JP3374091B2 - Multi-stacking projector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a multi-stacking projection apparatus having a plurality of liquid crystal projectors and superimposing an image of each liquid crystal projector on a screen. 2. Description of the Related Art Generally, an image projected by a liquid crystal projector is dark. Obtaining a bright image requires a lamp with a large capacity and a liquid crystal panel that can withstand the heat generated by this lamp, but the cost for this is soaring and extremely expensive. Therefore, it has been practiced to superimpose images from a plurality of liquid crystal projectors on a screen to obtain a bright image. A conventional multi-stacking projection apparatus for mounting a plurality of liquid crystal projectors is manufactured by a dedicated machine depending on the number of mounted projectors, such as a model equipped with two liquid crystal projectors and a model equipped with three liquid crystal projectors. However, there are few common parts between different models, and there is a problem that the production cost is high. In addition, in order to superimpose images from the mounted liquid crystal projectors without deviation, it is necessary to independently adjust the tilt and the horizontal position of the plurality of liquid crystal projectors, but the mechanism for this is complicated. In this respect, there is also a problem that the cost is increased and the operation for adjustment is troublesome. The present invention clarifies a multi-stacking projection device that can solve the above problem. A multi-stacking projection apparatus according to the present invention comprises a plurality of unitized support stands (1) including a mounting plate (2) on which a liquid crystal projector (6) is mounted, and all of them are stacked. Of the support or the rest of the support except one,
The tilting mechanism of the mounting plate (2) and the adjustment mechanism in the left-right direction are linked. More specifically, the mounting plate (2) is mounted on a support plate (11), and the adjusting mechanism includes a tilt adjusting mechanism (3) and a left / right adjusting mechanism (4). ) Is a supporting portion for rotatably and swingably supporting a substantially central portion on one end side of the mounting plate (2).
(30), two inclination adjusting screws (35) (35) that are threaded through on both sides on the other end side of the mounting plate (2), and the tips of which are applied to the support plate (11);
It is constituted by a clamp screw (36) screwed into the support plate (11) through the mounting plate in a virtual triangle formed by the support portion (30) and the two inclination adjusting screws (35) (35). , Left and right adjustment mechanism (4)
Is a clamp screw (36) than the support portion (30) and the support portion.
Left and right adjustment screws that are screwed sideways to the mounting plate (2) or the support plate (11) and that rotate and move the mounting plate (2) left and right around the support part (30) with screw thrust to position. (41). The operation and effect of the mounting plate (2) of each support (1) can be adjusted for tilt and left and right. Therefore, each liquid crystal projector (6) set on the mounting plate (2) is individually mounted. Tilt adjustment alone,
Left and right adjustment is possible. For this reason, the video from each projector (6) can be superimposed on the screen without displacement. However, tilt adjustment and left / right adjustment are not necessarily required for one reference projector (6). Therefore, tilt and left / right adjustment are required for the mounting plate (2) of the reference projector (6). Adjustment mechanism can be omitted. [0007] The multi-stacking projection device of the present invention comprises:
It is only necessary to stack the unitized supports (1), (1a) and (1b) according to the number of projectors (6) to be mounted,
In addition, the mounting plate (2) and the supporting plates (11) and (11) of each support (1) can be made of the same parts as the other support, and the mounting plates (2) that are vertically adjacent to each other.
(2) Spacer for providing a projector accommodation space between them
Since (12) can also use common parts, parts can be standardized and the number of kinds of parts can be reduced, and assembling can be simplified, so that costs can be reduced. [0008] Configuration FIG. 1 of the embodiment of the invention multi-stacking device shows a multi-stacking projection apparatus three-stage can be mounted the three liquid crystal projector. 2nd stage, 3
The first stage supports (1) and (1b) have the same configuration, but the first stage support (1a) has a slightly different configuration. The first stage support (1a) is provided with a pair of bar-shaped base plates (13) and (13) in parallel, and a pair of band-shaped support plates (1
1) (11) is mounted, and a mounting plate (2) is attached to support plates (11) and (11). Both ends of the base plate (13) protrude from the support plate (11), and a horizontal adjustment screw (14) is threaded through the protruding portion from above to below, and screwed into the horizontal adjustment screw (14). At the bottom of the seat plate (1
5) is pivoted. The mounting plate (2) has a plurality of projector mounting holes (21). The mounting plate (2) is an adjustment mechanism (3)
The adjustment mechanism is attached to the support plate (11) via (4), and includes an inclination adjustment mechanism (3) and a left and right adjustment mechanism (4). The tilt adjusting mechanism (3) includes a supporting portion (30) for rotatably and swingably supporting a substantially central portion on one end side of the mounting plate (2) on a supporting plate (11), and a mounting plate (3). Two inclination adjusting screws (35) and (35) screwed into the two corners on the other end side of 2), and a clamp screw for fixing the inclination-adjusted mounting plate (2) to the support plate (11). (36). As shown in FIG. 2, the support portion (30) includes a support plate (1).
A spring (34) is interposed between the mounting plate (2) and the mounting plate (2) with a support bolt (31) penetrating the mounting plate (2) from below, and a nut (33) is screwed. A spherical washer (32) is fitted to a support bolt (31) between the mounting plate (11) and the mounting plate (2), and the mounting plate (2) is supported by the spherical surface of the spherical washer (32). The hole (22) of the mounting plate (2) through which the support bolt (31) penetrates has room for the mounting plate (2) to be slightly inclined with respect to the support bolt (31). The tip of the tilt adjusting screw (35) is applied to the support plate (11), and the tilt adjustment screw (35) is tilted in a direction to separate the support plate (2) from the support plate (11) by placing the plate (2) around the spherical washer (32) by tightening. When it is loosened, the mounting plate (2) can be tilted in a direction to approach the support plate (11). The clamp screw (36) is a double tilt adjusting screw (35)
At the intermediate position of (35), the support plate (30) is placed slightly below the straight line connecting the tilt adjustment screws (35) and (35),
(2) and is screwed to the support plate (11). The clamp screw (36) is tightened to support the entire mounting plate (2).
1) Pressing and fixing to the (11) side, can be screwed to the support plate (11) within the virtual triangle formed by the support part (30) and the two inclination adjusting screws (35) (35) The mounting position does not matter. However, the hole (23) of the mounting plate (2) through which the clamp screw (36) passes
Needs a margin that allows the mounting plate (2) to slightly tilt with respect to the clamp screw (36). The right and left adjusting mechanism (4) of the mounting plate (2) is a mounting plate.
(2) Front center of clamp screw (36) side and clamp screw
At the center of the front end of the support plate (11) on the (36) side, projecting pieces (17) and (18) adjacent to each other on the left and right are projected, and the left and right adjusting screws are set on the projecting pieces (18) on the support plate (11). (41) and the screw (41) is placed on the plate (2)
Threaded to the projection (17). The left and right adjusting screw (41) is prevented from coming off from the protruding piece (18) by a snap ring (42), and by rotating the left and right adjusting screw (41), the support part (3
By rotating the placing plate (2) right and left around the center (0), the position in the left and right direction can be adjusted. The second and third stage supports (1) and (1b) are support plates (11) and (11), a support plate (2) for the support plates (11) and (11), and a support plate.
(2) The tilt adjustment mechanism (3) and the left and right adjustment mechanism on the support plate (11)
The configurations attached via (4) are all the same as those of the first stage support (1a). The difference from the first stage support (1a)
In place of the base plates (13) and (13) of the first stage support (1a), cylindrical spacers (12) are provided at both ends of each support plate (11) and (11) so as to be detachable downward. is there. The spacer (12) is 30 to 60 mm longer than the height of the projector (6). The connecting plates (16) and (16) are provided across the ends of the supporting plates (11) and (11) of the third stage support (1b). Each support plate
(11) The base plate (13) and the connecting plate (16) are provided with holes (not shown) through which a connecting shaft (19) described later penetrates in series. Assembling of the multi-stacking device Before assembling the multi-stacking device, the support plate (11)
(11) Prepare a large number of units with the mounting plate (2) attached between them. The assembled support plate (11) is mounted on a pair of base plates (13) and (13).
(11) and the mounting plate (2) are mounted. Next, four connecting shafts (19)
Is fitted into the holes of the support plate (11) and the base plate (13). A plurality of types of connecting shafts (19) having different lengths are prepared in advance depending on the number of mounted projectors (6). The spacer (12) is fitted on the connecting shaft (19), and the four corners of the assembled supporting plates (11) and (11) and the mounting plate (2) are fitted and mounted on the upper end of the spacer (12). The spacer (12) is fitted to the connecting shaft (19) again, and the connecting shaft is attached to the four corners of the assembled supporting plates (11) and (11) and the mounting plate (2).
(19) Fit. Fit the connecting plate (16) to the upper end of the connecting shaft (19) so as to straddle the uppermost supporting plate (11) (11), and tighten the upper and lower ends of the connecting shaft (19) with the nut (10). The assembly of the stacking device is completed. Adjustment of the multi-stacking device Positioning the mounting plate (2) of each stage support (1) (1a) (1b) by the projector mounting hole (21), the projector
Attach (6). Normally, since the image of the lowermost projector (6a) is used as a reference, the inclination and left / right adjustment of the first-stage mounting plate (2) are locked at an intermediate position in the adjustment range. 1
Display the grid pattern image from the projector (6) on the screen (7) from the projector (6), and adjust the horizontal inclination of the image to the first stage support.
The horizontal adjustment screw (14) in (1a) adjusts the left and right inclination of the entire multi-stacking device. When a trapezoidal distortion occurs in the image, the lens shift amount is adjusted by the lens shift adjustment device of the projector (6), and the horizontal adjustment screw (1) is adjusted.
Eliminate distortion by adjusting 4). Here, the lens shift amount will be described with reference to FIG. (6) (6a) and (6b) are projectors, (61) is a liquid crystal panel of the projector, (7) is a screen, and L1 is
The vertical length of the screen, L2 is the vertical length of the liquid crystal panel, L3
Is the installation interval of the upper and lower projectors, and L4 is (62) the lens shift amount, and the lens shift amount can be calculated as follows. Assuming that L1 = 2540 mm (100 inches) L2 = 45.72 mm (1.8 inches) L3 = 300 mm, L4 = (45.72 / 2540) × 300 = 5 .4mm After adjusting the image of the first stage projector (6a) so that it is projected on the screen (7) without tilt or trapezoidal distortion, the image of the grid pattern is projected from the second stage projector (6). And trapezoidal distortion is eliminated by adjusting the lens shift amount in the same manner as described above. Second stage support (1) tilt adjustment screw
Adjust the vertical position and tilt by the operation of (35),
The left and right adjustment screws (41) are operated to adjust the left and right. The image of the first stage projector (6a) and the image of the second stage projector (6) are completely matched, and the clamp screw (36) is tightened. Similarly, adjustment of the third stage projector (6b) is performed. As described above, the mounting plate (2) of each support (1)
Can be tilted and adjusted left and right.
(2) Each of the liquid crystal projectors (6) set above can be independently adjusted for tilt and left / right. For this reason, the video from each projector (6) can be superimposed on the screen without displacement. However, tilt adjustment and left / right adjustment are not necessarily required for one reference projector (6). Therefore, tilt and left / right adjustment are required for the mounting plate (2) of the reference projector (6). Adjustment mechanism can be omitted. The multi-stacking projection device can simply stack the unitized support base (1) in accordance with the number of projectors (6) to be mounted, and can also mount the support plate (2) on the support base (1). The support plates (11) and (11) can be common parts with other support bases, and the spacers (12) for providing a projector accommodation space between the vertically adjacent mounting plates (2) and (2) are also common parts. Can be used, the parts can be standardized and the types of parts can be reduced, and the parts can be easily assembled. Another Embodiment FIG. 5 shows another support base, and FIG. 6 shows a multi-stacking apparatus using the support base. The lower support (1) in FIG.
The upper stage shows the second stage support. The second-stage support base is obtained by assembling a mounting plate (2) on support plates (11) and (11) via a tilt adjusting mechanism (3) and a left-right adjusting mechanism (4).
It is fixed on a pair of connecting plates (51) (51) orthogonal to the support plate (11), and prisms (5) are erected at the four corners, and the prisms (5) (5) adjacent to each other in front, rear, left and right are The upper ends are connected by a connecting plate (52). The first stage support base is provided between the front prisms (5) and (5) of the second stage support and across the rear prisms (5) and (5). And a horizontal adjustment screw (14) is screwed to both ends of each base plate (13). The support above the third stage has the same configuration as the support of the second stage. As shown in FIG. 6, the second-stage and third-stage supports are stacked on the first-stage support to constitute a multi-stacking device. FIG. 8 shows an embodiment in which the multi-stacking device is attached to the ceiling (8) via a hanging member (81). In carrying out the present invention, both ends of the support plates (11) and (11) of each stage may be connected and fixed by connecting rods (not shown), or by using a substantially rectangular support plate. Is also possible. Further, the left and right adjustment screw (41) of the left and right adjustment mechanism (4) is screwed on the support plate (11) with the mounting plate (2) interposed therebetween and is opposed to the left and right adjustment screw (41).
Place the tip of the mounting plate on the side of the plate (2) and use the two left and right adjustment screws.
(41) It is also possible to adjust the position of the mounting plate (2) right and left around the support portion (30) by tightening and loosening operations of (41).
The configuration does not matter as long as the mounting plate (2) is adjusted left and right by screw thrust. The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a multi-stacking device. FIG. 2 is a cross-sectional view of a support. FIG. 3 is a cross-sectional view of a mounted state of a tilt adjusting screw and a clamp screw. FIG. 4 is a cross-sectional view of a left-right adjustment mechanism. FIG. 5 is a perspective view of a first and second stage support bases according to another embodiment. FIG. 6 is a perspective view of the multi-stacking device using the support of FIG. 5; FIG. 7 is an explanatory diagram for a formula for calculating a lens shift amount. FIG. 8 is a side view of a ceiling hanging type multi-stacking device. [Description of Signs] (1) Support base (11) Support plate (2) Placement plate (3) Tilt adjustment mechanism (30) Support section (4) Left / right adjustment mechanism

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 21/00 H04N 5/74 F16M 11/00

Claims (1)

(57) [Claim 1] In a multi-stacking projection apparatus that mounts a plurality of liquid crystal projectors and superimposes the images of the respective liquid crystal projectors, a unitized plurality including a mounting plate on which the liquid crystal projector is mounted is provided. The projector support bases are stacked, and all the support bases or the remaining support bases except for one are connected with the tilting and horizontal adjustment mechanisms of the mounting plate, and the mounting plate is mounted on the support plate. The adjusting mechanism includes a tilt adjusting mechanism and a left and right adjusting mechanism. The tilt adjusting mechanism includes a supporting portion that rotatably and swingably supports a substantially central portion on one end side of the mounting plate, and a supporting portion on the other end side of the mounting plate. A clamp that is threaded through the mounting plate and screwed to the support plate in an imaginary triangle formed by two inclination adjustment screws that are screwed through on both sides and whose tips touch the support base, and that are formed by the support portion and the two inclination adjustment screws By screw The right and left adjustment mechanism is configured such that the support portion and the support portion are laterally screwed to the mounting plate or the support plate on the clamp screw side and the mounting plate is rotated by the screw thrust about the support portion, and the plate is rotated left and right. A multi-stacking projection device comprising an adjustment screw for performing positioning.