JP4770188B2 - projector - Google Patents

Description

  The present invention relates to a projector.

  Conventionally, OHP (Overhead Projector), a projector, etc. are known as an image projector which projects an enlarged picture on a screen etc. based on an image signal. In particular, the demand for projectors has increased in recent years as a tool for presentation as well as a tool for home theater.

  For example, an OHP as disclosed in Patent Document 1 is an example of an image projection apparatus that enables confirmation of a displayed image with a simpler configuration. On the upper surface of the OHP main body described in Patent Document 1, a half mirror that reflects the mounting table and reflects the OHP sheet is provided so as to be freely opened and closed. With such a configuration, when the half mirror is opened, the description content of the OHP sheet is reflected so that the image state can be visually recognized.

  Here, when a presentation is performed using a conventionally used image projection apparatus, the enlarged image is projected on the screen with the room illumination darkened. For this reason, the method for the operator to confirm the passage of time during the presentation is a burden on the parties concerned, such as a method for the assistant to ring the chime.

Therefore, as shown in Patent Document 2 or Patent Document 3, an image projecting apparatus has been developed that projects time information to one corner of a screen to display information on the passage of time during a presentation. The projector described in Patent Document 2 has a time management function that generates current time, elapsed time, and the like as an electrical signal, and the control unit includes time information from the time management function and image information based on the image signal. Is projected on the screen. In the OHP described in Patent Document 3, the time information display device is a mounting table for the OHP sheet and is provided in a part of the projection light incident area, and the time information is projected on the screen together with the description of the OHP sheet. It is like that.
Japanese Patent Laid-Open No. 10-68999 JP 2001-109064 A JP 9-34010 A

  However, in the image projection apparatus described in Patent Document 2 or Patent Document 3, time information is continuously displayed in one corner of the screen during the presentation. There was a problem that they could not concentrate on the presentation.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a projector capable of performing time confirmation without disturbing the presentation.

In order to solve the above-mentioned problem, the invention according to claim 1 is a projector,
An image input unit for inputting predetermined image information;
A projection unit that has a projection lens facing the screen and projects an image on the screen based on image information input to the image input unit;
A display unit having a time management unit for managing the current time and the remaining time, and displaying the managed time information on a display screen;
From the substantially plate-like plate-like member that covers the display portion and has a reflection portion that reflects the image displayed on the display screen in the projection direction, and the display portion provided on the side of the plate-like member A side plate that shields the light, and a lid comprising:
Opening and closing means for opening and closing the lid with the rear end edge of the display unit as an axis;
An operation unit for inputting an instruction to open and close the lid by the opening and closing unit and to operate time information to be displayed on the display unit;
A control unit that controls opening / closing of the lid by the opening / closing means and time information to be displayed on the display unit based on an instruction input by the operation unit;
Equipped with a,
The lid can be set to open after a predetermined time has elapsed since the start of the projection program .

The invention according to claim 2 is a projector,
An image input unit for inputting predetermined image information;
A projection unit that projects an image on a screen based on image information input to the image input unit;
A display unit having a time management unit for managing time information and displaying the time information on a display screen extending in the projection direction;
A lid having a reflection part for reflecting the image displayed on the display screen in the projection direction;
Equipped with a,
The lid can be set to open after a predetermined time has elapsed since the start of the projection program .

According to a third aspect of the present invention, in the projector according to the second aspect,
Opening and closing means for opening and closing the lid;
An operation unit for inputting an instruction to operate time information to be displayed on the opening and closing means and the display screen;
A control unit that controls opening / closing of the lid by the opening / closing means and time information to be displayed on the display unit based on an instruction input by the operation unit;
It is characterized by providing.

The invention according to claim 4 is the projector according to claim 2 or 3,
The lid is composed of a plate-like member having the reflecting portion and a side plate that shields light from the display portion provided on a side of the plate-like member.

  According to the first aspect of the present invention, the lid can be opened and closed based on the instruction input by the operation unit, and the time information displayed on the display screen of the display unit is reflected by the reflection unit by opening the lid. Therefore, the time can be confirmed by the operator without disturbing the presentation.

  In addition, since the opening / closing of the lid can be instructed by operating the operation section, the operator can easily confirm the time information reflected by the reflection section of the lid at a desired timing.

  Furthermore, since the time information to be displayed and the opening / closing of the lid can be set as appropriate, the lid can be opened at a predetermined time or the display of the time information can be switched. Therefore, by adjusting the set time to the presentation schedule, the operator can easily and reliably notice that the end time of the presentation is approaching.

  According to the second aspect of the present invention, since the lid having the reflecting portion that reflects the image of the display screen of the display portion is provided, the lid is opened toward the front of the projector, thereby being positioned in front of the projector. The operator can easily confirm the time information reflected by the lid without disturbing the presentation.

  According to the third aspect of the present invention, the opening / closing means for opening / closing the lid and the operation section for inputting an instruction for operating time information displayed on the opening / closing means and the display section are provided. The opening / closing of the lid and the time information to be displayed on the display unit can be instructed. Therefore, the operator can confirm the time information at a desired timing.

  According to the fourth aspect of the present invention, the time information displayed on the display unit can be reflected forward by opening the lid, and the light from the display unit can be prevented from leaking to the side. Therefore, it is possible to check the time while preventing the audience from losing attention during the presentation.

Embodiments according to the projector of the present invention will be described below with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.
[First embodiment]
FIG. 1 is a perspective view of the projector 1 in the present embodiment.

  The external shape of the projector 1 is formed in a substantially rectangular parallelepiped shape, and a projection unit 2 (see FIG. 2) projects an image based on the input image data onto a screen (not shown) provided forward. Is provided. The projection unit 2 includes a projection lens 3 provided so as to penetrate the front surface of the projector 1.

  On the upper surface of the projector 1, a display unit 4 for displaying time information on a display screen extending in the projection direction is provided. The display unit 4 is provided with a backlight (not shown) composed of an LED or the like, and is lit to display an image on the display screen when the projector 1 projects an image. The display unit 4 includes a time management unit 5 (see FIG. 2) that performs time management. Here, examples of the time management include current time, timing start time, elapsed time, and remaining time, but the time management unit 5 of the present embodiment manages the current time and the remaining time. Yes. Accordingly, the display mode of the time information displayed on the display screen of the display unit 4 includes the “first display mode” for displaying the current time as shown in FIG. 1 and the remaining time of the set time as shown in FIG. The “second display mode” to be displayed and the “third display mode” in which the current time display is switched to the remaining time display after a predetermined time elapses as shown in FIG. 4 can be selected as appropriate. Here, in the present embodiment, the time information displayed on the display screen of the display unit 4 can be selected from three display modes. However, the time information to be displayed is not limited to the above example and can be changed as appropriate. is there.

  A substantially plate-like lid 6 that covers the display unit 4 is attached to the rear end of the display screen of the display unit 4 so as to be openable and closable around the rear end edge as an axis center. The lid 6 is provided with an opening / closing means 7 (see FIG. 2) including a motor and a gear for opening and closing the lid 6, and when a predetermined time has passed or an instruction from the operation unit 9 described later is given, The opening / closing means 7 opens and closes the lid 6 by, for example, driving a motor and rotating a gear. A surface of the lid 6 facing the display screen of the display unit 4 is provided with a reflection unit 8 made of a reflective material such as a mirror.

  On the upper surface of the projector 1 and in the vicinity of the display unit 4, an operation unit 9 for inputting an instruction by the operator is provided. The operation unit 9 includes three switches so that the operator can easily open and close the lid 6 and select a display mode for time information displayed on the display screen of the display unit 4. For example, the operation unit 9 in the present embodiment includes a first switch 9 a that instructs opening / closing of the lid 6, a second switch 9 b that instructs a display mode of time information displayed on the display screen of the display unit 4, and the lid 6. And a third switch 9c for inputting various set times such as a switching time when the above-mentioned “third display mode” is selected.

  Here, the operation unit 9 in this embodiment is provided with a plurality of switches in the vicinity of the display unit 4, but can be changed as appropriate. For example, the operation unit 9 may be provided on a remote control corresponding to the projector 1. Good.

  In addition, the projector 1 includes an image input unit 10 (see FIG. 2) that functions as an image input unit and that receives image data to be projected onto a screen by being electrically connected to, for example, a personal computer. .

  FIG. 2 is a block diagram showing a control configuration of the projector 1.

  As shown in FIG. 2, the projector 1 includes a control unit 11 that is electrically connected to and controls an image input unit 10, a projection unit 2, an operation unit 9, a display unit 4, an opening / closing means 7, and the like. It has been. The control unit 11 includes a CPU, a ROM, a RAM (all not shown), and the like, and develops various processing programs such as a projection program recorded in the ROM on the RAM and executes the processing program by the CPU.

  The control unit 11 controls the projection unit 2 so as to project an image based on the image data input by the image input unit 10 onto a screen based on a projection program.

  Further, the control unit 11 uses the opening / closing means 7 when the first switch 9a is pressed or when the set time set by the third switch 9c elapses based on the instruction input by the operation unit 9. The lid 6 is opened and closed. Further, the control unit 11 causes the display unit 4 to display time information managed by the time management unit 5 based on an instruction input from the operation unit 9. At this time, when the display mode of the time information is selected by the second switch 9b as "first display mode", the current time is displayed, and when the "second display mode" is selected, the remaining time of the set time is displayed as " In the “third display mode”, the current time display is switched to the remaining time display after a predetermined time has elapsed, and the time information is displayed.

  Next, the operation of the projector 1 will be described.

  First, the projector 1 is turned on to turn on the backlight of the display unit 4. Further, image data to be projected is input by the image input unit 10.

  Subsequently, the operator presses the first switch 9 a of the operation unit 9 and inputs an instruction to open the lid 6. Alternatively, the opening / closing time of the lid 6 is set by pressing the third switch 9c. Here, the input opening instruction or set time is sent to the control unit 11, and the control unit 11 controls the opening / closing means 7 so as to open the lid 6 at a predetermined time. When the lid 6 is opened, the image on the display screen of the display unit 4 is reflected by the reflecting unit 8 toward the front of the projector 1.

  Subsequently, the operator uses the operation unit 9 to select a display mode for time information to be displayed on the display screen of the display unit 4. Specifically, the operator depresses the second switch 9 b and selects a display mode for time information displayed on the display screen of the display unit 4. When the “first display mode” is selected, the current time is displayed as shown in FIG. When the “second display mode” is selected, the operator sets the presentation time with the third switch 9c of the operation unit 9, and the remaining time of the set time is displayed as shown in FIG. When the “third display mode” is selected, the operator sets the switching time with the third switch 9c of the operation unit 9, and the time information displayed as shown in FIG. Switch to the remaining time display. Here, the display unit 4 in FIG. 4 shows a state after switching to the remaining time display.

The control unit 11 receives various instructions and controls to display the time information on the display screen of the display unit 4, and then starts the projection program. The projection unit 2 displays an image based on the input image data on the screen. Project.

  As described above, according to the projector 1 according to the present invention, the lid 6 can be opened and closed by the operator's intention, and the time information displayed on the display unit 4 is reflected by the reflecting unit 8 by opening the lid 6. The time can be confirmed by the operator.

  Further, the lid 6 can be continuously opened from the start of the projection program, or the lid 6 can be opened after a predetermined time has elapsed from the start of the projection program, and the operator can select the lid 6 at a desired timing. The time information reflected by the reflecting portion 8 can be easily confirmed.

Furthermore, since the time information to be displayed and the opening time of the lid 6 can be set as appropriate, the lid 6 can be opened at a predetermined time or the display mode of the time information can be switched. Therefore, by adjusting the set time to the presentation schedule, the operator can easily and reliably notice that the end time of the presentation is approaching.
[Second Embodiment]
FIG. 5 is a perspective view of the projector 20 according to the present embodiment.

  The projector 20 of the present embodiment is different from the first embodiment only in the shape of the lid, and other control configurations are the same as those in the first embodiment. Therefore, only different points will be described below.

  At the rear end of the display screen of the display unit 4 on the upper surface of the projector 20, a lid 21 that covers the display unit 4 from above and from the side is attached so as to be openable and closable around the rear edge. . The lid 21 is composed of a plate-like member 22 facing the display screen of the display unit 4 and provided with the reflecting portion 8, and a side fan 23 having a substantially fan-like side view provided on the side of the plate-like member 22. Has been. The lid 21 is provided with the opening / closing means 7 as in the first embodiment, and is opened and closed after a predetermined time has elapsed or when there is an instruction from the operation unit 9.

  The side plate 23 of the lid 21 is housed in the projector 20 when the lid 21 is closed. However, when the lid 21 is opened, the side plate 23 blocks the light path of the backlight of the display unit 4 and prevents light from leaking. .

  By providing such a lid 21, the lid 21 reflects the time information displayed on the display unit 4 toward the front, so that the operator can easily confirm the time information at a desired timing. At the same time, since the side plate 23 prevents light from leaking from the display unit 4, it is possible to prevent the attention of the audience from being distracted.

It is a perspective view which shows the projector in 1st embodiment. It is a block diagram which shows the control structure of the projector in 1st embodiment. It is a perspective view which shows the projector in 1st embodiment. It is a perspective view which shows the projector in 1st embodiment. It is a perspective view which shows the projector in 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,20 Projector 2 Projection part 3 Projection lens 4 Display part 5 Time management part 6,21 Lid 7 Opening / closing means 8 Reflection part 9 Operation part 10 Image input part 11 Control part 22 Plate-shaped member 23 Side plate

Claims (4)

An image input unit for inputting predetermined image information;
A projection unit that has a projection lens facing the screen and projects an image on the screen based on image information input to the image input unit;
A display unit having a time management unit for managing the current time and the remaining time, and displaying the managed time information on a display screen;
From the substantially plate-like plate-like member that covers the display portion and has a reflection portion that reflects the image displayed on the display screen in the projection direction, and the display portion provided on the side of the plate-like member A side plate that shields the light, and a lid comprising:
Opening and closing means for opening and closing the lid with the rear end edge of the display unit as an axis;
An operation unit for inputting an instruction to open and close the lid by the opening and closing unit and to operate time information to be displayed on the display unit;
A control unit that controls opening / closing of the lid by the opening / closing means and time information to be displayed on the display unit based on an instruction input by the operation unit;
Equipped with a,
The projector is characterized in that the lid can be set to open after a predetermined time has elapsed since the start of the projection program . An image input unit for inputting predetermined image information;
A projection unit that projects an image on a screen based on image information input to the image input unit;
A display unit having a time management unit for managing time information and displaying the time information on a display screen extending in the projection direction;
A lid having a reflection part for reflecting the image displayed on the display screen in the projection direction;
Equipped with a,
The projector is characterized in that the lid can be set to open after a predetermined time has elapsed since the start of the projection program . Opening and closing means for opening and closing the lid;
An operation unit for inputting an instruction to operate time information to be displayed on the opening and closing means and the display screen;
A control unit that controls opening / closing of the lid by the opening / closing means and time information to be displayed on the display unit based on an instruction input by the operation unit;
The projector according to claim 2, further comprising:   The said lid | cover consists of a plate-shaped member provided with the said reflection part, and a side plate which shields the light from the said display part provided in the side of the said plate-shaped member, The Claim 2 or 3 characterized by the above-mentioned. Projector.

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