JP2012037674A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector with a simple structure capable of changing a projection direction.SOLUTION: A box body 10 has a projection lens 2 for projecting an image. The box body 10 has a cover 3. The cover 3 is designed to be movable between a shield position for shielding the projection lens 2 and an exposure position for exposing the lens 2. The cover 3 has an opening 31 to face the projection lens 2 when the cover 3 is at the shield position. A lid which turns in the inner and outer directions of the box body 10 is arranged on the opening 31. The lid 32 has a reflector on the face facing the projection lens 2 and turns in the inner and outer directions of the box body 10 from the position of the opening 31. The projection direction is changed by reflecting the image projected from the projection lens 2 on the reflector.

Description

  The present invention relates to a projector that projects an image.

  A projector (for example, Patent Document 1) is used when an image is displayed on a screen in a conference room or an exhibition hall to give a presentation.

  The projector includes a rectangular parallelepiped box, and a light source and a display device are housed inside the box. A projection lens is provided on one surface of the box so as to penetrate inside and outside. The light source emits light to the display device to project an image onto the screen. The display device forms an image on the surface and transmits light from the light source. The light transmitted through the display device is projected to the outside through the projection lens.

  The projector further includes a cover for protecting the projection lens. As a cover, there is a cover that is movably attached to the outside of the box. The cover moves between a shielding position for shielding the projection lens and an exposure position for exposing the projection lens.

  The projector is generally arranged so that the optical axis of the projection lens is perpendicular to the screen, and an image projected from the projection lens is displayed on the screen. For this reason, when a projector is used, arrangement | positioning with respect to the screen of a projector is restrict | limited.

When the arrangement of the projector is restricted, hot air exhausted from the projector becomes a problem.
A blower is further housed inside the box. An intake port and an exhaust port are provided in the box. The blower sucks external air from the intake port, air-cools the light source, and exhausts the air heated by the light source from the exhaust port. In general, the exhaust port is often provided on one surface different from the one surface provided with the projection lens.

  There is a possibility that the viewer is in the vicinity of the projector except for the vicinity of the one surface provided with the projection lens, and in the vicinity of the exhaust port. When there is a viewer near the exhaust port, hot air from the exhaust port may hit the viewer and make the viewer uncomfortable.

Therefore, by changing the direction of projecting the image to a direction other than the optical axis direction of the projection lens, the image projection direction and the hot air exhaust direction can be matched, and hot air is applied to the viewer. Can not be.
A projector that can change the image projection direction in various directions is disclosed in Patent Document 2.

  The projector described in Patent Document 2 includes a frame and a reflecting mirror in addition to a light source, a display device, and a projection lens. The frame has a shape in which circular openings that communicate with both end faces of the cylinder are provided. The projection lens is fitted into the opening and supported by the frame. The reflecting mirror is fixed to one end face of the frame and reflects the light projected from the projection lens. For example, when this projector is disposed on the floor, the optical axis of the projection lens is perpendicular to the floor.

  The reflecting mirror reflects the light projected from the projection lens in a direction perpendicular to the optical axis of the projection lens. The frame is configured to be rotatable around the optical axis of the projection lens. For this reason, the reflecting mirror rotates around the optical axis of the projection lens with the rotation of the frame, and reflects the image in any direction perpendicular to the optical axis.

  When the reflecting mirror rotates while the display device is fixed, the direction of the image projected on the screen changes depending on the position of the reflecting mirror. In the projector described in Patent Document 2, in order to prevent the orientation of the image from changing, when the reflecting mirror is rotated, the display device is rotated by the same rotation amount as the rotation amount of the reflecting mirror.

JP 2009-42371 A JP 2002-90879 A

  However, since the projector described in Patent Document 2 requires a frame, a place for arranging the frame is required around the projection lens, and there is a problem that the projector becomes large. Further, since a rotation mechanism for rotating the display device is necessary, there is a problem that the configuration of the projector is complicated.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a projector capable of changing the projection direction with a simple configuration.

  A projector according to the present invention includes a projection lens provided in a box for projecting an image, and a cover movable between a shielding position that shields the projection lens and an exposure position that exposes the projection lens. The cover includes an opening that faces the projection lens when in the shielding position, and a reflecting mirror that is disposed in the opening so as to be able to rotate in the inner and outer directions of the box and reflects the projected image. It is characterized by that.

  In the present invention, the opening and the reflecting mirror are provided in the cover that is movable between the shielding position that shields the projection lens provided in the box and the exposure position that is exposed. The opening faces the projection lens when the cover is in the shielding position. The reflecting mirror is disposed in the opening and is rotatable in the inside and outside of the box, and reflects the image projected from the projection lens to change the projection direction.

  A projector including a cover already exists, and since an opening and a reflecting mirror are only provided in a cover provided in an existing projector, the size is the same as that of an existing projector, and the configuration is simple. Moreover, since the cover is only improved, the manufacturing cost is low. Furthermore, by matching the projection direction with the direction in which the air heated by the light source is exhausted, hot air is not applied to the viewer and the viewer is not uncomfortable.

  In the projector according to the aspect of the invention, the cover may further include a rotation shaft that is passed between peripheral edges of the opening and pivotally supports the reflecting mirror.

  In the present invention, the rotating shaft is passed between the peripheral edges of the opening and pivotally supports the reflecting mirror. Therefore, the reflecting mirror is rotated around the axis of the rotating shaft and projects an image in various directions. be able to.

  In the projector according to the aspect of the invention, the cover includes a plurality of the rotation shafts, and the reflector includes a plurality of attachment portions that are detachably and rotatably attached to the plurality of rotation shafts. Features.

  In the present invention, the opening is provided with a plurality of rotation shafts, and the reflecting mirror has a plurality of attachment portions that are detachably and rotatably attached to the rotation shaft. By attaching a corresponding attachment portion to one rotation axis among the plurality of rotation axes, the reflecting mirror is rotated around one rotation axis and projects an image in various directions. Moreover, by attaching a corresponding attachment portion to another rotation shaft, the reflecting mirror is rotated around the other rotation shaft and projects an image in various directions. By providing a plurality of rotation axes, an image can be projected in more directions.

  In the projector according to the aspect of the invention, the attachment portion protrudes from a peripheral portion of the reflecting mirror, has a support column portion that supports the reflecting mirror, and a shape in which a part in the circumferential direction of the ring is cut off, It has a fitting part which is provided at the tip of the support pillar part so that the axial direction of the ring is parallel to the reflecting mirror, and is fitted to the rotating shaft.

  In the present invention, the attachment portion has a support column portion and a fitting portion. The support column portion protrudes from the periphery of the reflecting mirror and supports the reflecting mirror. The fitting portion has a shape obtained by cutting off a part of the annular ring in the circumferential direction, and is provided at the tip of the support column portion. The axial direction of the ring is parallel to the reflecting mirror. The fitting portion has a shape in which a part of the ring is cut off, and can be attached to and detached from the rotating shaft by using the cut portion. It can be rotated.

  In the projector according to the aspect of the invention, at least one protrusion provided on the inner peripheral surface of the fitting portion and a peripheral surface on which the fitting portion of the rotation shaft is fitted and engaged with the protrusion. And having a plurality of recesses.

  In the present invention, at least one protrusion is provided on the inner peripheral surface of the fitting portion, and a plurality of concave portions are provided on the peripheral surface of the rotating shaft into which the fitting portion is fitted. For this reason, the rotating reflecting mirror can be positioned at a position where the protrusion and the recess are engaged. Therefore, while the image is projected, the position of the reflecting mirror is difficult to shift and the image is not easily disturbed.

  In the projector according to the aspect of the invention, the opening and the reflecting mirror have a rectangular shape, the cover has two rotation shafts, and the rotation shafts are both passed in the short side or the long side of the opening. It is characterized by.

  In the present invention, the opening and the reflecting mirror have a rectangular shape, and two rotation shafts are passed in the short or long direction of the opening. When the rotation axis is passed in the short direction, the projection direction can be changed in one direction in the longitudinal direction and in the other direction. Similarly, when the rotation axis is passed in the longitudinal direction, the projection direction can be changed in one direction in the short direction and in the other direction.

  The projector according to the present invention includes a detection unit that detects whether or not the opening is open, and a reversal that reverses a mirror image of the image projected from the projection lens when the detection unit detects that the opening is open. And a section.

  In the present invention, the detection unit detects whether the reflecting mirror is rotated and the opening is open. The reversing unit reverses the mirror image of the image projected from the projection lens when the detection unit detects the opening of the opening.

  Since the image reflected by the reflecting mirror is mirror-inverted, when the image is projected using the reflecting mirror, it is necessary to invert the image to be projected in advance. When the detection unit detects the opening of the opening, the reversing unit reversely mirrors the image projected from the projection lens, thereby correctly projecting the image.

  A projector according to the present invention includes: a reception unit that receives an operation for correcting an image reflected by the reflecting mirror and distorted in a trapezoid shape; a storage unit that stores an operation received by the reception unit; and the opening is opened. A detection unit that detects whether or not the detection unit is open, and a reproduction unit that reproduces an operation stored in the storage unit when it is detected that the detection unit is open.

  In the present invention, the accepting unit accepts an operation for correcting an image distorted in a trapezoidal shape from the user. The storage unit stores the correction operation received from the user by the receiving unit. The detection unit detects whether or not the opening is open. The reproduction unit reproduces the operation stored in the storage unit when the detection unit detects the opening of the opening.

  Thus, when the user rotates the reflecting mirror to open the opening so as to project an image using the reflecting mirror, the correction operation previously received from the user is performed. This eliminates the trouble of correcting a distorted image.

  According to the present invention, the cover that is movable between the shielding position that shields the projection lens and the exposure position that is exposed is arranged with an opening, and the opening can be rotated in the inside and outside of the box and projected. Since a reflecting mirror that reflects an image is provided, a projector that can change the projection direction with a simple configuration can be realized.

It is an internal block diagram of the projector which concerns on Embodiment 1 of this invention. It is a perspective view of a projector in case a cover exists in an exposure position. It is a perspective view of a projector when a cover is in a shielding position. It is a perspective view of a projector when an opening is opened. It is a front view of a cover. It is a front view of the opening provided in the cover. It is a plane sectional view of a cover. It is side surface sectional drawing of a cover. It is explanatory drawing explaining opening and closing of a lid | cover. It is an enlarged view of a fitting part. It is sectional drawing of a rotating shaft. It is explanatory drawing explaining the use condition of a projector in case a cover exists in an exposure position. It is explanatory drawing explaining the use condition of a projector when a cover exists in a shielding position. It is explanatory drawing explaining the image of the screen with respect to the opening / closing angle of a lid | cover. It is a block diagram which shows the structure of a projector. It is a flowchart which shows the operation | movement procedure of a control part. It is a front view of the cover of the projector which concerns on Embodiment 2 of this invention. It is a front view of the opening provided in the cover. It is a plane sectional view of a cover. It is side surface sectional drawing of a cover.

(Embodiment 1)
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is an internal configuration diagram of a projector according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the projector when the cover is in the exposed position, and FIG. 3 is a perspective view of the projector when the cover is in the shielding position. is there.

  The projector 1 includes a rectangular parallelepiped box 10. On one surface of the box body 10, a recess 11 opened in the short direction is provided near one short side. A cylindrical projection lens 2 is fixed to the center of the recess 11 with one side protruding outside the box 10. The projection length of the projection lens 2 is shorter than the recess of the recess 11.

  In the following description, the projecting side of the projection lens 2 in the box 10 is the front, the opposite side is the rear, the longitudinal direction of the front surface of the box 10 is the left-right direction, and the short direction is the up-down direction.

  The cover 3 has a U-shaped cross section and is fitted to the front surface of the box 10. The cover 3 is movable in the left-right direction along the front surface of the box body 10, and exposes the projection lens 2 as shown in FIG. 2 and shields it as shown in FIG. The position of the cover 3 that exposes the projection lens 2 is the exposure position, and the position of the cover 3 that is shielding is the shielding position. The cover 3 has a rectangular shape when viewed from the front side, and covers the entire recess 11 when in the shielding position.

  A display device 12, a mirror 13, and a light source 14 are housed inside the box 10. As shown in FIG. 1, the display device 12 and the mirror 13 are sequentially installed on the rear side of the projection lens 2 along the optical axis direction of the projection lens 2. The light source 14 is installed on the left side of the mirror 13 when viewed from the front side of the projector 1.

  The light source 14 emits light for projecting an image toward the mirror 13. The mirror 13 reflects the light from the light source 14 toward the display device 12. The display device 12 forms an image on the surface and transmits the light reflected by the mirror 13. The light transmitted through the display device 12 is projected outside the box 10 through the projection lens 2.

  An intake port 15 and an exhaust port 16 are provided on the right side surface and the left side surface of the box body 10, respectively. A blower 4 a is installed inside the intake port 15, and a blower 4 b is installed inside the exhaust port 16. The blower 4 a sucks air outside the box 10 from the air inlet 15, sends wind to the light source 14, and air-cools the light source 14. The blower 4 b exhausts the air heated by the light source 14 from the exhaust port 16.

FIG. 4 is a perspective view of the projector 1 when the opening is opened. In the projector 1 shown in FIG. 4, the cover 3 is in the shielding position. A rectangular opening 31 is provided on the front surface of the cover 3. A rectangular lid 32 is disposed in the opening 31 so as to be able to open and close the opening 31. The sizes of the opening 31 and the lid 32 are substantially the same.
The feature of the present invention lies in the structure of the cover 3 and will be described in detail below.

  FIG. 5 is a front view of the cover 3. The cover 3 is provided with the lid 32 as described above. On the front surface of the lid 32, gripping portions 33, 33 are provided at the center of each of the left side and the right side. The grip portion 33 is a handle that the user hooks with a finger when opening the lid 32.

  FIG. 6 is a front view of the opening 31 provided in the cover 3. Rotating shafts 34 and 34 having a cylindrical shape are provided in the opening 31 so as to pass in the vertical direction near the left side and the right side of the opening 31.

  FIG. 7 is a plan sectional view of the cover 3. On the rear surface of the lid 32, a rectangular reflecting mirror 36 is provided in the central portion, and two attachment portions 35 are provided in the vicinity of the left side and the right side of the reflecting mirror 36.

  The attachment portion 35 includes a support column portion 351 and a fitting portion 352. The support column portion 351 is erected on the rear surface of the lid 32. The fitting part 352 has a shape in which a part in the circumferential direction of the ring is cut off. The fitting part 352 is fixed to the tip of the support column part 351 so that the axial direction of the ring is parallel to the reflecting mirror 36.

  In the fitting portion 352, the cut portion is located on the opposite side of the boundary surface with the support column portion 351 with respect to the center. The inner diameter of the fitting portion 352 is substantially the same as the outer diameter of the rotation shaft 34. The lid 32 is attached to the rotation shaft 34 by fitting the fitting portion 352 to the rotation shaft 34.

FIG. 8 is a side sectional view of the cover 3. Two attachment portions 35, 35 are attached to one rotation shaft 34.
The number of attachment portions 35 attached to one rotation shaft 34 is not limited to two. The number of attachment portions 35 may be one, or may be three or more. Further, it is not necessary that the same number of attachment portions 35 be attached to the rotation shafts 34 and 34, respectively.

  FIG. 9 is an explanatory view for explaining opening and closing of the lid 32. In FIG. 9, the broken line portion indicates a state where the lid 32 is closed, and the solid line portion indicates a state where the lid 32 is opened.

  When the lid 32 is closed, all the attachment portions 35, 35, 35, 35 are attached to the rotation shafts 34, 34. When the user opens the lid 32, the user removes the attachment portions 35, 35 on the same side as the gripping portion 33 from the rotation shaft 34 by pulling one gripping portion 33 on the front surface of the lid 32 and removes the lid 32 from the other side. It is rotated around the axis of the rotation shaft 34 on the side.

  FIG. 10 is an enlarged view of the fitting portion 352. A plurality of protrusions 38, 38,... Are arranged in parallel on the inner peripheral surface of the fitting portion 352 in the circumferential direction. The plurality of protrusions 38, 38,... Are arranged in parallel at predetermined angles (for example, 15 degrees) with respect to the center of the fitting portion 352.

  FIG. 11 is a cross-sectional view of the rotating shaft 34. A plurality of recesses 39, 39,... Are arranged on the outer peripheral surface of the rotation shaft 34 at equal intervals. The plurality of recesses 39, 39,... Are circumferentially provided at the same predetermined angle as the projection 38 with respect to the axis of the rotation shaft 34.

The lid 32 is positioned at a position where the plurality of protrusions 38, 38,... And the plurality of recesses 39, 39,.
Note that at least one protrusion 38 may be provided, and two or more recesses 39 may be provided. Therefore, the number of the protrusions 38 and the recesses 39 is not limited.

  Further, the positioning of the lid 32 can be realized by other configurations. For example, a screw hole is provided in the fitting portion 352 toward the center, and the screw passing through the screw hole is tightened to press the rotating shaft 34 against the inner peripheral surface of the fitting portion 352 facing the screw. The joint portion 352 may not rotate the rotation shaft 34 and may position the lid 32. In this case, the screw is loosened when the lid 32 is rotated.

  FIG. 12 is an explanatory diagram for explaining the usage state of the projector 1 when the cover 3 is in the exposed position. A screen 5 is arranged in front of the projector 1. On the screen 5, an image is projected from the projector 1, and the projected image is displayed. When the projector 1 is used with the cover 3 in the exposed position, the projector 1 is arranged so that the optical axis of the projection lens 2 is perpendicular to the screen 5 as shown in FIG.

  When the projector 1 is used in a state where the cover 3 is in the exposed position, a viewer who listens to a presentation or the like by looking at an image projected on the screen 5 can use the projector 1 except for the vicinity of the front surface where the projection lens 2 is provided. There is a possibility of being in the vicinity and in the vicinity of the exhaust port 16 provided on the left side surface of the box 10. When there is a viewer in the vicinity of the exhaust port 16, hot air from the exhaust port 16 may hit the viewer and make the viewer uncomfortable.

  FIG. 13 is an explanatory diagram for explaining the usage state of the projector 1 when the cover 3 is in the shielding position. When the projector 1 is used with the cover 3 in the shielding position, the lid 32 is opened and the projector 1 is positioned at a predetermined opening / closing angle. In FIG. 13, since the screen 5 is disposed on the left side of the projector 1, the left mounting portions 35 and 35 are removed from the rotation shaft 34 on the same side, and the lid 32 is rotated around the axis of the right rotation shaft 34. It is moved and positioned at an opening / closing angle of 45 degrees with respect to the front surface of the box 10.

  The image projected from the projection lens 2 is reflected leftward by the reflecting mirror 36 provided on the rear surface of the lid 32 and projected onto the screen 5. In this case, since the projection direction of the image matches the exhaust direction of the exhaust port 16 provided on the left side surface of the box body 10, the viewer is not near the exhaust port 16, and the exhausted hot air is viewed. It will not hit the person.

  In addition, an image can be projected also in the diagonally forward left direction by setting the opening / closing angle of the lid 32 to 45 degrees or more. Further, the right mounting portions 35 and 35 are removed from the rotation shaft 34 on the same side, and the lid 32 is rotated around the axis of the left rotation shaft 34, thereby causing the projector 1 to move rightward and diagonally forward to the right. Can also project images.

  Further, when the cover 32 is opened with the cover 3 in the shielding position, the opening 31 and the projection lens 2 face each other. When the projector 1 is used with the cover 3 in the shielding position, the size of the mounting portion 35 is reduced so that the shadow of the mounting portion 35 is not reflected on the screen 5, and the mounting portion 35 is the rear surface of the lid 32. It is devised so that it is installed near the periphery.

  FIG. 14 is an explanatory diagram for explaining an image of the screen 5 with respect to the opening / closing angle of the lid 32. FIG. 14A shows the usage state of the projector 1 when the cover 3 is in the shielding position. The screen 5 is disposed on the left side of the projector 1. The lid 32 is rotated around an axis of a rotation shaft 34 on the right side of the cover 3 to project an image on the screen 5 using the reflecting mirror 36 on the rear surface, and is positioned at a certain opening / closing angle. Yes.

  The lid 32 indicated by a broken line forms an angle of 45 degrees with the front surface of the box 10, and the lid 32 indicated by a solid line forms an angle larger than 45 degrees (for example, 50 degrees).

  FIG. 14B shows an image reflected by the reflecting mirror 36 provided on the rear surface of the lid 32 shown by a solid line in FIG. 14A and projected onto the screen 5. When the opening / closing angle of the lid 32 exceeds 45 degrees, the projected image is distorted into a trapezoidal shape.

When an image is projected using the reflecting mirror 36, the image component in the direction parallel to the installation surface of the projector 1 on the screen 5 is mirror-inverted.
As shown in FIG. 14B, the projector 1 has a function of correcting an image distorted in a trapezoidal shape and a function of reversing the image projected from the projection lens 2 in advance.

Hereinafter, image correction and mirror image inversion processing executed by the projector 1 will be described.
FIG. 15 is a block diagram showing the configuration of the projector 1. The projector 1 includes a control unit 70, a detection unit 71, an inversion unit 72, a reception unit 73, a storage unit 74, and a reproduction unit 75. The control unit 70 is connected to the detection unit 71, the inversion unit 72, the reception unit 73, the storage unit 74, and the reproduction unit 75, respectively.

  The control unit 70 includes a CPU and a built-in ROM. By using the CPU to execute a control program stored in the built-in ROM, a detection unit 71, a reversing unit 72, a receiving unit 73, a storage unit 74, And the operation of the reproduction unit 75 is controlled.

The detection unit 71 detects whether or not the lid 32 is rotated and the opening 31 is open.
The reversing unit 72 reverses the image projected from the projection lens 2 by reversing the image component in the left-right direction of the image formed on the surface of the display device 12 (see FIG. 1).

The accepting unit 73 determines whether or not to correct the image from the user, whether or not the correction has been completed, and whether or not the correction is completed by the user via the operation unit 7 provided on the upper surface of the box 10 illustrated in FIG. 14A. A correction operation is accepted.
The operation unit 7 may be provided on the remote controller instead of the upper surface of the box 10.

The storage unit 74 stores the correction operation performed by the user. When the reception unit 73 receives a correction operation from the user, the correction value for correcting the image projected from the projection lens 2 changes. To store the correction operation means to store a correction value related to the correction operation.
The reproduction unit 75 reproduces the correction operation based on the correction value stored in the storage unit 74.

  FIG. 16 is a flowchart showing an operation procedure of the control unit 70. First, the control unit 70 instructs the detection unit 71 to detect whether or not the opening 31 is open (step S1). When the opening of the opening 31 is not detected (step S1: NO), the control unit 70 regards that the image is not reflected by the reflecting mirror 36 and ends the control.

  When the opening of the opening 31 is detected (step S1: YES), the control unit 70 instructs the inversion unit 72 to invert the image projected from the projection lens 2 (step S2).

Next, the control unit 70 instructs the reproduction unit 75 to reproduce the correction operation stored in the storage unit 74 (step S3).
In addition, when the correction operation is not stored in the storage unit 74, the control unit 70 does not reproduce the correction operation in the reproduction unit 75, and executes Step S4 described later.

  After step S3, the control unit 70 instructs the reception unit 73 to receive from the user whether or not to perform further correction operation in addition to the correction operation reproduced by the reproduction unit 75 in step S3 (step S4). ). Further, a message for accepting whether or not to perform a correction operation is displayed on an image projected from the projector 1, for example. The user determines whether or not to further perform a correction operation by operating the operation unit 7.

When the control unit 70 receives a determination from the user that no further correction operation is to be performed (step S4: NO), the control ends.
When the control unit 70 further receives a decision to perform a correction operation from the user (step S4: YES), the control unit 70 instructs the reception unit 73 to accept the correction operation from the user (step S5). The user corrects the image distorted in the trapezoidal shape while operating the operation unit 7 and viewing the image projected on the screen 5.

  Next, the control unit 70 instructs the accepting unit 73 to accept from the user via the operation unit 7 whether or not the image correction has been completed (step S6). A message for accepting whether or not the correction has been completed is displayed on an image projected from the projector 1, for example. The user operates the operation unit 7 to notify the projector 1 whether or not the image correction has been completed.

  When the accepting unit 73 accepts the determination that the image correction has not been completed (step S6: NO), the control unit 70 returns to step S5 and accepts a correction operation to the accepting unit 73 until the image correction is completed. Let

When the accepting unit 73 accepts the determination that the image correction has been completed (step S6: YES), the control unit 70 instructs the storage unit 74 to store the correction operation accepted by the accepting unit 73 from the user in step S5. (Step S7). Note that the storage unit 74 deletes the stored correction value related to the correction operation in advance before storing the correction operation.
The control part 70 complete | finishes control after step S7.

  In the projector 1 according to the first embodiment, a configuration in which an existing projector having a cover that can move between a shielding position that shields the projection lens and an exposure position that exposes the projection lens is provided with a lid having an opening and a reflecting mirror. It has become. For this reason, the size of the projector 1 is the same as that of the existing projector, and the configuration is simple. In addition, the projector 1 has a low manufacturing cost because the cover is only improved in the existing projector.

  In the projector 1 according to the first embodiment, the rotating shaft 34 is passed through the opening 31 in the vertical direction and pivotally supports the lid 32 having the reflecting mirror 36, so that the reflecting mirror 36 has the rotating shaft 34. It is possible to project an image in various directions.

  In the projector 1 according to the first embodiment, two rotation shafts 34 and 34 are provided in the opening 31, and the rotation shafts 34 and 34 can be attached to and detached from the peripheral portion of the reflecting mirror 36. Attached attachment portions 35, 35, 35, 35 are provided. Accordingly, since the reflecting mirror 36 rotates about the respective axes of the rotation shafts 34, 34, it is possible to project an image in the left direction, the left diagonally forward direction, the right diagonally forward direction, and the right direction.

  In the projector 1 according to the first embodiment, since the fitting portion 352 has a shape obtained by cutting away a part of the annular ring in the circumferential direction, the fitting portion 352 can be attached to and detached from the rotating shaft 34 using the cut portion. It is possible to rotate around the axis of the rotation shaft 34 while being fitted to the rotation shaft 34.

  In the projector 1 according to the first embodiment, the reflecting mirror 36 can be positioned at a position where the plurality of protrusions 38, 38,... And the plurality of recesses 39, 39,. it can. For this reason, while the image is projected, the position of the reflecting mirror 36 is difficult to shift, and the image is not easily disturbed.

  In the projector 1 according to the first embodiment, whether or not the opening 31 is opened is detected by the detection unit 71, and when the opening 31 is detected, the reversing unit 72 projects from the projection lens 2. The image to be mirrored is inverted. Thereby, the image reflected by the reflecting mirror 36 is correctly displayed on the screen 5.

  In the projector 1 according to the first embodiment, when the opening of the opening 31 is detected by the detection unit 71, the correction operation stored in the storage unit 74 is performed. Accordingly, when the user rotates the lid 32 and projects the opening 31 so as to project an image using the reflecting mirror 36, the correction operation previously performed by the user is performed. The trouble of correcting the distorted image is saved.

(Embodiment 2)
FIG. 17 is a front view of the projector cover 3 according to Embodiment 2 of the present invention.
The projector according to the second embodiment is different in the configuration of the cover 3 from the projector 1 according to the first embodiment.
Hereinafter, parts different from the projector 1 of the first embodiment will be mainly described, and parts corresponding to the other embodiments 1 will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 17, in addition to the gripping portions 33 and 33, gripping portions 83 and 83 are provided on the front surface of the lid 32 at the center of each of the upper side and the lower side. The grip part 83 is a handle that the user hooks with a finger when opening the lid 32.

  FIG. 18 is a front view of the opening 31 provided in the cover 3. The opening 31 is provided with columnar rotation shafts 84 and 84 in addition to the rotation shafts 34 and 34. Each of the rotation shafts 84 and 84 is provided on the rear side of the rotation shafts 34 and 34 so as to pass in the left-right direction near the upper side and the lower side of the opening 31.

  FIG. 19 is a plan sectional view of the cover 3. On the rear surface of the lid 32, in addition to the attaching portions 35, 35, 35, 35 and the reflecting mirror 36, two attaching portions 85 are provided in the vicinity of the upper side and the lower side of the reflecting mirror 36. The two attachment portions 85 and 85 are attached to one rotation shaft 84.

  FIG. 20 is a side sectional view of the cover 3. The attachment portion 85 includes a support column portion 851 and a fitting portion 852. The support column portion 851 is erected on the rear surface of the lid 32. The fitting portion 852 has a shape obtained by cutting out a part of the annular ring in the circumferential direction, and is fixed to the tip of the support column portion 851 so that the axial direction of the annular ring is parallel to the reflecting mirror 36. The length of the support column portion 851 in the front-rear direction is longer than that of the support column portion 351.

  In the fitting portion 852, the cut portion is located on the opposite side of the boundary surface with the support column portion 851 with respect to the center. The inner diameter of the fitting portion 852 is substantially the same as the outer diameter of the rotation shaft 84. The lid 32 is attached to the rotation shaft 84 by fitting the fitting portion 852 to the rotation shaft 84.

  In the projector according to the second embodiment, the rotation shafts 34, 34, 84, 84 are in the opening 31, and the attachment portions 35, 35, 35, 35, 85, 85, 85, 85 are the peripheral edges of the reflecting mirror 36. Provided in the department. Accordingly, the reflecting mirror 36 is rotated around the rotation shafts 34, 34, 84, and 84, and in addition to the left direction, the left diagonally forward direction, the right diagonally forward direction, and the right direction, the upward direction and the forward direction are provided. An image can be projected diagonally upward, forward diagonally downward, and downward.

  The configuration for rotating the lid 32 is not limited to the configuration in which the rotation shafts 34 and 84 are provided. For example, a hinge may be provided at the edge portion of the opening 31. Further, the axial direction of the rotation shafts 34 and 84 is not limited to the left-right direction or the vertical direction of the opening 31. For example, a rotation axis extending from the short side to the long side of the opening 31 may be provided.

  Moreover, the structure of the fitting parts 352 and 852 is not limited to the shape which excised part of the circumferential direction of the annular ring. The fitting portions 352 and 852 may be configured to be detachably and pivotably attached to the pivot shafts 34 and 84. Further, the rotational axis for pivotally supporting the lid 32 having the reflecting mirror 36 is not limited to two or four. One, three, five or more pivot axes may be provided.

DESCRIPTION OF SYMBOLS 1 Projector 10 Box 2 Projection lens 3 Cover 31 Opening 32 Lid 34,84 Rotating shaft 35,85 Mounting part 351,851 Supporting column part 352,852 Fit part 36 Reflector 38 Protrusion 39 Concave part 71 Detection part 72 Inversion part 73 Reception unit 74 Storage unit 75 Reproduction unit

Claims (8)

In a projector comprising a projection lens provided in a box for projecting an image, and a cover movable between a shielding position for shielding the projection lens and an exposure position for exposing the projection lens,
The cover is
An opening facing the projection lens when in the shielding position;
A projector comprising: a reflecting mirror that is arranged in the opening so as to be capable of rotating the box body inward and outward, and that reflects a projected image. The cover further includes:
The projector according to claim 1, further comprising: a rotation shaft that is passed between peripheral edges of the opening and pivotally supports the reflecting mirror. The cover has a plurality of rotating shafts,
The projector according to claim 2, wherein the reflecting mirror includes a plurality of attachment portions that are detachably and rotatably attached to the plurality of rotation shafts. The mounting portion is
A support column that protrudes from the periphery of the reflecting mirror and supports the reflecting mirror;
A shape obtained by cutting a part of the annular ring in the circumferential direction is provided at the tip of the support column so that the axial direction of the ring is parallel to the reflecting mirror, and is fitted to the rotating shaft. The projector according to claim 3, further comprising: a joint portion. At least one protrusion provided on the inner peripheral surface of the fitting portion;
5. The projector according to claim 4, further comprising: a plurality of recesses that are provided around a peripheral surface of the rotation shaft on which the fitting portion is fitted and engage with the protrusion. The opening and the reflecting mirror have a rectangular shape,
The cover has two rotation shafts,
The projector according to any one of claims 2 to 5, wherein both of the rotation shafts are provided in a short direction or a long direction of the opening. A detection unit for detecting whether or not the opening is opened;
7. A reversing unit that reverses a mirror image of an image projected from the projection lens when it is detected that the detection unit is open. 7. Projector. A reception unit that receives an operation of correcting an image reflected by the reflecting mirror and distorted in a trapezoidal shape;
A storage unit for storing operations received by the reception unit;
A detection unit for detecting whether or not the opening is opened;
7. A reproduction unit that reproduces an operation stored in the storage unit when it is detected that the detection unit is open. 7. projector.

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