WO2007102443A1

WO2007102443A1 - Projector stand

Info

Publication number: WO2007102443A1
Application number: PCT/JP2007/054099
Authority: WO
Inventors: Kazuyuki Nakamura
Original assignee: Nanodesign Corporation
Priority date: 2006-03-07
Filing date: 2007-03-02
Publication date: 2007-09-13
Also published as: JP2009133879A

Abstract

To provide a projector stand which does not require a separate stand for a personal computer, and which is conveniently transportable, and easily usable even when presentation is given to a large number of visitors. The projector stand comprises a pedestal frame (2) formed in a frame shape by bar-like members, four struts (3, 4, 5, 6) of which a front and a rear pair are upwardly installed on the pedestal frame (2), a screen support frame (7) attached to the upper ends of the struts (3, 4, 5, 6) so as to be inclined diagonally downward toward the front, screen locking members (8, 8) mounted on a screen support frame (7), a screen (9) made of a semi-transparent member locked to the screen support frame (7) by the screen locking members, and a personal computer rack (13) mounted at the intermediate position between the rear struts (5) and (6) so as to be projected toward the rear.

Description

Specification

Projector Stand Technical Field

The present invention relates to a projector stand for projecting an image using an image projection apparatus (hereinafter referred to as “projector”).

Background art

[0002] As a conventional projector 'stand, those described in Patent Documents 1 and 2 are known.

FIG. 14 is a perspective view of a projector stand (projection display device) described in Patent Document 1. A projector stand 100 shown in FIG. 14 includes a base part 101, support legs 102, a projector installation part 103, a mirror part 104, and a screen part 105. In the projector installation unit 103, the projector 106 is accommodated with the projection lens facing upward. Speakers 107 and 107 are installed on the left and right sides of the projector 106. The support leg 102 holds the mirror part 104 and the screen part 105 above the base part 101. The mirror portion 104 is attached to the upper end of the support leg 102 so as to be inclined, and its lower surface is a reflecting mirror. The screen unit 105 is a translucent screen suspended vertically on the upper end of the mirror unit 104.

The image projected from projector 106 is reflected by mirror unit 104 and projected from the back of screen unit 105. As a result, the image projected from the projector 106 is projected on the front surface of the screen unit 105! / Speak.

FIG. 15 is a perspective view of a projector stand (lecture apparatus) described in Patent Document 2. 15 includes a podium 111, a screen 112, a projector 113, a reflecting mirror 114, a shelf plate 115, and a support frame 116.

[0006] The translucent screen 112 is fixed vertically to the rear of the upper surface of the podium 111. The pedestal 111 is a box-shaped pedestal that opens to the rear, and a shelf 115 for mounting the projector 113 is fixed at an intermediate height inside the pedestal 111. Further, a support frame 116 for supporting the reflecting mirror 114 is provided so as to be drawn out to the rear of the shelf plate 115. The support frame 1 16 is a frame bent at a right angle, and the horizontal part is attached to the shelf board 115 with rails. The reflecting mirror 114 is attached to the vertical part.

An image projected from projector 113 is reflected by reflecting mirror 114 and projected from the back of screen 112. As a result, the image projected from the projector 113 is displayed on the front surface of the screen 112! /.

Patent Document 1: Japanese Patent Laid-Open No. 2000-321672

Patent Document 2: JP-A-2005-315994

Disclosure of the invention

Problems to be solved by the invention

[0008] Generally, when an image is projected by a projector, a personal computer or the like is connected to the projector, and the projected image is transmitted to a power projector such as a personal computer. That is, when using the conventional projector stand described above, it is necessary to connect a personal computer to the projector. Therefore, when using the above-mentioned conventional projector stand, it is necessary to prepare a stand for placing a personal computer separately, which is inconvenient.

[0009] Further, since each of the conventional projector stands described above is configured so that each component can be easily disassembled and assembled, there is a problem that it is inconvenient to carry.

[0010] Furthermore, when using a projector stand in an exhibition booth or the like

When exhibitors explain to a large number of visitors while showing images, it is more convenient for exhibitors to face each visitor. However, since each of the conventional projector stands described above has a vertical screen, if the exhibitor shows an image displayed on the screen, some of the visitors must be back. There are cases where it is unavoidable.

[0011] For example, when an exhibitor is standing on the right side of the screen and explaining the image on the screen, the frontal power of the screen is a power that allows visitors on the left side to see the entire screen. Exhibitors may not be able to see the entire screen because the exhibitor's body is in the way.

[0012] Therefore, each of the conventional projector stands described above has room for improvement in terms of use and convenience when explaining to a large number of visitors.

[0013] Therefore, the object of the present invention is that it does not require a personal computer stand and is easy to carry. Also, it is to provide an easy-to-use projector 'stand when explaining to many visitors.

Means for solving the problem

[0014] The first configuration of the projector 'stand of the present invention comprises a pedestal frame formed in a frame shape by a rod-shaped member;

At least three struts made of a rod-like member and erected upwardly in front of and behind the pedestal frame;

A screen support frame that is configured in a frame shape with a rod-shaped member and is inclined to the front and inclined obliquely downward, and attached to the upper end of the column;

A screen locking member attached to the screen support frame;

A screen made of a translucent member locked to the screen support frame by the screen locking member;

And a personal computer shelf provided projecting rearward at an intermediate position of the rear support column.

According to this configuration, the pedestal frame is placed on the floor, and a commercially available projector is placed in the frame with the projection direction directed rearward. Then, the projector is adjusted so that the projected image of the projector is reflected on the back of the screen with the projector facing diagonally upward to the rear. Thereby, the projection image of the projector can be projected on the screen.

[0016] Here, a personal computer shelf is attached in the middle of the pair of posts behind the projector stand, so there is no need to prepare a separate desk for placing a personal computer to output images projected by the projector. Is expensive. In addition, since the PC stand is integrated, the structure becomes extremely compact.

[0017] Further, since the screen is inclined obliquely downward toward the front and attached to the upper end of the column, and a personal computer shelf is arranged behind the screen, an explanation is given when explaining using the projector 'stand. Can stand behind the screen and operate the computer to display images on the front screen. Then, while facing the visitors, you can explain while referring to the images. Therefore, when explaining to many visitors at exhibition booths, etc., the location of the presenters gets in the way and some visitors are The situation where the image becomes invisible is not generated.

[0018] In addition, the screen is installed in a state where the screen is inclined obliquely downward with a forward force. As a result, it is possible to visually recognize that the image is projected on the screen even in the distance force, and to attract the attention of the visitor. Since the screen is tilted, the image projected on the screen can be clearly seen when approaching rather than far away. Therefore, an interested visitor approaches to the front of the screen to clearly see the projected image. In this way, tilting the screen has the effect of attracting visitors to the front of the screen.

[0019] When viewing the projected image while standing in front of the screen, the screen is inclined, so that the visitor looks down on the image in front of the screen. Therefore, compared to the case where the image is projected onto the vertical plane, the visitor can view the image in a more comfortable posture.

[0020] In addition, even when the presenter is standing next to the screen and explaining while talking with the visitor, the screen is tilted, so that the image is displayed on the tilted desk. It becomes. For this reason, it is easy to point to the position in the image, and the convenience of use is good for both the explanation side and the explanation side.

[0021] The second configuration of the projector 'stand of the present invention is the same as that of the first configuration, wherein the pedestal frame, the four support columns, and the screen support frame are combined with a pipe member and a joint. It is structured to be assembled and disassembled freely.

[0022] As described above, the pedestal frame, the four support columns, and the screen support frame are configured by the assembled and disassembled knives and joints, so that the projector's stand can be transported extremely easily. Become.

[0023] The third configuration of the projector stand according to the present invention is that, in the second configuration, the base frame body and the screen support frame body are configured by combining a pipe member and a joint, The outer dimension is substantially the same as that of the screen.

[0024] By configuring the outer dimensions of the pedestal frame and the screen support frame in the same manner as the outer dimensions of the screen in this way, the plastic plate, the acrylic plate, the glass plate, or the like may be damaged during transportation. Easily, the screen composed of the members can be sandwiched between the pedestal frame and the screen support frame. This makes the screen susceptible to damage The pedestal frame and the screen support frame can be safely transported as protective frames.

[0025] A fourth configuration of the projector 'stand of the present invention is that, in the third configuration, the screen, the pedestal frame, and the screen support frame are formed in a square shape, and the pedestal frame The body is characterized in that a pair of opposing sides is constituted by an elastic member, and the outer dimension of the body can be made substantially the same as that of the screen by expanding and contracting the elastic member.

[0026] In this way, by making the pair of opposing sides of the pedestal frame body extendable and retractable, the outer dimensions of the pedestal frame body are the same as the outer dimensions of the screen during transportation, and the screen can be transported safely. Is possible. On the other hand, at the time of assembly, it is possible to secure an area of an optimal size in which the reflector and the projector can be arranged by expanding and contracting the expansion and contraction member of the base frame. In addition, by optimizing the installation positions of the reflecting mirror and the projector, it is possible to project an image with less distortion and defocusing onto an inclined screen.

The fifth configuration of the projector stand according to the present invention is that, in the first configuration, the optical axis setting mark is attached to a part of the frame on the front and rear sides of the base frame body. It is characterized by being.

[0028] Thus, by attaching marks for setting the optical axis to a part of the frame on the front and rear sides of the pedestal frame, it is easy to align the optical axis when installing a projector or a reflecting mirror. The installation work is simplified.

[0029] A sixth configuration of the projector 'stand of the present invention includes a reflecting mirror that is installed inside the pedestal frame body in the first configuration and has a reflecting surface that is inclined with respect to a horizontal plane. The inclination angle of the reflecting surface of the mirror is set to a value obtained by adding a half of the inclination angle of the horizontal plane force of the screen support frame to an angle of 45 degrees horizontal plane force.

[0030] In this way, by setting the tilt angle of the reflecting mirror, the projection mirror position, the reflecting mirror angle, the projector position, and the projector angle are used to project an image with little distortion and defocusing. The image projection power on the screen that was adjusted with the combination of the four parameters Basically, only the position of the reflector and the position of the projector are used, and a clean image is obtained. The installation work for finding the optimum arrangement conditions for display is greatly simplified.

[0031] The seventh configuration of the projector stand according to the present invention is such that, in the first configuration, it is detachably provided between the two support columns erected on the front side of the base frame body. It is characterized by having a shielding plate.

[0032] With this configuration, the back of both front columns is shielded by the shielding plate. Therefore, since the reflecting mirror and the projector are hidden by the shielding plate, the appearance is neat and beautiful when making a presentation at an exhibition booth or the like. In addition, the lower part of the screen is hidden from the front of the projector stand so that the audience's attention can be concentrated on the screen.

[0033] An eighth configuration of the projector stand according to the present invention is characterized in that, in the first configuration, left and right sides of the screen support frame are provided with speakers attached to project outside the frame. .

[0034] Thereby, when a presentation is given at an exhibition booth or the like, a personal computer microphone can be connected to a speaker to amplify sound for explanation. For this reason, convenience is improved because it is not necessary to install a separate speaker.

[0035] Further, in the present invention, a configuration may be adopted in which a clamping member that clamps a transparent or translucent film or paper is provided on the upper or side of the screen.

[0036] Thereby, a transparent or translucent film or paper is sandwiched on an inclined screen, the film or paper is superimposed on the image projected on the screen by the projector, and a stroke is written at the time of explanation. Can do. When the explanation is over, remove the film or paper on which you wrote, and you will have a clean screen. This further improves the convenience of explanation.

[0037] In the present invention, the screen is a translucent writing board that can draw a stroke using ink and can wipe the drawn stroke with an eraser to erase it. It can be.

[0038] Thereby, the explainer or the visitor can draw a stroke using the ink in a state where the image is projected by the rear force projector onto the screen provided in an inclined manner. In addition, when the explanation is over, the drawn strokes are erased by erasing them with the laser. It will be clean. This further improves the convenience in explanation.

In the present invention, the screen can be a translucent touch panel.

[0040] According to this configuration, in a state where the image is projected by the rear force projector on the screen provided at an inclination, the explainer and the visitor use the touch panel to send the image information to the projector such as a personal computer. Drawing information can be input to the outputting computer. Based on this drawing information, the computer can draw on the image projected on the screen by drawing on the image projected on the projector. This further improves the convenience of explanation.

Here, it refers to an input device that inputs coordinate information as an electrical signal by pressing a position on a screen.

The invention's effect

[0042] As described above, according to the projector stand of the present invention, a personal computer shelf is attached to the middle position between the pair of rear columns, so that a desk for placing a computer for outputting an image projected by the projector is separately provided. There is no need to prepare, and convenience is improved.

[0043] In addition, when the explainer projects an image on the projector 'stand in front of a large number of visitors at an exhibition booth or the like, the screen is in front of the presenter. Can be explained in a state where and are always facing each other. Therefore, it is convenient for explanation. In addition, there will be no situation where some of the visitors cannot see the image due to the location of the presenter.

[0044] Furthermore, by constructing the pedestal frame, the four struts, and the screen support frame with a detachable pipe member and joint, it becomes very easy to carry the projector stand.

[0045] Furthermore, the pedestal frame and the screen support frame have the same width and depth dimensions as the screen, and the screen may be sandwiched between the pedestal frame and the screen support frame during transportation. And the projector's stand can be transported more safely.

[0046] Furthermore, the installation range can extend the depth of the pedestal frame body, so that the arrangement range of the reflecting mirror and the projector can be expanded, and at the same time, the optical axis setting mark is used. By adjusting the angle to the angle corresponding to the tilt angle of the screen, Images with little distortion and defocus can be projected onto the screen.

Brief Description of Drawings

[0047] FIG. 1 is a perspective view of a projector stand according to Embodiment 1 of the present invention as viewed obliquely forward.

FIG. 2 is a perspective view of a projector stand according to Embodiment 1 of the present invention as viewed from the left side.

FIG. 3 is a perspective view showing a usage state of the projector stand 1 according to the first embodiment.

FIG. 4 is a perspective view showing a usage state of the projector stand 1 according to the first embodiment.

FIG. 5 is a perspective view of the projector stand according to the second embodiment of the present invention as viewed obliquely forward.

FIG. 6 is a perspective view of a projector stand according to Embodiment 2 of the present invention as viewed from the left side.

FIG. 7 is a perspective view showing a usage state of the projector stand 1 according to the second embodiment.

FIG. 8 is a perspective view showing a usage state of the projector stand 1 according to the second embodiment.

FIG. 9 is a diagram showing a state in which the projector stand 31 is disassembled.

FIG. 10 is a diagram showing a state in which the projector 'stand 31 is folded after being disassembled.

FIG. 11 is a view showing a state where the projector 'stand 31 is housed in a bag.

FIG. 12 is a perspective view of the projector stand according to the third embodiment of the present invention in which the oblique forward force is also seen.

FIG. 13 is a view showing an example in which a projector stand according to Embodiment 3 of the present invention is provided with a clamping member.

FIG. 14 is a perspective view of a projector 'stand (projection display device) described in Patent Document 1.

FIG. 15 is a perspective view of a projector stand (lecture apparatus) described in Patent Document 2.

Explanation of symbols

[0048] 1 projector 'stand

2 Base frame

3, 4 Front strut

5, 6 Rear support

7 Screen support frame Screen locking member

screen

, 11 Optical axis setting mark

PC shelf support

Nosocon shelf

projector

Reflector

computer

, 31, projector 'stand

Base frame

a Left side

b Right side

, 34 Front strut

, 36 Rear support

Screen support frame

, 38 Screen locking member

Screen

PC shelf support

PC shelf prop

PC shelf

Optical axis setting mark

Large diameter pipe member

Small diameter pipe material

, 53, 55, 57, 59, 60, 66, 67 T-shaped joint

Lower pipe

Upper pipe

Hand stick 62, 63, 64, 65

70 Upper unit

75 bags

81 Speaker

82 Shield plate

82a Retaining hole

83 hook

84 Clamping member

85 films

BEST MODE FOR CARRYING OUT THE INVENTION

[0049] The best mode for carrying out the present invention will be described below with reference to the drawings.

Example 1

FIG. 1 is a perspective view of the projector stand 1 according to the first embodiment of the present invention when the oblique forward force is also seen. FIG. 2 is a perspective view of the projector stand 1 according to the first embodiment of the present invention when the left side force is also viewed.

[0051] The projector 'stand 1 according to the first embodiment includes a pedestal frame 2, front columns 3, 4, rear columns 5, 6, a screen support frame 7, a screen locking member 8, and a screen 9. Yes.

[0052] The pedestal frame 2 is formed in a rectangular frame shape by a pipe member. Optical axis setting marks 10 and 11 for aligning the optical axes of the projector and the reflecting mirror are attached to the center portions of the front side and the rear side of the pedestal frame 2.

[0053] Further, on the left and right sides of the pedestal frame 2, front support columns 3 and 4 are erected vertically. On the rear side of the pedestal frame 2, rear columns 5 and 6 are erected. These struts are all made of pipe members. The front struts 3 and 4 are lower than the rear struts 5 and 6. The left and right front struts 3 and 4 are the same height, and the left and right rear struts 5 and 6 are the same height. It is.

A screen support frame 7 configured in a rectangular shape by a pipe member is attached to the upper ends of the front columns 3 and 4 and the rear columns 5 and 6. Front struts 3 and 4 are rear struts 5 and 6 Therefore, the screen support frame 7 is inclined obliquely downward with a forward force. In addition, hooked screen locking members 8 and 8 are attached to the left and right corners of the lower side of the screen support frame 7. The screen 9 is installed on the screen support frame 7 while being locked by the screen locking members 8 and 8. The screen 9 can be made of a translucent material such as white cloth, milky white translucent plastic, or frosted glass. In this embodiment, in particular, a translucent writing board capable of erasing a stroke using ink as the screen 9 is used. As a result, the explainer or the visitor can draw a stroke on the screen 9 using ink in a state where an image is projected by the projector 20 on the screen 9 provided at an inclination. When the explanation is finished, the drawn picture is wiped with an eraser and erased, and the original clean screen 9 is obtained.

On the other hand, as shown in FIG. 2, a personal computer shelf support 12 is attached to the rear support columns 5 and 6 behind the screen 9 so as to protrude backward and horizontally. A personal computer shelf 13 that also serves as a plate-shaped member is installed on the upper part of the personal computer shelf support 12.

[0056] Each of the pedestal frame 2, the front struts 3 and 4, the rear struts 5 and 6, the screen support frame 7 and the personal computer shelf support 12 is configured by fitting the pipe member with a detachable joint. ing. Accordingly, these frames can be easily disassembled and assembled, and can be easily disassembled and carried to the installation site, and the projector stand 1 can be easily assembled at the installation site.

[0057] Furthermore, the pedestal frame 2 and the screen support frame 7 are configured to have substantially the same width and depth as the screen 9, and the screen 9 is moved by the pedestal frame 2 and the screen support frame 7 during transportation. It can be pinched and protected, and in this state, it can be safely transported in a transport bag.

A method of using the projector 'stand 1 of the first embodiment configured as described above will be described below.

FIGS. 3 and 4 are perspective views showing the usage state of the projector stand 1 according to the first embodiment. When the projector 'stand 1 is used, first, the projector 20 is installed in the frame of the pedestal frame 2 with the projection direction directed from the rear horizontal to the rear obliquely upward. Next, the reflecting mirror 21 is installed on the rear side of the projector 20 in the frame of the pedestal frame 2. The reflecting mirror 21 is installed so that the reflecting surface faces obliquely upward, and the reflecting surface is on the optical axis of the projector 20. Like that. Then, the projector 20 is turned on and projected, and the projected image of the projector 20 reflected by the reflecting mirror 21 is positioned at the center of the back surface of the screen 9. Adjust the angle.

[0060] At this time, referring to the optical axis setting marks 10 and 11, make sure that the irradiation lens of the projector 20 and the reflector 21 are positioned above the straight line connecting the optical axis setting marks 10 and 11. This makes it easy to align the optical axis.

[0061] Finally, the personal computer 22 is installed on the personal computer shelf 13 (see FIG. 4), and the personal computer 22 and the projector 20 are connected to complete the installation.

[0062] When an explanation is given using a projector 'stand 1 at an exhibition booth or the like, the presenter stands behind the personal computer shelf 13 (position S in FIG. 4). The visitor stands in front of screen 9. The explainer displays the image on the screen 9 while operating the computer 22 and explains to the visitor. In this way, if the projector 'stand 1 is used, the presenter can explain in a state of always facing the visitor. Since the screen 9 is not hidden behind the presenter, the explanation can be made smoothly even when there are many visitors.

[0063] In addition, when the presenter is standing next to the screen 9 and explaining while talking with the visitor, the screen 9 is inclined, so the image is displayed on the inclined desk. It will be in such a state. Therefore, the presenter can explain as if pointing to the image drawn on the desk, and it is easy to point the position in the image. Therefore, the user who provides the explanation and the person who receives the explanation will be more convenient.

[0064] Further, the presenter or the visitor can draw a stroke on the screen 9 using ink as necessary. When the explanation is over, the drawn strokes can be erased by wiping with a laser. As a result, it is possible to provide easy-to-use explanations, and the convenience of explanation is further improved.

[0065] When used in an actual exhibition hall, etc., the screen 9 is installed in a slanted downward direction toward the front, thereby attracting the attention of the visitors and attracting the visitors to the exhibition booth. Is obtained. That is, since the screen 9 is directed forward and inclined obliquely downward, the visitor throws some image on the screen 9 even with a distant force. It is possible to visually recognize that it is being shot. This alerts the visitors. Further, since the screen 9 is inclined, the image projected on the screen 9 can be more clearly seen when the distance force is closer than the distance force. Therefore, an interested visitor approaches the front of the screen 9 in an attempt to clearly see the projected image. In this way, by tilting the screen 9, an effect of attracting visitors to the vicinity of the screen 9 occurs.

[0066] Further, when viewing the projected image while standing in front of the screen 9, the screen 9 is inclined, so that the visitor looks down on the obliquely forward image. Therefore, compared with the case where the image is projected onto the vertical plane, the visitor can view the image with a more comfortable posture.

In this embodiment, a touch panel can be used as the force screen 9 using a translucent writing board as the screen 9. When the screen 9 is a touch panel, the coordinate information of the pressed position can be output as an electrical signal by pressing the position on the screen 9 with a pen or a finger. In this case, the output code of the touch panel is connected to the personal computer 22 so that the touch panel force also inputs coordinate information to the personal computer 22. The personal computer 22 performs drawing on the image output to the projector 20 based on the coordinate information input to the touch panel force. With this configuration, the presenter or visitor can draw strokes on the screen 9 without using ink. It is also easy to erase drawn strokes.

Example 2

FIG. 5 is a perspective view of the projector stand 31 according to the second embodiment of the present invention, in which the oblique forward force is also seen. FIG. 6 is a perspective view of the projector stand 31 according to the second embodiment of the present invention when the left side force is also viewed. Projector stand 31 in Figs. 5 and 6, pedestal frame 32, front columns 33 and 34, rear columns 35 and 36, screen support frame 37, screen locking members 38 and 38, screen 39, and nosocon shelf A support body 40, a saw rack 41, and a personal computer rack 42 are provided.

[0069] The projector stand 31 of the second embodiment is different from the configuration of the projector stand 1 of the first embodiment in that the pedestal frame 32 extends in the depth direction and under the PC shelf 42. In addition, a personal computer shelf post 41 is provided. Since the pedestal frame 32 extends in the depth direction, the length of the rear columns 35 and 36 is longer than that of Example 1 (Figs. 1 and 2). The rear struts 35 and 36 are also more inclined.

[0070] The pedestal frame 32 is formed in a rectangular frame shape by a pipe member. An optical axis setting mark 45 for aligning the optical axes of the projector and the reflecting mirror is attached to the central portion of the front side of the pedestal frame 32. In addition, the pedestal frame 32 has a left side 32a and a right side 32b configured by an expandable pipe. That is, the small-diameter pipe members 51, 51 are inserted into the large-diameter pipe members 50, 50 in the front portion of the left side 32a and the right-side 32b, and the small-diameter pipe members 51, 51 are the large-diameter pipe members 50, 50. It is configured to slide freely in and out of 50. The left side 32a and the right side 32b can be expanded and contracted by inserting / removing the small diameter pipe members 51, 51 from / into the large diameter pipe members 50, 50.

[0071] On the front part of the left and right sides of the pedestal frame 32, front support columns 33 and 34 are erected vertically. On the rear side of the pedestal frame 32, rear support columns 35 and 36 are erected. These struts are all made of pipe members. The front struts 33 and 34 are lower than the rear struts 35 and 36.The left and right front struts 33 and 34 are the same height, and the left and right rear struts 35 and 36 are also the same height. The same. The front struts 33 and 34 are connected to the pedestal frame 32 by rotating T-joints 52 and 52, and the rear struts 35 and 36 are connected to the pedestal frame 32 by rotatable T-joints 53 and 53. Has been. In addition, the upper ends of the front struts 33 and 34 are connected to each other by joints 54 and 54 and T joints 55 and 55 which are bent in a “<” shape. T-joints 55, 55 are rotatable.

[0072] The rear struts 35, 36 are constituted by a lower pipe 56, a T-shaped joint 57, and an upper pipe 58. The lower end of the lower pipe 56 is removably inserted into the T-shaped joint 53. The T-shaped joint 57 rotatably connects the lower pipe 56 and the upper pipe 58, and the lower pipe 56 can be inserted into and removed from the T-shaped joint 57. The upper pipe 58 is coupled to the screen support frame 37 by a T-shaped joint 59. The T-joint 59 is made rotatable. The left and right T-shaped joints 57 and 57 are connected by a combination of a T-shaped joint 60, a transfer rod 61, and a T-shaped joint 60. Note that the T-shaped joints 60 and 60 are rotatable with respect to the transfer rod 61.

[0073] At the upper ends of the front struts 33, 34 and the rear struts 35, 36, a screen support frame configured in a rectangular shape by pipe members 62, 63, 63, 64 and T-shaped joints 55, 55, 59, 59 Body 37 is attached. The height of the front struts 33 and 34 is lower than the height of the rear struts 35 and 36. The lean support frame 37 is inclined obliquely downward by applying a forward force. Further, hook-shaped screen locking members 38, 38 are attached to the left and right corners of the lower side of the screen support frame 37. The screen 39 is installed on the screen support frame 37 while being locked by the screen locking members 38, 38. The screen 39 is made of a translucent material such as white cloth, milky white translucent plastic, and frosted glass.

[0074] On the other hand, as shown in FIG. 6, the T-joints 60, 60 on the left and right ends of the transfer rod 61 passed between the rear support posts 35, 36 behind the screen 39 are connected horizontally to the rear side. A shelf support 40 is provided protruding. A personal computer shelf 42 made of a plate-like member is installed on the upper part of the personal computer shelf support 40. The PC shelf support body 40 is formed in a U shape in which left and right L-shaped pipe members 65, 65 are rotatably coupled by a T-shaped joint 66 (see FIG. 10). The T-joint 66 at the center of the rear side of the PC shelf support 40 is connected to the T-joint 67 provided rotatably at the center of the rear side of the base frame 32 by the PC shelf support 41. It is connected.

[0075] In FIG. 6, the personal computer shelf support 41 may be composed of two powers as in the case of the other power support.

FIGS. 7 and 8 are perspective views showing the usage state of the projector stand 31 according to the second embodiment. When using the projector 'stand 31, first, the projector 20 is installed in the frame of the pedestal frame 32 with the projection direction directed from the rear horizontal to the rear obliquely upward. Next, the reflecting mirror 21 is installed on the rear side of the projector 20 in the frame of the base frame 32. The reflecting mirror 21 is installed so that the reflecting surface faces obliquely upward and forward so that the reflecting surface is on the optical axis of the projector 20. Then, the projector 20 is turned on and projected, and the position of the projector 20 and the angle of inclination of the projector 20 and the position of the reflector 21 are such that the projected image of the projector 20 reflected by the reflector 21 is in the center of the back of the screen 39. · Adjust the tilt angle.

[0077] At this time, referring to the positions of the optical axis setting mark 45 and the T-shaped joint 67, the irradiation lens of the projector 20 and the reflecting mirror 21 are in a straight line connecting the optical axis setting mark 45 and the T-shaped joint 67. By aligning them so that they come upward, the optical axes can be easily aligned.

[0078] Further, the reflecting mirror 21 and the projector 20 can be disposed by extending the expansion pipes (the large diameter pipe member 50 and the small diameter pipe member 51) on the left and right sides of the pedestal frame 32 to extend the depth. Expand the range. This makes it possible to display a high quality image with less distortion and defocus.

This makes it easier to find the conditions for projection onto 39.

[0079] Further, at this time, the inclination angle of the reflecting mirror 21 is set to a value obtained by adding an angle of 0 to 45 degrees and a half of the inclination angle of the screen 39 from the horizontal. For example, if the screen 39 has an inclination angle of 45 degrees in horizontal force, the inclination angle of the reflector 21 should be set to 67.5 degrees. As a result, the tilt angle of the reflecting mirror 21 is optimized, and the optical axis can be easily aligned by adjusting the position of the reflecting mirror 21 and the position of the projector 20 or by adjusting the position of the reflecting mirror 21 and the tilt angle of the projector 20. it can.

[0080] Finally, the personal computer 22 is installed on the personal computer shelf 42 (see FIG. 8), and the personal computer 22 and the projector 20 are connected to complete the installation.

Next, a case where the projector 'stand 31 is disassembled and stored will be described. First, remove the screen 39 from the projector stand 31. Since the screen 39 is placed on the screen support frame 37 and only locked by the screen locking members 38, 38, it can be easily removed.

Next, as shown in FIG. 9, the U-shaped joints 54 and 54 are pulled out from the front support pillars 33 and 34, and the T-shaped grippers 57 and 57 of the rear support pillars 35 and 36 are moved to the lower support 56. , 56 Remove the force, and connect the PC shelf support 41 to the character-shaped joint 66 (see Fig. 10) of the PC shelf support body 40, including the screen support frame 7, the PC shelf support body 12, and the PC shelf 13 Remove the upper unit 70. In addition, remove the front struts 33 and 34 from the upper and lower arms 52, 52, and remove the lower spurs 56, 56 from the rear J struts 35, 36 from the T-shaped joints 53, 53, and T Remove from the joint 67 to separate the pedestal frame 32. The state of the above disassembly is shown in FIG. 9 (screen 39 is omitted).

Next, as shown in FIG. 10, for the pedestal frame 32, the small-diameter pipe members 51 on the left and right sides are accommodated in the large-diameter pipe member 50, and the expandable pipe is contracted. In addition, the T-shaped joints 52, 5 2, 53, 53, 67 are rotated inward to accommodate the protrusions in the frame. As a result, the outer dimension of the pedestal frame 32 becomes substantially equal to the outer dimension of the screen 39.

On the other hand, with respect to the upper unit 70, the T-shaped joints 55, 55 are rotated inside the frame of the screen support frame 37 to accommodate the protrusion in the frame. Further, rotate the T-shaped joints 59, 59, T-shaped joints 60, 60, and T-shaped joint 66 to the inside of the frame of the screen support frame 37, so that the rear column The upper pipes 58 and 58 of 35 and 36 and the PC shelf support body 40 are accommodated in the frame of the screen support frame 37.

FIG. 10 shows a state where the above folding is performed. In this state, the outer dimensions of the pedestal frame 32 and the outer dimensions of the upper unit 70 are substantially equal to the outer dimensions of the screen 39.

Finally, as shown in FIG. 11, the screen 39 is sandwiched between the pedestal frame 32 and the upper unit 70 and accommodated in the bag 75.

[0087] Thus, during transportation, it is possible to use the pedestal frame body 32 and the upper unit 70 as transportation protection materials for the screen 39 by making the outer dimensions of the pedestal frame body 32 substantially the same as the outer dimensions of the screen 39. It becomes.

Example 3

FIG. 12 is a perspective view of the projector stand according to the third embodiment of the present invention when the oblique forward force is also seen. In FIG. 12, the same components as those in the second embodiment are denoted by the same reference numerals and description thereof is omitted.

Compared with the project stand 31 of the second embodiment, the projector 'stand 31 of the present embodiment is different in that it includes a speaker 81 and a shielding plate 82.

[0090] The shielding plate 82 is detachably provided between the two front columns 33, 34 provided upright on the front side of the pedestal frame 32. The shielding plate 82 has a rectangular plate shape, and its outer shell size is approximately the same as the outer shell size of the screen 39 or smaller than the screen 39. As a result, when disassembled and stored in a bag as shown in FIG. 11, it can be stored compactly.

In the vicinity of the left and right corners of the upper side of the shielding plate 82, hooking holes 82a and 82a are provided. In addition, hooks 83 and 83 project from the positions facing the retaining holes 82a and 82a of the front columns 33 and 34, respectively. The shielding plate 82 is hooked on the front struts 33 and 34 by hooking the hooking holes 82a and 82a on the hooks 83 and 83. In this way, the shield plate 82 is configured to be hooked on the front support columns 33 and 34 at two points, so that the front support columns 33 and 34 are fitted into the base frame 32 with some distortion. However, it is possible to easily and quickly attach the shielding plate 82 to the front support columns 33 and 34. In addition, as shown in FIG. 12, the back of both front columns 33 and 34 is shielded by the shielding plate 82. Therefore, since the reflector and projector (see Fig. 8) are hidden by the shielding plate 82, the appearance will be beautiful and beautiful when a presentation is given at an exhibition booth. In addition, the lower part of the screen is hidden from the front of the projector stand so that the audience's attention can be concentrated on the screen.

The speakers 81 and 81 are attached to the left and right of the screen support frame 37 so as to protrude outside the frame. The speakers 81 and 81 can be attached to and detached from the screen support frame 37. When carrying, the speakers 81, 81 can be removed from the screen support frame 37 and stored compactly in the nog. The speakers 81 and 81 can be connected to a personal computer for operating the projector, or can be connected to a microphone prepared separately.

In addition, the speakers 81 and 81 are fixed to the screen support frame 37 by surface fasteners. As described above, by using the hook-and-loop fastener as a means for fixing the speakers 81 and 81 to the support frame 37, the speakers 81 and 81 can be easily and quickly attached to the support frame 37.

Furthermore, a clamping member 84 that clamps a transparent or translucent film or paper may be provided on the top or side of the screen 39. FIG. 13 shows an example in which a clamping member 84 is provided. With this pinching member 84, a transparent or translucent film 85 or a translucent paper such as a trace paper can be hooked. By drawing drawings for explanation on this film 85, it is possible to give easy explanation to visitors. In addition, after the explanation is over, if this film 85 is replaced, the original clean screen will be obtained, so it can be used repeatedly. Industrial applicability

The present invention can be used in an industry that manufactures and sells a projector stand that is used when a presentation is given at an exhibition booth or the like.

Claims

The scope of the claims

[1] a pedestal frame formed into a frame shape by a rod-shaped member;

A screen locking member attached to the screen support frame;

A projector stand, comprising: a personal computer shelf provided projecting rearward at an intermediate position of the rear support column.

[2] The projector according to claim 1, wherein the pedestal frame, the four support columns, and the screen support frame are configured to be assembled and disassembled by combining a pipe member and a joint. 'stand.

[3] The base frame body and the screen support frame body are configured by combining a pipe member and a joint, and the outer dimensions of the base frame body and the screen support frame body are substantially the same as the screen. Projector 'stand.

[4] The screen, the base frame, and the screen support frame are formed in a square shape,

The projector according to claim 3, wherein the pedestal frame body has a pair of opposing sides made of an elastic member, and the outer dimension of the base frame body can be made substantially the same as that of the screen by expanding and contracting the elastic member. 'stand.

5. The projector'stand according to claim 1, wherein marks for setting an optical axis are attached to a part of the front and rear frames of the pedestal frame.

[6] Provided with a reflecting mirror installed inside the pedestal frame and having a reflecting surface inclined with respect to a horizontal plane,

The angle of inclination of the reflecting surface of the reflecting mirror is set to a value obtained by adding one-half of the angle of inclination of the screen support frame from the horizontal plane to an angle of 45 degrees from the horizontal plane. The projector according to claim 1, wherein the stand.

7. The projector'stand according to claim 1, further comprising a shielding plate that is detachably provided between the two support columns erected on the front side of the pedestal frame.

8. The projector'stand according to claim 1, further comprising speakers attached to the left and right of the screen support frame so as to protrude outside the frame.

9. The projector stand according to claim 1, further comprising a clamping member that clamps a transparent or translucent film or paper on an upper part or a side part of the screen.

[10] The screen is a translucent writing board capable of drawing a stroke using ink and erasing the drawn stroke by wiping with a laser. The projector according to claim 1 'stand.

11. The projector 'stand according to claim 1, wherein the screen is a translucent touch panel.