JP2014071194A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector including a lens shift mechanism that can fix the position of a projection lens.SOLUTION: A lens shift mechanism 5 includes: a movable part which supports a projection lens 36, and is movable in first and second directions perpendicular to each other in a plane perpendicular to an optical axis 36j; dials 61, 161 for generating a driving force for moving the movable part in the first and second directions, respectively; a first rotating part and a second rotating part rotating by receiving the driving force by the dials 61, 161, respectively; and a lock mechanism 7 for performing switching between a locked state where the first rotating part and the second rotating part are locked and a non-locked state where the first rotating part and the second rotating part are rotatable. The lock mechanism 7 has a first lock member 711 and a second lock member 721 moving along the rotational axes of the first rotating part and the second rotating part and locking the first rotating part and the second rotating part, respectively, and a lever mechanism 10 for moving the first lock member 711 and the second lock member 721.

Description

  The present invention relates to a projector.

Conventionally, a light modulation device that modulates a light beam emitted from a light source and a projector that includes a projection lens that projects the modulated light beam are known. A projector having a lens shift mechanism for moving a projection lens has been proposed so that a user can move a projected image without moving the projector.
In addition, a technique in which a lock mechanism is provided in the lens shift mechanism has been proposed so that the position of the projected image is not shifted due to the movement of the projection lens for some reason (see, for example, Patent Document 1). .

The lock mechanism described in Patent Document 1 is engaged with a lever member that is slid by a user and a spur gear on the back surface of the horizontal operation dial in accordance with the sliding operation of the lever member so that the horizontal operation dial cannot be operated. Alternatively, a horizontal lock member that can be operated, a vertical lock member that engages and disengages with a spur gear on the back surface of the vertical operation dial, and a vertical lock member that disables or allows operation of the vertical operation dial, and each lock member for each spur gear. And a torsion spring that biases in the approaching direction.
Further, the horizontal lock member and the vertical lock member are configured to be engaged with and disengaged from the spur gear by rotating around an axis parallel to the rotation center axis of the spur gear to be engaged and disengaged.

JP 2007-78729 A

  However, the lens shift mechanism described in Patent Document 1 has a structure that is complicated and difficult to manufacture because the lock mechanism is configured to assemble the horizontal lock member and the vertical lock member on an axis parallel to the rotation center axis of the spur gear of the operation dial. There is a problem that the lock mechanism is enlarged by arranging the horizontal lock member and the vertical lock member in the direction orthogonal to the rotation center axis, and the arrangement of other members is restricted.

  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 includes a projection lens and a lens shift mechanism that moves the projection lens, and projects an image on a projection surface. The lens shift mechanism includes the projection lens. A movable part that can move in a first direction and a second direction orthogonal to each other in a plane perpendicular to the optical axis of the projection lens, and a driving force that moves the movable part in the first direction. A first operating portion generated by the first operating portion, a second operating portion for manually generating a driving force for moving the movable portion in the second direction, and a first rotating portion to which the driving force from the first operating portion is transmitted. A rotating part; a second rotating part that rotates by receiving a driving force transmitted from the second operating part; a locking state that locks the first rotating part and the second rotating part; and the first rotating part and Said A lock mechanism capable of switching between a non-locking state in which the rotation part is rotatable, and the lock mechanism moves along a rotation center axis of the first rotation part, and the first rotation part is moved. A first locking member that can be locked, a second locking member that moves along a rotation center axis of the second rotating portion, and that can lock the second rotating portion; the first locking member; And a lever mechanism that moves the second locking member to switch between the locked state and the unlocked state.

According to this configuration, the lens shift mechanism includes the lock mechanism configured as described above, and the lock mechanism is configured such that the first locking member and the second locking member are moved by the lever mechanism, and the first rotating unit is moved. And the latching state which latches a 2nd rotation part, and a non-locking state are switched.
Since the first rotating unit and the second rotating unit are rotated by the driving force transmitted from the first operating unit and the second operating unit, respectively, the first operating unit and the second operating unit can be rotated in the locked state. It becomes impossible. On the other hand, in the non-locking state, the locking of the first rotating part and the second rotating part is released, so that the first operating part and the second operating part can be rotated.
Accordingly, the projection lens is moved by operating the first operation unit and the second operation unit in the unlocked state, and the projection lens is set in a state in which the first operation unit and the second operation unit cannot be rotated in the locked state. Can be fixed at a desired position. Therefore, it is possible to prevent the user from worrying about accidentally touching the first operation unit or the second operation unit to move the projection lens or moving the projection lens due to vibration or the like. It becomes possible.

  In addition, the lock mechanism moves along the rotation center axis of each of the first rotation part and the second rotation part of the member locked by the first locking member and the second locking member, thereby preventing the locking state from being locked. Since the structure is switched between the locked state and the locking state, a locking mechanism that simplifies the structure and saves space in the direction orthogonal to the rotation center axis (around the first rotating portion and the second rotating portion) is possible. In particular, in a lens shift mechanism that allows the projection lens to move in two directions, the structure becomes complicated, so the effect becomes remarkable. Therefore, it is possible to provide a projector including a lens shift mechanism that can move the projection lens and fix the projection lens at a desired position while suppressing the increase in size and complexity of manufacture.

  Application Example 2 In the projector according to the application example described above, the first operation unit and the second operation unit generate the driving force by being rotated, and the first rotation unit is configured to perform the first operation. The second rotation unit has the same rotation center axis as the second operation unit and has the same rotation center axis as that of the second operation unit, and rotates together with the second operation unit. It is preferable that it is a gear.

  According to this configuration, the first locking member and the second locking member are coaxial with the rotation center axes of the first operation unit and the second operation unit, respectively, and are formed as gears. It will be comprised so that a part can be latched. As a result, the driving force of the first operation unit and the second operation unit is transmitted by the plurality of transmission gears, and the transmission gear centering on an axis different from the rotation center axis of the first operation unit and the second operation unit is locked. Since the influence of backlash is small compared with the structure to perform, the shakiness of the 1st operation part in a latching state and a 2nd operation part can be made small. Therefore, the projection lens can be fixed more reliably at a desired position.

  Application Example 3 In the projector according to the application example described above, the lock mechanism includes an urging member that urges the first locking member in a rotation center axis direction of the first rotating portion, and the second locking member. And an urging member that urges the second rotator in the direction of the rotation center axis.

  According to this configuration, since the locking mechanism includes the above-described urging member, the first locking member and the second locking member are installed in a projector installation posture (for example, stationary installation on a desk or the like, The projector is positioned in a stable position without being affected by a ceiling-mounted installation in which the projector is turned upside down and installed on the ceiling or the like. Therefore, it is possible to provide a projector that can fix the projection lens at a desired position without being affected by the installation posture.

  Application Example 4 In the projector according to the application example described above, the lever mechanism includes a first moving member that moves the first locking member along the rotation center axis of the first rotating portion by rotation, and the rotation mechanism that moves the first locking member. It is preferable to include a second moving member that moves the second locking member along the rotation center axis of the second rotating portion, and a lever that rotates the first moving member and the second moving member by sliding. .

  According to this configuration, when the lever is slid, the first moving member and the second moving member rotate, and the rotation of both members causes the first locking member and the second locking member to move and lock. The state and the non-locking state are switched. That is, the operating force for sliding the lever is transmitted as rotational torque to the first moving member and the second moving member, and moves the first locking member and the second locking member. As a result, the first locking member and the second locking member can be moved more smoothly than the configuration in which the operating force for sliding the lever is linearly transmitted to the first locking member and the second locking member. The amount of movement of the lever can be set small. Therefore, it becomes possible to provide a lock mechanism that improves operability and saves space.

  Application Example 5 In the projector according to the application example described above, the first operation unit and the second operation unit generate the driving force by being rotated, and one end portion in each rotation center axis direction In addition, it is preferable that at least a part of the outer peripheral portion that is separated from the respective rotation center axes is exposed from the exterior casing that constitutes the exterior of the projector.

  According to this configuration, since the lock mechanism is configured to save space in a direction orthogonal to the rotation center axis, even if the first operation unit and the second operation unit are arranged on the edge of the outer casing, The projector can be equipped with this lock mechanism. And as for the 1st operation part and the 2nd operation part, at least one part of the one edge part in a rotation center axis direction and an outer peripheral part is exposed from the exterior housing | casing. As a result, the user can select the one of the one end and the outer periphery that is easier to operate in response to the installation orientation of the projector (for example, stationary installation, ceiling installation, etc.) The operability when moving the projection lens can be improved.

  Application Example 6 In the projector according to the application example described above, in the first operation unit and the second operation unit, at least a part of the outer peripheral part is exposed on a side of the outer casing facing the projection surface. It is preferable that the one end portion is exposed on the upper side of the exterior casing in the stationary installation where the projector is stationary.

  According to this configuration, since the first operation unit and the second operation unit are arranged as described above, the projection lens can be operated by an operation from the side facing the projection surface of the exterior housing and the upper side in the stationary installation. Can be moved.

  Application Example 7 In the projector according to the application example described above, the lever mechanism includes a lever operation unit that receives an operation for switching between the locked state and the non-locked state, and the lever operation unit is configured to perform the first operation. It is preferable that it is arrange | positioned between the said one edge part of each part and the said 2nd operation part.

  According to this structure, a lever operation part will be arrange | positioned between the 1st operation part exposed from the upper side in stationary installation, and a 2nd operation part. This makes it possible for the user to easily recognize the place operated to move the projection lens and the place operated to fix the projection lens. In addition, the first operation unit, the second operation unit, and the lever operation unit can be arranged in an orderly manner, and the design of the projector can be improved.

1 is a schematic diagram showing a schematic configuration of a projector according to an embodiment. FIG. 2 is a perspective view showing a part of the appearance of the projector according to the embodiment. FIG. 3 is a perspective view of a projection lens, a lens shift mechanism, and a head body according to the present embodiment. The perspective view which shows the 1st wheel train mechanism of this embodiment, and the 2nd gear train mechanism. The perspective view which shows a part of 1st wheel train mechanism of this embodiment, 2nd wheel train mechanism, and a lock mechanism. The disassembled perspective view which looked at the 1st lock part of this embodiment from the upper part diagonally. The disassembled perspective view which looked at the 1st lock | rock part of this embodiment from diagonally downward. The perspective view which looked at the 1st lock part of this embodiment from the slanting lower part. The disassembled perspective view which shows the state of the 1st moving member in the non-locking state of this embodiment, and a 1st locking member. The disassembled perspective view which shows the state of the 1st moving member in the latching state of this embodiment, and a 1st latching member.

Hereinafter, the projector according to the present embodiment will be described with reference to the drawings.
The projector according to the present embodiment modulates a light beam emitted from a light source according to image information, and projects an image on a projection surface such as a screen.
[Main components of the projector]
FIG. 1 is a schematic diagram illustrating a schematic configuration of a projector 1 according to the present embodiment.
As shown in FIG. 1, the projector 1 includes an outer casing 2 that constitutes an outer casing, a control unit (not shown), an optical unit 3 that includes a light source device 31 and a projection lens 36. Although not shown, a power supply device that supplies power to the light source device 31 and the control unit, a cooling device that cools the optical unit 3, and the like are further arranged inside the exterior housing 2.

  The projector 1 according to this embodiment includes a lens shift mechanism 5 that moves the projection lens 36 and is configured to move an image projected on a screen or the like. Further, the projector 1 of the present embodiment includes a lock mechanism so that the projection lens 36 positioned at a desired position is not moved by mistake. In the following, for convenience of explanation, the direction in which the light beam is emitted from the projection lens 36 is referred to as the front side, and the upper side in the stationary installation where the projector 1 is installed on the desk or the like is referred to as the upper side.

FIG. 2 is a perspective view showing a part of the external appearance of the projector 1 and showing the vicinity of the projection lens 36.
The exterior housing 2 is made of synthetic resin, and as shown in FIG. 2, an upper case 21 that forms the upper portion of the exterior housing 2, a lower case (not shown) that forms the lower portion, and a front that forms the front portion. A case 22 and the like are provided, and these are fixed by screws or the like.

  As shown in FIG. 2, the front case 22 is formed such that the tip of the projection lens 36 is exposed from the center. The upper case 21 and the front case 22 are exposed such that the dial 61 as the first operation unit and the dial 161 as the second operation unit for operating the lens shift mechanism 5 are exposed at the boundary between both members. Is formed. Further, as shown in FIG. 2, an opening 211 is provided between the dial 61 and the dial 161 on the upper surface of the upper case 21 so as to expose the lever operation unit 121 that operates the lock mechanism.

  Although not shown, the exterior housing 2 is provided with an intake port for taking in outside air, an exhaust port for exhausting warm air inside the exterior housing 2 to the outside, and the like.

  The control unit includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and functions as a computer, and is related to control of the operation of the projector 1, for example, image projection. Control and so on.

[Configuration of optical unit]
The optical unit 3 optically processes and projects the light beam emitted from the light source device 31 under the control of the control unit.
As shown in FIG. 1, in addition to the light source device 31, the optical unit 3 includes an integrator illumination optical system 32, a color separation optical system 33, a relay optical system 34, an optical device 4, a projection lens 36, a head body 37, and a lens shift mechanism. 5 and an optical component casing 38 for arranging these members at predetermined positions on the optical path.

  As shown in FIG. 1, the optical unit 3 is formed in a substantially L shape in plan view, and the light source device 31 is detachably disposed at one end, and the projection lens 36 is disposed at the other end. In the following, for convenience of explanation, the direction in which the light beam is emitted from the light source device 31 is described as + X direction, the direction in which light projected from the projector 1 is emitted is defined as + Y direction (forward direction), and the upward direction is described as + Z direction. To do. Further, the ± X direction is the left-right direction.

  The light source device 31 includes a discharge-type light source 311 made of an ultra-high pressure mercury lamp, a metal halide lamp, and the like, a reflector 312, and the like. The light beam emitted from the light source 311 is reflected by the reflector 312 and directed toward the integrator illumination optical system 32. Eject.

  The integrator illumination optical system 32 includes a first lens array 321, a second lens array 322, a polarization conversion element 323, and a superimposing lens 324, and a light beam emitted from the light source device 31 is substantially on the surface of a liquid crystal light valve 43 described later. It is configured to be uniformly irradiated and to be used effectively.

  The color separation optical system 33 includes two dichroic mirrors 331 and 332 and a reflection mirror 333, and the light emitted from the integrator illumination optical system 32 is converted into red light (hereinafter referred to as “R light”) and green light (hereinafter referred to as “R”). G light ”) and blue light (hereinafter referred to as“ B light ”).

  The relay optical system 34 includes an incident side lens 341, a relay lens 343, and reflection mirrors 342 and 344, and has a function of guiding the R light separated by the color separation optical system 33 to the R light liquid crystal light valve 43. The optical unit 3 has a configuration in which the relay optical system 34 guides the R light. However, the configuration is not limited thereto, and may be configured to guide the B light, for example.

The optical device 4 is an electro-optical device 40 provided for each color light (the electro-optical device for R light is 40R, the electro-optical device for G light is 40G, and the electro-optical device for B light is 40B), And a cross dichroic prism 41 as a color synthesizing optical device.
Each electro-optical device 40 includes an incident-side polarizing plate 42, a liquid crystal light valve 43 serving as a light modulation device, and an emission-side polarizing plate 44, and modulates each color light according to image information.

  The cross dichroic prism 41 has a substantially square shape in plan view in which four right angle prisms are bonded together, and two dielectric multilayer films are formed on the interface where the right angle prisms are bonded together. In the cross dichroic prism 41, the dielectric multilayer film reflects the color light modulated by the electro-optical devices 40R and 40B, transmits the color light modulated by the electro-optical device 40G, and synthesizes each color light.

  The projection lens 36 has a plurality of lenses (not shown) arranged along the optical axis 36j, and enlarges and projects the light combined by the cross dichroic prism 41 on the screen.

FIG. 3 is a perspective view of the projection lens 36, the lens shift mechanism 5, and the head body 37.
Although the detailed configuration of the lens shift mechanism 5 will be described later, when the dials 61 and 161 are manually operated, the projection lens 36 is rotated in a first direction orthogonal to each other in a plane orthogonal to the optical axis 36j ( (Up and down direction) and the second direction (left and right direction).

  The head body 37 supports the lens shift mechanism 5 and is attached to the optical component casing 38. The head body 37 is provided with a restricting portion (not shown) that restricts the movement of the projection lens 36 in the vertical direction and the left-right direction. The projection lens 36 is configured to be movable within a range restricted by the restricting portion. ing.

[Configuration of lens shift mechanism]
Here, the lens shift mechanism 5 will be described in detail.
As shown in FIG. 3, the lens shift mechanism 5 includes a first movable part 51, a second movable part (not shown), a first wheel train mechanism 53, a second wheel train mechanism 54, and a lock mechanism 7. .

The first movable portion 51 is a member that is disposed in front of the head body 37 and supports the projection lens 36. The projection lens 36 is fixed to the first movable portion 51 by a bayonet structure using a leaf spring or the like, or a screw.
The first movable portion 51 is configured to be movable with respect to the head body 37 in the vertical direction (± Z direction) orthogonal to the optical axis 36j with respect to the head body 37 when the dial 61 is rotated. The first movable portion 51 is configured such that movement in the vertical direction is restricted by a restriction portion (not shown) provided in the head body 37, and the first movable portion 51 is freely movable while being restricted by the restriction portion.

  The second movable part is disposed between the head body 37 and the first movable part 51. The second movable part guides the movement of the first movable part 51 in the vertical direction (± Z direction), and the dial 161 is rotated so that the first movable part 51 and the horizontal direction perpendicular to the optical axis 36j are operated. It is configured to be movable in the (± X direction). That is, the projection lens 36 supported by the first movable portion 51 is configured to be movable in the vertical direction with respect to the second movable portion, and is configured to be movable in the left-right direction together with the second movable portion. Further, the second movable portion is restricted in movement in the left-right direction by a restriction portion (not shown) provided in the head body 37, and is configured to be freely movable while being restricted by the restriction portion. .

  4 and 5 are perspective views showing a part of the first wheel train mechanism 53, the second wheel train mechanism 54, and the lock mechanism 7. Specifically, FIG. 4 is a diagram in which support portions 55 and 56 described later in the first wheel train mechanism 53 and the second wheel train mechanism 54 are omitted, and FIG. 5 is a diagram illustrating the first wheel train mechanism 53 and the second wheel train. FIG. 5 is a diagram in which a part of members constituting the row mechanism 54 is omitted.

The first gear train mechanism 53 is a mechanism that moves the first movable portion 51 in the vertical direction, and includes a dial 61, a first transmission portion 8, and a support portion 55 as shown in FIGS. 4 and 5. .
The dial 61 generates a driving force for moving the first movable portion 51 in the vertical direction by a user's rotation operation. As shown in FIG. 3, the dial 61 is disposed on the upper side in the vicinity of the + X side end portion of the lens shift mechanism 5.

  As shown in FIG. 4, the dial 61 has a shape in which a conical tip portion is cut, and is disposed so as to be rotatable around a rotation center axis 61j along the vertical direction. A concave portion is provided on the top surface of the dial 61, that is, one end portion in the direction of the rotation center axis 61j, and a rib 611 that can be held by the user is formed in the central portion of the concave portion. . The outer periphery (side surface 612) of the dial 61 that is separated from the rotation center shaft 61j is provided with unevenness for preventing slippage when operated by the user.

  As shown in FIG. 2, the dial 61 is arranged such that the ribs 611 are exposed from the upper surface of the exterior housing 2 and a part of the side surface 612 is exposed from the front side (side facing the projection surface) of the exterior housing 2. Is done. The dial 61 is configured to be capable of rotating operation (upper surface operation) with the ribs 611 sandwiched and rotating operation (side operation) by pressing the side surface 612 in the tangential direction.

As shown in FIG. 4, the first transmission unit 8 includes gears 81, 82, 83 and a lead screw 84.
As shown in FIG. 4, the gear 81 is arranged below the dial 61 with the rotation center axis 61j of the dial 61 as the same axis, and is located below the upper gear 81a and the upper gear 81a located on the dial 61 side. The lower gear 81b is stacked. The outer diameter of the lower gear 81b is formed larger than the outer diameter of the upper gear 81a.
The dial 61 and the gear 81 are assembled so as to rotate integrally. The driving force generated by the rotation operation of the dial 61 is transmitted to the gear 81, and the gear 81 rotates together with the dial 61. The lower gear 81b corresponds to a first rotating portion that is locked by a first locking member 711 described later.

The gear 82 is disposed behind the gear 81 (on the −Y side), and includes a lower gear 82a that meshes with the upper gear 81a, and an upper gear 82b that is stacked above the lower gear 82a.
The gear 83 is disposed rearward (−Y side) of the gear 82 and meshes with the upper gear 82b.

  The lead screw 84 has a thread groove formed on the outer periphery, one end is inserted through an insertion hole provided in the center of the gear 83, and the other end is between the gear 83 and the thread groove. It is supported by the head body 37. The gear 83 and the lead screw 84 are disposed so as to be integrally rotatable with a rotation center axis along the vertical direction being coaxial.

The support portion 55 supports the dial 61 and the gears 81, 82, and 83 and is attached to the head body 37. As shown in FIG. 5, the support portion 55 includes an upper support member 551 and a lower support member 552 positioned below the upper support member 551.
The upper support member 551 and the lower support member 552 are formed from sheet metal by pressing or the like, the dial 61 is positioned above the upper support member 551, and the gears 81, 82, and 83 are connected to the upper support member 551. The lower support member 552 is supported so as to be positioned. The upper support member 551 and the lower support member 552 are fixed with screws. Note that the lower support member 552 has a function of supporting the lock mechanism 7, and a configuration related to this function will be described in detail later.

  The lead screw 84 is engaged with a pulling member (not shown) that pulls the first movable portion 51, and the pulling member is provided with a protruding portion that is locked to the first movable portion 51 in the vertical direction. ing.

  When the dial 61 is rotated, the lead screw 84 is rotated via the gears 81, 82, 83, and the traction member engaged with the lead screw 84 is moved according to the rotation direction of the dial 61. As a result, the first movable part 51, that is, the projection lens 36 supported by the first movable part 51 moves in the vertical direction. In the lens shift mechanism 5 of the present embodiment, when the dial 61 is rotated clockwise as viewed from above, the projection lens 36 is moved upward, and when the dial 61 is rotated counterclockwise, the projection lens 36 is moved downward. Configured to move to.

The second wheel train mechanism 54 is a mechanism for moving the first movable portion 51, that is, the projection lens 36 in the left-right direction by moving the second movable portion in the left-right direction, as shown in FIGS. , Dial 161, second transmission portion 9, and support portion 56.
The dial 161 is composed of a member common to the dial 61, and generates a driving force for moving the second movable portion in the left-right direction by a user's rotation operation. As shown in FIG. 3, the dial 161 can be rotated around the rotation center axis 161 j (see FIG. 4) along the vertical direction on the upper side in the vicinity of the −X side end portion of the lens shift mechanism 5 as in the dial 61. Placed in.

  As shown in FIG. 2, the dial 161 is arranged so that the ribs 1611 are exposed from the upper side of the outer casing 2 and a part of the side surface 1612 is exposed from the front side of the outer casing 2 as in the dial 61. . The dial 161 is configured to rotate by an upper surface operation or a side surface operation in the same manner as the dial 61.

As shown in FIG. 4, the second transmission unit 9 includes gears 91, 92, 93, 94, a bevel gear 95, and a lead screw 96.
The gears 91 and 92 are formed of members common to the gears 81 and 82 of the first transmission unit 8, the gear 91 includes an upper gear 91a and a lower gear 91b, and the gear 92 includes the lower gear 92a and the upper gear 92b. have.
Like the gear 81, the gear 91 is assembled so that the rotation center axis 161 j of the dial 161 is coaxial and rotates integrally with the dial 161. The driving force generated by the rotation operation of the dial 161 is transmitted to the gear 91, and the gear 91 rotates together with the dial 161. The lower gear 91b corresponds to a second rotating portion that is locked by a second locking member 721 described later.

The gear 92 is disposed behind the gear 91 (on the −Y side) with the lower gear 92a meshing with the upper gear 91a.
The gear 93 is arranged in mesh with the upper gear 92b behind the gear 92 (on the −Y side).
The gear 94 is arranged behind the gear 93 (−Y side), and has a gear 941 meshing with the gear 93 and a bevel gear 942 provided below the gear 941 with the rotation center axis of the gear 941 being coaxial. ing.

The bevel gear 95 is formed so as to mesh with the bevel gear 942 and is arranged so that the rotation center axis is along the left-right direction.
An insertion hole is provided in the central portion of the bevel gear 95, and one end of the lead screw 96 is inserted into the insertion hole, and the bevel gear 95 and the lead screw 96 are coaxial with the central axis along the left-right direction. It is comprised so that rotation is possible integrally.

  The lead screw 96 has a thread groove formed on the outer periphery, and is supported by the head body 37 between the bevel gear 95 and the thread groove and at the end opposite to the side where the bevel gear 95 is disposed. .

The support portion 56 supports the dial 161 and the gears 91, 92, 93, 94 and is attached to the head body 37. As shown in FIG. 5, the support portion 56 includes an upper support member 561 and a lower support member 562 positioned below the upper support member 561.
The upper support member 561 and the lower support member 562 are formed from sheet metal by press working or the like, the dial 161 is located above the upper support member 561, and the gears 91, 92, 93, 94 are the upper support members. It is supported so that it may be located between 561 and the lower side support member 562. The upper support member 561 and the lower support member 562 are fixed with screws. The lower support member 562, like the lower support member 552, has a function of supporting the lock mechanism 7, and a configuration related to this function will be described in detail later.

The lead screw 96 is engaged with a pulling member (not shown) that pulls the second movable portion, and the pulling member is provided with a protruding portion that is locked to the second movable portion in the left-right direction. .
When the dial 161 is rotated, the lead screw 96 is rotated through the gears 91, 92, 93, 94 and the bevel gear 95, and the traction member meshed with the lead screw 96 is moved according to the rotation direction of the dial 161. To do. As a result, the second movable part, that is, the projection lens 36 supported by the second movable part via the first movable part 51 moves in the left-right direction. In the lens shift mechanism 5 of this embodiment, when the dial 161 is rotated clockwise as viewed from above, the projection lens 36 moves in the + X direction, and when the dial 161 is rotated counterclockwise, the projection lens 36 is − It is configured to move in the X direction.

[Configuration of locking mechanism]
The lock mechanism 7 is configured to be switchable between a locked state in which the lower gear 81b as the first rotating part and the lower gear 91b as the second rotating part are locked, and an unlocked state in which the locked state is released. Has been. In other words, the lock mechanism 7 locks the lower gears 81b and 91b in the locked state so that the dials 61 and 161 cannot be rotated, and the position of the projection lens 36 is not changed. It is configured to be fixed. The locking mechanism 7 is configured to release the locking of the lower gears 81b and 91b in the non-locking state, rotate the dials 61 and 161, and change the position of the projection lens 36.

As shown in FIG. 4, the lock mechanism 7 includes a first lock portion 71 that locks the rotation of the lower gear 81b, a second lock portion 72 that locks the rotation of the lower gear 91b, and a lock mechanism 7 as shown in FIG. The lever mechanism 10 that operates the first lock portion 71 and the second lock portion 72 is provided.
The 1st lock part 71 and the 2nd lock part 72 are comprised with the common member, and it demonstrates paying attention to the 1st lock part 71 here.

6 and 7 are exploded perspective views of the first lock portion 71, FIG. 6 is a view as seen from above and FIG. 7 is a view as seen from below. FIG. 8 is a perspective view of the first lock portion 71 as viewed obliquely from below.
As shown in FIGS. 6 to 8, the first lock part 71 includes a first locking member 711 and a coil spring 713 as an urging member.

As shown in FIGS. 6 and 7, the first locking member 711 is disposed below the gear 81. The first locking member 711 is configured to be movable along the rotation center shaft 61j, and locks the lower gear 81b at a predetermined position in the direction of the rotation center shaft 61j.
The first locking member 711 has a columnar main body portion 7111 and a pair of protruding portions 7112 that protrude downward from the main body portion 7111.

As shown in FIG. 6, a concave portion into which the lower gear 81b can be inserted is formed on the upper surface of the main body portion 7111. A tooth portion 711G that meshes with the lower gear 81b is provided on the inner peripheral surface of the concave portion. .
The tooth portion 711G is formed so as to be thinned out on the inner peripheral surface of the recess, and as shown in FIG. 6, the tooth group 711Gr composed of a plurality of tooth portions 711G extends along the circumference centering on the rotation center axis 61j. Are provided at equal intervals of 120 ° (in FIG. 6, one tooth group 711Gr is not shown). The tooth portion 711G is formed so as to mesh with the lower gear 81b in a well-balanced manner around the rotation center shaft 61j. Note that the number of tooth groups 711Gr is not limited to three, and for example, four tooth groups 711Gr may be provided at equal intervals of 90 ° in the circumferential direction around the rotation center axis 61j. Moreover, you may comprise so that the tooth | gear part 711G may be provided in the perimeter of the internal peripheral surface of a recessed part.
And the round hole 711H centering on the rotation center axis 61j is formed in the bottom face of a recessed part.

As shown in FIG. 7, a concave portion 711A and a convex portion 711B are provided on the lower surface of the main body portion 7111.
The recess 711A is located on the rotation center axis 61j and extends in a direction perpendicular to the rotation center axis 61j, and the projections 711B are provided on both sides of the recess 711A. In addition, a slope 711C is formed between the recess 711A and the projection 711B, and the lower surface of the main body 7111 is formed so that the recess 711A and the projection 711B are smoothly connected by the slope 711C.

The pair of projecting portions 7112 are portions inserted into the lower support member 552, restrict the rotation of the first locking member 711, and guide the movement of the first locking member 711 in the direction of the rotation center axis 61j. It has a function.
The pair of protrusions 7112 is formed in a columnar shape, extends downward from the protrusions 711B on both sides of the recess 711A, and has a screw hole 7112S at the tip. The pair of convex portions 711B, the slope 711C, and the pair of projecting portions 7112 are formed so as to be 180 ° rotationally symmetric with respect to the rotation center axis 61j.

The lower support member 552 has a function of supporting a first moving member 14 described later of the first lock portion 71 and the lever mechanism 10.
As shown in FIGS. 6 and 7, the lower support member 552 is provided with a support pin 552 p that pivotally supports the first locking member 711 and the first moving member 14. Further, the lower support member 552 is formed with an insertion hole 5521 through which the pair of protrusions 7112 are inserted, and an arcuate guide hole 5522 centered on the rotation center axis 61j. Further, as shown in FIG. 7, a protrusion 5523 is provided on the lower surface of the lower support member 552.

  The first locking member 711 is disposed on the upper surface side of the lower support member 552 via the first moving member 14. Specifically, the first locking member 711 is supported by the support pin 552p with the protruding portion 7112 inserted through the insertion hole 5521 and the support pin 552p inserted through the round hole 711H.

  The coil spring 713 is inserted into a portion protruding from the lower surface of the lower support member 552 of the protruding portion 7112 inserted through the insertion hole 5521, and is disposed between the lower surface and the screw SC attached to the screw hole 7112S (FIG. 8). The coil spring 713 biases the first locking member 711 in the direction of the rotation center axis 61j, specifically, the direction in which the first locking member 711 is separated from the lower gear 81b (lower support member 552 side). .

As shown in FIGS. 4 and 5, the second lock portion 72 includes a second locking member 721 formed in the same manner as the first lock portion 71 and a coil spring 723 as an urging member. Although the detailed illustration of the lower support member 562 is omitted, the support pins 552p, the insertion holes 5521, the guide holes 5522, and the projections 5523 provided on the lower support member 552 are similar to the support pins, the insertion holes, the guide holes, and the like. Has protrusions.
Then, like the first locking member 711, the second locking member 721 is urged by the coil spring 723 and supported by the lower support member 562. The second locking member 721 is configured to be movable along the rotation center axis 161j, and locks the lower gear 91b at a predetermined position.

  The lever mechanism 10 moves the first locking member 711 and the second locking member 721 to switch between the locked state and the non-locked state. As shown in FIG. 5, the lever mechanism 10 includes a first moving member 14, a second moving member 15, a lever 11, a lever auxiliary body 12, and a shaft 13 (see FIG. 3).

As shown in FIG. 5, the first moving member 14 is disposed between the first locking member 711 and the lower support member 552 and rotates when the lever 11 is operated, so that the first locking member 711 is operated. Is moved along the rotation center axis 61j.
As shown in FIG. 5, the second moving member 15 is disposed between the second locking member 721 and the lower support member 562, and rotates when the lever 11 is operated. Is moved along the rotation center axis 161j.

The first moving member 14 and the second moving member 15 are a common member, and here, the first moving member 14 will be described with focus.
As shown in FIGS. 6 and 7, the first moving member 14 has a main body portion 141 and a guide pin 142.

The main body 141 is formed in a columnar shape centered on the rotation center shaft 61j, a round hole 14H centered on the rotation center shaft 61j is formed in the center portion, and a pair of presses protruding upward on the upper surface. A portion 14A is provided.
The pair of pressing portions 14A are portions that press the first locking member 711 in order to move the first locking member 711 along the rotation center axis 61j in the direction in which the lower gear 81b is disposed. The movable member 14 is formed in a size that can contact the concave portion 711 </ b> A of the moving member 14.

  The guide pin 142 is a part that is pulled by the lever 11 and extends downward from the edge of the lower surface of the main body 141 and is formed in a columnar shape.

  The first moving member 14 is inserted into the guide hole 5522 so that the tip of the guide pin 142 protrudes from the lower surface of the lower support member 552 (see FIG. 8), and the support pin 552p is inserted into the round hole 14H to rotate. It is supported by the support pin 552p as possible.

  As described above, the first moving member 14 is sandwiched between the first locking member 711 biased toward the lower support member 552 by the coil spring 713 and the lower support member 552, and is rotatably attached to the support pin 552p. Supported.

As shown in FIG. 5, the lever 11 is formed between the first lock portion 71 and the second lock portion 72, and is configured to be slidable in the left-right direction (± X direction).
The lever 11 is formed from sheet metal by press working or the like. The lever 11 includes a central portion 111 located between the first lock portion 71 and the second lock portion 72, a bent portion 112 bent downward from the + X side end portion of the central portion 111, and a −X side of the central portion 111. It has a bent portion 113 bent downward from the end portion, a traction portion 114 disposed on the lower surface of the lower support member 552, and a traction portion 115 disposed on the lower surface of the lower support member 562.

As shown in FIG. 5, the central portion 111 is formed along the XY plane and has a protruding portion 111 </ b> A that protrudes forward.
The bent portions 112 and 113 are formed with U-shaped notches 112A and 113A that open rearward (−Y side).

As shown in FIG. 8, the pulling portion 114 is inserted with a notch 114 </ b> A for locking the guide pin 142 of the first moving member 14 in the ± X direction and a protrusion 5523 of the lower support member 552. A guide hole 114B for guiding the slide in the direction is formed.
Although not shown, the pulling portion 115 has a notch 114A formed in the pulling portion 114, a notch similar to the guide hole 114B, and a guide hole.

The lever auxiliary body 12 is made of synthetic resin, and is fixed to the upper surface of the protruding portion 111A of the lever 11 as shown in FIG.
At the center of the upper surface of the lever auxiliary body 12, a lever operation part 121 that protrudes upward and receives an operation by the user is formed. A knob 121A that protrudes further upward is provided at the center of the lever operating portion 121.
As shown in FIG. 2, the lever operation unit 121 is disposed so as to be exposed from the exterior housing 2 and located between the dial 61 and the dial 161.

The shaft 13 is inserted into the insertion hole 561H provided in the upper support member 561 and the notches 112A and 113A (both see FIG. 5) of the lever 11, and guides the movement of the lever 11 in the left-right direction.
The lever mechanism 10 moves in the direction in which the lever 11 is guided and pressed by the shaft 13 when the finger of the user is put on the knob 121A and pressed in the left-right direction.

[Operation of locking mechanism]
Here, the operation of the lock mechanism 7 will be described.
The lock mechanism 7 moves the lever 11 by operating the lever operation unit 121, and moves the first locking member 711 and the second locking member 721 via the first moving member 14 and the second moving member 15. The locked state where the lower gear 81b in the first transmission unit 8 and the lower gear 91b in the second transmission unit 9 are locked and the locked state is released, that is, the lower gear 81b and the lower gear 91b are rotatable. Switch to the non-locking state.

When the lever 11 is moved, the first moving member 14 and the second moving member 15 operate in the same manner, and the first locking member 711 and the second locking member 721 operate in the same manner. The operation of the first moving member 14 and the first locking member 711 will be described below.
FIG. 9 is an exploded perspective view showing a state of the first moving member 14 and the first locking member 711 in the non-locking state. FIG. 10 is an exploded perspective view showing a state of the first moving member 14 and the first locking member 711 in the locked state.

As shown in FIG. 2, the lock mechanism 7 of the present embodiment is set to be in an unlocked state when the lever operation unit 121 is positioned on the −X side of the opening 211.
Specifically, when the lever operation unit 121 is positioned on the −X side of the opening 211, the lever 11 is positioned on the −X side most within the movable range.

  When the lever 11 is positioned closest to the −X side, as shown in FIG. 9, the first moving member 14 has a guide pin 142 pulled by the notch 114 </ b> A of the lever 11 and a guide hole 5522 in the view of FIG. 9. It will be in the state located on the left side. In this state, in the first locking member 711 biased toward the lower support member 552, the recess 711A comes into contact with the pressing portion 14A of the first moving member 14, and the tooth portion 711G (see FIG. 6) is the gear. 81 is separated from the lower gear 81b.

  Although a detailed drawing is omitted, also in the second lock portion 72, when the lever 11 is located at the most -X side, the second locking member 721 has a state in which the tooth portion is separated from the lower gear 91b of the gear 91. Become. That is, the lock mechanism 7 is configured so that the first locking member 711 and the second locking member 721 do not lock the lower gears 81b and 91b when the lever operation unit 121 is positioned on the −X side of the opening 211. The locked state is reached, and the projection lens 36 can be moved by rotating the dials 61 and 161.

  On the other hand, when the lever operation unit 121 is moved in the + X direction from the unlocked state, the lever 11 moves in the + X direction (see arrow M1 in FIG. 10), and the first moving member 14 has the guide pin 142 as the lever. 11 is pulled by the notch 114A and rotates about the rotation center axis 61j counterclockwise in the drawing view of FIG. 9 (see arrow M2 in FIG. 10). The rotation of the first locking member 711 is restricted by the protruding portion 7112 being inserted through the insertion hole 5521, and the first locking member 711 is convex with the concave portion 711A where the pressing portion 14A of the first moving member 14 contacts in the locked state. Since the inclined surface 711 </ b> C is formed between the portions 711 </ b> B, the pressing portion 14 </ b> A sequentially moves from the recess 711 </ b> A to the inclined surface 711 </ b> C and the protrusion 711 </ b> B with respect to the first locking member 711 as the first moving member 14 rotates. The first locking member 711 is moved upward by being pressed by the pressing portion 14A while changing the place of contact (see arrow M3 in FIG. 10).

When the lever 11 is located at the most + X side within the movable range, as shown in FIG. 10, the first moving member 14 has the guide pin 142 on the right side of the guide hole 5522 in the drawing view of FIG. 14 A of press parts will be in the state contact | abutted to the convex part 711B.
And the 1st latching member 711 covers the outer periphery of the lower gear 81b, and the tooth | gear part 711G (refer FIG. 6) meshes with the lower gear 81b, and will be in a latching state.

  Although a detailed drawing is omitted, also in the second lock portion 72, when the lever 11 is positioned closest to the + X side, the second locking member 721 is in a state where the tooth portion meshes with the lower gear 91b. That is, the lock mechanism 7 is in a locked state in which the lower gears 81b and 91b are locked when the lever operation unit 121 is positioned on the + X side of the opening 211. Since the lower gears 81b and 91b are configured to transmit the driving force from the dials 61 and 161, respectively, when they are locked, the dials 61 and 161 cannot be rotated, that is, the projection lens 36. Is in a fixed state.

When the lever operation unit 121 is moved to the −X side of the opening 211 from the locked state, the first moving member 14 and the second moving member 15 are pulled by the lever 11 and engaged from the non-locked state. It rotates in the opposite direction to the rotation when reaching the stop state. And the 1st locking member 711 and the 2nd locking member 721 are spaced apart from the lower gears 81b and 91b, respectively, and will be in a non-locking state.
As described above, the lock mechanism 7 is switched between the state in which the projection lens 36 can move in two directions and the state in which the projection lens 36 cannot move by operating the lever operation unit 121.

As described above, according to the present embodiment, the following effects can be obtained.
(1) Since the lens shift mechanism 5 includes the lock mechanism 7 configured as described above, the dials 61 and 161 are operated in the unlocked state to move the projection lens 36, and the dial is locked in the locked state. It becomes possible to fix the projection lens 36 at a desired position in a state where the rotation operations 61 and 161 cannot be performed. Accordingly, it is possible to prevent the projection lens 36 from moving by touching the dials 61 and 161 by mistake, and to remove the anxiety that the projection lens 36 may be moved due to vibration or the like from the user. It becomes.
In addition, the lock mechanism 7 is in the locked state by moving along the rotation center axes 61j and 161j of the members (gears 81 and 91) locked by the first locking member 711 and the second locking member 721. Therefore, the lock mechanism 7 that simplifies the structure and saves space in the direction orthogonal to the rotation center shafts 61j and 161j (around the gears 81 and 91) is possible. In particular, in the lens shift mechanism 5 that allows the projection lens 36 to move in two directions (vertical direction and horizontal direction), the structure becomes complicated, so the effect becomes remarkable. Therefore, it is possible to provide the projector 1 including the lens shift mechanism 5 that can move the projection lens 36 and fix the projection lens 36 at a desired position while suppressing the increase in size and complexity of manufacture.

  (2) The first locking member 711 and the second locking member 721 are configured to be able to lock gears 81 and 91 coaxial with the rotation center shafts 61j and 161j of the dials 61 and 161, respectively. As a result, since the influence of backlash is small compared to the configuration in which the members other than the gear 81 in the first transmission portion 8 and the members other than the gear 91 in the second transmission portion 9 are locked, the dials 61 and 161 in the locked state The shakiness can be reduced. Therefore, the projection lens 36 can be fixed more reliably at a desired position.

  (3) The first locking member 711 and the second locking member 721 are urged by the coil springs 713 and 723 in the directions of the rotation center axes 61j and 161j, respectively. Accordingly, the first locking member 711 and the second locking member 721 are positioned at stable positions without being affected by the installation posture of the projector 1 (for example, stationary installation or ceiling installation). Become. Therefore, it is possible to provide the projector 1 that can fix the projection lens 36 at a desired position without being affected by the installation posture.

  (4) The operating force that slides the lever 11 is transmitted to the first moving member 14 and the second moving member 15 as rotational torque, and moves the first locking member 711 and the second locking member 721. Accordingly, the first locking member 711 and the second locking member 721 are made smoother than the configuration in which the operating force for sliding the lever 11 is linearly transmitted to the first locking member 711 and the second locking member 721. It is possible to set the lever to a small amount. Therefore, it becomes possible to provide a lock mechanism 7 that improves operability and saves space.

  (5) Since the first locking member 711 and the second locking member 721 are formed so as to cover the lower gears 81b and 91b and lock in a balanced manner in the locked state, The force which inclines is suppressed. Therefore, even if an excessive rotational operation force is applied to the dials 61 and 161 in the locked state, the lens shift mechanism 5 can be prevented from being damaged.

  (6) Since the lock mechanism 7 is configured to save space in a direction orthogonal to the rotation center axes 61j and 161j, the projector 1 can be arranged even if the dials 61 and 161 are arranged on the edge of the exterior housing 2. The lock mechanism 7 can be mounted. The dial 61 is arranged such that the ribs 611 are exposed from the upper surface of the exterior housing 2 and a part of the side surface 612 is exposed from the front side of the exterior housing 2. Accordingly, the user can select one of the top surface operation and the side surface operation which is easy to operate in accordance with the installation posture of the projector 1 (for example, stationary installation, ceiling installation, etc.). The operability when moving the lens 36 can be improved.

  (7) The lever operation unit 121 is disposed between the dial 61 and the dial 161 exposed from the upper surface of the exterior housing 2. As a result, it is possible for the user to easily recognize the location operated to move the projection lens 36 and the location operated to fix the projection lens 36. Further, the dials 61 and 161 and the lever operation unit 121 can be arranged in an orderly manner, and the design of the projector 1 can be improved.

  (8) The lock mechanism 7 slides the one lever 11 so that the two locking members (the first locking member 711 and the second locking member 721) are in the non-locking state and the locking state. Since switching is performed, it is possible to easily switch between a state in which the projection lens 36 is movable in two directions (vertical direction and horizontal direction) and a state in which the projection lens 36 is fixed.

(Modification)
In addition, you may change the said embodiment as follows.
In the embodiment, the gears 81 and 91 are configured to be locked in the locked state. However, a member other than the gear 81 in the first transmission unit 8 and a member other than the gear 91 in the second transmission unit 9 are used. You may comprise so that it may latch.

  In the embodiment, the first locking member 711 and the second locking member 721 are formed so as to cover the lower gears 81b and 91b in the locked state, but if the lower gears 81b and 91b can be locked, The gears 81b and 91b may be formed so as to be exposed.

  In the above-described embodiment, the coil springs 713 and 723 are used as the biasing member, but a plate spring or the like may be configured as the biasing member.

  In place of the first moving member 14 and the second moving member 15 of the embodiment, the pulling portions 114 and 115 of the lever 11 are provided with pressing portions having inclined surfaces that are inclined in the vertical direction, and the first locking member and the second locking member are provided. A pressure receiving portion having a slope corresponding to this slope is formed on the lower surface side of the member, and when the lever 11 is slid, the pressing portion presses the pressure receiving portion, whereby the first locking member and the second locking member are You may comprise so that it may move.

  The first operation unit and the second operation unit of the embodiment are configured to generate a driving force by being rotated, but the driving force is generated by sliding the first operation unit and the second operation unit. You may comprise. The driving force may be transmitted to the transmission gear using a rack or the like so that the transmission gear can be locked.

  In the embodiment, the lever 11 is configured to slide when the lever operation unit 121 is moved in the left-right direction. However, the lever 11 may be configured to slide by rotation of the lever operation unit. .

  The projector 1 of the embodiment uses the transmissive liquid crystal light valve 43 as the light modulation device, but may use a reflective liquid crystal light valve. Further, a device using a micromirror array or the like as the light modulation device may be used.

  The light source 311 is not limited to a discharge lamp, and may be a solid light source such as a lamp of another type or a light emitting diode.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Exterior housing, 3 ... Optical unit, 5 ... Lens shift mechanism, 7 ... Lock mechanism, 8 ... 1st transmission part, 9 ... 2nd transmission part, 10 ... Lever mechanism, 11 ... Lever, 14 ... 1st moving member, 14A ... pressing part, 15 ... 2nd moving member, 21 ... upper case, 22 ... front case, 36 ... projection lens, 36j ... optical axis, 51 ... 1st movable part, 55, 56 ... support 61, 161 ... Dial, 61j, 161j ... Center axis of rotation, 81, 82, 83, 91, 92, 93, 94 ... Gear, 81a, 91a ... Upper gear, 81b, 91b ... Lower gear, 84, 96 ... Lead screw, 114, 115 ... towing part, 121 ... lever operation part, 121A ... knob, 611, 1611 ... rib, 612, 1612 ... side face, 711 ... first locking member, 711G ... tooth part, 713, 723 Coil spring, 721 ... the second locking member.

Claims (7)

A projector that includes a projection lens and a lens shift mechanism that moves the projection lens, and that projects an image on a projection surface,
The lens shift mechanism is
A movable part that supports the projection lens and is movable in a first direction and a second direction orthogonal to each other in a plane orthogonal to the optical axis of the projection lens;
A first operation unit that manually generates a driving force for moving the movable unit in the first direction;
A second operating part for manually generating a driving force for moving the movable part in the second direction;
A first rotating unit that rotates by receiving a driving force transmitted from the first operating unit;
A second rotating unit that rotates by receiving a driving force transmitted from the second operating unit;
A locking mechanism capable of switching between a locking state for locking the first rotating part and the second rotating part and a non-locking state for allowing the first rotating part and the second rotating part to rotate;
With
The locking mechanism is
A first locking member that moves along the rotation center axis of the first rotating part and is capable of locking the first rotating part;
A second locking member that moves along the rotation center axis of the second rotating part and is capable of locking the second rotating part;
A lever mechanism that moves the first locking member and the second locking member to switch between the locked state and the unlocked state;
A projector comprising: The projector according to claim 1,
The first operation unit and the second operation unit generate the driving force by being rotated,
The first rotating part is a gear having the same rotation center axis as the first operating part and rotating together with the first operating part.
The projector according to claim 1, wherein the second rotation unit is a gear having the same rotation center axis as the second operation unit and rotating together with the second operation unit. The projector according to claim 1 or 2, wherein
The locking mechanism is
An urging member that urges the first locking member in the direction of the rotation center axis of the first rotating portion;
A biasing member that biases the second locking member in the direction of the rotation center axis of the second rotating portion;
A projector comprising: It is a projector as described in any one of Claims 1-3, Comprising:
The lever mechanism is
A first moving member that moves the first locking member along the rotation center axis of the first rotating portion by rotation;
A second moving member that moves the second locking member along the rotation center axis of the second rotating portion by rotation;
A lever that rotates the first moving member and the second moving member by sliding;
A projector comprising: The projector according to claim 1,
The first operation unit and the second operation unit generate the driving force by being rotated, and have one end portion in the direction of each rotation center axis and an outer peripheral portion that is separated from each rotation center axis At least a part of the projector is exposed from an exterior casing constituting the exterior of the projector. The projector according to claim 5, wherein
In the first operation part and the second operation part, at least a part of the outer peripheral part is exposed on a side of the outer casing facing the projection surface, and the one end part is a installation where the projector is stationary. A projector that is exposed on an upper side of the outer casing in a standing installation. The projector according to claim 5 or 6, wherein
The lever mechanism includes a lever operation unit that receives an operation of switching between the locked state and the unlocked state,
The projector is characterized in that the lever operation unit is disposed between the one end portions of the first operation unit and the second operation unit.

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