JP2008089928A - Projection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-stability projecting device which can prevent rotation of the body of the projecting device and inclination of the projecting device, resulting from its operation. <P>SOLUTION: A support section 20 is set on a table surface 60. The body 10 of the projecting device projects images. The body 10 of the projecting device is turnably supported by the legs 21 of the support section 20 via a rotating shaft parallel to an X axis perpendicular to the direction, in which an image is projected and parallel to the table surface 60. Operation switches 41 to 46 on the body 10 of the projecting device are located near the rotation shaft of the body 10. Consequently, even if the operation switches 41 to 46 are operated, rotational moment about the rotating shaft, produced by the operation, can be decreased. This prevents rotation of the body 10 of the projecting device and wobbling or inclination of the projecting device 100 as a whole. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a projection device that projects an image, and more particularly to a desktop projection device that can be installed on a desktop.

  2. Description of the Related Art Conventionally, this type of desktop projection apparatus is configured to stand on a desk surface, for example, and project an image onto a screen on the desk surface (see, for example, Patent Document 1). In recent years, there has been a demand for the desktop projector to be able to project an image not only on a screen on a desk but also on a screen on a wall, for example.

Therefore, a desktop projector that can change the projection direction of an image has been disclosed (for example, see Patent Documents 2 and 3). According to these devices, the projection device main body for projecting an image is rotatably supported by the support member installed on the desk surface, so that the projection can be performed without changing the installation position or installation state of the projection device. The projection direction of the image can be easily changed by simply rotating the apparatus main body.
JP 2003-280091 A JP 2006-184591 A JP 2006-184637 A

  However, when the projection apparatus main body is rotatably supported as in the desktop projector disclosed in Patent Documents 2 and 3, the projection apparatus is operated by operating an operation switch provided on the projection apparatus main body. If the force applied to the main body is too strong, a rotational moment may be generated on the rotation axis of the projection apparatus main body, and the projection apparatus main body may be further rotated to change the attitude of the projection apparatus main body, thereby changing the projection direction of the image. is there. In addition, when the projection apparatus main body is locked to the support member, the rotation of the projection apparatus main body due to the operation of the operation switch is prevented, but the entire apparatus fluctuates due to the force applied by the operation switch operation. In addition, there is a possibility that the apparatus may fall down, and it becomes difficult to stably project an image.

  In addition, when there is a possibility of such rotation of the projection apparatus body or the apparatus falling down, it is necessary to increase the strength of the apparatus by increasing the support member so that the apparatus does not fall down. It will be restricted. In addition, the operator operates the operation switch by adjusting the force so that the rotation of the projection apparatus main body and the apparatus do not fall down, and the operability of the apparatus is lowered.

  SUMMARY An advantage of some aspects of the invention is to provide a highly stable projection apparatus.

  In order to achieve the above object, a projection apparatus according to claim 1, wherein the apparatus is configured around an apparatus main body that projects an image, and a rotation axis that is orthogonal to a projection direction of the image and parallel to an installation surface. A projection apparatus comprising: a support unit that rotatably supports the main body, wherein an operation switch on the main body is disposed in the vicinity of the rotation shaft.

  Further, the projection device according to claim 2 is characterized in that the operation switch is arranged so that a force applied to the device main body by the operation of the operation switch is directed toward the rotation shaft. . Here, “the direction of the rotation axis” means a direction orthogonal to the rotation axis.

  The projection device according to claim 3 is characterized in that the operation switch is arranged so that a force applied to the device main body by the operation of the operation switch is further directed toward the installation surface. To do.

  The projection apparatus according to claim 4 is characterized in that a plurality of operation switches having the same operation content are arranged along a direction in which the apparatus main body rotates.

  Further, in the projection device according to claim 5, when the operation switch having the same operation content has an orientation of the device main body such that the image is projected onto the installation surface, When the operation switch with the operation surface facing upward and the orientation of the apparatus main body are such that the image is projected onto an intersecting surface intersecting the installation surface, the operation surface is And an operation switch that faces.

  The projection device according to claim 6 is characterized in that the direction of the operation surface of the operation switch can be adjusted so that the operation surface of the operation switch always faces upward.

  The projection apparatus according to claim 7 is characterized in that a plurality of types of operation switches having different operation contents are arranged substantially parallel to the rotation axis.

  The projection device according to claim 8 is characterized in that the operation switch is a touch-sensitive button.

  According to the projection device of the first aspect, since the operation switch on the apparatus main body is provided in the vicinity of the rotation shaft, the rotational moment around the rotation shaft generated by the operation of the operation switch can be reduced. Therefore, it is possible to prevent the rotation of the apparatus main body and the apparatus from falling due to the operation.

  According to the projection device of the second aspect, since the force applied to the apparatus main body by the operation of the operation switch is directed toward the rotation axis (direction orthogonal to the rotation axis), the operation switch is operated. It becomes possible to reduce the rotational moment of the generated rotating shaft.

  According to the projection device of the third aspect, since the force applied to the device main body by the operation of the operation switch is directed toward the installation surface, the device is not tilted by the force generated by the operation of the operation switch. Can be prevented.

  According to the projection device of claim 4, regardless of the rotation position of the apparatus main body, any one of the plurality of operation switches having the same operation content has a force applied to the apparatus main body by the operation, Since it is on the rotating shaft and faces downward (toward the support part), if the operation switch is operated, the rotation moment of the rotating shaft generated by the operation is reduced and the device body is rotated. It is possible to prevent the apparatus from falling down.

  Further, according to the projection device of the fifth aspect, even when the orientation is such that the image is projected onto the installation surface, the orientation is such that the image is projected onto the intersecting plane intersecting the installation surface. Even if it is, there will always be an operation switch with the operation surface facing upward, and the force applied to the device body by that operation will be directed downward (toward the support part), so the device will collapse. Can be prevented.

  According to the projection device of the sixth aspect, the operation surface of the operation switch in the vicinity of the rotation axis can always be directed upward, and therefore, by the force applied to the apparatus main body by the operation. It is possible to prevent the device from falling down.

  According to the projection device of the seventh aspect, it is possible to reduce the rotational moment of the rotary shaft generated by the operation when any of the operation switches having different operation contents is operated. When any operation switch is operated, it is possible to prevent the apparatus body from rotating and the apparatus from falling down.

  According to the projection device of the eighth aspect, the operation switch is a contact sensing type (ie, touch type) switch, so that the pressing force required to operate the operation switch is substantially zero. Since the stroke force can be reduced, the rotation of the apparatus main body and the collapse of the apparatus can be prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 shows a schematic configuration of a desktop projector (hereinafter simply referred to as “projector”) 100 according to the first embodiment of the present invention. As shown in FIG. 1, the projector 100 includes a projection apparatus main body 10 and a support unit 20. The projector 100 is a desktop projection device that projects an image, and is installed on a table surface 60 as an installation surface parallel to the XY plane.

  The projection apparatus body 10 projects an image. In the hollow housing of the projection apparatus main body 10, a lamp for projecting an image, an illumination optical system, a transmissive liquid crystal panel (LCD), an imaging optical system, and a control system (all not shown) Is housed. Note that these components are arranged such that the center of gravity of the projection apparatus main body 10 is located at the center thereof.

  Under the control of the control system, the illumination light emitted from the lamp is applied to the LCD via the illumination optical system. Video data is displayed on the LCD. Light that irradiates the LCD and includes information relating to the video data is emitted from one end of the housing of the projection apparatus body 10 to the outside of the apparatus via the imaging optical system. In FIG. 1, the posture of the projection apparatus main body 10 is parallel to the XY plane, and image light is emitted in the −Z direction from the protrusion 11 on the −Y side of the projection apparatus main body 10 and reaches the table surface 60. It is shown. The image data display surface of the LCD and the table surface 60 are in a conjugate relationship. Therefore, an image corresponding to the image data of the LCD is projected on the screen PS on the table surface 60.

  Cylindrical bosses 12 projecting outward are provided at the center of the side surfaces of both ends of the X axis of the housing of the projection apparatus main body 10. Both bosses 12 are arranged such that a straight line connecting the central axes thereof (corresponding to an axis of a rotation axis described later) passes through the center of gravity of the projection apparatus main body 10.

  The support unit 20 is placed on the table surface 60 in order to support the projection apparatus main body 10. The support unit 20 includes two legs 21 having the same shape and disposed at both ends of the X-axis of the projection apparatus main body 10. The two leg portions 21 are arranged so as to be parallel to the Y axis, and are arranged so as to sandwich the projection apparatus main body 10 when viewed from the + Z side. Each leg 21 is configured in a frame shape of an isosceles triangle as viewed from the X-axis direction in order to stably hold the projection apparatus main body 10, and has a bottom surface that is elongated in the Y-axis direction. By setting the longitudinal direction of the bottom surface to the Y-axis direction, it is possible to stably support the projector main body 10 that rotates around the X-axis as will be described later. The height of each leg is such that the projection apparatus main body 10 can be rotated around the X axis as will be described later.

  A columnar through-hole is provided in the X-axis direction at the end of each leg 21 on the + Z side. The boss 12 of the housing of the projection apparatus main body 10 is fitted into the through hole. Thereby, the projection apparatus main body 10 can be rotated around the X axis with respect to the support portion 20. That is, the two bosses 12 of the housing of the projection apparatus main body 10 and the through holes of the two leg portions 21 form a rotation axis of the projection apparatus main body 10. A static frictional force is generated between the boss of the projection device main body 10 and the through hole of the leg portion 21, and the posture of the projection device main body 10 is fixed by this static frictional force.

  In the present embodiment, a locking mechanism that locks the rotation of the projection apparatus main body 10 may be provided. In this case, regardless of the static frictional force, the attitude of the projection apparatus main body 10 is fixed by this locking mechanism.

  When an image is projected onto the screen PS on the table surface 60 using the projector 100 configured as described above, the posture of the projection apparatus main body 10 is set as shown in FIG. Parallel to the XY plane, that is, horizontal. On the other hand, in order to project an image on the screen PS ′ perpendicular to the table surface 60 and on the wall surface 70 as an intersecting surface, the projection apparatus main body 10 is rotated as shown in FIG. What is necessary is just to rotate 90 degree | times centering on an axis | shaft.

  Thus, by rotating the projection apparatus main body 10 about the rotation axis, the screen PS on the table surface 60 is orthogonal to the table surface 60 without changing the installation position or the installation state. An image can be projected on the screen PS ′ on the wall surface. In addition, since the projection apparatus body 10 rotates about its center of gravity, the force required for rotation can be reduced, and the support unit 20 can stably support the projection apparatus body 10. become able to.

  Returning to FIG. 1, a switch disposition unit 40 is provided at the center in the Y-axis direction on the + Z side surface of the projection apparatus body 10, that is, directly above the rotation axis of the projection apparatus body 10. The switch arrangement unit 40 is located in the vicinity of the rotation axis of the projection apparatus main body 10.

  As illustrated in FIG. 3A, the operation switches 41 to 46 are arranged in the switch arrangement unit 40 in order from the −X side in the X-axis direction. The operation switch 41 is a power switch, the operation switches 42 to 45 are left / right / up / down menu selection switches for selecting a menu displayed on a display screen (not shown), and the operation switch 46 is a selected menu. It is a decision switch for determining. That is, the operation contents of the operation switches 41 to 46 are different. These operation switches are disposed substantially parallel to the rotation axis of the projection apparatus main body 10.

  Each of the operation switches 41 to 46 is a push button type switch. Hereinafter, the operation switches 41 to 46 are collectively referred to as an operation switch group 50.

  Further, as shown in FIG. 3B, the width in the Y-axis direction of the switch placement portion 40 is the same W as the diameter of the rotation shaft. Each operation switch 41-46 should just be arrange | positioned in this switch arrangement | positioning part 40. FIG. More preferably, as shown in FIG. 1, when the posture of the projection apparatus main body 10 is horizontal, as shown in FIG. 3B, the projection apparatus main body 10 is positioned directly above the rotation axis of the projection apparatus main body 10. It is desirable to be arranged in In this way, when each of the operation switches 41 to 46 is operated (pressed), the force applied to the projection apparatus main body 10 is directed to the axis of the rotation axis (direction perpendicular to the rotation axis). Therefore, the rotational moment of the rotation axis of the projection apparatus main body 10 generated by the force is substantially zero, and the rotation of the projection apparatus main body 10 is prevented.

  It should be noted that even when the projection apparatus main body 10 is in the orientation as shown in FIG. 2B (the orientation in which an image is projected onto the screen PS ′ on the wall surface), the operation switches 41 to 46 are pressed. Since the force applied to the projection apparatus main body 10 is always directed toward the rotation axis of the projection apparatus main body 10, the rotational moment generated on the rotation axis of the projection apparatus main body 10 is substantially zero. Rotation is prevented.

Since the operation switches 41 to 46 are arranged in parallel to the rotation axis of the projection apparatus main body 10, when any one of the operation switches 41 to 46 is operated, the projection apparatus main body is operated by the operation. Of course, it is possible to reduce the rotational moment generated on the rotation shaft 10 and to prevent the projection apparatus body 10 from rotating.
(Second Embodiment)
FIG. 4 shows a schematic configuration of a projector 101 according to the second embodiment of the present invention. As shown in FIG. 4, the projector 101 according to the present embodiment is different from the projector 100 according to the first embodiment only in that a switch arrangement unit 40 ′ is provided instead of the switch arrangement unit 40. Is different. Accordingly, components having the same functions as those of the first embodiment are denoted by the same reference numerals as those used in the previous embodiment, and detailed descriptions thereof are also omitted.

  In the switch arrangement portion 40 ′, the housing of the projection apparatus main body 10 projects in a semi-cylindrical side shape. In addition, the switch arrangement portion 40 ′ is provided with a plurality of operation switch groups (switch groups including operation switches 41 to 46) 50 and 51. Similar to the operation switch group 50 of the first embodiment, the operation switch groups 50 and 51 in which the operation switches are arranged in the X-axis direction are along the rotation direction of the rotation shaft and the circumferential direction of the semi-cylindrical side surface. It is arranged. The operation switch group 50 is arranged on the top of the semi-cylindrical surface of the switch arrangement portion 40 ′, and the operation switch group 51 is arranged near the −Y side end of FIG. 1 of the switch arrangement portion 40 ′. The order of arrangement of the operation switches in the operation switch group 50 is the same as the order of arrangement of the operation switches in the operation switch group 51. If the viewpoint is changed, operation switches having the same operation content are displayed in the switch placement unit 40 ′. It can be considered that they are arranged along the rotational direction of the rotation axis, that is, along the circumferential direction of the semi-cylindrical side surface (that is, at the same X position).

  FIG. 5A shows a side view when the posture of the projector main body 10 is horizontal. In this case, the operation surfaces of the operation switches 41 to 46 of the operation switch group 50 are directed upward (+ Z side). Therefore, in this case, the operator operates the operation switches 41 to 46 of the operation switch group 50 with the operation surface facing upward. In this way, the force applied to the projection apparatus main body 10 by the operation is directed toward the axis of the rotation axis of the projection apparatus main body 10, so that no rotational moment is generated on the rotation axis, and the projection apparatus Since the main body 10 does not rotate and the direction of the force is directed downward (in the −Z direction), that is, toward the bottom surface of the support portion 20, even if the rotation of the projection apparatus main body 10 is locked. The projector 101 itself does not fall down.

  FIG. 5B shows a side view when the projection apparatus main body 10 is rotated 90 degrees from the state shown in FIG. In this case, the operation surface of each switch of the operation switch group 51 is directed substantially upward. Therefore, in this case, if the operator operates each of the operation switches 41 to 46 of the operation switch group 50 with the operation surface facing substantially upward, the force applied to the projection apparatus main body 10 by the operation is projected. The rotation axis of the projector is directed toward the axis, so that no rotation moment is generated on the rotation axis, the projection apparatus main body 10 does not rotate, and the direction of the force is downward (−Z direction). That is, since it faces the support portion 20, even if the rotation of the projection apparatus main body 10 is locked, the projector 101 itself does not fall down.

In the present embodiment, the number of operation switch groups provided in the switch placement unit is two. However, the number of operation switch groups is not limited to this, and the number of operation switch groups may be three or more. For example, the operation switch groups are desirably provided at equal intervals along the rotation direction of the projection apparatus main body 10. It is desirable that the position of the operation switch group is determined according to the projection direction of the video, that is, the set posture of the projection apparatus main body 10. In this case as well, the operator needs to operate the operation switch with the operation surface facing upward.
(Third embodiment)
FIG. 6 shows a schematic configuration of a projector 102 according to the third embodiment of the present invention. As shown in FIG. 6, the projector 102 according to the present embodiment is provided with a switch arrangement unit 40 ″ instead of the switch arrangement units 40 and 40 ′. The projectors 100 and 101 according to the embodiment are different. Accordingly, components having the same functions as those in the first and second embodiments are denoted by the same reference numerals as those used in the previous embodiment, and detailed descriptions thereof are also omitted.

  As shown in FIG. 6, the switch arrangement portion 40 ″ is provided with a rotation axis parallel to the X axis at the −Y side end portion, and the switch arrangement portion 40 ″ is arranged on the rotation axis. It is provided so that rotation is possible. The angle of the operation surface of the operation switch group 50 with respect to the projection apparatus main body 10 can be arbitrarily set within a predetermined range. The settable range of the angle may be arbitrary, but may be 90 degrees, for example.

  FIG. 7A shows a side view when the posture of the projector main body 10 is horizontal. In this case, if the operation switch arrangement part 40 '' is set along the projection apparatus main body 10, the operation surfaces of the operation switches 41 to 46 of the operation switch group 50 are directed upward (+ Z direction). Become. If the operator operates the operation switches 41 to 46 in this state, the force applied to the projection apparatus main body 10 by the operation comes to face the rotation axis side of the projection apparatus main body 10, and the projection apparatus main body 10 rotates. The rotational moment generated on the shaft is reduced, and the rotation of the projection apparatus main body 10 is prevented. Further, since the direction of the force is directed downward (−Z direction) and points toward the bottom surface of the support portion, the projector 102 itself does not fall down due to this force.

  FIG. 7B shows a side view when the projection apparatus main body 10 is rotated 90 degrees from the state shown in FIG. 7A. In this case, if the switch disposition unit 40 ″ is rotated as indicated by the arrow in FIG. 7B, the operation surfaces of the operation switches 41 to 46 of the operation switch group 50 are upward (+ Z direction). ). Therefore, even if the operator operates the operation switches 41 to 46 with the operation surface facing upward, the force applied to the projection apparatus main body 10 by the operation is lower than the rotation axis (−Z direction). ), The rotation moment of the rotation axis of the projection apparatus main body 10 is reduced, and the projector 103 itself is prevented from falling. Note that the setting angle of the switch arrangement portion 40 ″ at this time can be arbitrarily set according to the direction of the force by the operation.

  In addition, it is not necessary to comprise switch arrangement | positioning part 40 '' with a flat plate like this embodiment, and switch arrangement | positioning part is semicylindrical like switch arrangement | positioning part 40 'shown by said 2nd Embodiment. It is good also as a side surface shape and making this rotatable centering on the center axis | shaft (rotation axis around X-axis) of the cylinder. Even in this case, the operation surface of the operation switch can always be on the rotating shaft and below.

  In the present embodiment, the attitude (rotation angle) of the projection apparatus main body 10 is detected by a sensor (not shown), and the angle of the switch placement unit 40 '' is provided on the rotation axis according to the detection result. An automatic adjustment unit that automatically adjusts by a motor (not shown) may be provided. In this way, it is not necessary for the operator to adjust the angle of the switch placement portion 40 ″, and the burden is reduced.

  As described in detail above, according to each of the above embodiments, the operation switch on the projection apparatus main body 10 is provided in the vicinity of the rotation axis of the projection apparatus main body 10, so that the operation switches 41 to 46 are operated. It becomes possible to reduce the generated rotational moment around the rotation axis. As a result, it is possible to prevent the rotation of the projection apparatus main body 10 caused by the operation and the tilting of the projectors 100, 101, 102 themselves, and stable image projection is possible.

  Further, according to each of the embodiments described above, the force applied to the projection apparatus main body 10 by the operation of the operation switches 41 to 46 is generally directed toward the rotation axis. Since the rotation moment generated on the rotation shaft by the operation of the operation switches 41 to 46 can be reduced, the rotation of the projection apparatus main body 10 can be prevented, and stable image projection can be performed.

  Further, according to the second embodiment, regardless of the rotation position of the projection apparatus main body 10, any one of the operation switch groups 50 and 51 whose operation content is applied is applied to the projection apparatus main body 10 by the operation. However, since the rotation axis of the projection apparatus main body 10 is directed toward the −Z side, the rotation of the projection apparatus main body 10 and the tilt of the projector 101 itself can be prevented to stably project an image. it can.

  Further, according to the second embodiment, even when the image is projected onto the screen PS on the table surface 60, the image is projected onto the screen PS ′ on the wall surface 70. Even if it is, there will always be an operation switch with the operation surface facing upward, and if you operate that operation switch, the force applied to the device body by that operation will be directed downward, The apparatus can be prevented from falling down and can be projected stably.

  Further, according to the third embodiment, the direction of the operation surfaces of the operation switches 41 to 46 can be adjusted so that the operation surfaces of the operation switches 41 to 46 always face upward. For this reason, the operation surfaces of the operation switches 41 to 46 in the vicinity of the rotation axis of the projection apparatus main body 10 can always be directed upward, so that the projector is caused by the force applied to the projection apparatus main body 10 by the operation. It is possible to prevent the fall of the image and stably project the image.

  In the second and third embodiments, the case where the posture of the projection apparatus body 10 is set to be horizontal and the case where it is set to be vertical has been mainly described. However, the projection apparatus body 10 has an inclined surface (XY). Of course, the posture can be fixed at an arbitrary angle between 0 and 90 degrees in order to correspond to the screen on the surface intersecting the surface). Even in such a case, it is needless to say that the operation surface of the operation switch is directed to the rotating shaft side and downward.

  Further, according to each of the above embodiments, the plurality of types of operation switches 41 to 46 having different operation contents are arranged substantially in parallel with the rotation axis of the projection apparatus main body. For this reason, when any of the operation switches 41 to 46 having different operation contents is operated, the rotation moment of the rotation shaft generated by the operation can be reduced, and the rotation of the projection apparatus main body, the fluctuation of the projector, It is possible to prevent the fall and project the image on the screen in a stable state.

  In the above-described embodiments, the various operation switches are push-button switches, but these operation switches may be capacitive (touch-sensitive) buttons. In this way, the pressing force required for operating the operation switch can be made substantially zero, and the stroke force can be reduced. Therefore, the rotation axis of the projection apparatus main body 10 can be reduced. It is possible to reduce the rotational moment generated in the.

  According to each of the above embodiments, the operation switch is arranged to prevent the rotation of the projection apparatus main body and the projector from wobbling or falling, so that the allowable value of the projector strength is increased by increasing the support member. This eliminates the need for a higher degree of design freedom. Further, it is not necessary to adjust the operation force of the operation switch by the operator, and the operability of the operation switch is improved.

  Note that the operation switch group is not limited to that in each of the above embodiments. For example, an operation switch group as shown in FIG. In the operation switch group 50 ′ shown in FIG. 8A, the menu selection switches 42 ′ to 45 ′ on the top, bottom, left and right are arranged instead of the operation switches 42 to 45 on the top, bottom, left and right. This is different from the operation switch group 50 shown in A). In the operation switch group 50 ′, the menu selection switches 42 ′ to 45 ′ are arranged in a cross shape, but the operation switch group 50 ′ is also near the rotation axis of the projection apparatus body 10, that is, the switch arrangement units 40 and 40. Since it is disposed within “, 40”, even if the operation switches 42 ′ to 45 ′ are operated, the rotation of the projection apparatus main body 10 is prevented and the projector itself is prevented from falling.

  Further, the operation switch group may be as shown in FIG. In the operation switch group 50 ″ shown in FIG. 8A, the operation switches 42 ′ to 46 ″ are arranged instead of the operation switches 42 ′ to 45 ′ and 46. FIG. The operation switch group 50 'shown in FIG. In the operation switch group 50 ″, the operation switches 42 ″ to 45 ′ are arranged in a cross shape, and the decision switch 46 ″ is arranged so as to be surrounded by the menu selection switches 42 ″ to 45 ″. Yes. Also in the operation switch group 50 ″, the operation switches 42 ″ to 46 ″ are operated because the operation switch group 50 ″ is disposed in the vicinity of the rotation axis of the projection apparatus main body 10, that is, in the switch arrangement portions 40, 40 ′, 40 ″. Even so, the rotation of the projector main body 10 is prevented, and the projector itself is prevented from falling.

  The operation switch is not limited to the power switch, the up / down / left / right menu selection switch, and the determination switch, but can be a switch of any operation content such as a volume control switch.

  Further, when the rotation shaft of the projection apparatus main body 10 is locked by a locking mechanism (not shown), it is not necessary to consider the rotation moment of the rotation shaft due to the operation of the operation switch. Like the projector 103, the width of the switch placement unit 48 in the Y-axis direction can be increased. The width of the switch placement portion 40 ′ in the Y-axis direction is the same as the width W ′ of the leg portion 21 ′ in the Y-axis direction. The switch placement portion 40 ′ has four corners on the bottom surface of the leg portion 21 ′. It is directly above the area on the table surface. In other words, when the rotation of the projection apparatus main body 10 is locked, the operation switch is always positioned directly above the width in the Y-axis direction of the leg portion 21 ′ to prevent the projector itself from falling. Need to be installed.

  Note that the rotation axis of the projection apparatus main body is not limited to the one in which the boss and the through hole are provided on both sides of the projection apparatus main body as in each of the above embodiments. For example, a configuration in which a bearing is provided between the boss and the through hole may be employed, or a configuration in which the rotation shaft passes through the projection apparatus main body may be employed.

  As described above, the projection apparatus of the present invention is suitable for projecting an image on a desktop or a wall surface.

1 is a perspective view of a projector according to a first embodiment of the present invention. 2A and 2B are side views of the projector of FIG. FIG. 3A is a diagram showing the arrangement of the switches in the operation switch group, and FIG. 3B is a diagram for explaining the arrangement positions of the operation switches. It is a perspective view of the projector which concerns on the 2nd Embodiment of this invention. 5A and 5B are side views of the projector of FIG. It is a perspective view of the projector which concerns on the 3rd Embodiment of this invention. 7A and 7B are side views of the projector of FIG. FIG. 8A and FIG. 8B are diagrams showing a modification of the operation switch. It is a figure which shows the modification of a leg part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Projection apparatus main body 11 Protrusion part 12 Boss 20 Support part 21 Leg part 40, 40 ', 40''Switch arrangement part 41 Power switch 42, 43, 44, 45 Menu selection switch 46 Decision switch 48 Switch arrangement part 50, 51 Operation Switch group 60 Table surface 70 Wall surface 100, 101, 102 Projector PS, PS 'screen

Claims (8)

An apparatus body for projecting an image;
In a projection apparatus comprising: a support unit that rotatably supports the apparatus main body about a rotation axis that is orthogonal to the projection direction of the image and parallel to an installation surface;
A projection apparatus, wherein an operation switch on the apparatus main body is disposed in the vicinity of the rotation shaft.   The projection apparatus according to claim 1, wherein the operation switch is arranged so that a force applied to the apparatus main body by an operation of the operation switch is directed toward the rotation shaft.   The projection apparatus according to claim 2, wherein the operation switch is arranged so that a force applied to the apparatus main body by an operation of the operation switch is further directed toward the installation surface.   The projection apparatus according to claim 1, wherein a plurality of operation switches having the same operation content are arranged along a direction in which the apparatus main body rotates. For operation switches with the same operation content,
When the orientation of the apparatus body is such that the image is projected onto the installation surface, an operation switch whose operation surface faces upward,
An operation switch is included in which the operation surface of the apparatus main body is directed upward when the image is projected onto an intersecting surface intersecting the installation surface. The projection apparatus according to claim 4.   The projection apparatus according to claim 1, wherein the direction of the operation surface of the operation switch can be adjusted so that the operation surface of the operation switch always faces upward.   The projection apparatus according to claim 1, wherein a plurality of types of operation switches having different operation contents are arranged substantially in parallel with the rotation axis.   The projection device according to claim 1, wherein the operation switch is a touch-sensitive button.

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