JP2015102784A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector that includes a lens cover mechanism having a simple configuration to open and close an opening to enable a reduction in size and thickness, and improves the degree of freedom of installation positions of function devices.SOLUTION: A projector 1 includes an exterior housing 10 that has an opening 111 through which light to be projected passes, and a lens cover mechanism 100 that opens and closes the opening 111. The lens cover mechanism 100 includes a lens cover 2 that has a first lens cover 21 and a second lens cover 22 and moves to open and close the opening 111, a link member 3 that rotates to move the lens cover 2, and a guide member 5 that guides the movement of the lens cover 2 and the rotation of the link member 3. The rotation of the link member 3 moves the first lens cover 21, and the movement of the first lens cover 21 moves the second lens cover 22 to open and close the opening 111; the first lens cover 21 and the second lens cover 22 overlap with each other in an open state where the opening 111 is opened.

Description

  The present invention relates to a projector.

  Conventionally, there is known a projector that modulates light emitted from a light source according to image information and projects the modulated light with a projection lens. Such a projector is provided with a lens cover in front of the projection lens for the purpose of protecting the projection lens. Some lens covers are configured to open and close the opening with respect to the opening through which light projected from the projection lens passes automatically or manually.

  In Patent Document 1, the upper lens cover that can open and close the upper part of the opening up and down, the lower lens cover that can open and close the lower part of the opening up and down, and the upper lens cover and the lower lens cover move in the same direction Opening and closing link for opening and closing the opening, and when the opening is opened by the opening and closing link, the opening and closing link is urged in a direction to maintain the open state, and when the opening is closed, the opening is closed A lens cover mechanism having a wire spring that urges the open / close link in a direction to maintain the above is disclosed.

  In Patent Document 2, an exterior housing that houses a projection lens and has a projection opening through which light emitted from the projection lens passes, and a lens cover that opens and closes the projection opening, the lens cover includes: The first cover and the second cover have a first cover and a second cover, and the first cover and the second cover are stacked and stored in an open state in which the projection opening is opened and closed by sliding movement and the projection opening is opened. A projector configured as described above is disclosed.

In recent years, a projector including a receiver that receives a video signal transmitted from an external device wirelessly, a projector including a camera that captures a projected image, and the like are known. Hereinafter, devices such as a receiver and a camera are collectively referred to as functional devices.
In Patent Document 3, a video signal output device that outputs a video signal, a transmitter that wirelessly transmits the video signal output by the video signal output device, a receiver that receives the video signal transmitted by the transmitter, A video display system is disclosed that includes a projection video display device that displays video based on a video signal received by a receiver.

JP 2010-144562 A JP 2012-194227 A JP 2010-74671 A

However, in Patent Document 1, since the upper lens cover, the lower lens cover, and the opening / closing link are overlapped, there is a problem that the thickness in the overlapping direction is increased. Moreover, in patent document 2, a motor and a gear are used for the drive source which slides a lens cover, and there exists a subject that a structure becomes easy to become complicated.
Moreover, the lens cover of a projector may stick an aluminum foil in order to improve heat resistance. When the projector is provided with a receiver, the receiver is usually installed on a side surface provided with an opening for a projection lens. In this case, when the receiver is installed in the vicinity of the lens cover with the opening opened, there is a problem that the reception performance is deteriorated because the aluminum foil serves as a shield. In addition, when the projector is provided with a camera, it is installed on the side surface provided with the projection lens opening as in the case of the receiver. Therefore, there is a problem that the projector cannot be installed in the area of the lens cover where the opening is opened. For this reason, the projector provided with the functional device has a problem that it is difficult to reduce the size because the installation position of the functional device is limited.
Accordingly, there has been a demand for a projector that has a simple structure for opening and closing the opening, includes a lens cover mechanism that can be reduced in size and thickness, and improves the degree of freedom of the installation position of the functional device.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A projector according to this application example is a projector that modulates light emitted from a light source device according to image information and projects the modulated light with a projection lens, and accommodates the light source device and the projection lens. And an exterior housing having an opening that allows light projected from the projection lens to pass therethrough, and a lens cover mechanism that opens and closes the opening. The lens cover mechanism includes a first lens cover and a second lens cover. A lens cover that moves to open and close the opening, a link member that rotates to move the lens cover, and a guide member that guides movement of the lens cover and rotation of the link member, The first lens cover is moved by the rotation of the link member, the opening is opened and closed by moving the second lens cover by the movement of the first lens cover, and the opening is opened. In, wherein the overlap between the first lens cover and the second lens cover.

  According to such a projector, an exterior housing and a lens cover mechanism are provided, and the lens cover mechanism includes a lens cover (a first lens cover and a second lens cover), a link member, and a guide member. The first lens cover is moved by the rotation of the link member, and the opening is opened and closed by the movement of the second lens cover by the movement of the first lens cover. Accordingly, it is possible to realize a lens cover mechanism that opens and closes the opening with a simple configuration of a link member, a lens cover, and a guide member.

  The lens cover is composed of two parts, a first lens cover and a second lens cover. When the opening is opened, the first lens cover and the second lens cover overlap each other. The space required for retracting (or housing) the lens cover can be reduced. Therefore, it is possible to reduce the size of the lens cover when the opening is opened. Thereby, the freedom degree of the installation position of a functional apparatus can be improved.

  Application Example 2 In the projector according to the application example described above, it is preferable that the link member and the lens cover are positioned on both sides of the opening in the open state.

  According to such a projector, the link member does not need to be overlapped with the lens cover, and can be arranged side by side in a plane. Therefore, the thickness of the link member and the lens cover with respect to the optical axis direction of the projection lens can be reduced. can do. Therefore, the lens cover mechanism can be thinned.

  Application Example 3 In the projector according to the application example described above, the link member and the first lens cover include a first engaging portion for moving the first lens cover by the rotation of the link member, It is preferable that the second lens cover is provided with a second engaging portion that moves when the second lens cover is pressed by the movement of the first lens cover.

  According to such a projector, by providing the first engagement portion, the first lens cover is moved by rotation of the link member, and by providing the second engagement portion, the first lens cover is moved. As a result, the second lens cover is pressed and moved. Thereby, simplification of the structure which moves a 1st lens cover and a 2nd lens cover by rotation of a link member, and the improvement of operativity at the time of opening and closing an opening part can be aimed at.

  Application Example 4 In the projector according to the application example described above, the link member includes a link member main body that rotates while being supported by the rotation shaft, and a first engagement portion, and is driven by the rotation of the link member main body. And a moving part that moves relative to the link member main body.

  According to such a projector, when the link member includes the link member main body and the moving unit, and the link member main body is supported by the rotating shaft and rotates, the moving unit including the first engaging unit is Following the rotation, it moves relative to the link member body. Thereby, a link member can be reduced in size.

  Application Example 5 In the projector according to the application example described above, the first engaging portion of the moving unit moves to the outside with respect to the link member main body in the open state and / or the closed state in which the opening is closed. It is preferable.

  According to such a projector, when the link member rotates, the first engagement portion of the moving portion moves to the outside with respect to the link member main body in the open state and / or the closed state. By this operation, the rotation of the link member can be efficiently converted into a linear movement of the first lens cover.

  Application Example 6 In the projector according to the application example described above, it is preferable that the link member includes a biasing member that generates a biasing force between the link member main body and the moving unit.

  According to such a projector, the force generated by the rotation of the link member main body can be efficiently transmitted as the force that the moving unit moves.

  Application Example 7 In the projector according to the application example described above, it is preferable that the projector includes an operation member that moves relative to the exterior housing and rotates the link member.

  According to such a projector, the opening can be easily opened and closed by providing the operation member that moves with respect to the exterior housing and rotates the link member.

  Application Example 8 In the projector according to the application example described above, it is preferable that the operation member moves in a direction opposite to the moving direction of the lens cover.

  According to such a projector, when the operation member is operated, the lens cover is moved in the direction opposite to the moving direction of the operation member. Conventionally, when the operation member is operated, the lens cover is moved in the same direction as the operation member. With this configuration, the movement direction of the operation member when the user opens the opening and the movement direction of the operation member when the user closes the opening can be made the same as in the past, regardless of the installation position of the functional device with respect to the projection lens. Therefore, usability can be improved by improving the degree of freedom of the installation position of the functional device and making the operation method the same as the conventional one (unifying the operation method from the conventional one).

  Application Example 9 In the projector according to the application example described above, the link member is rotatably supported on the rotation shaft, and the link member and the operation member are a first member for rotating the link member by the movement of the operation member. 3 engaging portions, each of the first engaging portion and the third engaging portion has a shaft portion, and the shaft portion has an angle θ formed by the shaft portions around the rotation axis such that 90 ° <θ. It is preferable to be installed so as to be <270 °.

  According to such a projector, the operation member can be moved by adopting a structure in which the shaft portion is installed such that the angle θ formed by the shaft portions around the rotation axis satisfies 90 ° <θ <270 °. A structure in which the direction and the moving direction of the lens cover are opposite to each other can be realized with a simple structure. Further, by installing the shaft portion so that the angle θ is 90 ° <θ <270 °, the force of moving the operating member can be efficiently converted as the force of moving the lens cover. Further, by using the link member having the moving portion described above, it is possible to reduce the size of the link member and to convert the moving force of the operating member into a force for moving the lens cover more efficiently. .

1 is an external perspective view of a projector according to a first embodiment. The perspective view which shows a lens cover mechanism. The disassembled perspective view which shows a lens cover mechanism. The disassembled perspective view which shows a lens cover mechanism. The figure which shows the side and cross section of a lens cover mechanism. The perspective view which shows operation | movement of a lens cover mechanism. The perspective view which shows the lens cover mechanism which concerns on 2nd Embodiment. The disassembled perspective view which shows a lens cover mechanism. The disassembled perspective view which shows a lens cover mechanism. Sectional drawing which shows a lens cover mechanism. The perspective view which shows the state in which the lens cover is located in the middle of an open state and a closed state. The perspective view which shows the state in which the lens cover is located in an open state.

Hereinafter, embodiments will be described with reference to the drawings.
[First Embodiment]

  FIG. 1 is an external perspective view of the projector 1 according to the first embodiment, FIG. 1A is a perspective view showing an open state of the lens cover mechanism 100, and FIG. 1B is a lens cover mechanism. 1 is a perspective view showing a closed state of 100. FIG. In FIG. 1, the appearance of the front surface portion around the projection lens 15 of the projector 1 is shown.

  In the following drawings including FIG. 1, for convenience of explanation, an XYZ orthogonal coordinate system is also used as appropriate. In the XYZ orthogonal coordinate system, the projection direction of the image light from the projector 1 is the Z axis (+ Z direction). Then, it is perpendicular to the Z axis, and the horizontal (left and right) direction is the X axis (the right direction when viewed relative to the front end surface of the projection lens 15 is the + X direction), and the perpendicular (the right direction is the X axis) The vertical direction is the Y-axis (the upward direction when viewed relative to the front end surface of the projection lens 15 is the + Y direction).

An external configuration of the projector 1 will be described with reference to FIG.
The projector 1 includes an optical system such as a light source device, a light modulation device (all not shown), and a projection lens 15. The projector 1 modulates the light emitted from the light source device with the light modulation device in accordance with image information input from the outside, enlarges the modulated light (image light) with the projection lens 15, and the like. Project to. A description of the configuration of the optical system of the projector 1 is omitted.

  As shown in FIG. 1, the projector 1 is covered with an exterior housing 10 that is a substantially rectangular parallelepiped. The exterior housing 10 contains components that constitute an optical system, an electric circuit system, a cooling system, and the like. The exterior housing 10 is generally composed of an upper case 11, a lower case 12, and a rear case (not shown). The upper case 11 constitutes an upper surface 10a, a front surface 10c, an upper side (+ Y side) of the right surface 10d, and an upper side of the left surface 10e of the outer casing 10. The lower case 12 constitutes the lower surface 10b of the exterior housing 10, the lower side (−Y side) of the right surface 10d, and the lower side of the left surface 10e. The back case constitutes the back surface (not shown) of the exterior housing 10.

  As shown in FIG. 1A, the front surface 10c of the upper case 11 is provided with an opening 111 that allows light projected from the projection lens 15 to pass through, relative to the projection lens 15 housed therein. A lens cover mechanism 100 that opens and closes the opening 111 is provided between the projection lens 15 and the opening 111.

  Although described in detail later, the lens cover mechanism 100 includes a guide member 5 having an opening 501 that opens in a substantially similar shape relative to the opening 111. The guide member 5 is installed between the guide member 5 and the front surface 10c (opening 111), guides the lens cover 2 constituting the lens cover mechanism 100, and the lens cover 2 moves to move the opening 501. Open and close. In addition, the lens cover mechanism 100 opens and closes the opening 111 of the exterior casing 10 that is installed in the opposite direction by opening and closing the opening 501 of the guide member 5.

Similarly, a link member 3 that constitutes the lens cover mechanism 100 and is moved by the guide member 5 to move the lens cover 2 is provided on the left side (−X side) of the opening 501. Therefore, the lens cover mechanism 100 opens and closes the opening 111 by moving the lens cover 2 by the link member 3 to open and close the opening 501 of the guide member 5.
Details regarding the configuration and operation of the lens cover mechanism 100 will be described later.

  A rectangular transparent window 112 is installed on the right side (+ X side) of the opening 111 and between the right surface 10d, and inside the upper case 11 opposite to the window 112, as a functional device. A camera 18 is installed. In this embodiment, the camera 18 is configured by a CMOS camera, and captures an image projected on a projection surface (screen or the like) through the window 112. The image captured by the camera 18 is used as trapezoid correction data under the control of a control device (not shown), and keystone correction is performed.

  A rectangular light receiving window 113 is installed on the upper side of the window 112, and a light receiving device 19 as a functional device is installed inside the upper case 11 opposite to the light receiving window 113. The light receiving device 19 receives an optical signal emitted from an external remote controller (not shown), and transmits a signal corresponding to the received optical signal to a control device (not shown). The control device controls the operation of the internal components according to the received signal.

  On the upper surface 10a on the upper side of the opening 111 of the upper case 11, a grip portion 410 that is gripped when the lens cover 2 is slid (when the link member 3 is rotated) is exposed, and the left and right direction (X-axis direction) ) Is provided with a slide opening 114 that enables the slide movement to ().

  Behind the slide opening 114 is an adjustment opening 115 that exposes the focus lever 16 and the zoom lever 17 installed on the projection lens 15 and enables the focus adjustment and size adjustment of the projected image. Further, the upper surface 10a of the upper case 11 is provided with a switch portion (not shown) having a plurality of key switches (not shown) for performing operation input.

  Although not shown, the rear case includes a connection terminal group including a power supply terminal. The power supply terminal supplies a commercial power supply such as AC 100V from the outside to the projector 1 by connecting a power cable. In the connection terminal group, in addition to the power supply terminal, a plurality of connection terminals connected to an external device via a connection cable are installed.

  On the right surface 10 d of the exterior housing 10, an air inlet 116 for taking in outside air for cooling the inside of the projector 1 is installed. An exhaust port 117 for discharging warm air inside the projector 1 is provided on the front surface 10c. Three legs 118 that support the main body of the projector 1 are installed on the lower surface 10 b of the lower case 12. One leg 118 is provided on the front 10c side and two on the back side.

  As shown in FIG. 1A, in a state where the opening 501 (opening 111) is opened (opened state), the gripper 410 is positioned at the left (−X side) end of the sliding opening 114. ing. Further, as shown in FIG. 1B, in a state where the opening 501 (opening 111) is closed (closed state), the gripping portion 410 is positioned at the right (+ X side) end of the sliding opening 114. doing.

  The lens cover 2 is composed of two bodies (a first lens cover 21 and a second lens cover 22), details of which will be described later. And as shown to Fig.1 (a), the lens cover 2 is accommodated in the state which overlaps with the right side of the opening part 501 in the open state. The camera 18 and the light receiving device 19 are installed on the right side of the overlapping lens cover 2. Further, as shown in FIG. 1B, in the closed state, the lens cover 2 covers the opening 501 in a state where the first lens cover 21 covers the left side of the opening 501 and the second lens cover 22 covers the right side. Block.

2 is a perspective view showing the lens cover mechanism 100, FIG. 2 (a) is a perspective view of the lens cover mechanism 100 as viewed from the front surface 10c side of the projector 1, and FIG. 2 (b) is a lens cover. FIG. 2 is a perspective view of mechanism 100 as viewed from the back side of projector 1. 3 and 4 are exploded perspective views showing the lens cover mechanism 100. FIG. Specifically, FIG. 3 is an exploded perspective view of the lens cover mechanism 100 as viewed from the front surface 10 c side of the projector 1. FIG. 4 is an exploded perspective view of the lens cover mechanism 100 as viewed from the back side of the projector 1. 2 to 4 show a closed state in which the lens cover mechanism 100 closes the opening 111.
The configuration of the lens cover mechanism 100 will be described with reference to FIGS.

  As shown in FIGS. 2 to 4, the lens cover mechanism 100 includes a lens cover 2, a link member 3, an operation member 4, and a guide member 5. The guide member 5 guides the operation member 4 so as to reciprocate in a linear manner, guides the link member 3 so as to rotate in a circle, and reciprocates so as to slide the lens cover 2 in a straight manner. To guide you.

  In the lens cover mechanism 100, when the operation member 4 is moved, the link member 3 that engages with the operation member 4 rotates, and the lens cover 2 that engages with the link member 3 rotates as the link member 3 rotates. Moving. By opening and closing the opening 501 of the guide member 5 by the operation of the lens cover mechanism 100, the opening 111 of the exterior housing 10 is set to an open state and a closed state.

  The guide member 5 has a guide member main body 500 formed in a substantially rectangular plate shape. An opening 501 (FIG. 2B) is formed at a substantially central portion of the guide member main body 500. The opening 501 is opposed to the projection lens 15 and the opening 111 of the upper case 11 and is formed in a substantially rectangular shape. The image light emitted from the projection lens 15 passes through the opening 501 and the opening 111 and is projected on a screen or the like.

  The guide member body 500 has an operation guide portion 510 that extends at a predetermined inclination angle to the front side (+ Z side) and the rear side (−Z side) and extends in the left-right direction (X-axis direction) that is the moving direction of the operation member 4. Is formed. This inclination angle is an angle along the inner surface of the opposing upper case 11. The operation guide unit 510 is provided with an operation member 4 described later. Note that the operation guide unit 510 has a predetermined length from the left end and is cut off at the front side. Note that the sliding projection 430 of the operation member 4 is located in the notched region. An upper surface 511 parallel to the XZ plane is formed at the front end portion of the operation guide portion 510 along the end portion. Further, an upper surface 512 parallel to the XZ plane is also formed along the end portion at the rear end portion.

  A cylindrical accommodating portion 514 is formed on the lower side of the left end portion of the operation guide portion 510 so as to protrude rearward. A metal ball B1 and a spring S1 that presses the ball B1 are inserted into the housing portion 514. The ball B1 and the spring S1 press the operation member 4 installed in the operation guide unit 510 from the rear side, and the ball B1 enters two groove portions 450 (to be described later) formed in the operation member 4, whereby the operation member A click feeling is generated when the operation 4 starts or ends. Further, when the ball B1 enters the two groove portions 450, the position of the operation member 4 is fixed and the open state and the closed state are maintained.

  On the left side (−X side) of the opening 501 of the guide member main body 500, a cylindrical rotation shaft 520 is formed so as to protrude to the front side. The rotation shaft 520 is provided with a link member 3 to be described later, and the link member 3 can be rotated about the rotation shaft 520. A guide hole 521 is formed in an arc shape around the rotation shaft 520 on the lower side of the rotation shaft 520. The guide hole 521 allows the guide protrusion 340 of the link member 3 to pass therethrough and restricts the guide and the rotation range in the rotation direction when the link member 3 rotates.

  Near the lower end of the guide member main body 500, two protrusions (an upper protrusion 530 and a lower protrusion 531) extending in the left-right direction (X-axis direction) are formed. In addition, a guide piece 532 that protrudes forward and extends upward is formed at the approximate center of the lower protrusion 531. A guide hole 533 extending in the left-right direction (X-axis direction) is formed on the upper side (+ Y side) of the opening 501 and on the lower side (−Y side) of the operation guide unit 510. A first lens cover 21 of the lens cover 2 to be described later is held and guided by the projecting portions 530 and 531, the guide piece 532, and the guide hole 533, and can move in the left-right direction (X-axis direction).

  On the lower side (−Y side) of the guide member main body 500 and on the upper side of the upper protruding portion 530, a protruding portion 540 is further formed in parallel with the protruding portion 530. In addition, a guide hole 541 is formed on the upper right side of the protrusion 540 by cutting out a part of the right end of the protrusion 540 and extending in the left-right direction (X-axis direction). A second lens cover 22 of the lens cover 2 to be described later is held and guided by the protruding portion 540 and the guide hole 541 and can move in the left-right direction (X-axis direction).

  As shown in FIGS. 2B and 4, a switch fixing portion 550 that fixes a detection switch 7 described later is formed on the rear surface of the guide member main body 500, below the right end portion of the guide hole 533. . The detection switch 7 is fixed to the switch fixing portion 550 so that one lead piece is positioned in the vicinity of the right end portion of the guide hole 533. One lead piece comes into contact with the right end portion of the piece portion 2130 (FIG. 4) of the first lens cover 21 that is inserted into the guide hole 533 and slides.

  The detection switch 7 is a switch that detects that the lens cover 2 has transitioned to the open state. The detection switch 7 has two lead pieces and is connected to the control unit via a cable (not shown). The detection switch 7 has a state in which one lead piece presses the other lead piece and the two lead pieces come into contact with each other, and a state in which one lead piece is pressed and separated from the other lead piece. Yes.

  In the present embodiment, the detection switch 7 is in a state in which one lead piece is pressed by the piece portion 2130 of the first lens cover 21 and separated from the other lead piece when the lens cover 2 is opened. It becomes. The detection switch 7 detects this state as a signal indicating transition to the open state.

  As shown in FIGS. 2 to 4, the operation member 4 includes an operation member main body 400 formed in a substantially rectangular plate shape. The operation member main body 400 has an inclined surface that is a substantially flat surface extending in the left-right direction (X-axis direction) along the inclination angle of the operation guide portion 510. A grip portion 410 that protrudes upward is formed at the right end portion of the operation member main body 400. The grip portion 410 is a portion that is gripped and slid by the user when the operation member main body 400 is moved in the left-right direction.

  As shown in FIG. 4, a rear protrusion 420 that protrudes downward (−Y side) is formed at the rear end of the operation member main body 400. Further, at the left and right ends of the rear protrusion 420, a holding piece 421 that is bent to the rear protrusion 420 and protrudes to the front (right holding piece 421a, left holding piece 421b (see FIG. 5 (a))) is formed. Further, a holding piece 421c (FIG. 4) is formed so as to protrude rearward from a slide protruding portion 430, which will be described later, relative to the left holding piece 421b. Further, a front protrusion 422 that protrudes downward (−Y side) is formed at the front end of the operation member main body 400.

  At the left end portion of the operation member main body 400, a plate-like projecting portion 430 that protrudes downward and extends to the left is formed at a substantially central portion in the front-rear direction (Z-axis direction). A holding protrusion 431 that protrudes forward and extends in the left-right direction is formed on the front side of the slide protrusion 430.

  In the middle of the holding protruding portion 431, a cylindrical shaft portion protruding forward is formed. Hereinafter, this shaft portion is referred to as a third shaft portion 440. In addition, the 3rd axial part 440 comprises 3rd engaging part A3 mentioned later.

  As shown in FIG. 4, in the vicinity of the left and right end portions on the rear side of the sliding protrusion 430, there are groove portions 450 (right groove portion 450 a and left groove portion 450 b) extending in the vertical direction with one curved surface on the inner surface side, respectively. Is formed.

  The link member 3 has a generally fan-shaped link member main body 300, and is formed with a rotation hole 310 for rotation. A groove 311 is formed on the outer periphery of the rotation hole 310. The bearing hole portion 320 and the shaft portion (FIG. 4) are positioned linearly in plan view in a form extending from the link member main body 300 to both sides around the rotation hole portion 310. Hereinafter, this shaft portion is referred to as a first shaft portion 330 (FIG. 4). In addition, the 1st axial part 330 comprises 1st engaging part A1 mentioned later.

  The bearing hole 320 has a long hole shape and is formed toward the rotation hole 310. The bearing hole 320 is slidably inserted through the third shaft portion 440 of the operation member 4. In addition, the bearing hole part 320 comprises 3rd engaging part A3.

The first shaft portion 330 is formed to protrude in a cylindrical shape on the rear surface. A fixing piece 331 is formed at the tip of the first shaft portion 330 so as to be slidable with a bearing portion 2120 of the first lens cover 21 described later and to be fixed so as not to be detached from the bearing portion 2120. Yes.
In addition, a guide protrusion 340 protruding in a columnar shape is formed on the rear surface of the link member main body 300.

The lens cover 2 includes two parts, a first lens cover 21 and a second lens cover 22.
The second lens cover 22 has a cover body 2200 formed in a rectangular plate shape. The front surface and the rear surface of the cover main body 2200 are formed as flat surfaces, and an aluminum foil AL2 having a shape similar to the outer shape of the cover main body 2200 is attached to the rear surface.

  The second lens cover 22 is formed with a second slide portion 2210 that extends downward (−Y side) from the lower end portion of the cover body 2200 and extends to the left side (−X side). In addition, a protruding portion 2220 that protrudes to the front side is formed at the left end portion of the second slide portion 2210. In addition, the protrusion part 2220 comprises 2nd engaging part A2.

  As shown in FIG. 4, protrusions (an upper protrusion 2212 and a lower protrusion 2213) that protrude rearward and extend to the vicinity of the left end are formed on the upper and lower ends of the second slide portion 2210. ing. Further, a slide piece 2214 extending downward from a substantially central portion in the front-rear direction of the lower protrusion 2213 and extending in the left-right direction is formed. Further, a key-shaped piece 2215 extending rearward and having a tip extending downward is formed at the right corner of the lower end of the cover body 2200.

  The first lens cover 21 has substantially the same shape as the second lens cover 22. The first lens cover 21 has a cover body 2100 formed in a rectangular plate shape. The cover body 2100 is formed with flat front and rear surfaces, and an aluminum foil AL1 having a shape similar to the outer shape of the cover body 2100 is attached to the rear surface.

  The first lens cover 21 is formed with a first slide portion 2110 extending from the lower end portion of the cover body 2100 to the lower side (−Y side) and extending to the left side (−X side). Further, a bearing portion 2120 that is connected to the left end portion of the first slide portion 2110 and extends upward (+ Y side) is formed.

  The first slide portion 2110 has a shape that covers the front side of the second slide portion 2210 of the second lens cover 22 described later. In addition, a guide hole portion 2111 for guiding the movement of the second lens cover 22 is formed in the vicinity of the left end portion from the substantially center portion of the first slide portion 2110. In addition, the guide hole part 2111 comprises 2nd engaging part A2.

  Further, as shown in FIG. 4, projecting portions (an upper projecting portion 2112 and a lower projecting portion 2113) that project rearward are formed at the upper and lower end portions of the first slide portion 2110. Further, a slide piece 2114 extending downward from a substantially central portion in the front-rear direction of the lower protrusion 2113 and extending in the left-right direction is formed.

  The bearing portion 2120 has a rectangular hole extending in the vertical direction, and a bearing hole portion 2121 for guiding the first shaft portion 330 of the link member 3 is formed. The bearing portion 2120 is formed with a holding portion 2122 that partially covers the left side of the bearing hole portion 2121 and slidably holds the fixed piece 331 of the link member 3 on the front side of the bearing hole portion 2121. The bearing portion 2120 (bearing hole portion 2121) is slidably inserted through the first shaft portion 330 of the link member 3. The bearing hole portion 2121 constitutes the first engagement portion A1.

  The bearing 2120 is formed with a piece 2123 that extends from the lower end to the rear and bends further upward. The piece 2123 is a part that holds the first lens cover 21 on the guide member 5 when the first lens cover 21 is moved.

  The first lens cover 21 is formed with a piece 2130 extending rearward from a substantially central portion of the upper end portion of the cover body 2100. The piece 2130 contacts and presses one lead piece of the detection switch 7.

  In the present embodiment, the first engagement portion A1 includes the first shaft portion 330 of the link member 3 and the bearing hole portion 2121 of the first lens cover 21. The second engagement portion A <b> 2 includes a guide hole portion 2111 of the first lens cover 21 and a protruding portion 2220 of the second lens cover 22. The third engagement portion A3 includes the third shaft portion 440 of the operation member 4 and the bearing hole portion 320 of the link member 3.

Next, a method for assembling the lens cover mechanism 100 will be described.
5A and 5B are views showing a side surface and a cross section of the lens cover mechanism 100, FIG. 5A is a side view of the lens cover mechanism 100 viewed from the left end, and FIG. 5B is a lens cover mechanism. It is sectional drawing which looked at 100 from the right end part. FIG. 5 is a diagram in a state where the lens cover 2 is located in the closed state.
A method of assembling the lens cover mechanism 100 will be described with reference to FIGS.

First, the second lens cover 22 is installed on the guide member 5.
When installing the 2nd lens cover 22 in the guide member 5, the piece part 2215 of the 2nd lens cover 22 is inserted from the front side into the notch of the right end part of the guide member 5 (guide hole 541). In addition, as shown in FIG. 5B, the two projecting portions 2212 and 2213 of the second lens cover 22 are installed so as to cover the projecting portion 540 of the guide member 5 with the vertical direction interposed therebetween. By this installation, the second lens cover 22 is held and guided by the protruding portion 540 and the guide hole 541 (specifically, the rear surface of the guide member main body 500 located at the lower end portion of the guide hole 541), and the left and right direction (X It is possible to move in the axial direction.

Next, the first lens cover 21 is installed on the guide member 5.
When the first lens cover 21 is installed on the guide member 5, the projecting portion 2113 of the first lens cover 21 is inserted along the two projecting portions 530 and 531 of the guide member 5, so that the operation guide of the guide member 5 is provided. The first lens cover 21 is installed so that the piece 2130 of the first lens cover 21 is positioned in the notched region on the left side of the portion 510.

  Next, the first lens cover 21 is moved in the right direction (+ X direction). At this time, as shown in FIG. 5, the piece 2123 of the first lens cover 21 is moved so as to contact the rear surface of the left end portion of the guide member 5. Further, the rear surface of the first slide portion 2110 of the first lens cover 21 is brought into contact with the protruding portion 2220 of the second lens cover 22 and moved. In this case, the first lens cover 21 is elastically deformed and moved, and the protruding portion 2220 of the second lens cover 22 is inserted into the guide hole portion 2111 of the first lens cover 21.

  In this state, the first slide portion 2110 of the first lens cover 21 is in a state of overlapping (covering) the front surface of the second slide portion 2210 of the second lens cover 22. Further, the right edge portion of the cover body 2100 of the first lens cover 21 is in a state of being overlapped with the left edge portion of the cover body 2200 of the second lens cover 22.

  In this state, as shown in FIG. 5B, the slide piece 2114 of the first lens cover 21 is sandwiched between the guide piece 532 and the protruding portion 531 of the guide member 5. Further, the piece 2130 of the first lens cover 21 is guided to the guide hole 533 of the guide member 5. By the above assembly, the first lens cover 21 is installed on the guide member 5 and can move in the left-right direction (X-axis direction).

Next, the operation member 4 is installed on the guide member 5.
When the operation member 4 is installed on the guide member 5, as shown in FIG. 5A, the operation member 4 (the operation member main body 400, the rear protrusion 420, the front protrusion 422, and the holding piece 421) guides. The operation guide portion 510 is inserted from the left end portion toward the right end portion so as to sandwich the operation guide portion 510 of the member 5. Thereby, the operation member 4 can be reciprocated to slide in the left-right direction (linearly) with respect to the operation guide portion 510.

  When the operation member 4 moves the operation guide unit 510 by the operation of the user holding the grip unit 410, as shown in FIG. 5B, the inner surface of the operation member main body 400 and the lower surface of the front protrusion 422 are provided. Slides in contact with the upper surfaces 511 and 512 of the opposed operation guides 510. Further, when the operation member 4 moves the operation guide portion 510, the lower end portion of the slide projection 430 of the operation member 4 is positioned on the upper end surface 502 of the guide member main body 500 as shown in FIG. In addition to being positioned on the rear side, the lower surface of the holding projection 431 contacts the surface of the upper end surface 502 and slides.

  Further, the sphere B1 accommodated in the accommodating portion 514 of the guide member 5 is positioned in a straight line connecting the two groove portions 450 formed on the rear side of the sliding protrusion 430 (operation member 4) in the left-right direction, The sliding protrusion 430 is pressed forward. Accordingly, the lower end portion of the sliding protrusion 430 is pressed forward by the ball B1 (spring S1), and slides while contacting the rear side of the upper end surface 502 of the guide member main body 500.

Next, the link member 3 is installed on the guide member 5.
When the link member 3 is installed on the guide member 5, the operation member 4 and the first lens cover 21 are installed on the guide member 5. Specifically, the third shaft portion 440 of the operation member 4 installed on the guide member 5 and the bearing hole portion 2121 of the first lens cover 21 are vertically oriented (vertical direction) around the rotation shaft 520 of the guide member 5. The operation member 4 and the first lens cover 21 are moved so as to be positioned at ().

Next, the first shaft portion 330 of the link member 3 is inserted into the inside from the upper side of the bearing hole portion 2121. At this time, the fixing piece 331 of the link member 3 is inserted so that the holding portion 2122 of the bearing portion 2120 abuts from the inside. Next, the rotation hole 310 of the link member 3 is installed so that the rotation shaft 520 of the guide member 5 is inserted, and the bearing hole 320 of the link member 3 is inserted through the third shaft 440 of the operation member 4. . Next, the washer W1 is inserted into the groove 311 of the link member 3, and the screw SC1 is screwed into the hole of the rotating shaft 520 through the inserted washer W1. Thereby, the link member 3 can be rotated to slide in a circular shape around the rotation shaft 520.
With the above assembly, the assembly of the lens cover mechanism 100 is completed.

  As described above, the third engagement portion A3 includes the third shaft portion 440 of the operation member 4 and the bearing hole portion 320 of the link member 3. By moving the operation member 4 in the left-right direction by the third engagement portion A3, the third shaft portion 440 slides on the bearing hole 320, and the force generated by the movement of the operation member 4 is transmitted to the link member 3. . As a result, the link member 3 rotates about the rotation shaft 520. Specifically, when the operation member 4 is moved in the left direction (−X direction), the link member 3 rotates counterclockwise. Further, when the operation member 4 is moved in the right direction (+ X direction), the link member 3 rotates clockwise. The guide protrusion 340 of the link member 3 inserted through the guide hole 521 of the guide member 5 slides along the guide hole 521.

  Further, as described above, the first engagement portion A <b> 1 includes the first shaft portion 330 of the link member 3 and the bearing hole portion 2121 of the first lens cover 21. By rotating the link member 3 by the first engagement portion A1, the first shaft portion 330 slides on the bearing hole 2121 and the force generated by the rotation of the link member 3 is transmitted to the first lens cover 21. To do. Thereby, the 1st lens cover 21 moves to the left-right direction. Specifically, when the link member 3 is rotated counterclockwise, the first lens cover 21 moves to the right. Further, when the link member 3 is rotated clockwise, the first lens cover 21 moves leftward.

  The first engagement portion A1 has a first shaft portion 330 on the link member 3, and the third engagement portion A3 has a third shaft portion 440 on the operation member 4. In the present embodiment, the first shaft portion 330 and the third shaft portion 440 are installed such that the angle θ formed by the shaft portions around the rotation shaft 520 is approximately 180 °. .

  Further, as described above, the second engagement portion A <b> 2 includes the guide hole portion 2111 of the first lens cover 21 and the protruding portion 2220 of the second lens cover 22. Due to the second engaging portion A2, the lens cover 2 moves when the first lens cover 21 is moved and the second lens cover 22 is pressed.

  Specifically, when the first lens cover 21 moves in the right direction (when the opening 111 is opened), the lens cover 2 is configured such that the protruding portion 2220 of the second lens cover 22 is at the left end of the guide hole 2111. By pressing, the second lens cover 22 is moved (pushed) in the right direction. Further, when the first lens cover 21 moves leftward (when the opening 111 is closed), the second lens cover 22 is pressed by the right end of the guide hole 2111 by pressing the protrusion 2220 of the second lens cover 22. The lens cover 22 is moved (pulled) leftward.

FIG. 6 is a perspective view showing the operation of the lens cover mechanism 100, and FIG. 6A is a perspective view showing a state in which the lens cover 2 is positioned between the open state and the closed state. 6 (b) is a perspective view showing a state in which the lens cover 2 is located in an open state. FIG. 6 is a perspective view of the lens cover mechanism 100 viewed from the front side.
The operation of the lens cover mechanism 100 will be described with reference to FIGS.

First, an operation for transitioning from the closed state to the open state will be described.
In order to change from the closed state illustrated in FIG. 2 to the open state illustrated in FIG. 6B, the user grips the grip portion 410 and moves the operation member 4 leftward. At this time, the operation member 4 starts to move when the force due to the leftward movement of the operation member 4 exceeds the pressing force of the spring S1 that presses the ball B1 in contact with the groove 450b.

  When the operation member 4 moves to the left, the link member 3 rotates counterclockwise by the operation of the third engagement portion A3. When the link member 3 rotates counterclockwise, the first engagement portion A1 operates and the first lens cover 21 moves to the right. In the present embodiment, the first lens cover 21 (lens cover 2) moves in the opposite direction to the moving direction of the operation member 4 in this way.

  When the first lens cover 21 moves in the right direction, the guide hole portion 2111 of the first lens cover 21 moves the protruding portion 2220 without changing the position of the second lens cover 22 by the operation of the second engagement portion A2. Move while sliding. Thereby, as shown in FIG. 6A, the second lens cover 22 maintains the closed position until the left end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220.

  Therefore, the first lens cover 21 maintains the position of the second lens cover 22 in the closed state by the operation of the second engaging portion A2, and moves to the right. Then, when the left end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220, in this embodiment, the cover body 2100 of the first lens cover 21 moves to the front side of the cover body 2200 of the second lens cover 22. The cover bodies 2100 and 2200 are in a state where they overlap each other.

  When the left end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220 and the first lens cover 21 further moves rightward, the protruding portion 2220 of the second lens cover 22 is moved by the operation of the second engaging portion A2. It is pressed by the guide hole 2111 and moves to the right following the movement of the first lens cover 21. In this case, the first lens cover 21 (cover body 2100) and the second lens cover 22 (cover body 2200) move while maintaining the overlapping state. Then, as shown in FIG. 6B, the opening 501 is opened. Thereby, as shown to Fig.1 (a), the opening part 111 will be in an open state.

  In the open state, the piece 2130 of the first lens cover 21 is in a state of being separated from the other lead piece by pressing one lead piece of the detection switch 7. Thereby, the detection switch 7 detects as a signal which shows having changed to the open state.

  In the open state, as shown in FIG. 6B, the cover main body 2100 of the first lens cover 21 and the cover main body 2200 of the second lens cover 22 are positioned on the right side of the opening 501 in an overlapping state. The state (the lens cover 2 is retracted (or accommodated)). In the open state, as shown in FIG. 6B, the link member 3 and the lens cover 2 (the cover main body 2100 and the cover main body 2200) are positioned on both sides of the opening 501 (the opening 111). Become.

  In the open state, the ball B1 is pressed by the spring S1 and enters the groove portion 450a formed in the operation member 4, thereby generating a click feeling and fixing the position of the operation member 4 to maintain the open state.

Next, an operation for transitioning from the open state to the closed state will be described.
To change from the open state shown in FIG. 6B to the closed state shown in FIG. 2, the user holds the grip portion 410 and moves the operation member 4 to the right. At that time, when the force due to the rightward movement of the operation member 4 is greater than the pressing force of the spring S1 that presses the ball B1 in contact with the groove 450a, the operation member 4 starts moving.

  When the operation member 4 moves to the right, the link member 3 rotates clockwise by the operation of the third engagement portion A3. When the link member 3 rotates clockwise, the first engagement portion A1 operates and the first lens cover 21 moves leftward. In the present embodiment, as described above, the first lens cover 21 (lens cover 2) moves in the opposite direction to the moving direction of the operation member 4.

  When the operation member 4 moves to the right, the piece 2130 of the first lens cover 21 releases the pressing of one lead piece of the detection switch 7 so that one lead piece contacts the other lead piece. It will be in the state pressed in contact. Thereby, the detection switch 7 detects as a signal which shows having released the open state.

  When the first lens cover 21 moves to the left, the operation of the second engagement portion A2 causes the guide hole portion 2111 of the first lens cover 21 to move the protruding portion 2220 without changing the position of the second lens cover 22. Move while sliding. Accordingly, the second lens cover 22 maintains the open position until the right end portion of the guide hole portion 2111 contacts the protruding portion 2220.

  Therefore, the first lens cover 21 maintains the position of the second lens cover 22 in the open state and moves to the left by the operation of the second engaging portion A2. And when the right end part of the guide hole part 2111 contact | abuts to the protrusion part 2220, it will be in the state which cancels | releases the overlap between cover main bodies 2100 and 2200. FIG. Note that the right edge of the cover body 2100 and the left edge of the cover body 2200 are overlapped.

  When the right end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220 and the first lens cover 21 further moves leftward, the second lens cover 22 has the protruding portion 2220 by the operation of the second engaging portion A2. It is pressed by the guide hole portion 2111 and moves in the left direction following the movement of the first lens cover 21. In this case, the right side edge portion of the cover body 2100 and the left side edge portion of the cover body 2200 move while maintaining the overlapping state. And as shown in FIG. 2, it will be in the obstruction | occlusion state which obstruct | occluded the opening part 501. FIG.

  In the closed state, as shown in FIG. 2, the cover main body 2100 of the first lens cover 21 and the cover main body 2200 of the second lens cover 22 are located on the front side of the opening 501 and cover the opening 501. Become. Thereby, as shown in FIG.1 (b), the opening part 111 will be in a obstruction | occlusion state. Further, in the closed state, the ball B1 is pressed by the spring S1 and enters the groove portion 450b formed in the operation member 4, thereby generating a click feeling and fixing the position of the operation member 4 to maintain the closed state. To do.

According to the embodiment described above, the following effects can be obtained.
The projector 1 according to this embodiment includes an exterior housing 10 and a lens cover mechanism 100. The lens cover mechanism 100 includes a lens cover 2 (first lens cover 21 and second lens cover 22), a link member 3, and a guide member. And 5. The first lens cover 21 is moved by the rotation of the link member 3, and the second lens cover 22 is moved by the movement of the first lens cover 21, thereby opening and closing the opening 111. Thereby, it is possible to realize the lens cover mechanism 100 that opens and closes the opening 111 with a simple configuration of the link member 3, the lens cover 2, and the guide member 5.

  The lens cover 2 is composed of two parts, a first lens cover 21 and a second lens cover 22, and when the opening 111 is opened, the first lens cover 21 and the second lens cover 22. And the space required for retracting (or housing) the lens cover 2 can be reduced. Therefore, the lens cover 2 can be downsized when the opening 111 is opened, and the lens cover mechanism 100 can be downsized. Thereby, the freedom degree of the installation position of a functional apparatus (in this embodiment, the camera 18 or the light-receiving device 19) can be improved.

  Since the projector 1 according to the present embodiment does not need to overlap the link member 3 on the lens cover 2 and can be arranged side by side in a plane, the link member with respect to the optical axis direction (Z-axis direction) of the projection lens 15 can be used. 3 and the lens cover 2 can be reduced in thickness. Therefore, the lens cover mechanism 100 can be thinned.

  The projector 1 according to the present embodiment includes the first engagement portion A1, and thus the first lens cover 21 is moved by the rotation of the link member 3, and the first engagement portion A2 includes the first engagement portion A1. The second lens cover 22 is pressed and moved by the movement of the lens cover 21. Thereby, simplification of the structure which moves the 1st lens cover 21 and the 2nd lens cover 22 by rotation of the link member 3, and the improvement of operativity at the time of opening and closing the opening part 111 can be aimed at.

  The projector 1 according to the present embodiment can easily open and close the opening 111 by providing the operation member 4 that moves relative to the exterior housing 10 and rotates the link member 3.

  In the projector 1 of the present embodiment, the first lens cover 21 (lens cover 2) moves in the opposite direction to the moving direction of the operation member 4. In other words, the operation member 4 moves in the direction opposite to the moving direction of the lens cover 2. Conventionally, when the operation member is operated, the lens cover is moved in the same direction as the operation member. With this configuration of the present embodiment, the moving direction of the operating member 4 when the user opens the opening 111 and the moving direction of the operating member 4 when closing the opening 111 are conventionally set regardless of the installation position of the functional device with respect to the projection lens 15. And can be similar. Therefore, usability can be improved by improving the degree of freedom of the installation position of the functional device and making the operation method the same as the conventional one (unifying the operation method from the conventional one).

The projector 1 according to the present embodiment has a structure in which the angle θ formed by the third shaft portion 440 and the first shaft portion 330 is approximately 180 ° in the present embodiment, with the rotation shaft 520 as the center. . Therefore, a structure in which the moving direction of the operating member 4 and the moving direction of the lens cover 2 are reversed can be realized with a simple structure.
In addition, since the angle θ is approximately 180 °, the moving force of the operation member 4 can be efficiently converted as a force for moving the lens cover 2.

In the projector 1 according to the present embodiment, the lens cover mechanism 100 can be reduced in size and thickness due to the effects described above. Thereby, size reduction of the projector 1 can be achieved.
[Second Embodiment]

FIG. 7 is a perspective view showing the lens cover mechanism 101 according to the second embodiment. FIG. 7A is a perspective view of the lens cover mechanism 101 as viewed from the front surface 10c side of the projector 1, and FIG. FIG. 5B is a perspective view of the lens cover mechanism 101 as viewed from the back side of the projector 1. 8 and 9 are exploded perspective views showing the lens cover mechanism 101. FIG. Specifically, FIG. 8 is an exploded perspective view of the lens cover mechanism 101 as viewed from the front surface 10 c side of the projector 1. FIG. 9 is an exploded perspective view of the lens cover mechanism 101 as viewed from the back side of the projector 1. 7 to 9 show a closed state in which the lens cover mechanism 101 closes the opening 111.
The configuration of the lens cover mechanism 101 will be described with reference to FIGS.

  In addition, the lens cover mechanism 101 of this embodiment differs greatly in the structure of the link member 3A from the structure of the link member 3 in the first embodiment, compared to the lens cover mechanism 100 of the first embodiment. In particular, the structure around the first engagement portion A1 is particularly different. Other configurations are substantially the same as those in the first embodiment. Therefore, in the present embodiment, the configuration and operation of parts that are significantly different from those of the first embodiment will be mainly described, and description of parts that operate substantially the same as those of the first embodiment will be omitted although the structure is slightly different. Moreover, about the part comprised similarly to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The lens cover mechanism 101 includes a lens cover 2A, a link member 3A, an operation member 4A, and a guide member 5A corresponding to the lens cover 2, the link member 3, the operation member 4, and the guide member 5 of the first embodiment. Configured. The guide member 5A guides the operating member 4A so that it can reciprocate linearly, guides the link member 3A so that it can rotate, and reciprocates so that the lens cover 2A slides linearly. To guide you.

  The guide member 5A has a guide member body 500A. On the left side of the opening 501 of the guide member main body 500A, a cylindrical rotating shaft 520A is formed to protrude forward. A link member 3A, which will be described later, is installed on the rotation shaft 520A, and the link member 3A can be rotated about the rotation shaft 520A. An opening hole 505 is formed below the rotation shaft 520A. The opening hole 505 allows a moving portion 360 (described later) of the link member 3A to pass therethrough and restricts a rotation range when the link member 3A rotates.

A guide hole 560 is formed along the protrusion 531 between the lower end portion of the guide member main body 500 </ b> A and the protrusion 531. A guide protrusion 561 extending forward is formed along the lower end of the guide hole 560. Note that the guide hole portion 560 and the guide protrusion portion 561 constitute a first engagement portion A1.
The rest of the configuration is substantially the same as in the first embodiment, and a description thereof will be omitted.

As shown in FIGS. 7 to 9, the operation member 4 </ b> A has an operation member main body 400 </ b> A. At the left end of the operation member main body 400A, a plate-like projecting portion 430A that protrudes downward and extends to the left is formed at a substantially central portion in the front-rear direction (Z-axis direction). A columnar shaft portion (third shaft portion 440A) that protrudes forward is formed in the middle of the sliding protrusion 430A. Note that the third shaft portion 440A constitutes a third engagement portion A3.
The rest of the configuration is substantially the same as in the first embodiment, and a description thereof will be omitted.

  The link member 3A includes a link member main body 300A and a moving part 360. The link member main body 300A is formed in a substantially circular shape, and is formed with a rotation hole portion 310A for rotation. Further, the link member main body 300A has a long hole extending from the link member main body 300A in the outer peripheral direction with the rotation hole 310A as a center, and a bearing hole 320A is formed. The bearing hole portion 320A is slidably inserted through the third shaft portion 440A of the operation member 4A. The bearing hole portion 320A constitutes a third engagement portion A3.

  In the link member main body 300A, a spring holding portion 350 that extends from the outer peripheral portion of the link member main body 300A and bends to the front side is formed on the side symmetrical to the bearing hole portion 320A with the rotation hole portion 310A as the center. Yes. In addition, a spring fixing piece 351 for hooking and fixing a spring S2, which will be described later, is formed at the tip of the spring holding portion 350. The spring holding portion 350 is formed with a moving portion guide hole 355 that passes through a moving portion 360 described later and guides the movement of the moving portion 360 in a substantially rectangular shape.

  The moving part 360 is a member that includes the first engaging part A1 and moves with respect to the link member main body 300A following the rotation of the link member main body 300A. The moving part 360 has a moving part main body 361 formed in a substantially rectangular column shape. An engagement holding portion 365 that extends rearward and extends further downward is formed at the lower end of the moving portion main body 361.

  The moving portion main body 361 is formed with a rectangular guide hole 362 that is slidable through the rotation shaft 520A and the rotation hole 310A. A spring fixing piece 363 that hooks and fixes the spring S2 is formed on the lower surface of the guide hole 362.

  The engagement holding portion 365 is a member that rotatably holds a pin P1 described later. A cylindrical pin holding portion 366 that protrudes forward is formed at the distal end portion of the engagement holding portion 365. Note that the pin holding portion 366 and the pin P1 constitute a first engagement portion A1.

The lens cover 2A includes two parts, a first lens cover 21A and a second lens cover 22A.
The second lens cover 22A has a cover body 2200, as in the first embodiment. A second slide part 2210 is formed on the cover body 2200. In addition, a protruding portion 2220 is formed at the left end portion of the second slide portion 2210 as in the first embodiment. In addition, the protrusion part 2220 comprises 2nd engaging part A2.
The rest of the configuration is substantially the same as in the first embodiment, and a description thereof will be omitted.

  The first lens cover 21A has a cover body 2100 as in the first embodiment. A first slide portion 2110 is formed on the cover body 2100. Further, a bearing portion 2150 extending downward is formed near the left end portion of the lower end portion of the first slide portion 2110, instead of the bearing portion 2120 of the first embodiment.

A bearing opening 2151 that opens downward is formed at the center of the bearing 2150. A groove 2152 that is recessed by one step is formed around the front side of the bearing opening 2151. The bearing opening 2151 constitutes the first engaging portion A1.
The rest of the configuration is substantially the same as in the first embodiment, and a description thereof will be omitted.

  In the present embodiment, the first engagement portion A1 includes the pin holding portion 366 and the pin P1 of the link member 3A, the bearing opening 2151 of the first lens cover 21A, the guide hole portion 560 of the guide member 5A, and the guide protrusion. Part 561. Similar to the first embodiment, the second engagement portion A2 includes a guide hole portion 2111 of the first lens cover 21A and a protruding portion 2220 of the second lens cover 22A. The third engagement portion A3 includes a third shaft portion 440A of the operation member 4A and a bearing hole portion 320A of the link member 3A.

Next, a method for assembling the lens cover mechanism 101 will be described.
FIG. 10 is a cross-sectional view showing the lens cover mechanism 101. FIG. 10 is a cross-sectional view taken along the YZ plane passing through the rotation hole 310A of the link member 3A in a state where the lens cover 2A is positioned between the closed state and the open state. A method of assembling the lens cover mechanism 101 will be described with reference to FIGS.

Prior to assembling the lens cover mechanism 101, the link member 3A is assembled as a sub-assembly.
In assembling the link member 3A, first, the moving part 360 is assembled to the link member main body 300A. Specifically, the rotation hole portion 310A is moved to the moving portion 360 in a state where the engagement holding portion 365 of the moving portion 360 is inserted from the front side into the moving portion guide hole 355 of the link member main body 300A and passes through the spring holding portion 350. It installs so that it may penetrate to the guide hole part 362.

  Then, hooks formed at both ends of the spring S <b> 2 are hooked on the spring fixing piece 351 of the spring holding part 350 and the spring fixing piece 363 of the moving part 360. In this embodiment, the spring S2 as the urging member is configured as a tension coil spring, and has hooks for hooking the spring fixing pieces 351 and 363 at both ends.

  When the spring S2 is hooked on the spring fixing pieces 351 and 363, the moving portion 360 causes the guide hole 362 to slide on the rotation hole 310A by the biasing force of the spring S2, and the outer periphery of the link member main body 300A. Move to the side (outside).

  Next, as shown in FIG. 10, a cylindrical pin P <b> 1 having a round head is inserted into the pin holding portion 366 of the moving portion 360 from the rear side. Then, the C-shaped ring C <b> 1 is engaged with a groove formed in the cylindrical portion of the pin P <b> 1 protruding forward from the pin holding portion 366. As a result, the pin P1 is held by the pin holding portion 366. The link member 3A is assembled by the above subassembly.

Next, the operation member 4A is installed on the guide member 5A.
When the operation member 4A is installed on the guide member 5A, the operation member 4A is inserted from the left end portion toward the right end portion of the operation guide portion 510 so that the operation guide portion 510 of the guide member 5A is sandwiched therebetween. As a result, the operation member 4 </ b> A can be reciprocated to slide in the left-right direction (linearly) with respect to the operation guide unit 510.

Next, the link member 3A is installed on the guide member 5A.
When the link member 3A is installed on the guide member 5A, as shown in FIG. 10, the rotation shaft 520A of the guide member 5A is inserted through the rotation hole 310A of the link member main body 300A on which the moving unit 360 is installed. Install. At that time, the pin holding part 366 of the moving part 360 located in the opening hole 505 of the guide member 5A is inserted into the guide hole part 560 of the guide member 5A. In conjunction with this installation, the third shaft portion 440A of the operation member 4A is inserted through the bearing hole portion 320A of the link member main body 300A.

  Thereafter, a washer W2 is installed from the front side with respect to the rotation shaft 520A slightly protruding from the rotation hole 310A, and the screw SC2 is screwed into the hole of the rotation shaft 520A via the installed washer W2. As a result, the link member 3A can be rotated to slide in a circle around the rotation shaft 520A.

Next, the second lens cover 22A is installed on the guide member 5A.
Note that the method of installing the second lens cover 22A on the guide member 5A is the same as the method of installing the second lens cover 22 on the guide member 5 in the first embodiment, and a description thereof will be omitted. By this installation, the second lens cover 22A can move in the left-right direction (X-axis direction).

Next, the first lens cover 21A is installed on the guide member 5A.
When installing the first lens cover 21 </ b> A on the guide member 5 </ b> A, the protruding portion 2113 of the first lens cover 21 </ b> A is inserted and installed along the two protruding portions 530 and 531 of the guide member 5 </ b> A. At that time, the protruding portion 2220 of the second lens cover 22A is inserted through the guide hole portion 2111 of the first lens cover 21A.

  In addition to this installation, as shown in FIG. 7A, with respect to the bearing opening 2151 formed in the bearing portion 2150 of the first lens cover 21A, from the guide hole portion 560 of the guide member 5A to the front side. A pin P1 of the projecting link member 3A is inserted. As a result, the C-shaped ring C1 is positioned in the groove 2152 of the bearing 2150, and the pin P1 is prevented from coming out from the bearing opening 2151 to the rear side.

Further, in this state, as shown in FIG. 7A, the slide piece 2114 of the first lens cover 21A is sandwiched between the guide piece 532 and the protruding portion 531 of the guide member 5A. Further, as shown in FIG. 7B, the piece 2130 of the first lens cover 21A is guided to the guide hole 533 of the guide member 5A. With the above assembly, the first lens cover 21A is installed on the guide member 5A and can move in the left-right direction (X-axis direction).
With the above assembly, the assembly of the lens cover mechanism 101 is completed.

  As described above, the third engagement portion A3 includes the third shaft portion 440A of the operation member 4A and the bearing hole portion 320A of the link member 3A. By moving the operation member 4A in the left-right direction by the third engagement portion A3, the third shaft portion 440A slides on the bearing hole portion 320A, and the force generated by the movement of the operation member 4A is transmitted to the link member 3A. . As a result, the link member 3A rotates about the rotation shaft 520A. Specifically, when the operation member 4A is moved in the left direction (−X direction), the link member 3A rotates counterclockwise. Further, when the operation member 4A is moved in the right direction (+ X direction), the link member 3A rotates clockwise.

  As described above, the first engaging portion A1 includes the pin holding portion 366 and the pin P1 of the link member 3A, the bearing opening portion 2151 of the first lens cover 21A, the guide hole portion 560 of the guide member 5A, and the guide protrusion. Part 561. When the link member 3A (link member main body 300A) is rotated by the first engaging portion A1, the moving portion 360 is guided by the pin P1 of the link member 3A to the bearing opening 2151 of the first lens cover 21A. The pin holding portion 366 of the link member 3A moves in the left-right direction by sliding on the guide hole portion 560. At this time, the moving part 360 moves the moving part guide hole 355 according to the rotation of the link member main body 300A while being biased by the spring S2.

  The pin holding part 366 slides on the guide hole part 560 and moves in the left-right direction, thereby transmitting the force generated by the rotation of the link member 3A to the first lens cover 21A. As a result, the first lens cover 21A moves in the left-right direction. Specifically, when the link member 3A is rotated counterclockwise, the first lens cover 21A moves in the right direction. Further, when the link member 3A is rotated clockwise, the first lens cover 21A moves leftward.

  The first engagement portion A1 has a pin holding portion 366 and a pin P1 configured as shaft portions on the link member 3A, and the third engagement portion A3 has a third shaft portion 440A on the operation member 4A. . In this embodiment, the pin holding portion 366 (pin P1) and the third shaft portion 440A are installed so that an angle θ formed by shaft portions centering on the rotation shaft 520A is approximately 180 °. Has been.

  Further, in the present embodiment, the first engagement portion A1 of the moving portion 360 is in a state where it has moved to the maximum outside with respect to the link member main body 300A in the closed state and the open state due to the biasing force of the spring S2. ing.

  Further, as described above, the second engagement portion A2 includes the guide hole portion 2111 of the first lens cover 21A and the protruding portion 2220 of the second lens cover 22A. Due to the second engagement portion A2, the lens cover 2A moves when the first lens cover 21A is moved and the second lens cover 22A is pressed. In addition, since the operation | movement by 2nd engaging part A2 of 2 A of lens covers becomes the same as that of 1st Embodiment, description is abbreviate | omitted.

FIG. 11 is a perspective view illustrating a state in which the lens cover 2A is positioned between the open state and the closed state, and FIG. 11A is a perspective view of the lens cover mechanism 101 as viewed from the front side. FIG. 11B is a perspective view of the lens cover mechanism 101 as viewed from the rear side. FIG. 12 is a perspective view showing a state in which the lens cover 2A is positioned in an open state. FIG. 12A is a perspective view of the lens cover mechanism 101 as viewed from the front side, and FIG. FIG. 5 is a perspective view of the lens cover mechanism 101 as viewed from the rear side.
The operation of the lens cover mechanism 101 will be described with reference to FIGS.

First, an operation for transitioning from the closed state to the open state will be described.
In order to change from the closed state shown in FIG. 7 to the open state shown in FIG. 12, the user grips the grip portion 410 and moves the operation member 4A to the left, whereby the operation member 4A starts to move. .

  When the operation member 4A moves leftward, the link member 3A (link member main body 300A) rotates counterclockwise by the operation of the third engagement portion A3. When the link member main body 300A starts to rotate counterclockwise, the moving portion 360 (pin holding portion 366) causes the pin holding portion 366 to resist the biasing force of the spring S2 due to the force generated by the rotation of the link member main body 300A. The guide hole 560 is slid. As a result, the bearing opening 2151 of the first lens cover 21A is pressed by the pin P1 and starts moving in the right direction. Then, following the movement of the operation member 4A in the left direction, the first lens cover 21A moves in the right direction.

  When the first lens cover 21A moves to the right, the moving unit 360 slides on the moving unit guide hole 355 and moves to the inside of the link member main body 300A. Then, in response to an increase in the movement amount of the moving unit 360 (the rotation amount of the link member main body 300 </ b> A), the urging force by the spring S <b> 2 increases and is applied to the moving unit 360.

  When the first lens cover 21A moves to the right, the guide hole portion 2111 of the first lens cover 21A remains in the position of the second lens cover 22A and the protruding portion by the operation of the second engagement portion A2. Move while sliding 2220. Accordingly, the second lens cover 22A maintains the closed position until the left end portion of the guide hole portion 2111 contacts the protruding portion 2220, as shown in FIG.

  Accordingly, the first lens cover 21A moves to the right while maintaining the position of the second lens cover 22A at the closed position by the operation of the second engaging portion A2. Then, as shown in FIG. 11A, when the left end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220, in this embodiment, the cover body 2100 of the first lens cover 21A is the second lens cover. The cover body 2200 moves to the front side of the cover body 2200, and the cover bodies 2100 and 2200 overlap each other.

  Note that this state is a state in which the lens cover 2A is positioned between the closed state and the open state, as shown in FIG. Further, in this state, in the present embodiment, the moving portion 360 is in a state where it enters the inside of the link member main body 300A most, and the urging force of the spring S2 is maximized.

  When the left end portion of the guide hole portion 2111 comes into contact with the protruding portion 2220 and the first lens cover 21A further moves in the right direction, the protruding portion 2220 of the second lens cover 22A is moved by the operation of the second engaging portion A2. It is pressed by the guide hole portion 2111 and moves in the right direction following the movement of the first lens cover 21A. In this case, the first lens cover 21A (cover body 2100) and the second lens cover 22A (cover body 2200) move while maintaining an overlapping state. Then, the opening 501 is opened. Thereby, as shown to Fig.1 (a), the opening part 111 will be in an open state.

  When the lens cover 2A passes the intermediate position and the first lens cover 21A moves rightward toward the open position, the moving unit 360 slides on the moving unit guide hole 355 to link the main body of the link member. Move to the outside of 300A. And the urging | biasing force by the spring S2 is added to the moving part 360, corresponding to the increase in the movement amount (rotation amount of link member main body 300A) of the moving part 360, decreasing.

  In the open state, as shown in FIG. 12A, the cover main body 2100 of the first lens cover 21A and the cover main body 2200 of the second lens cover 22A overlap each other and are positioned on the right side of the opening 501. It becomes a state. In the opened state, as shown in FIG. 12A, the link member 3A and the lens cover 2A (cover body 2100, cover body 2200) are positioned on both sides of the opening 501 (opening 111). Become.

  As shown in FIG. 12B, in the open state, the piece 2130 of the first lens cover 21 </ b> A is in a state of being separated from the other lead piece by pressing one lead piece of the detection switch 7. Thereby, the detection switch 7 detects as a signal which shows having changed to the open state.

Next, an operation for transitioning from the open state to the closed state will be described.
To change from the open state shown in FIG. 12 to the closed state shown in FIG. 7, the user grips the grip portion 410 and moves the operation member 4A in the right direction, whereby the operation member 4A starts to move.

  When the operation member 4A moves to the right, the link member 3A (link member main body 300A) rotates clockwise by the operation of the third engagement portion A3. When the link member main body 300A starts to rotate clockwise, the moving portion 360 (pin holding portion 366) causes the pin holding portion 366 to resist the biasing force of the spring S2 due to the force generated by the rotation of the link member main body 300A. The guide hole 560 is slid. As a result, the bearing opening 2151 of the first lens cover 21A is pressed by the pin P1 and starts moving in the left direction. Then, following the movement of the operation member 4A in the right direction, the first lens cover 21A moves in the left direction.

  Further, when the operation member 4 moves to the right, the piece 2130 of the first lens cover 21A releases the pressing of one lead piece of the detection switch 7, so that one lead piece contacts the other lead piece. It will be in the state pressed in contact. Thereby, the detection switch 7 detects as a signal which shows having released the open state.

  When the first lens cover 21A moves to the left, the moving unit 360 slides on the moving unit guide hole 355 and moves to the inside of the link member main body 300A. Then, in response to an increase in the movement amount of the moving unit 360 (the rotation amount of the link member main body 300 </ b> A), the urging force by the spring S <b> 2 increases and is applied to the moving unit 360.

  When the first lens cover 21A moves to the left, the guide hole portion 2111 of the first lens cover 21A remains in the position of the second lens cover 22A as a result of the operation of the second engagement portion A2. Move while sliding 2220. As a result, the second lens cover 22 </ b> A maintains the open position until the right end portion of the guide hole portion 2111 contacts the protruding portion 2220.

  Accordingly, the first lens cover 21A moves to the left while maintaining the position of the second lens cover 22A in the open state by the operation of the second engaging portion A2. And when the right end part of the guide hole part 2111 contact | abuts to the protrusion part 2220, it will be in the state which cancels | releases the overlap between cover main bodies 2100 and 2200. FIG. Note that the right edge of the cover body 2100 and the left edge of the cover body 2200 are overlapped.

  This state is a state in which the lens cover 2A is positioned between the closed state and the opened state. Specifically, the first lens cover 21 </ b> A is positioned between the closed state and the opened state. In this state, in the present embodiment, the moving part 360 is in a state where it enters the inside of the link member main body 300A most, and the urging force of the spring S2 is maximized.

  When the right end portion of the guide hole portion 2111 is in contact with the protruding portion 2220 and the first lens cover 21A is moved leftward, the protruding portion 2220 of the second lens cover 22A is moved by the operation of the second engaging portion A2. It is pressed by the guide hole 2111 and moves in the left direction following the movement of the first lens cover 21A. In this case, the right side edge portion of the cover body 2100 and the left side edge portion of the cover body 2200 move while maintaining the overlapping state. And as shown in FIG. 7, it will be in the obstruction | occlusion state which obstruct | occluded the opening part 501. FIG.

  In the closed state, as shown in FIG. 7, the cover main body 2100 of the first lens cover 21 </ b> A and the cover main body 2200 of the second lens cover 22 </ b> A are located on the front side of the opening 501 and cover the opening 501. Become. Thereby, as shown in FIG.1 (b), the opening part 111 will be in a obstruction | occlusion state.

  When the lens cover 2A passes the intermediate position and the first lens cover 21A moves to the left toward the closed position, the moving unit 360 slides on the moving unit guide hole 355 and moves to the link member main body. Move to the outside of 300A. And the urging | biasing force by the spring S2 is added to the moving part 360, corresponding to the increase in the movement amount (rotation amount of link member main body 300A) of the moving part 360, decreasing.

  According to the embodiment described above, the following effects can be obtained in addition to the effects of the first embodiment.

  In the projector 1 of this embodiment, the link member 3A includes a link member main body 300A and a moving unit 360. Then, the link member 3A rotates while being supported by the rotation shaft 520A, and the moving unit 360 includes the first engagement unit A1, and the link member body 300A is driven by the rotation of the link member body 300A. Move against. By configuring the link member 3A in this way, the link member 3A can be reduced in size. In particular, since the height direction (Y-axis direction) can be reduced in size, the projector 1 can be reduced in thickness. Moreover, since link member 3A can be reduced in size, the freedom degree of the installation position of a functional apparatus can be improved.

  In the projector 1 according to the present embodiment, when the link member 3A rotates, the first engagement portion A1 (pin holding portion 366, pin P1) of the moving portion 360 is in the open state and the closed state, and the link member main body 300A. In contrast, it moves outward to the maximum. By this operation, the first lens cover 21A can be moved linearly.

  In the projector 1 of the present embodiment, the link member 3A includes a spring S2 as a biasing member that generates a biasing force between the link member main body 300A and the moving unit 360. The spring S2 is a tension coil spring. Thereby, the force by rotation of link member main part 300A can be efficiently transmitted as the force which movement part 360 moves. Therefore, the link member 3A can transmit the moving force of the operation member 4A as the force for moving the first lens cover 21A efficiently.

  In the projector 1 of the present embodiment, the moving unit 360 is opened by moving the first engaging unit A1 outward (moving the moving unit 360 outward) with respect to the link member main body 300A in the open state and the closed state. In the intermediate state between the closed state and the closed state, the first engaging portion A1 is moved inward (the moving portion 360 is moved inward). Accordingly, for example, when the link member 3A is rotated in order to change from the closed state to the open state, the link member 3A can be started with a relatively weak force, gradually requiring a force, and the first engagement portion A1 is located on the innermost side. When the moving intermediate position has passed, it is possible to move the lens cover 2A to the open position without requiring much force by the biasing force of the spring S2 (force to return to the original position). . On the contrary, when the link member 3A is rotated so as to change from the open state to the closed state, the same is true, and when the intermediate position is passed, the biased force of the spring S2 causes the closed state without requiring force. It is possible to move the lens cover to a position.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the scope of the invention. A modification will be described below.

  The projector 1 of the first embodiment is configured to be installed so that the angle θ formed by the third shaft portion 440 and the first shaft portion 330 is about 180 ° with the rotation shaft 520 as the center. However, the present invention is not limited to this, and the angle θ may be set within a range of 90 ° <θ <270 °. This also applies to the second embodiment.

  In the link member 3A of the second embodiment, the first engagement portion A1 moves to the maximum outside with respect to the link member main body 300A in two states of an open state and a closed state. The setting is not limited, and may be set to move to the maximum in either one of the open state and the closed state.

  In the link member 3A of the second embodiment, the spring S2 as the biasing member uses a tension coil spring. However, the present invention is not limited to this, and a compression coil spring, a torsion coil spring, or the like may be used. In addition to the coil spring, various members that generate a biasing force may be used, including a leaf spring.

  The method of using the urging member in the link member 3A of the second embodiment is not limited to this embodiment, and an operation for opening and closing the lens cover by considering the number of urging members, the installation position, and the like. The operating force of the member can be adjusted, and the operability of the operating member can be improved.

  In the projector 1 of the first and second embodiments, a camera 18 and a light receiving device 19 are installed as functional devices. However, the present invention is not limited to this, and a wireless device capable of transmitting and / or receiving images through wireless communication may be installed as a functional device. In addition, a transmitter that outputs an optical signal synchronized with image switching to the screen when an image is projected in a time-sharing manner into a right-eye image and a left-eye image may be installed.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 2, 2A ... Lens cover, 3, 3A ... Link member, 4, 4A ... Operation member, 5, 5A ... Guide member, 10 ... Exterior housing, 15 ... Projection lens, 18 ... Camera, 19 ... Light reception Device, 21, 21A ... first lens cover, 22, 22A ... second lens cover, 100, 101 ... lens cover mechanism, 111 ... opening, 300, 300A ... link member body, 320, 320A ... bearing hole (first) 3 engaging portions), 330 ... first shaft portion (first engaging portion), 360 ... moving portion, 361 ... moving portion main body, 366 ... pin holding portion (first engaging portion), 440, 440A ... third. Shaft portion (third engagement portion), 520, 520A ... rotating shaft, 560 ... guide hole portion (first engagement portion), 561 ... guide projection portion (first engagement portion), 2111 ... guide hole portion ( (Second engaging portion), 2121... Bearing hole portion (first engaging portion), 2 51 ... Bearing opening (first engaging portion), 2220 ... Protruding portion (second engaging portion), A1 ... First engaging portion, A2 ... Second engaging portion, A3 ... Third engaging portion, P1 ... Pin (first engaging part), S2 ... Spring (biasing member).

Claims (9)

A projector that modulates light emitted from a light source device according to image information and projects the modulated light with a projection lens,
An exterior housing that houses the light source device and the projection lens and has an opening that allows the light projected from the projection lens to pass through;
A lens cover mechanism that opens and closes the opening,
The lens cover mechanism is
A lens cover having a first lens cover and a second lens cover and moving to open and close the opening;
A link member that rotates to move the lens cover;
A guide member for guiding the movement of the lens cover and the rotation of the link member,
The first lens cover is moved by rotation of the link member, and the opening is opened and closed by moving the second lens cover by movement of the first lens cover.
The projector according to claim 1, wherein the first lens cover and the second lens cover overlap in an open state in which the opening is open. The projector according to claim 1,
In the open state, the link member and the lens cover are located on both sides of the opening. The projector according to claim 1 or 2, wherein
The link member and the first lens cover include a first engaging portion for moving the first lens cover by rotation of the link member,
The projector according to claim 1, wherein the lens cover includes a second engaging portion that moves when the second lens cover is pressed by the movement of the first lens cover. It is a projector as described in any one of Claims 1-3, Comprising:
The link member is
A link member body that is supported by a rotation shaft and rotates;
A moving portion that includes the first engaging portion and that moves with respect to the link member main body following the rotation of the link member main body;
A projector comprising: The projector according to claim 4,
The projector is characterized in that the first engaging portion of the moving portion moves to the outside with respect to the link member main body in the open state and / or the closed state in which the opening is closed. The projector according to claim 5, wherein
The said link member is provided with the biasing member which generate | occur | produces biasing force between the said link member main body and the said moving part, The projector characterized by the above-mentioned. It is a projector as described in any one of Claims 1-6, Comprising:
A projector comprising: an operation member that moves relative to the outer casing to rotate the link member. The projector according to claim 7, wherein
The projector is characterized in that the operation member moves in a direction opposite to a moving direction of the lens cover. The projector according to claim 7 or 8, wherein
The link member is rotatably supported on the rotation shaft,
The link member and the operation member include a third engagement portion for rotating the link member by movement of the operation member,
Each of the first engagement portion and the third engagement portion has a shaft portion,
The projector is characterized in that the shaft portion is installed such that an angle θ formed by the shaft portions with respect to the rotation axis is 90 ° <θ <270 °.

Images