as the display image. For example, the metadata is received by the receiving unit 25, and information about the program (program name, contents, etc.) is extracted from the metadata shortly before the program to be displayed on the display panel is started, and the information is displayed. It may be displayed as an image.

-Display image display operation-
Next, a display image display operation will be described with reference to FIG. FIG. 4 is a flowchart showing an example of display image display processing. It is assumed that the display image display device 20 is activated or disconnected in accordance with an output signal (power ON / OFF) of the display main body.

First, the system control unit 27 of the display image display device 20 receives an output signal indicating the power ON / OFF state of the display main body 10 at the receiving unit 25, determines whether the power is turned ON, If the determination is affirmed, the process proceeds to the next process, and if the determination is denied, the process waits until the power is turned on (step S11).

Next, the system control unit 27 extracts a display image including a predetermined character group from the storage unit 26 based on a predetermined program, and projects the display image on the reflector 31 by the projection unit 22 (step S12). . The display image is inverted, and is reflected once by the reflector 31 and reflected to the viewer side as an appropriate display image, and the virtual image 2 is formed in the space H.

Next, the system control unit 27 determines whether or not a predetermined threshold time (for example, 35 seconds) has elapsed. If this determination is affirmed, the system control unit 27 proceeds to the next process and is denied. For example, the process waits until the threshold time has elapsed (step S13). For example, the threshold value defines the time from when the power of the display body 10 is turned on until when a predetermined image is actually displayed on the display panel 12.

Next, after a predetermined threshold time has elapsed (while an image is being displayed on the display main body 10), the system control unit 27 defines the display image from the storage unit 26 based on a predetermined program. Another different display image is read out, and the other display image is projected onto the reflector 31 by the projection unit 22 (step S14).

The display image may be information using metadata. In that case, the system control unit 27 generates a display image using the metadata received by the reception unit 25, and projects the display image onto the reflector 31 by the projection unit 22. Note that what information (for example, program name and contents) is extracted from the metadata and displayed as a display image needs to be defined in advance.

Next, the system control unit 27 determines whether or not the power of the display main body 10 is turned off based on the output signal received by the receiving unit 25. If this determination is affirmed, the system control unit 27 proceeds to the next process. If the result is negative, the system waits until the power is turned off (step S15).

Next, the system control unit 27 sets a predetermined threshold value (for example, 15 seconds) so as to turn off the power of the display image display device 20 after a predetermined time has elapsed, and the power is turned on based on a predetermined program. A display image to be displayed after being cut (for example, a character composed of Good-By indicating the end of display) is read from the storage unit 26 and projected by the projection unit 22 onto the reflector 31 (step S16). ).

Next, the system control unit 27 determines whether or not a threshold time has elapsed. If this determination is affirmative, the system control unit 27 turns off the power of the display image display device 20 and ends the process. If so, the process waits until a predetermined time elapses (step S17).

As described above, the PDP apparatus S of the present embodiment has a display body 10 that displays predetermined information, and a stand that supports the display body 10 so as to have a predetermined space H below the display body 10. 15, provided on the back surface of the display main body 10, a projection unit 22 that projects a predetermined display image, and reflects the display image on the user's line of sight, And a reflector 31 that forms the virtual image 2 of the display image in the space H.

The PDP device S configured as described above displays a virtual image 2 of a display image in a space between the display main body 10 and the stand 15 and is displayed so that a predetermined display image floats over the background. Therefore, since the display image floats in a space where nothing can exist, it is possible to give a novel effect to the user. In addition, since it can be manufactured using existing materials and devices, a display device can be easily manufactured at low cost.

In addition, this application is not limited to this embodiment, It is possible to implement in various forms. For example, in the above embodiment, the display image display device 20 is provided on the back surface of the display main body 10, but may be provided inside the display main body 10 or provided on the stand 15 side. I do not care. When the display image display device 20 is provided inside the display main body 10, the display image can be projected downward from the lower end of the display main body 10, so that the reflector 31 is disposed below the display main body 10. . In this way, aesthetics can be improved.

The display image is displayed in the space between the display main body 10 and the stand 15, but the display image display device 20 is changed in the attachment position to a partial area around the display main body 10. It may be displayed. Further, for example, the content of the display image may be changed depending on the presence or absence of an output signal output from the display main body 10.

Claims

A display device main body for displaying predetermined information;
A projection unit provided in the display device main body, for projecting a predetermined display image;
A transparent reflector that is arranged with an inclination with respect to a horizontal plane and that is on the line of sight of a user who views the display device body by reflecting the display image and forms a virtual image of the display image around the display device body When,
A display device comprising:
A stand for supporting the display device body so as to have a predetermined space below the display device body;
The display device according to claim 1, wherein the virtual image is formed in the space.
The display device according to claim 1, further comprising a reflector tilting unit that rotates around the axis intersecting with the line of sight of the user to tilt the reflector with respect to a horizontal plane. .
Comprising a sensor for detecting the position of the user's pupil;
Tilt angle control means for controlling the tilt angle of the reflector so that the virtual image is displayed in the direction of the user's line of sight based on a detection signal of the sensor;
The display device according to claim 3, further comprising:
A sensor for detecting ambient illuminance;
Brightness control means for controlling the brightness of the virtual image based on the detection signal of the sensor;
The display device according to claim 1, further comprising:
6. The display according to claim 1, wherein a material of the reflector is a transparent PC plate, and a thickness of the reflector is in a range of 0.1 mm to 1 mm. apparatus.
The display device according to claim 2, wherein an inclination angle of the reflector is in a range of 35 to 45 degrees with respect to a horizontal plane.