JP2011095303A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector that regularly projects a satisfactory image. <P>SOLUTION: The projector includes: a projection unit that projects an image; a casing that houses the projection unit; an incrementally extendable setting member that is attached to the casing; a support member that is included in the setting member and supports a surface of projection that projects the image; and a projection control unit that provides the image projected by the projection unit on the surface according to the level extended incrementally by the setting member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a projector.

  There is a small projector having an imaging function (see, for example, Patent Document 1). According to this projector, it is possible to project an image taken at an arbitrary place.

JP 2006-135894 A

  However, in the above-described projector, it is difficult to project a good image unless the projection location and the projection distance are taken into consideration.

  The projector of the present invention includes a projection unit that projects an image, a housing that stores the projection unit, a setting member that is attached to the housing and that can be extended in stages, and the setting member includes the image. A support member that supports the projection surface that projects the projection surface, and a projection control unit that forms the image projected by the projection unit on the projection surface in accordance with the extension of the setting member. To do.

  According to the projector of the present invention, it is possible to always project a good image.

It is a perspective view which shows the front surface of the digital camera which concerns on embodiment. 1 is a block diagram showing a system configuration of a digital camera according to an embodiment. It is a figure which shows the state which expand | deployed the setting member etc. in the digital camera which concerns on embodiment. It is the figure which looked at the state which developed the setting member etc. in the digital camera concerning an embodiment from the side. It is a figure which shows the state which pulled out the screen in the digital camera which concerns on embodiment. It is a figure which shows the state which fixed the lower end of the screen in the digital camera which concerns on embodiment. It is a figure which shows the state which installed the screen in the digital camera which concerns on embodiment. It is a flowchart which shows the projection process of the digital camera which concerns on embodiment. It is a figure which shows the state provided with the member for hold | maintaining the substitute of a screen in the digital camera which concerns on embodiment.

  A digital camera according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a front surface of a digital camera according to an embodiment. The digital camera 2 includes a housing 4. On the front surface of the housing 4, a photographing lens 6 that makes subject light incident, a projection window 8 that projects an image, and a flash window 10 that emits light that illuminates the subject are provided. ing. Further, on the upper surface of the housing 4, there are provided shutters 12 for instructing imaging and mounting portions 20 and 24 for mounting the setting members 18 and 22 to the housing 4. Further, attachment portions 28 and 32 for attaching the setting members 26 and 30 to the housing 4 are provided on the lower surface of the housing 4. Note that the setting members 18, 22, 26, and 30 are extendable members for setting the projection distance of an image, and FIG. 1 shows a state in which each setting member is folded. A storage unit 33 for storing a screen, which will be described later, is provided at the bottom of the housing 4.

  FIG. 2 is a block diagram illustrating a system configuration of the digital camera according to the embodiment. The digital camera 2 includes a CPU 40. The CPU 40 includes a shutter button 12, a power switch (not shown), a PJ button (not shown) for switching between a shooting mode for camera shooting and a projection mode for projector projection. An operating unit 42, an imaging device 44 composed of a CMOS, a CCD, etc. that captures subject light via the photographing lens 6 and generates an imaging signal, and that the setting member is opened to a predetermined position and constitutes the setting member A detection unit 45 that detects that an element to be pulled out to a predetermined position, a program storage unit 46 that stores a program for setting and controlling imaging, projection, and the like, captured image data, and image data of a projected image For example, a memory card 48 for storing the image, and a projection unit for projecting an image based on the image data stored in the memory card 48 or the like. Tsu door 50 is connected. Here, the projection unit 50 includes a power supply control unit 54 that turns on and off the LED 52 that is a light source, and a projection control unit 58 that performs display control of the LCOS 56 that displays an image to be projected.

  FIG. 3 is a diagram illustrating a state where setting members and the like are expanded in the digital camera 2 according to the embodiment. The setting members 18, 22, 26 and 30 are cylindrical members made of metal or the like, and a plurality of small diameter elements are slidably accommodated in the large diameter element. That is, in the setting member 18, the element 18b is accommodated in the element 18a, and the element 18c is accommodated in the element 18b. In the setting member 22, the element 22b is stored in the element 22a, and the element 22c is stored in the element 22b. In the setting member 26, the element 26b is accommodated in the element 26a, and the element 26c is accommodated in the element 26b. In setting member 30, element 30b is stored in element 30a, and element 30c is stored in element 30b.

  A fixed end 64 for fixing a support member 62 for setting the height of the projection surface is provided at the tip of the element 18c of the setting member 18. A fixed end 68 for fixing a support member 66 for setting the width of the projection surface is provided at the tip of the element 22c of the setting member 22. Further, at the tip of the element 26c of the setting member 26, a support member 70 for setting the width of the projection surface and a fixed end 74 for fixing the support member 72 for setting the diagonal length of the projection surface are provided. . Further, a support member 76 that sets the height of the projection surface and a fixed end 80 that fixes a support member 78 that sets the diagonal length of the projection surface are provided at the tip of the element 30c of the setting member 30. Yes. Here, the support members 62, 66, 70, 72, 76, and 78 are cylindrical members made of metal or the like, and a plurality of small diameter elements are slidably accommodated in the large diameter elements. The fixed end 64 is provided with a lock mechanism (not shown) for fixing the tips of the support members 66 and 78. Similarly, support members 72 and 76 are provided at the fixed end 68, a support member 62 is provided at the fixed end 74, and a lock mechanism (not shown) for fixing the tip of the support member 70 is provided at the fixed end 80.

  Further, the setting members 18 and 22 on the upper surface side of the digital camera 2 are set to be longer than the setting members 26 and 30 on the lower surface side, and when the setting members are unfolded, the fixed members 64, 68, 74, and 80 By setting a screen described later using the enclosed surface as a projection surface, a projection image can be projected onto the screen surface (see FIG. 4).

  Further, a deployment switch (not shown) for detecting that the mounting portion has rotated a predetermined angle is provided inside the mounting portions 20, 24, 28, and 32. The folded setting member is opened, and the deployment switch is turned on by rotating the attachment portion by a predetermined angle. When all the unfolding switches are turned on, the detection unit 45 detects that all of the setting members 18, 22, 26, 30 have been opened to a predetermined position. Further, the elements 18b, 22b, 26b, and 30b housed in the respective elements 18a, 22a, 26a, and 30a constituting the setting members 18, 22, 26, and 30 are pulled out to predetermined positions. A drawer switch (not shown) for detecting the above is provided. When the elements 18b, 22b, 26b, and 30b are pulled out from the elements 18a, 22a, 26a, and 30a, respectively, the drawer switch is turned on. When all the drawer switches are turned on, the detection unit 45 detects that all the elements 18b, 22b, 26b, and 30b have been pulled out to a predetermined position. Further, at the tips of the elements 18b, 22b, 26b, and 30b, there are provided pull-out switches (not shown) that detect that the elements 18c, 22c, 26c, and 30c housed therein are pulled out to predetermined positions. It has been. When the elements 18c, 22c, 26c, and 30c are pulled out from the elements 18b, 22b, 26b, and 30b, respectively, the drawer switch is turned on. When all the drawer switches are turned on, the detection unit 45 detects that all the elements 18c, 22c, 26c, and 30c have been pulled out to a predetermined position.

  Here, a state where the setting members 18, 22, 26, and 30 are each opened to a predetermined position is defined as a first stage. The size, focus, and the like of the image projected in the first stage are set based on the projection distance from the front surface of the housing 4 to the projection surface. The first-stage projection plane is configured as a plane surrounded by the fixed ends 64, 68, 74, and 80 in a state where the setting members 18, 22, 26, and 30 are opened to a predetermined position. A state in which the elements 18b, 22b, 26b, and 30b are pulled out from the elements 18a, 22a, 26a, and 30a constituting the setting members 18, 22, 26, and 30 to a predetermined position is a second stage. The size, focus, and the like of the image to be projected in the second stage are set based on the projection distance from the front surface of the housing 4 to the projection surface. Here, the projection surface of the second stage is configured as a surface surrounded by the fixed ends 64, 68, 74, 80 in a state where the elements 18b, 22b, 26b, 30b are pulled out to predetermined positions. Further, a state where the elements 18c, 22c, 26c, and 30c are pulled out from the elements 18b, 22b, 26b, and 30b to respective predetermined positions is a third stage. The size, focus, and the like of the image projected in the third stage are set based on the projection distance from the front surface of the housing 4 to the projection surface. Here, the third-stage projection surface is configured as a surface surrounded by the fixed ends 64, 68, 74, and 80 in a state where the elements 18c, 22c, 26c, and 30c are each pulled out to a predetermined position.

  FIG. 5 is a diagram illustrating a state in which the screen is pulled out in the digital camera 2 according to the embodiment. The screen 82 is a roll-type screen that can be wound into a cylindrical shape, and is stored in the storage unit 33 by folding the cylinder into three. The screen 82 is attached to the housing 4 via an elastic member 84 so as not to be lost. Hereinafter, a procedure for installing the screen 82 will be described. First, the operator opens the setting members 18, 22, 26, and 30 to predetermined positions, and further pulls out each element to a predetermined position when necessary. In FIG. 5, the setting members 18, 22, 26, 30 are each opened to a predetermined position, and the elements 18b, 22b, 26b, 30b and further the elements 18c, 22c, 26c, 30c are each pulled out to a predetermined position. The state of the third level is displayed. Next, the folded support members 62, 66, 70, 72, 76, 78 are opened, and their tips are fixed ends (one of the fixed ends 64, 68, 74, 80 corresponding to each support member). The projection plane is set by fixing to (see FIG. 3). Next, the screen 82 is pulled out from the storage portion 33 (see FIG. 5), the folded portion is opened, and the lower ends of the screen 82 are fixed to the lower fixed ends 74 and 80 (see FIG. 6). Next, the rolled-up screen 82 is spread and the upper ends of the screen 82 are fixed to the upper fixed ends 64 and 68 (see FIG. 7). Thereby, the screen 82 is installed on the projection surface.

  Next, projection processing in the digital camera 2 according to the embodiment will be described with reference to the flowchart shown in FIG. First, when a power switch (not shown) of the digital camera 2 is turned on (step S11), the CPU 40 detects that the setting members 18, 22, 26, 30 have been opened to a predetermined position in the detection unit 45, the elements 18b, 22b, It is detected that the elements 26b and 30b are pulled out to a predetermined position and that the elements 18c, 22c, 26c and 30c are pulled out to a predetermined position (step S12). For example, the folded setting members 18, 22, 26, 30 are opened by the operator, all the unfolding switches are turned on, the elements 18b, 22b, 26b, 30b are pulled out, all the drawing switches are turned on, and When the elements 18c, 22c, 26c, and 30c are pulled out and all the pull-out switches are turned on, it is detected that the elements 18c, 22c, 26c, and 30c are pulled out to a predetermined position (step S12).

  Next, the CPU 40 acquires projection information such as the size and focus of the image corresponding to the projection distance from the program storage unit 46 to the projection plane (step S13). For example, if it is detected that the elements 18c, 22c, 26c, and 30c are pulled out to a predetermined position, the projection of the image size, the focus, and the like based on the projection distance to the third projection plane Get information. Next, when the operator installs the screen 82 on the projection plane and presses a PJ button (not shown), a projection mode for projecting an image is set by the projection unit 50 (step S14). When the projection mode is set, the CPU 40 instructs the projection unit 50 to start projection, and projects an image on the screen 82 based on the projection distance to the projection surface (step S15). For example, in the case shown in FIG. 7, an image is projected based on the projection distance to the third stage projection surface.

  According to the digital camera 2 according to this embodiment, it is possible to always project a good image by installing the screen 82 drawn from the storage unit 33 on the projection surface. In addition, since the size, focus, and the like of the projection image are set based on the projection distance at each stage, it is possible to save the trouble of focusing. Further, since the projected image is displayed on the screen 82, the image can be viewed by a larger number of people than when the image is displayed on the liquid crystal display unit on the back of the digital camera 2. Moreover, since the screen 82 is tied to the housing 4 by the elastic member 84, the screen 82 can be prevented from being lost. Further, by storing the screen 82 in the digital camera 2, the inconvenience of carrying can be eliminated.

  In the above-described embodiment, projection is performed after obtaining projection information such as the image size and focus corresponding to the projection distance to the projection plane. However, the image size and focus are switched during projection. May be. For example, in the case where an image is projected on the first stage projection surface, if it is detected that the elements 18b, 22b, 26b, and 30b are further pulled out, the image is adjusted to the second stage projection plane. The size, focus, etc., may be switched. Thereby, the size of the image can be changed without turning off the power.

  In the above-described embodiment, the roll type screen 82 is folded, but the screen 82 may not be folded. In this case, the trouble of folding the screen 82 can be saved. Moreover, it is good also as not a roll type but the folding type which folds a planar screen. In this case, there is no need to provide a winding mechanism for winding the screen 82.

  In the above-described embodiment, the screen 82 is built in the digital camera 2 in advance, but the screen 82 may not be built. In this case, for example, holding members 90 and 92 that sandwich and fix paper or cloth may be provided so that an image can be projected using paper or cloth of an appropriate color and shape as a display unit (see FIG. 9).

  In the above-described embodiment, the screen 82 may be transmissive. Thus, the projected image can be viewed from the back of the screen, which is effective when the number of viewers is large.

  2 ... digital camera, 4 ... housing, 6 ... photographic lens, 8 ... projection window, 10 ... flash window, 12 ... shutter button, 18, 22, 26, 30 ... setting member, 20, 24, 28, 32 ... installation Part, 33 .. storage part.

Claims (4)

A projection unit for projecting an image;
A housing for storing the projection unit;
A setting member attached to the housing and capable of extending in stages;
A support member that is provided in the setting member and supports a projection surface that projects the image;
A projector comprising: a projection control unit configured to form an image on the projection plane by projecting the image according to a stage where the setting member is extended.   The projector according to claim 1, further comprising a storage unit that stores a screen installed on the projection surface.   The projector according to claim 2, wherein the screen is of a roll type that can be stored in the storage unit by winding.   The projector according to claim 2, wherein the screen is a foldable type that can be stored in the storage unit by being folded.

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