JP2003024143A - Teacher's desk with projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a teacher's desk with a projector that does not require setting and adjustment of equipment or the like before use and is convenient. SOLUTION: The teacher's desk with a projector is composed of a teacher's desk body 1 having a box-shaped storage section 9, a projector 28 stored in the storage section 9, and a projection information supplying device (personal computer) 21 supplying projection information to the projector 28. The top 5 of the storage section 9 is made up of a fixed top 5a, and a movable top 5b opening and closing to the fixed top, and when the opening and closing top 5b is opened, the lens portion 28a of the projector 28 is externally exposed, enabling information to be projected to the surface of a screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk with a projection device, and more particularly to a desk with a projection device suitable for being installed and used in a classroom or a conference room.

[0002]

2. Description of the Related Art Conventionally, in a classroom or a lecture hall, it is necessary for a teacher or a performer to display image information supplied from a projection information supply device such as a personal computer or a DVD drive on a screen by the projection device. Lectures and lectures are given.

In order to give a lecture or lecture in such a format, it is necessary to prepare required equipment including a projection information supply device and a projection device at a necessary place before the lecture or lecture.

Conventionally, in order to facilitate the preparation of the required equipment, as described in, for example, Japanese Patent Application Laid-Open No. 9-50244, a projection device (in a frame-shaped storage table having a top plate and a bottom plate) is provided. A liquid crystal projector) is housed and a top plate is provided with an operation unit of the projection device.
Further, as another example, for example, JP-A 2000-287.
As described in Japanese Patent No. 764, there is also proposed a storage container that can efficiently store required devices including a projection device when not in use.

[0005]

However, among the above-mentioned conventional techniques, the technique described in Japanese Patent Application Laid-Open No. 9-50244 does not include a projection information supply device for supplying projection information to the projection device. Since the projection information supply device has to be connected to the projection device every time a lecture or lecture is given, there is a problem that it is difficult to conduct a lecture or a conference efficiently. In addition, since the projection device is stored in a frame-shaped storage desk that does not have a front door and a back plate, the projection device is stolen or mischievous when it is installed in a place such as a classroom where unspecified people can enter and leave. There is also a problem that the projection unit is prone to damage, and the projection unit, especially the lens unit, of the projection unit is contaminated, and the service life of the projection unit tends to be shortened.

On the other hand, Japanese Patent Laid-Open No. 2000-2877.
The technique described in Japanese Patent Publication No. 64 stores the necessary equipment in a box-shaped storage container having a front door and a back plate when not in use, so there is no problem of theft, mischief, or shortening of the service life. However, at the time of lectures and lectures, it is necessary to take out necessary equipment from the storage container and perform wiring and adjustment, so that it is impossible to solve the problem that it is difficult to conduct lectures and meetings efficiently. Also, since the projection device etc. taken out from the storage container is used by placing it on the top plate of the storage container, the projection device etc. placed on the storage container is displayed as an obstacle on the screen. There is also a problem that the image information becomes difficult to see.

The present invention has been made in order to solve the deficiency of the prior art, and the purpose thereof is to make setting and adjustment of the equipment before use unnecessary and highly convenient for use, and to prevent theft or mischief. Also, it is less likely to damage the equipment,
Moreover, it is an object of the present invention to provide a teacher's desk with a projection device that makes it easy for the audience to see the image displayed on the screen.

[0008]

In order to achieve the above object, the present invention is, firstly, a main body of a teaching table having a box-shaped storage section, a projection apparatus stored in the storage section, and the projection apparatus. In a teaching device equipped with a projection information supply device for supplying projection information to a projector, the top plate of the accommodating section is composed of a fixed top plate and a movable top plate that opens and closes with respect to the fixed top plate, When the top plate is opened, the lens portion of the projection device is exposed to the outside so that information can be projected on the screen surface.

As described above, the top plate of the storage unit is composed of the fixed top plate and the movable top plate, and when the movable top plate is opened, the lens unit of the projection device is exposed to the outside and the information on the screen surface is displayed. If you enable projection, you can use the projection device just by opening the movable top plate, and you do not need to set or adjust the equipment before use. It is possible to hold lectures and meetings efficiently. Further, since the projection device is stored in the storage portion, it is possible to prevent or prevent the projection device from being stolen, mischievous, and dirty. Furthermore, since the movable top plate is configured to open and close with respect to the fixed top plate, it is difficult for the projection device to be in the sight of the audience as when the projection device is installed on the top plate, and it is displayed on the screen surface to the audience. The displayed image can be made easy to see.

In order to achieve the above object, according to the present invention, secondly, the projection device in the means for solving the first problem is fixed to the lower surface of the movable top plate, and the movable top plate is opened. At this time, the height position of the projection device from the floor surface and the inclination angle with respect to the floor surface are automatically set to predetermined height positions and inclination angles.

As described above, the projection device is fixed to the lower surface of the movable top plate, and when the movable top plate is opened, the height position of the projection device from the floor surface and the inclination angle with respect to the floor surface are predetermined. If the configuration is such that the predetermined height position and tilt angle are set, it is not necessary to adjust the height position and tilt angle of the projection device before use, so that the convenience of the teaching device with a projection device can be increased. Therefore, lectures and meetings can be held efficiently.

In order to achieve the above object, the present invention is thirdly arranged such that the projection device in the first problem solving means is fixed to a projection device mounting plate provided in the storage portion. I chose

As described above, when the projection device is fixed to the projection device mounting plate provided in the housing, the opening / closing operation of the movable top plate can be performed more easily than when the projection device is fixed to the lower surface of the movable top plate. Since it is possible to use, it is possible to easily use the teaching table with the projection device.

In order to achieve the above object, the present invention fourthly comprises a mirror for reflecting the light emitted from the lens section of the projection device, in the storage section in the first problem solving means. I made it up.

As described above, when the mirror for reflecting the light emitted from the lens portion of the projection device is provided in the storage part, the degree of freedom of the setting position and the setting posture of the projection device in the storage part can be increased, so that the projection is performed. It is possible to facilitate the design of a teaching machine with a device.

In order to achieve the above-mentioned object, the present invention, fifthly, the optical axis of the light beam emitted from the main body of the teaching table and projected on the screen surface in the first problem solving means is horizontal to the horizontal line. Has a predetermined elevation angle,
In addition, the configuration is such that the trapezoidal correction and the aspect ratio correction of the projection device are corrected to values according to the elevation angle.

As described above, when the trapezoidal correction and the aspect ratio correction of the projection device are corrected in advance to a value corresponding to the elevation angle of the light beam emitted from the main body of the teaching table and projected on the screen surface, these corrections before use are made. Since it is unnecessary, the convenience of the desk with the projection device can be enhanced, and the lecture and the conference can be held efficiently.

In order to achieve the above object, the present invention is sixthly configured such that the projection device and the projection information supply device in the first problem solving means are preliminarily connected to a power source.

In this way, if the projection device and the projection information supply device are connected to the power source in advance, it is not necessary to connect each device before use, so that the convenience of the teacher's table with the projection device can be improved. Therefore, lectures and meetings can be held efficiently.

In order to achieve the above object, the present invention seventhly opens and closes the movable top plate between the movable top plate and the other part of the storage section in the first problem solving means. A power switch that turns on and off in synchronism with the above is provided, and when the movable tabletop is opened, power is automatically supplied to the projection device and the projection information supply device, and when the movable tabletop is closed, the projection is performed. The power supply to the device and the projection information supply device is automatically cut off.

As described above, when the power supply to the projection device and the projection information supply device is automatically interrupted by the power switch which is turned on and off in association with the opening and closing of the movable top plate, the power-on operation before use and after use Since it is not necessary to separately perform the power-off operation separately from the opening and closing of the movable top plate, the convenience of the teaching table with the projection device can be improved, and the lecture and the conference can be efficiently held.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a desk with a projection device according to the present invention will be described below with reference to the drawings.

1 to 5 show a main body of a teaching pedestal with a projection device according to an embodiment. 1 is a perspective view of a non-used state of a teaching table body according to an exemplary embodiment, FIG. 2 is a perspective view of a used state of a teaching table body according to the exemplary embodiment, and FIG. 3 is a front view of a used state of a teaching table body according to the exemplary embodiment. FIG. 4 is a cross-sectional view of a main part of the main body of the teaching table according to the embodiment with the movable top closed.
FIG. 3 is a cross-sectional view of a main part of the teaching table body according to the exemplary embodiment with the movable top plate opened.

As is clear from these figures, the main body 1 of the present example has a column 2, an upper cross beam 3, a lower cross beam 4,
It comprises a top plate 5, a side plate 6, an opening / closing door 8, and a back plate and a bottom plate (not shown), and is surrounded by the top plate 5, the side plate 6, the opening / closing door 8, and a back plate and a bottom plate (not shown). The opened portion is the storage portion 9. The height of the teaching table main body 1 can be formed so that the teacher or the performer can use it while sitting on a chair, or the height that can be used while standing.

The top plate 5 has a fixed top plate 5a fixed to the support column 2 and the upper cross beam 3, and a rear end thereof pivotably attached to the fixed top plate 5a so that the front part can be opened and closed with respect to the storage part 9. The movable top plate 5b thus configured is used. That is, as shown in FIGS. 4 and 5, the support pins 10 are projected outward from the left and right side portions near the rear end of the movable top plate 5b.
The support pin 10 is rotatably held by the fixed top plate 5a, and the front part of the movable top plate 5b can be turned around the support pin 10 with respect to the fixed top plate 5a.

The movable top plate 5b and the column 2 are shown in FIGS.
As shown in FIG.
The length of the bending fitting 11 regulates the inclination angle of the movable top plate 5b with respect to the fixed top plate 5a when the movable top plate 5b is opened. That is, the bending fittings 11 are the first fittings 11 that are rotatably connected to each other via the connecting pins 11a.
b and the second metal fitting 11c, and the stopper pin 11d protruding from the second metal fitting 11c.
The end portions of 1b and the second metal fitting 11c are the connecting pins 12, respectively.
It is rotatably connected to the movable top plate 5b and the column 2 via a and 12b. Then, when the front end of the movable top plate 5b is lifted from the closed state shown in FIG. 4, the first metal fitting 11b and the second metal fitting 11c are extended in the direction in which the entire length of the bending metal fitting 11 (the distance from the connecting pin 12a to the connecting pin 12b) extends. When the first metal fitting 11b rotates and comes into contact with the stopper pin 11d projecting from the second metal fitting 11c, the movable top plate 5b is stably held, and the state shown in FIG. 5 is obtained. When the connecting pin 11a is pushed into the Okugawa of the storage portion 9 from this state, the first metal fitting 11 is
The contact between b and the stopper pin 11d protruding from the second metal fitting 11c is released, and the first metal fitting 11b and the second metal fitting 11c rotate in a direction in which the entire length of the bending metal fitting 11 contracts, as shown in FIG. The movable top plate 5b is closed.

The movable top plate 5b and the opening / closing door 8 are
As shown in FIGS. 1 to 3, locks 13 and 14 are attached so that they can be opened only by a person who holds a dedicated key. Each of these locks 13 and 14 may be provided with a key that can be opened with a different key in order to increase safety, and in order to facilitate opening and closing,
It is also possible to equip one that can be opened with the same key.

Next, the configuration of the electronic equipment provided in the teaching table body 1 will be described with reference to FIG.

As is apparent from this figure, in the teaching device equipped with a projection device of this example, a personal computer 21 as a projection information supply device, a keyboard 22, and a mouse 23 are provided.
A speaker 25 connected to the personal computer 21 via an audio amplifier section 24, and a touch panel 2 connected to the personal computer 21.
6, a TFT display device 27, a projection device 28 such as a liquid crystal projector, a movable top plate interlocking switch 29, and a circuit protector 30 that constitutes a power supply device. The front personal computer 21 includes a communication line connection device 31 such as a LAN. Connected. The personal computer 21 includes a VTR, a DVD-RAM, a CD-ROM.
Etc. can be attached.

The personal computer 21 can be used while being housed in the housing section 9, as shown in FIG.
It can also be used by mounting it on the fixed top plate 5a as shown in FIG. The keyboard 22 and the mouse 23 are used on the fixed top plate 5a.

The speaker 25 is attached to a back plate (not shown) provided on the main body 1 of the teaching table so that the student can listen to the lecture contents and the like well.

Touch panel 26 and TFT display device 27
Is installed on the fixed top plate 5a as shown in FIG.

As shown in FIGS. 4 and 5, the projection device 28 is attached to the lower surface of the movable top plate 5b by the metal fitting 15, and when the movable top plate 5b is opened, its lens portion 28a is exposed to the outside. A screen (not shown) can be irradiated with information light at an elevation angle regulated by the tilt angle of the movable top plate 5b when opened. Therefore, the tilt angle of the movable top plate 5b when opened is set to the angle required by the projection device 28. The inclination angle of the movable top plate 5b when opened can be adjusted by changing the length and the mounting position of the bending fitting. Incidentally, the keystone correction, the aspect ratio correction and the focus of the projection device 28 are
It is adjusted in advance according to the irradiation angle of the information light and the distance from the lens portion 28a to the screen.

The movable top plate interlocking switch 29 is provided, for example, on the fixed top plate 5a, and when the movable top plate 5b is opened,
When the contacts are switched to the ON state to automatically supply power to the electronic devices, and when the movable top plate 5b is closed, the contacts are switched to the OFF state to automatically supply power to the electronic devices. cut off.

Each of the other electronic devices is attached to a predetermined position in the storage section 9. It should be noted that a part of the teaching table body 1 (on the fixed top plate 5a in the example of FIGS. 1 and 2) may be provided with a connector 32 for performing required wiring.

Hereinafter, a method of using the teacher's desk with the projection device according to the embodiment will be described.

First, the locks 13 and 14 are opened, and the movable top plate 5
a lens portion 28a of the projection device 28 by causing the front end of a
Expose. Interlocking with the raising operation of the movable top plate 5a, the contact of the movable top plate interlocking switch 29 is automatically switched from the off state to the on state, and power is supplied to each of the electronic devices.

Further, when the first metal fitting 11b of the bending metal fitting 11 comes into contact with the stopper pin 11d protruding from the second metal fitting 11c, the movable top plate 5b is stably held, and the irradiation angle of the information light on the screen is changed. It is automatically set to a predetermined angle.

Since the projection device 28 can be used by the above operations, a user such as a teacher projects a desired image on the screen 40 by operating the keyboard 22 and the mouse 23 as shown in FIG. be able to.

The teaching table with the projection device according to the present embodiment is
Since it is configured as described above, it has the following effects.

(1) The top plate 5 of the storage section 9 is composed of a fixed top plate 5a and a movable top plate 5b. When the movable top plate 5b is opened, the lens part 28a of the projection device 28 is exposed to the outside. Since the information can be projected on the screen 40, the projection device 28 can be used simply by opening the movable top plate 5b, and it is not necessary to set or adjust the equipment before use. The convenience of the teaching desk with the device can be enhanced, and lectures and conferences can be held efficiently. In addition, since the projection device 28 is stored in the storage portion 9, the projection device 28 can be prevented or prevented from being stolen, mischievous, and dirty. Further, since the front end of the movable top plate 5b is turned up and down with respect to the fixed top plate 5a, as shown in FIG.
The projection device 28 (movable top plate 5b) does not easily enter the visual field of the audience, and the image displayed on the screen 40 can be easily seen by the audience.

(2) The projection device 28 is fixed to the lower surface of the movable top plate 5b, and when the movable top plate 5b is opened, the height position of the projection device 28 from the floor surface and the inclination angle with respect to the floor surface are automatically adjusted. Since the height position and the inclination angle are set in advance, it is not necessary to adjust the height position and the inclination angle of the projection device 28 before use, and it is possible to enhance the convenience of the table with the projection device. Lectures and meetings can be held efficiently.

(3) Since the trapezoidal correction and aspect ratio correction of the projection device 28 are corrected in advance to a value according to the elevation angle of the light beam projected from the teaching table main body 1 and projected on the screen 40, these values before use No correction is required, the convenience of the teaching table with the projection device can be improved, and lectures and conferences can be held efficiently.

(4) Since the projection device 28 and the personal computer 21 are connected to the power source in advance, it is not necessary to connect each device before use, and it is possible to enhance the convenience of the teacher's table equipped with the projection device and to hold lectures and meetings. It can be done efficiently.

(5) A movable table-top interlocking switch 29 which is turned on / off in synchronization with the opening / closing operation of the movable table-top 5b is provided, and the switch 29 automatically interrupts the supply of power to the projection device 28 and the personal computer 21. Because
There is no need to perform power-on operation before use and power-off operation after use separately from opening and closing the movable top plate, and it is possible to enhance the convenience of the teaching table with the projection device, and to efficiently conduct lectures and meetings. it can.

Although the projection device 28 is attached to the lower surface of the movable top plate 5b in the above-described embodiment, the projection device attachment plate (where the projection device 28 is fixed in the housing 9 is replaced with the above configuration. It can also be fixed to (not shown).

As described above, when the projection device 28 is fixed to the projection device mounting plate provided in the storage section 9, the projection device 28
Since it is possible to easily open and close the movable top plate 5b as compared with the case where the movable top plate is fixed to the lower surface of the movable top plate 5b, it is possible to facilitate the use of the teaching table with the projection device.

In the embodiment described above, the rear end of the movable top plate 5b is rotatably held by the fixed top plate 5a, and the front portion of the movable top plate 5b is vertically moved with respect to the fixed top plate 5a. Although it is configured to rotate, the gist of the present invention is not limited to this, and the movable top plate 5b may be configured to move in parallel in the vertical direction or the horizontal direction.

When the projection device 28 is fixed to the projection device mounting plate provided in the storage section 9, the projection device 28
Since the mounting position is restricted, the projection device 28 may not be set at the optimum height position at the optimum angle. In this case, as shown in FIG. 9, a mirror 42 that reflects the light emitted from the lens portion 28a of the projection device 28 may be provided in the housing portion 9.

Thus, the lens unit 28 of the projection device 28 is
If the storage section 9 is provided with the mirror 42 that reflects the light emitted from a, the degree of freedom of the setting position and the setting posture of the projection apparatus 28 in the storage section 9 can be increased. Can be facilitated.

[0051]

As described above, according to the present invention,
The top plate of the storage part is composed of a fixed top plate and a movable top plate, and when the movable top plate is opened, the lens part of the projection device is exposed to the outside so that information can be projected on the screen. Therefore, you can use the projection device just by opening the movable top plate, and there is no need to set or adjust the equipment before use. Can be done efficiently. Further, since the projection device is stored in the storage portion, it is possible to prevent or prevent the projection device from being stolen, mischievous, and dirty. Furthermore, since the movable top plate is configured to open and close with respect to the fixed top plate, it is difficult for the projection device to be in the sight of the audience as when the projection device is installed on the top plate, and it is displayed on the screen surface to the audience. The displayed image can be made easy to see.

[Brief description of drawings]

FIG. 1 is a perspective view of a teaching table main body according to an exemplary embodiment in a non-use state.

FIG. 2 is a perspective view of a use state of the teaching table main body according to the embodiment.

FIG. 3 is a front view of a usage state of the teaching table body according to the exemplary embodiment.

FIG. 4 is a cross-sectional view of a main part of the main body of the teaching table according to the exemplary embodiment with the movable top plate closed.

FIG. 5 is a cross-sectional view of a main part of the teaching table body according to the exemplary embodiment with the movable top plate open.

FIG. 6 is a block diagram showing a configuration of an electronic device provided in the teaching table body 1.

FIG. 7 is an explanatory diagram showing a state when the projection device is in use.

FIG. 8 is an explanatory diagram showing a state when the projection device is in use.

FIG. 9 is a cross-sectional view of a main part of a teaching table with a projection device according to a second example.

[Explanation of symbols]

1 Teaching console body 5 Top plate 5a Fixed top plate 5b movable top plate 9 Storage 11 Bending bracket 21 personal computer 28 Projector

Claims (7)

[Claims] 1. A teaching-apparatus with a projection device, comprising: a teaching-book main body having a box-shaped storage section, a projection apparatus stored in the storage section, and a projection-information supply apparatus for supplying projection information to the projection apparatus. The top plate of the accommodating portion is composed of a fixed top plate and a movable top plate that opens and closes with respect to the fixed top plate, and when the movable top plate is opened, the lens unit of the projection device is exposed to the outside and the screen is opened. A projection device equipped with a projection device that is capable of projecting information onto a surface. 2. The teaching pedestal with a projection device according to claim 1, wherein the projection device is fixed to a lower surface of the movable top plate, and the floor of the projection device is automatically opened when the movable top plate is opened. A projection device-equipped teaching machine characterized in that a height position from a surface and an inclination angle with respect to a floor surface are set to a predetermined height position and inclination angle which are set in advance. 3. The teaching pendant with a projection device according to claim 1, wherein the projection device is fixed to a projection device mounting plate provided in the storage section. 4. The teaching pedestal with a projection device according to claim 1, wherein a mirror that reflects light emitted from a lens portion of the projection device is provided in the storage unit. 5. The teaching pedestal with a projection device according to claim 1, wherein an optical axis of a ray of light projected from the teaching pendant main body and projected on the screen surface has a predetermined elevation angle with respect to a horizontal line. And a trapezoidal correction and an aspect ratio correction of the projection device are corrected to values according to the elevation angle. 6. The teaching pedestal with a projection device according to claim 1, wherein the projection device and the projection information supply device are preliminarily connected to a power source. 7. The teaching pedestal with a projection device according to claim 1, wherein between the movable top plate and another part of the storage section,
A power switch that is turned on and off in synchronization with opening and closing of the movable top plate is provided, and when the movable top plate is opened, power is automatically supplied to the projection device and the projection information supply device, and the movable top plate is closed. A teaching device equipped with a projection device, which automatically cuts off the power supply to the projection device and the projection information supply device when being turned on.