WO2005119357A1

WO2005119357A1 - Image projector

Info

Publication number: WO2005119357A1
Application number: PCT/JP2005/009940
Authority: WO
Inventors: Takashi Kuwabara; Tomoo Hori
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2004-06-02
Filing date: 2005-05-31
Publication date: 2005-12-15
Also published as: JP2005345679A

Abstract

An on-vehicle mounted image projector (10) comprises a projector (20) for projecting an image, a screen (30) to which an image is projected and which is formed integrally with the projector (20) in such a manner that the relative position to the projector (20) can be altered, an open/close detecting section (40) for detecting the position of the screen (30) with respect to the projector (20), and an image adjusting section for regulating the image for the screen (30) depending on the position of the screen (30) detected by the open/close detecting section (40). With such an arrangement, the on-vehicle mounted image projector (10) can project an image from the projector (20) to the screen (30) without automatically rotating the projector (20) with respect to the screen (30).

Description

Specification

Image projection device

Technical field

The present invention relates to an image projection device that projects an image from a projector onto a screen.

Background art

[0002] As a conventional image projection device, after a projector recognizes the position of a screen based on a signal of a sensor force provided on the screen, the projector automatically moves in an appropriate direction based on the recognized position of the screen. A rotating object is known (for example, see Patent Document 1).

Patent Document 1: JP-A-10-301200 (page 5, FIG. 8)

Disclosure of the invention

Problems to be solved by the invention

[0003] However, in the conventional image projection apparatus, since the projector and the screen are installed separately, there is a problem that the projector must be automatically rotated with respect to the screen. there were.

[0004] The present invention has been made to solve the conventional problem, and an image projection apparatus capable of projecting an image on a screen with the power of a projector without automatically rotating the projector with respect to the screen. The purpose is to provide.

Means for solving the problem

[0005] An image projection apparatus according to the present invention includes a projector that projects an image, an integrated screen that is formed integrally with the projector so that a position with respect to the projector can be changed, and that projects the image, and a projector that projects the image. An integrated screen position detecting means for detecting a position of the integrated screen; and an image adjusting means for adjusting the image for the integrated screen in accordance with the position of the integrated screen detected by the integrated screen position detecting means. It has a configuration!

[0006] With this configuration, in the image projection device of the present invention, the projector and the integrated screen are integrated. Therefore, the image can be projected from the projector to the integrated screen without automatically rotating the projector with respect to the integrated screen.

[0007] Further, in the image projection device of the present invention, the image adjustment means may be configured to display the image on the integrated screen only when the position of the integrated screen detected by the integrated screen position detection means is a predetermined position. May be adjusted.

[0008] With this configuration, the image projection device of the present invention allows the user to manually adjust the image for the integral screen when the position of the integral screen with respect to the projector is other than the predetermined position, for example. Can be.

[0009] Further, the image projection apparatus of the present invention includes a power control unit that controls supply of power to the projector in accordance with the position of the integrated screen detected by the integrated screen position detection unit. May be provided.

[0010] With this configuration, the image projection apparatus of the present invention supplies power to the projector only by changing the position of the integrated screen with respect to the projector, so that it is possible to improve the user's use and convenience.

[0011] Further, the image projection apparatus of the present invention includes an operation unit operated by a user, and the image adjustment unit is configured to display the image on the integrated screen in accordance with a user operation on the operation unit. May be adjusted.

[0012] With this configuration, the image projection device of the present invention adjusts the image for the integrated screen according to the user's operation on the operation means, so that the usability of the user can be improved.

[0013] Further, the image projection apparatus of the present invention includes an operation unit operated by a user, and a power control unit for controlling supply of power to the projector in accordance with a user operation on the operation unit. May be provided.

[0014] With this configuration, the image projection device of the present invention controls the supply of power to the projector in accordance with the user's operation on the operation means, so that the usability of the user can be improved.

[0015] Further, the image projection device of the present invention includes an operation unit operated by a user, and an operation of the integrated screen with respect to the projector in accordance with an operation of the operation unit by the user. It may have a configuration provided with integrated screen position changing means for changing the position.

[0016] With this configuration, the image projection device of the present invention changes the position of the integrated screen with respect to the projector according to the user's operation on the operation means, thereby improving the usability of the user.

[0017] Further, the image projection apparatus of the present invention includes a separate screen formed separately from the projector and onto which the image is projected, and the separate screen is provided at a position where the image is projected by the projector. The projector may have a configuration in which the image is projected by the projector when the integrated screen is located at a position other than the above.

[0018] With this configuration, the image projection device of the present invention uses a mode in which the user views the image projected on the integral screen by one projector, and a method in which the image projected on the separate screen is used. It can be used in two modes, that is, a mode in which the user can watch the movie.

Further, the image projection device of the present invention has a configuration in which the image adjusting means adjusts the image for the separate screen in accordance with the position of the integrated screen detected by the integrated screen position detecting means. You may have.

[0020] With this configuration, the image projection device of the present invention automatically adjusts the image for the separate screen according to the position of the integrated screen with respect to the projector, so that the user can adjust the image for the separate screen. Can be omitted.

Further, the image projection device of the present invention includes separate screen position detecting means for detecting a position of the separate screen with respect to the projector, and the image adjusting means is detected by the separate screen position detecting means. Further, a configuration may be provided in which the image is adjusted for the separate screen in accordance with the position of the separate screen.

With this configuration, the image projection device of the present invention automatically adjusts the image for the separate screen according to the position of the separate screen with respect to the projector. You can save time and effort.

[0023] In the image projection device of the present invention, the image adjusting means may separate the image into the separate object only when the position of the integrated screen detected by the integrated screen position detecting means is a predetermined position. You may have the structure adjusted for a screen.

[0024] With this configuration, the image projection device of the present invention provides an integrated screen with respect to the projector. When the position is a position other than the predetermined position, for example, the user can manually adjust the image for the separate screen.

[0025] Further, in the image projection device of the present invention, the image adjustment unit may be configured to display the image only when the position of the separate screen detected by the separate screen position detection unit is a predetermined position. You may have the structure adjusted for a separate screen.

With this configuration, when the position of the separate screen with respect to the projector is at a position other than the predetermined position, the image projection device of the present invention can manually adjust the image for the separate screen, for example, to the user. Can be done.

[0027] The image projection apparatus of the present invention further includes a power control unit that controls supply of power to the projector in accordance with the position of the separate screen detected by the separate screen position detection unit. May be provided.

[0028] With this configuration, in the image projection apparatus of the present invention, power is supplied to the projector only by changing the position of the separate screen with respect to the projector. .

[0029] Further, the image projection apparatus of the present invention has an operation unit operated by a user, and a separate unit for changing a position of the separate screen with respect to the projector in accordance with a user operation on the operation unit. You may have the structure provided with the screen position change means.

[0030] With this configuration, the image projection device of the present invention changes the position of the separate screen with respect to the projector according to the user's operation on the operation means, so that the usability of the user can be improved.

[0031] Further, the image projection device of the present invention includes a reflection member that reflects the image projected by the projector toward the separate screen, wherein the integrated screen is a rear projection type screen, The separate screen may have a configuration that is a reflective screen.

[0032] With this configuration, the image projection device of the present invention can reduce the space required for viewing as compared with the case where both the integral screen and the separate screen are of the rear projection type.

[0033] Further, in the image projection device according to the present invention, the position of the reflection member with respect to the projector may be different. A reflecting member position detecting means for detecting the position of the reflecting member detected by the reflecting member position detecting means, wherein the image adjusting means adjusts the image for the separate screen. You may.

[0034] With this configuration, the image projection apparatus of the present invention automatically adjusts the image for the separate screen according to the position of the reflection member with respect to the projector, so that the user can adjust the image for the separate screen. Can be omitted.

[0035] Further, the image projection apparatus of the present invention has a configuration including a reflecting member position changing unit that changes the position of the reflecting member with respect to the projector in accordance with the position of the separate screen with respect to the projector. May be.

[0036] With this configuration, the image projection device of the present invention changes the position of the reflection member with respect to the projector according to the position of the separate screen with respect to the projector, so that the use and convenience of the user can be improved.

[0037] Further, the vehicle of the present invention may have a configuration in which an image projection device is provided on at least one of the inner ceiling and the back of the inner seat.

[0038] With this configuration, the vehicle of the present invention allows a user to use the image projection device for ornamental viewing inside the vehicle.

[0039] Further, the vehicle of the present invention includes an image projection device on an internal ceiling in a state where the projector projects the image in a rear direction, and the integrated screen and the separate screen include a rear projection. It may have a configuration that is a screen of a type.

[0040] With this configuration, the vehicle of the present invention allows the user to use the image projection device by switching between viewing inside the vehicle and viewing outside the vehicle with one projector.

[0041] The vehicle of the present invention may have a configuration in which an image projection device is provided on an internal ceiling in a state where the direction in which the projector projects the image is backward.

[0042] With this configuration, the vehicle of the present invention uses the image projection device by switching between viewing for the front seat inside the vehicle and viewing for the rear seat inside the vehicle with one projector. Can be used by others.

The invention's effect The present invention can provide an image projection device that can project an image from a projector onto a screen without automatically rotating the projector with respect to the screen.

Brief Description of Drawings

[FIG. 1] (a) Appearance perspective view of an in-vehicle video projection device according to a first embodiment of the present invention in a state where a screen is unfolded (b) A view in a state where a screen is stored 1 External perspective view of the on-board video projector shown in (a)

[FIG. 2] A side view of a vehicle equipped with the vehicle-mounted image projection device shown in FIG.

FIG. 3 is a side sectional view of a part of the vehicle-mounted image projection device shown in FIG. 1

[FIG. 4] A block diagram of the vehicle-mounted image projection device shown in FIG.

[FIG. 5] A side view of a vehicle equipped with the vehicle-mounted image projection device shown in FIG. 1 in a state different from the state shown in FIG. 2

FIG. 6 is a perspective view of a front seat of a vehicle equipped with the on-vehicle image projection device shown in FIG. 1 in a state different from the states shown in FIGS. 2 and 5;

FIG. 7 is a block diagram of an in-vehicle video projection device according to a second embodiment of the present invention.

FIG. 8 is a block diagram of an in-vehicle video projection device according to a third embodiment of the present invention.

FIG. 9 is a block diagram of an in-vehicle video projection device according to a fourth embodiment of the present invention.

FIG. 10 is a side view of a vehicle equipped with an in-vehicle image projection device according to a fourth embodiment of the present invention in a state where a screen for viewing by a user sitting on a rear seat in the vehicle is deployed.

[FIG. 11] A side view of a vehicle equipped with the on-board video projection device shown in FIG. 10 in a state where a screen for user viewing outside the vehicle is unfolded.

FIG. 12 is a side view of a vehicle mounted with the on-vehicle image projection device according to the fifth embodiment of the present invention, in a state where a screen for viewing of a user sitting on a rear seat in the vehicle is deployed.

[FIG. 13] A side view of a vehicle equipped with the on-vehicle image projection device shown in FIG. 12 in a state where an ornamental screen for a user sitting in a front seat in the vehicle is deployed.

Explanation of reference numerals [0045] 10 In-vehicle video projection device (image projection device)

20 Projector

24 Video generator (image adjustment means)

28 Focal length adjustment unit (image adjustment means)

30 screens (one screen)

40 Open / close detection unit (Integrated screen position detection means, reflection member position detection means) 50 Projector

51 Power control unit (power control means)

61 Controls

62 Opening / closing part (integral screen position changing means)

70 In-vehicle video projector (image projector)

81 screen (separate screen)

90 Open / close detection unit (separate screen position detection means)

100 reflective material

190 vehicles

191 Ceiling

193 Front seat (seat)

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)

First, the configuration of the image projection device according to the first embodiment will be described.

As shown in FIGS. 1 to 3, an in-vehicle video projection device 10 as an image projection device according to the present embodiment includes a projector 20 having a projection unit 21 for projecting an image, and a projector 20 A rear-projection screen 30 as an integrated screen that is formed integrally with the projector 20 to project an image so that the position can be changed, and an opening and closing as an integrated screen position detection unit that detects opening and closing of the screen 30 with respect to the projector 20 A detection unit 40 is provided, and the ceiling 191 in the vehicle 190 is installed in a state where the direction in which the projector 20 projects an image is behind the vehicle 190. [0049] Projector 20 has fixed portion 22 in which hole 22a is formed and which serves as the center of rotation of screen 30 in the direction indicated by arrow 30a. Also, as shown in FIG. 4, the projector 20 generates a light source unit 23 for generating light for an image projected by the projection unit 21 and generates an image signal of the image projected by the projection unit 21. An image generation unit 24, an illumination optical system unit 25 for efficiently using light emitted from the light source unit 23, a projection image forming unit 26 for forming an image projected by the projection unit 21, a light source unit 23, A power input unit 27 for supplying power to the image generation unit 24 and the projection image formation unit 26; and a focal length adjustment unit 28 as image adjustment means for adjusting an image to be formed on the projection screen S screen 30. I have. Here, the projection unit 21 includes a plurality of lenses. The light source unit 23 includes a lamp such as a metal halide lamp and a high-pressure mercury lamp, a lighting circuit for lighting the lamp, a reflector for projecting light from the lamp forward, and the like. The illumination optical system section 25 is composed of, for example, a dichroic mirror and an optical integrator optical system. Further, the projected image forming section 26 transmits or blocks the light from the light source section 23 based on the image signal generated by the video generating section 24 so as to form an image projected from the projecting section 21. And is constituted by a liquid crystal panel.

As shown in FIG. 2, screen 30 is an ornamental screen for a user sitting in rear seat 192 in vehicle 190. Further, as shown in FIG. 3, the screen 30 has an insertion hole 31 into which the fixing portion 22 of the projector 20 is inserted, and grooves 32, 33 arranged in a part of the insertion hole 31. . Note that, as shown in FIG. 1A, a state in which the screen 30 is opened with respect to the projector 20 and the screen 30 is at a position where an image can be projected by the projection unit 21 of the projector 20 is called an unfolded state. The state where the screen 30 is closed with respect to the projector 20 as shown in FIG.

As shown in FIG. 3, the open / close detection unit 40 includes a projection 41 inserted into the hole 22 a of the fixing unit 22 of the projector 20, and a groove 32 of the screen 30 from the fixing unit 22 side of the projector 20. , 33, a spring portion 42 for urging the projection 41, a contact portion 43 attached to the tip of the projection 41, and a contact portion 44 attached to the groove 32 of the screen 30. .

Next, the operation of the vehicle-mounted image projector 10 will be described.

When the power of the projector 20 is turned on, power is supplied from the power input unit 27 and the The projector 20 projects an image.

Here, when the screen 30 is rotated by the user in the direction indicated by the arrow 30a and the screen 30 is deployed in the state shown in FIG. 2, the screen 30 is urged by the spring portion 42 of the open / close detection unit 40. The projection 41 enters the groove 32 of the screen 30, the rotation of the screen 30 with respect to the projector 20 is stopped, and the screen 30 is fixed to the projector 20.

When the projection 41 of the opening / closing detection unit 40 enters the groove 32 of the screen 30, the contact unit 43 and the contact unit 44 contact each other as shown in FIG. The opening / closing detection unit 40 detects that the screen 30 has been deployed.

When the detection information output by the open / close detection unit 40 is input, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21 so that the image projected by the projector 20 is formed on the screen 30. . Therefore, a user sitting in the backseat 192 in the vehicle 190 can watch the image on the screen 30.

As described above, since the projector 20 and the screen 30 are separate bodies, the on-vehicle video projector 10 can be moved from the projector 20 to the screen without automatically rotating the projector 20 with respect to the screen 30. 30 images can be projected.

Further, in the in-vehicle video projection device 10, the adjustment of the image such as the focal length of the projector 20 is performed only by developing the stored state force of the screen 30, so that the user can save time and effort.

[0059] The power supplied to the projector 20 may be supplied from an external source of the projector 20, or may be supplied from the projector 20 provided with a primary battery or a secondary battery. The method of supplying power to the projector 20 is not limited to these.

The focal length adjustment unit 28 may be supplied with power from the power input unit 27, or may be supplied with power that is independent of the power input unit 27. In the latter case, when the power of the projector 20 is turned on and the screen 30 is unfolded and the screen 30 is unfolded, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21, that is, the focal length. It may be adjusted.

When the opening / closing detection unit 40 does not detect that the screen 30 is expanded because the screen 30 is also rotated in the unfolded state and the retracted state, the focal length adjustment unit 28 The automatic focus adjustment function is turned off, and the user can manually adjust the lens position of the projection unit 21, that is, the focal length.

The structure in which the screen 30 is supported by the projector 20 is not limited to that shown in FIG. 3, and the screen 30 is stable in the stored state and the expanded state, and detects either the stored state or the expanded state. What is necessary is just to have the structure which can be performed. In addition, a structure that can fix the screen 30 at an arbitrary angle may be provided.In this case, by providing a mechanism for detecting the installation angle of the screen 30, the image generation unit 24 can be configured according to the installation angle of the screen 30. The generated image may be subjected to keystone correction.

[0063] Further, the projector 20 is not limited to these, but may have a liquid crystal panel, or may have a DMD (Digital Micro mirror Device). Also, in the internal structure of the projector 20, the projection unit 21, the image generation unit 24, the illumination optical system unit 25, and the projection image formation unit 26 have been shown as components for projecting an image, but the image is projected as a whole. The preferred configuration is not limited to this.

[0064] Further, since the in-vehicle video projector 10 has a structure in which the projector 20 and the screen 30 are integrated, there is a high degree of freedom in the installation position. For example, the in-vehicle video projector 10 uses a reflective screen as the screen 30 so that the projector 20 projects an image in the ceiling of the vehicle 190 in a state in which the image is projected in front of the vehicle 190 as shown in FIG. 191 can also be installed. Further, the in-vehicle video projector 10 can be installed on the back of the front seat 193 of the vehicle 190 as shown in FIG. The position where the in-vehicle video projector 10 is installed is not limited to these. Further, a light-shielding plate may be provided around the screen 30 so that the light projected by the projector 20 does not directly enter the user's eyes.

(Second Embodiment)

First, the configuration of the image projection device according to the second embodiment will be described.

[0066] Among the configurations of the image projection apparatus according to the present embodiment, the same configuration as the configuration of the image projection apparatus according to the first embodiment is the same as the configuration of the image projection apparatus according to the first embodiment. The same reference numerals as in the above configuration are used, and detailed description is omitted.

As shown in FIG. 7, the configuration of the in-vehicle video projector as the image projector according to the present embodiment is the same as that of the first embodiment except that projector 50 is replaced with projector 20 (see FIG. 4). The configuration is the same as that provided in the in-vehicle video projector 10 (see FIG. 1) according to the first embodiment.

[0068] The configuration of projector 50 is the same as the configuration in which projector 20 includes power supply control unit 51 as power control means for controlling power input from the outside.

Here, the power supply input section 27 supplies the power supplied from the power supply control section 51 to the light source section 23, the video generation section 24, and the projection image formation section 26.

[0070] The power control unit 51 supplies power to the power input unit 27 when the open / close detection unit 40 detects that the screen 30 has been deployed.

Next, the operation of the vehicle-mounted image projection device according to the present embodiment will be described.

When the screen 30 is expanded by the user and the opening / closing detection unit 40 detects that the screen 30 is expanded, the power control unit 51 transmits the power to the power input unit in accordance with the detection information output by the opening / closing detection unit 40. Supply power to 27.

Then, the power input unit 27 supplies the power supplied from the power control unit 51 to the light source unit 23, the video generation unit 24, and the projection image forming unit 26.

As described above, in the in-vehicle video projection device according to the present embodiment, the power of the entire device is turned on just by developing the screen 30 in the retracted state, and conversely, the screen 30 is moved to the expanded state. By simply turning off the power of the entire device, the use and operability of the user can be improved.

The focal length adjustment unit 28 may be supplied with power from the power input unit 27, or may be supplied with power independent of the power input unit 27. In the former case, the detection information from the open / close detection unit 40 is not input to the focal length adjustment unit 28, and the focal length adjustment unit 28 adjusts the focal length when power is supplied from the power input unit 27. It may be.

Further, when the screen 30 is rotated to the unfolded state and the force is also stored, and the opening / closing detection unit 40 does not detect that the screen 30 is expanded, the power supply from the power control unit 51 is stopped. The projector 50 is turned off and turned off! /

(Third Embodiment)

First, the configuration of the image projection device according to the third embodiment will be described.

[0078] Among the configurations of the image projection apparatus according to the present embodiment, the configuration according to the second embodiment is described. About the structure similar to the structure of the image projection apparatus, the same code | symbol as the structure of the image projection apparatus which concerns on 2nd Embodiment is attached | subjected, and detailed description is abbreviate | omitted.

As shown in FIG. 8, the configuration of the vehicle-mounted video projection device as the image projection device according to the present embodiment has a switch for operating the power on and power off of the entire device. An operating means 61, an opening / closing section 62 as a means for changing the position of an integrated screen for storing or deploying the screen 30, and a focal length adjusting section 28, a power control section 51, and an opening / closing section based on operation information input from the operating means 61 The configuration is the same as that of the in-vehicle video projection device according to the second embodiment, in which the operation information processing unit 63 that controls the operation of 62 is replaced with the open / close detection unit 40 (see FIG. 7).

Next, the operation of the in-vehicle video projection device according to the present embodiment will be described.

When the operation unit 61 outputs operation information for turning on the power of the entire apparatus, the operation information processing unit 63 transfers the operation information to the focal length adjustment unit 28, the power supply control unit 51, and the opening / closing unit 62.

Then, the power control unit 51 supplies power to the power input unit 27 according to the operation information from the operation information processing unit 63. The opening / closing unit 62 controls the screen 30 to be expanded according to the operation information from the operation information processing unit 63. Further, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21 so that an image is formed on the screen 30 according to the operation information from the operation information processing unit 63. Therefore, a user sitting in the backseat 192 in the vehicle 190 can watch the image on the screen 30.

As described above, the in-vehicle video projection device according to the present embodiment adjusts an image for screen 30 in accordance with a user's operation on operation means 61, and supplies power to projector 50. Since the supply is controlled and the position of the screen 30 with respect to the projector 50 is changed, the usability of the user can be improved.

The focal length adjustment unit 28 may be supplied with power from the power input unit 27, or may be supplied with power that is independent of the power input unit 27. In the former case, the operation information from the operation information processing unit 63 is not input to the focal length adjustment unit 28, and the focal length adjustment unit 28 adjusts the focal length when power is supplied from the power input unit 27. It may be so. Although the operation information processing section 63 is independent of the projector 50 and the operation means 61 in FIG. 8, it may be arranged in the projector 50 or the operation means 61. Operation The position where the information processing unit 63 is arranged is not limited to these.

[0086] The operation means 61 may be a wireless remote controller that outputs operation information using infrared rays or the like.

Further, the transfer destination to which the operation information processing unit 63 transfers the operation information may be any one or any two of the focal length adjustment unit 28, the power supply control unit 51, and the opening / closing unit 62. In this case, the component to which the operation information is not transferred only needs to be manually operated by the user.

(Fourth Embodiment)

First, the configuration of the image projection device according to the fourth embodiment will be described.

[0089] In the configuration of the image projection apparatus according to the present embodiment, the same configuration as the configuration of the image projection apparatus according to the first embodiment is the same as the configuration of the image projection apparatus according to the first embodiment. The same reference numerals as in the above configuration are used, and detailed description is omitted.

As shown in FIG. 9 to FIG. 11, the configuration of the vehicle-mounted image projection device 70 as the image projection device according to the present embodiment is different from that of projector 20 in that it is formed separately from projector 20 to project an image. A rear projection type screen 81 as a clean, a storage section 82 that is mounted behind the ceiling 191 in the vehicle 190 and winds and stores the screen 81, and a separate screen that detects the opening and closing of the screen 81 with respect to the projector 20 This is the same as the configuration in which the in-vehicle video projector 10 (see FIG. 1) according to the first embodiment includes a hook-type open / close detector 90 as a position detector.

[0091] Here, the video generation unit 24 generates an image signal of the video projected by the projection unit 21, and corrects the trapezoid of the generated image as necessary. The focal length adjusting unit 28 adjusts the projected image power so as to form an image on the S screen 30 or the screen 81. That is, the video generation unit 24 and the focal length adjustment unit 28 constitute an image adjustment unit.

[0092] The screen 81 is an ornamental screen for a user outside the vehicle 190.

[0093] Further, the open / close detection unit 90 detects whether or not the screen 81 is unfolded, and detects the detection information. Is output to the video generation unit 24 and the focal length adjustment unit 28.

[0094] Next, the operation of the in-vehicle video projector 70 will be described.

When the screen 30 is deployed as shown in FIG. 10, the opening / closing detection unit 40 detects that the screen 30 has been deployed and outputs detection information to the focal length adjustment unit 28. The unit 28 adjusts the lens position of the projection unit 21 so that an image is formed on the image power screen 30 projected by the projector 20. Therefore, the user sitting on the backseat 192 in the vehicle 190 can watch the image on the screen 30.

On the other hand, as shown in FIG. 11, the screen 30 is housed, and the screen 81 is taken out of the housing part 82 by the user and provided at the lower end of the screen 81, as shown in FIG. When hooked on 90, the opening / closing detection unit 90 detects that the screen 81 has been expanded, and outputs detection information to the video generation unit 24 and the focal length adjustment unit 28. Then, upon input of the detection information from the opening / closing detection unit 90, the video generation unit 24 corrects the trapezoid of the generated image so that the shape of the image projected by the projector 20 is correctly rectangular on the S screen 81. Further, when the detection information from the open / close detection unit 90 is input, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21 so that the image projected by the projector 20 is formed on the screen 81. Therefore, a user outside the vehicle 190 can also watch the image on the screen 81 with the rearward force of the vehicle 190 with the back door 194 of the vehicle 190 opened.

[0097] As described above, the on-vehicle image projection device 70 is provided with a single projector 20 for viewing a user sitting on the rear seat 192 in the vehicle 190 and viewing the image for a user outside the vehicle 190. It can be used by switching between The in-vehicle image projection device 70 is used to adjust the focal length when the user sits in the rear seat 192 in the vehicle 190 and when the user outside the vehicle 190 views. Also, since the keystone correction is performed automatically, the user's labor can be saved.

[0098] The method by which the separate screen position detecting means detects that the screen 81 has been expanded is not limited to the method described above. For example, a separate screen position detecting means is attached to the rear seat 192, and by detecting that the rear seat 192 is tilted to project an image on the screen 81, it is determined that the screen 81 is opened. The body screen position detecting means may detect it. Also, separate screen position detection The steps are arranged in the storage section 82.

[0099] In addition, since the screen 81 is installed in a flat shape, force may always be applied to the screen 81 in the direction in which the storage unit 82 winds the screen 81, or the screen 81 may be wound in a state where the screen 81 is completely pulled out. The screen 81 may be provided with a stopper so that no force is applied in the taking direction. The method for stabilizing the screen 81 in the unfolded state is not limited thereto.

[0100] The storage portion 82 may be installed at a position behind the ceiling 191 in the vehicle 190, at a position below the lower portion of the vehicle 190, at the rearmost end of the trunk 195 of the vehicle 190, or the like. When the storage unit 82 is installed behind the lower part in the vehicle 1 90, the open / close detection unit 90 is preferably installed behind the ceiling 191 in the vehicle 190, It may be installed at a position. When the storage unit 82 is installed at the rearmost end of the trunk 195, the open / close detection unit 90 is preferably installed behind the lower part of the vehicle 190, but at a position other than the lower part of the lower part of the vehicle 190. It may be installed in.

[0101] The storage section 82 is not limited to a roll for winding the screen 81. For example, the storage unit 82 may have a structure in which the screen 81 is placed flat on the ceiling 191 in the vehicle 190 when stored, and is drawn out rearward in the vehicle 190 when used.

[0102] Further, the opening / closing detection unit 90 may detect the deployment of the screen 81 in the storage unit 82 which does not have to be a hook type.

[0103] The technology described in the second embodiment or the third embodiment may be applied to this embodiment. When the technology described in the second embodiment is applied to the present embodiment, the power is automatically turned on when the installation of the screen 30 or the screen 81 is detected. Further, the focal length adjustment and the trapezoid correction for projecting an image on the screen 81 may be performed only by detecting the storage of the screen 30. Conversely, the focal length adjustment and the trapezoidal correction for projecting an image on the screen 30 may be performed only by detecting the storage of the screen 81. When the technology described in the third embodiment is applied to the present embodiment, for example, the in-vehicle video projection device 70 includes a separate screen position changing unit that stores or deploys the screen 81, and the screen 30 and the screen 81 It is sufficient that the operation means 61 has a switch for inputting which of the two is used. Screen 30 and screen In the state where both the lean 81 are stored, as described in the first embodiment, the automatic focus adjustment function by the focal length adjustment unit 28 is turned off, and the user manually adjusts the lens position of the projection unit 21, That is, the focal length may be adjusted.

(Fifth Embodiment)

First, the configuration of the image projection device according to the fifth embodiment will be described.

[0105] Among the configurations of the image projection device according to the present embodiment, the same configuration as the configuration of the image projection device according to the fourth embodiment is the same as the configuration of the image projection device according to the fourth embodiment. The same reference numerals as in the above configuration are used, and detailed description is omitted.

As shown in FIGS. 12 and 13, the configuration of the vehicle-mounted image projection device as the image projection device according to the present embodiment includes a reflection member that reflects an image projected by projector 20 toward screen 81. 100 is the same as the configuration provided in the in-vehicle video projector 70 (see FIG. 10) according to the fourth embodiment.

[0107] However, the opening / closing detection unit 40 detects whether or not the reflection member 100 is deployed, and outputs detection information to the focal length adjustment unit 28, which constitutes a reflection member position detection unit. are doing.

[0108] The screen 81 is a reflective screen for a user sitting on the front seat 193 in the vehicle 190 for viewing.

[0109] Further, storage section 82 is mounted in front of ceiling 191 in vehicle 190.

[0110] The hook-type opening / closing detection unit 90 is attached to the front center of the lower part in the vehicle 190.

[0111] Similarly to the screen 30, the reflecting member 100 is attached to the fixing portion 22 of the projector 20 by an arrow.

It is rotatably supported in the direction indicated by 30a.

When the screen 30 is deployed to the state shown in FIG. 12, the open / close detection unit 40 detects that the screen 30 has been deployed, and outputs detection information. Then, when the detection information output by the opening / closing detection unit 40 is input, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21 so that an image is formed on the image screen 30 projected by the projector 20. Therefore, vehicle 190 The user sitting in the backseat 192 inside can see the image on the screen 30.

Further, as shown in FIG. 13, when the reflection member 100 installed inside the screen 30 is taken out and the screen 81 is taken out from the storage section 82 and installed, the opening / closing detection section 90 becomes It detects that the clean 81 has been developed and outputs detection information to the video generation unit 24 and the focal length adjustment unit 28. When the detection information is input from the open / close detection unit 90, the image generation unit 24 corrects the trapezoid of the generated image so that the shape of the image projected by the projector 20 is correctly rectangular on the screen 81. Further, when the detection information is input from the open / close detection unit 90, the focal length adjustment unit 28 adjusts the lens position of the projection unit 21 so that an image is formed on the image power screen 81 projected by the projector 20. Therefore, the user sitting on the front seat 193 in the vehicle 190 can watch the image on the screen 81.

As described above, the on-vehicle image projection device according to the present embodiment uses the single projector 20 for viewing the user sitting on the rear seat 192 in the vehicle 190 and for the vehicle 190 The front seat 193 can be used to switch between viewing and listening. Further, the on-vehicle image projection device according to the present embodiment can be used for viewing by a user sitting on the rear seat 192 in the vehicle 190 and for viewing by the user sitting on the front seat 193 in the vehicle 190. Since the focal length adjustment and the trapezoidal correction are performed automatically, the user's labor can be saved. Further, the in-vehicle video projector according to the present embodiment requires more space for viewing as compared with the case where both the screen 30 and the screen 81 are of the rear projection type as described in the fourth embodiment. Can be reduced.

[0116] The in-vehicle video projector according to the present embodiment is configured such that opening / closing detecting section 90 detects that reflective member 100 has been deployed when opening / closing detecting section 90 detects that screen 81 has been deployed. In this case, the image projected by the projector 20 may be adjusted for the screen 81.

[0117] Further, the method by which the separate screen position detecting means detects that the screen 81 is expanded is not limited to the method described above. For example, the separate screen position detecting means may be arranged in the storage section 82.

[0118] In addition, the opening / closing detection unit 90 does not need to be a hook type. You may make it detect.

[0119] In addition, since the screen 81 is set in a flat shape, the storage unit 82 may always apply a force to the screen 81 in a direction in which the screen 81 is wound, or may be wound in a state where the screen 81 is completely pulled out. The screen 81 may be provided with a stopper so that no force is applied in the taking direction. The method for stabilizing the screen 81 in the unfolded state is not limited thereto.

[0120] The storage section 82 is not limited to a roll that winds the screen 81. For example, the storage unit 82 may have a structure in which the screen 81 is placed flat on the ceiling 191 in the vehicle 190 when stored, and is drawn out forward in the vehicle 190 when used.

[0121] The projector 20 may be installed at a different position by further providing one or more reflecting mirrors. Further, the projector 20 may be further installed at the rear, and the screen 81 may be installed at the back of the front seat 193. Further, the image may be projected on both the screen 30 and the screen 81, even if the reflecting member 100 is a semi-transmissive mirror. In this case, the screen 30 is for a third row seat occupant.

[0122] In order to prevent light projected by projector 20 from directly entering the user's eyes, a light-shielding plate may be provided around reflective member 100. Further, the reflecting member 100 which does not need the screen 30 may be attached to the vehicle 190 separately from the projector 20.

[0123] The technology described in the second embodiment or the third embodiment may be applied to the present embodiment. When the technology described in the second embodiment is applied to the present embodiment, the power is automatically turned on when the installation of the screen 30 or the screen 81 is detected. Further, the focal length adjustment and the trapezoid correction for projecting an image on the screen 81 may be performed only by detecting the storage of the screen 30. Conversely, the focal length adjustment and the trapezoidal correction for projecting an image on the screen 30 may be performed only by detecting the storage of the screen 81. When the technology described in the third embodiment is applied to the present embodiment, for example, the in-vehicle video projector according to the present embodiment includes a separate screen position changing unit that stores or deploys the screen 81, It is only necessary that the operating means 61 has a switch for inputting which of the screen 30 and the screen 81 is used. Further, the in-vehicle video projection device according to the present embodiment is configured such that when the screen 81 is deployed, There may be provided a reflecting member position changing means for unfolding the reflecting member 100 and storing the reflecting member 100 at the same time as the screen 81 is stored. In a state where both the screen 30 and the screen 81 are stored, as described in the first embodiment, the automatic focus adjustment function by the focal length adjustment unit 28 is turned off, and the user manually projects the image. The lens position of the unit 21, that is, the focal length may be adjusted.

[0124] Further, as a combined form of the fourth embodiment and the present embodiment, an ornamental screen for a user sitting on rear seat 192 in vehicle 190 and a front seat in vehicle 190 are provided. 193 The three screens, consisting of a screen for the user to sit and watch and a screen for the user outside the vehicle 190, are mounted and equipped with a structure to detect the opening and closing of all screens. May be.

In all embodiments, the projector 20, the screen 30, and the reflection member 100 may not be installed on an integrated device but may be installed as separate devices. Industrial applicability

As described above, the image projection device according to the present invention has an effect that an image can be projected from a projector to a screen without automatically rotating the projector with respect to the screen. It is useful as an in-vehicle video projection device mounted on a vehicle such as an automobile to provide images to occupants.

Claims

The scope of the claims

[1] A projector for projecting an image, an integrated screen integrally formed with the projector so as to be changeable in position with respect to the projector, and an integrated screen for projecting the image, and an integrated sensor for detecting a position of the integrated screen with respect to the projector. An image projection apparatus comprising: a screen position detecting unit; and an image adjusting unit that adjusts the image for the integrated screen according to the position of the integrated screen detected by the integrated screen position detecting unit.

[2] The image adjusting means adjusts the image for the integrated screen only when the position of the integrated screen detected by the integrated screen position detecting means is a predetermined position. Item 2. The image projection device according to Item 1.

3. The image according to claim 1, further comprising power control means for controlling power supply to the projector according to the position of the integrated screen detected by the integrated screen position detection means. Projection device.

[4] operating means operated by the user,

2. The image projection device according to claim 1, wherein the image adjustment unit adjusts the image for the integrated screen in accordance with a user operation on the operation unit.

[5] An operation means operated by a user, and power control means for controlling supply of electric power to the projector according to a user operation on the operation means. 2. The image projection device according to 1.

[6] An operating means operated by a user, and integrated screen position changing means for changing a position of the integrated screen with respect to the projector in accordance with an operation of the operating means by the user. 2. The image projection device according to claim 1, wherein:

[7] A separate screen which is formed separately from the projector and projects the image, wherein the separate screen has the integrated screen at a position other than the position where the image is projected by the projector. 2. The image projection device according to claim 1, wherein the image projection device is arranged at a position where the image is projected by the projector.

[8] The image adjusting means adjusts the image for the separate screen according to the position of the integrated screen detected by the integrated screen position detecting means. 8. The image projection device according to claim 7, wherein:

[9] a separate screen position detecting means for detecting a position of the separate screen with respect to the projector,

The image according to claim 7, wherein the image adjustment unit adjusts the image for the separate screen according to the position of the separate screen detected by the separate screen position detection unit. Projection device.

[10] The image adjusting means adjusts the image for the separate screen only when the position of the integrated screen detected by the integrated screen position detecting means is a predetermined position. An image projection device according to claim 8.

[11] The image adjustment means adjusts the image for the separate screen only when the position of the separate screen detected by the separate screen position detection means is a predetermined position. The image projection device according to claim 9, wherein

12. The apparatus according to claim 9, further comprising power control means for controlling supply of power to the projector in accordance with the position of the separate screen detected by the separate screen position detection means. Image projection device.

[13] An operating means operated by a user, and a separate screen position changing means for changing a position of the separate screen with respect to the projector in accordance with a user operation on the operating means are provided. 8. The image projection device according to claim 7, wherein:

[14] a reflection member for reflecting the image projected by the projector toward the separate screen,

The integrated screen is a rear projection type screen,

The image projection device according to claim 7, wherein the separate screen is a reflection type screen.

[15] a reflecting member position detecting means for detecting a position of the reflecting member with respect to the projector,

15. The image projection device according to claim 14, wherein the image adjustment unit adjusts the image for the separate screen according to the position of the reflection member detected by the reflection member position detection unit.

16. The image projection device according to claim 14, further comprising a reflection member position changing unit that changes a position of the reflection member with respect to the projector according to a position of the separate screen with respect to the projector. .

[17] A vehicle comprising the image projection device according to claim 1 provided on at least one of an inner ceiling and a rear surface of an inner seat.

[18] The image projection device according to claim 7, further comprising:

The vehicle according to claim 1, wherein the integrated screen and the separate screen are rear projection screens.

[19] A vehicle comprising the image projection device according to claim 14 on an internal ceiling in a state where the projector projects the image in a rearward direction.