KR0134551B1 - Beam separation type projector - Google Patents

Abstract

The present invention relates to a projection angle adjusting device for a three-beam separation type projector, and is fixed to the inside of the upper surface of the housing while the left and right around the hinge point on the lower portion of the upper plate formed with a linear guide hole and a predetermined type of lifting guide hole at a predetermined position on the upper surface thereof. And a single upper barrel coupled by a cross link folded up and down, and having a fitting hole formed at a predetermined bottom surface; while being located on the bottom surface of the housing, a trajectory groove having a predetermined curvature is formed on the upper surface and is moved back and forth by the action of an external force. A pair of lower barrels configured to simultaneously move left and right; Ordinary driving means comprising a motor and a feeding screw; In the projection angle adjustment apparatus of the three-beam separation type projector consisting of a guide member for powering the upper barrel and the lower barrel while being moved back and forth in accordance with the application of external force in a state coupled to the bottom surface of the upper barrel and the upper surface of the lower barrel. The guide member has a pair of coupling pins protruding from the upper surface in a predetermined position and coupled with the upper barrel, and guide bars fitted into the fitting holes of the lower barrel are protruded from both sides of a predetermined position on the lower surface, and the transfer screw inside the body. Front and rear transfer guide plate formed to penetrate the insertion groove; The front and rear transfer guide plate is separated from each other, the guide projection is inserted into the lower cylindrical trajectory groove on both sides of the bottom of the front end, and consists of a left and right feed guide plate formed with a feed screw insertion groove of a predetermined depth inside the body, The conveying screw constituting the drive means forms the pitch of the tip end portion larger than the pitch of the rear end part, and forms the pitch in each of the feed screw insertion grooves formed in the guide plates accordingly, thereby constituting the three beam separation type projector. The barrel is adjusted so as to be simultaneously linked within a predetermined trajectory range so that the focusing and alignment of the screen projected on the screen through each barrel can be simultaneously performed.

Description

Projection Angle Adjuster of 3-beam Separation Projector

1 is an exploded perspective view showing the back of the projection angle adjustment device of a three-beam separation type projector according to the present invention.

2 is an exploded perspective view showing the operating state of the present invention from the back.

* Explanation of symbols for main parts of the drawings

12: track groove 14: lower barrel

16, 16 ': fitting hole 18: upper barrel

20: upper plate 22: straight guide

24: lift guide 26: cross link

32: drive means 34: guide member

40: front and rear transfer guide plate 44: left and right transfer guide plate

The present invention relates to a projection angle adjusting device of a three-beam separation type projector, and more particularly, by projecting the same projection on the same screen at the same time in a state in which the equilateral triangle is installed at a position spaced apart by a predetermined distance from the front of the screen Screen projected on the screen by allowing three projectors corresponding to R (Red), G (Green), and B (Blue) colors forming a stereoscopic image to be simultaneously adjusted in a defined trajectory range by the action of a single drive motor The present invention relates to an apparatus for adjusting the projection angle of a three-beam separation type projector that enables simultaneous focusing and screen registration operation.

In general, a three-beam split-type projector installs three barrels corresponding to R, G, and B colors at a certain distance from the front of the screen, and projects the same projected object on one screen through each barrel. This overlapping device allows the viewer to feel a three-dimensional effect. In such a three-beam separation type projector, when the distance between the screen and each barrel and the distance between the barrels do not match exactly, the screen projected through each barrel is screened. When the images overlap with each other, a phenomenon occurs that is different from each other, or the screen is not properly imaged on the screen, resulting in a disadvantage that the visibility on the observer side is lowered due to deterioration of image quality.

In order to exactly match the screen alignment and focusing in the three-beam separation type projector, it is inevitable to adjust the barrel. In the conventional case, the projection of the screen from each barrel to the screen does not coincide with each other. If the distance between each barrel is inappropriate and the focusing adjustment is not made properly, one or more barrels should be adjusted in the direction of correcting the mismatch with respect to the other relative barrel, but the projection direction and the projection angle should be adjusted. Not only was there a problem that it was cumbersome and inconvenient, but also had to make manual adjustments while watching the screen on the screen during the adjustment work, so there was a problem that accurate adjustment was impossible except for a professional engineer.

The present invention is to solve such a conventional problem, the object is to allow each barrel constituting the three-beam separation type projector to be adjusted while interlocking at the same time within a predetermined trajectory range screen projected on the screen through each barrel It is to provide a new type of projection angle adjusting device of a three-beam separation type projector that enables simultaneous focusing and screen alignment.

In order to achieve the above object, the present invention is fixed to the inside of the upper surface of the housing, and in the left and right and up and down directions centering on the hinge point in the lower portion of the upper plate formed with a linear guide hole and a predetermined type of lifting guide hole at the predetermined position A single upper barrel having a pair of fitting holes formed at a predetermined bottom surface thereof while being coupled by a folded cross link; A pair of lower barrels positioned on the bottom surface of the housing, each of which has a trajectory groove having a predetermined curvature determined by a calculation formula, and the front and rear and right and left linear movements are simultaneously performed by an external force; Ordinary driving means comprising a motor and a feeding screw; In the projection angle adjustment apparatus of the three-beam separation type projector consisting of a guide member for powering the upper barrel and the lower barrel while being moved back and forth in accordance with the application of external force in a state coupled to the bottom surface of the upper barrel and the upper surface of the lower barrel. The guide member has a pair of coupling pins protruding from the upper surface in a predetermined position, and a guide rod fitted into the lower barrel is protruded from both sides of a predetermined position on the lower surface, and a feed screw insertion groove is provided in the body. The front and rear feed guide plate formed to penetrate through and the front and rear feed guide plate are separated from each other, and guide protrusions are inserted into the lower cylindrical path grooves on both sides of the bottom surface of the tip, and a feed screw insertion groove having a predetermined depth is formed inside the body. Consisting of the left and right transfer guide plate, the conveying screw constituting the drive means has a rear end pitch Formed to be larger than the pitch, and the projection angle adjusting apparatus of each of the feeding screw 3 inserted beam division manner the projector hayeoseo the pitch formed accordingly in imhom formed in the respective guide plate is provided.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view showing the back of the projection angle adjusting device of the three-beam separation type projector according to the present invention, the projection lens 10 is mounted on the front and rear surfaces, respectively, each of the upper surface of the trajectory groove of a predetermined curvature determined by the calculation formula A pair of lower barrels (14) formed on the bottom surface of the housing is located side by side, and has the same shape as that of the lower barrels (14) above the center line vertically between the pair of lower barrels (14). Cross link 26 in which a single upper barrel 18 having a pair of fitting holes 16 formed at a predetermined position is fitted through a straight guide hole 22 and a lifting guide hole 24 formed on the upper plate 20. By this, the linear movement in the front and rear direction and the lifting movement in the vertical direction are coupled to each other, and the projection lens 10 is installed on the front and rear surfaces of the upper barrel 18. In addition, between the lower barrel 14 and the upper barrel 18 is linearly moved in the front-rear direction in response to the driving force in the state coupled with the conventional driving means 32 consisting of the motor 28 and the transfer screw 30. While providing a power to the front and rear and left and right movement of the lower barrel 14, the guide member 34 for providing power to the front and rear movement of the upper barrel 18 is installed.

Here, according to the present invention, while the guide member 34 is made of a T-shaped plate, a pair of coupling pins 36 fitted into the fitting hole 16 on the upper barrel 18 are protruded at an upper surface predetermined position thereof. Guide rods 36 'are inserted into the fitting holes 16' formed at predetermined positions on the inner side of the pair of lower barrels 14 from the bottom predetermined position to the left and right sides thereof, and the transfer screw 30 is located at the center of the body. The front and rear feed guide plate 40 is formed so that the feed screw insertion groove 38 through which the screw is inserted and the front and rear feed guide plate 40 are separated from each other, respectively. Guide protrusions 42 fitted into the track grooves 12 on the ridges are projected and the center portion of the body has a pitch of a predetermined depth having a pitch greater than the pitch in the feed screw insertion grooves 38 on the front and rear transfer guide plates 40. Left of the structure where the screw insertion groove 38 'is formed It comprises a transport guide plate 44.

Meanwhile, according to the present invention, the transfer screw 30 constituting the driving means 32 has a pitch of the front end portion which is inserted into and coupled to the feed screw insertion groove 38 ′ on the left and right transfer guide plate 44. It is configured so that the feed rate of the left and right transfer guide plate 44 is faster than the feed rate of the front and rear transfer guide plate 40 by a greater than the pitch of the rear end to be inserted into the feed screw insertion groove 38 on the (40). .

In addition, according to the present invention, the cross link 26 has a structure in which a pair of link pieces 46 and 46 'are cross-coupled so that they can be folded freely in the vertical direction and the left and right directions about the hinge point formed at the center thereof. Corresponding to such a structure, the upper barrel 18 has a coupling protrusion 48 which is coupled to the lower end of one link piece 46 constituting the cross link 26 at a front and back predetermined position on one side of the upper surface thereof. In the position parallel to the coupling protrusion 48, a guide groove 50 is formed to which the lower end of the other link piece 46 'is fitted.

In the configuration of the projection angle adjusting device of the three-beam split type projector according to the present invention, the motor 28 constituting the driving means 32 is electrically connected to a control switch on the control panel.

2 is a perspective view showing a coupling and operation state of the projection angle adjusting device of the three-beam split type projector according to the present invention from the rear, and intersects with the engaging projection 48 protruding at a predetermined position before and after the upper surface of the upper barrel 18. The lower end of the link piece 46 constituting the link 26 is fitted and fixedly coupled, and the lower end of the opposite link piece 46 'is inserted into the guide groove 50 formed in parallel with the engaging projection 48. The upper end of the one side link piece 46 is coupled to the elevating guide hole 24 on the upper plate 20 so that the upper end of the other link piece 46 'is movable to the linear guide hole 22 along its forming direction. do.

In addition, a pair of lower barrels 14 are positioned in the vertical direction of the upper barrel 18, and a motor constituting the driving means 32 is disposed between the bottom surface of the upper barrel 18 and the upper surface of the lower barrel 14. 28) and the guide screw 34, which is combined with the conveying screw 30, and formed by the front and rear conveying guide plate 40 and the right and left conveying guide plate 44, are fitted, the fitting hole of the bottom surface of the upper barrel 18 A coupling pin 36 of the upper surface of the front and rear transfer guide plate 40 is fitted into the end portion 16, and a fitting hole 16 ′ formed in the inner surface of each lower barrel 14 of the bottom surface of the front and rear transfer guide plate 40. The guide rod 36 'is fitted.

Next, the operation of the projection angle adjusting device of the three-beam split type projector according to the present invention having the above-described configuration will be described.

As shown in FIG. 2, when the user presses the control switch on the control panel in a predetermined direction to precisely overlap the screen of the projection formed on the screen, the guide member is driven while the motor 28 is driven in the predetermined direction. The front and rear feed guide plate 40 and the feed screw inserting grooves 38 and 38 'on the left and right feed guide plates 44 constituting the 34 are rotated in the same direction to guide members ( 34) The whole is linearly moved forward or backward.

At this time, the pair of lower barrels 14 coupled to the guide rods 36 'protruding from the bottom of the front and rear transfer guide plate 40 protrude from the left and right transfer guide plate 44 and the trajectory. By the action of the groove 12 is gathered toward the center line or open to the left and right, the upper barrel 18 is guided by the coupling member 36 on the front and rear transfer guide plate 40 and the guide member 34 In the united state along the linear guide hole 22 and the elevating guide hole 24 of the upper surface of the front and rear linear movement and at the same time up and down lifting movement.

For example, when the guide member 34 is linearly moved from the rear to the front by the action of the motor 28 and the feed screw 30, the lower barrel 14 is linearly moved forward, in which case the upper surface The lower barrel 14 is moved apart from each other by the action of the guide protrusion 42 on the left and right transfer guide plate 44 which is inserted into the trajectory groove 12 formed in the upper groove. As the barrel 18 is moved forward by a predetermined distance along the straight guide hole 22 on the upper plate 20 in a state in which the barrel 18 is coupled with the guide member 34, the barrel 12 is raised by the unfolding action of the cross link 26 to lower the barrel. It becomes the position away from (14).

On the contrary, when the guide member 34 is linearly moved from the front to the rear, the lower barrel 14 is collected along the trajectory groove 12 with respect to the reference line as opposed to the movement in the front, in which case the upper portion The barrel 18 is lowered by the folding action of the crosslink 26 while moving backward.

The left and right linear movement of the lower barrel 14 can be made without difficulty because the front and rear transfer speed of the left and right transfer guide plate 44 is faster than the transfer speed of the front and rear transfer guide plate 40 by a predetermined amount.

At this time, the projection angle adjustment of the lower barrel 14, 14 ′ and the upper barrel 18 is appropriately performed as the user controls the driving of the motor 28.

Therefore, according to the projection angle adjusting device of the three-beam split type projector according to the present invention, three barrels corresponding to R, G, and B colors are interlocked in left, right, front and rear directions through a guide member which is moved back and forth in a straight line. Since it is adjusted at the same time, there is an effect that the screen projected on the screen can be more accurately matched, and the operation is simple, so that even an expert can easily use it.

Claims (1)

It is fixedly installed on the inner side of the upper surface of the housing in the left and right and up and down directions about the hinge point at the lower part of the upper plate 20 in which the linear guide hole 22 and the predetermined elevation guide hole 24 are formed at a predetermined position on the upper surface thereof. A single upper barrel 18 coupled to the folded cross link 26 and having a pair of fitting holes 16 formed at a predetermined bottom surface thereof; A pair of lower barrels 14 which are positioned on the bottom surface of the housing and have a trajectory groove 12 having a predetermined curvature on each upper surface thereof, and the front and rear and right and left linear movements are simultaneously made by an external force; Ordinary driving means 32 composed of a motor 28 and a conveying screw 30; A guide member for applying power to the upper barrel 18 and the lower barrel 14 while being linearly moved back and forth according to the application of external force in a state coupled to the bottom surface of the upper barrel 18 and the upper surface of the lower barrel 14 ( In the projection angle adjusting device of the three-beam separation type projector consisting of 34), the guide member 34 is provided with a pair of coupling pins 36 for engaging with the upper barrel 18 at an upper surface predetermined position, Guide rods 36 ', which are inserted into the fitting holes 16' of the lower barrel 14, protrude from both sides of the predetermined position, and the front and rear feed guide plates are formed so that the feed screw insertion grooves 38 penetrate into the body. 40); The front and rear transfer guide plate 40 is separated from each other, the guide projections 42 are inserted into the track groove 12 on the lower barrel 14 on both sides of the bottom surface of the tip, and the feed screw of a predetermined depth in the body Consisting of the left and right transfer guide plate 44 is formed with the insertion groove 38 ', the transfer screw 30 constituting the drive means 32 forms the pitch of the front end portion larger than the pitch of the rear end, each of the guide plate Projection angle adjusting device for a three-beam separation type projector characterized in that the pitch in each of the transfer screw insertion grooves (38, 38 ') formed in (40) (44) is formed in accordance with the pitch of the tip of the transfer screw (30). .