KR100617626B1 - Apparatus for controlling an image direction for projection television - Google Patents

Abstract

Disclosed is a projection television screen direction control device capable of easily switching the screen orientation of a projection television with one of the one or more support pivots provided on the bottom of the main body as a rotation center. The apparatus for controlling the screen orientation of a projection television according to the present invention includes a lift controller installed inside both sides of a main body to vertically raise or lower the movable body. The supporting pivot protrudes downward from the bottom of the main body to one or more proximal positions of the plurality of movable bodies. When changing the screen direction of the projection television clockwise or counterclockwise, the elevating controller lowers one of the moving bodies and rotates one of the supporting pivots to the center of rotation. Due to this configuration, the screen orientation control apparatus of the projection television of the present invention selectively lowers the support pivots located on the left and right sides without effort, when switching the projection direction of the projection television clockwise or counterclockwise. You can change the screen orientation.

Projection TV, screen orientation, support pivot.

Description

Projection TV Screen Orientation Control {APPARATUS FOR CONTROLLING AN IMAGE DIRECTION FOR PROJECTION TELEVISION}

1 is an overall perspective view of a projection television according to a preferred embodiment of the present invention;

2 is a cross-sectional view taken along line A-A of Figure 1 showing a state in which the support member is in contact with the ground;

3 is a cross-sectional view taken along line A-A of Figure 1 showing a state that the support member is separated from the ground;

4 is a view showing a conversion direction of a projection television of the present invention; And

5 is a perspective view of a projection television according to the prior art.

Explanation of symbols on the main parts of the drawings

10: projection TV 12: main body

14: Primary operating groove 16: Secondary operating groove

18: elevator 20: moving object

22: axis of rotation 30: elevating control body

32: vertical movement bar 38: handle rotation axis

42: handle 50: support pivot

52: support rod 54: rotating support

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection television, and more particularly, to an apparatus for controlling a screen orientation of a projection television that can easily switch the screen orientation of the projection television by using one of the one or more support pivots provided on the bottom of the main body as the rotation center.

In general, a projection television is composed of a CHO (CATHODE-RAY TUBE) assembly for projecting an image beam, a reflector for reflecting the projected beam, a screen for forming an image with the reflected beam, and the like.

Such projection televisions usually have a large screen and are very bulky.

The apparatus for controlling the screen orientation of a conventional projection television is schematically described with reference to the accompanying FIG. 5. 5 shows an overall view of a projection television 110 according to the prior art. On the bottom of the main body 112 of the projection television 110, a plurality of moving bodies 120 are freely installed. The movable body 120 has a rotating shaft rotatably coupled to the bottom of the main body 112 (not shown), the support cap 124 firmly fixed to the lower end of the rotating shaft and curved downward, and the support cap 124 thereof. It is configured to include a wheel 126 rotatably coupled to the curved portion.

Due to this configuration, when it is necessary to change or move the direction of the screen of the projection television, the worker must hold both edges of the projection television with both hands to perform the turning and moving operations. In this process, the operator has to use both hands to reorient and move the heavy-weight projection television, which is very laborious, or because the turning radius of the wheel is greater than necessary, causing the projection television to hit the wall of the living room or the like. There was a problem that occurred.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide an apparatus for changing the screen direction of a projection television that can simplify the screen direction switching and moving operations.

In order to achieve the above objects, the present invention is directed to a screen orientation control apparatus for a projection television provided with moving bodies at four locations on the bottom of the main body,

Lifting control means installed on both sides of the main body to vertically raise or lower the movable body; And

It comprises a support rotating means protruding downward from the bottom of the main body to at least one adjacent position of the plurality of moving bodies,

When converting the screen direction of the projection television clockwise or counterclockwise, the lifting control means lowers one of the moving bodies and rotates one of the supporting rotating means to the rotation center. An aspect of the present invention provides a screen direction control device for a television.

In order to install the lifting control means, one side of the main body is formed in the main operation groove which is open toward the outer direction, the main operation groove and the upper side of the predetermined position is formed in the auxiliary operation groove, the auxiliary operation groove The lifting hole is formed vertically so as to be in communication with one side of the lower portion of the lifting hole is formed with a thread inclined in one direction, the lifting control means comprises a vertical movement bar, a handle rotating shaft and the handle, the vertical The moving bar is connected to the upper end of the movable body in the longitudinal direction and is operated by lifting up and down in the lifting hole of the main body, and the driven gear part and the helical gear part are formed on the outer circumferential surface of the vertical moving bar at a predetermined interval, and the helical gear part is It is screwed to the inclined threaded portion of the elevator, and the handle rotation axis is the ceiling of the auxiliary operating groove and the main Through the bottom of the donghom the vertical axis and rotatably coupled to, the handle is positioned in the interior of the primary operating grooves are possibly connected integrally rotate in a lower portion of the knob rotational axis.

The support pivot includes a support rod projecting downward on the bottom surface of the body and a rotation support hole rotatably bearing-contacted to the ground at the lower end of the support rod.

According to the projection screen switching apparatus of the projection television according to the present invention having such a feature, a plurality of moving bodies and a supporting rotating body are provided on the bottom surface of the main body of the projection television, respectively, at one or more adjacent positions of the moving bodies, An elevating control body for selectively lowering one or more moving bodies is installed inside. Due to this configuration, when switching the screen direction of the projection television clockwise or counterclockwise, the support pivots located on the left and right sides can be selectively lowered so that the screen orientation can be easily changed without great force. Can be.

The objects and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings.

1 shows a projection television 10 according to a preferred embodiment of the present invention. 2 and 3 are cross-sectional views taken along the line A-A of Figure 1, Figure 2 is a state in which the support pivot 50 is in contact with the ground, Figure 3 is a state in which the support pivot 50 is spaced apart from the ground Shows. 3 shows an example of the screen orientation conversion state of the projection television 10 of the present invention.

Referring to Fig. 1, screen orientation control devices are provided inside and at the bottom of the main body 12 of the projection television 10 according to the present invention. The screen direction control apparatus includes a plurality of movable bodies 20 and a supporting pivot 50 installed at one or more adjacent positions of the movable bodies 20, and the elevating controller 30 to be described later with reference to FIGS.

2 and 3, the moving body 20 is integrally coupled to the rotary shaft 22, the lower end of the rotary shaft 22, which is rotatably installed on the bottom of the main body 12, the bottom is curved support And a wheel 26 rotatably coupled to the curved portion of the cap 24 and its support cap 24. The support pivot 50 is a support rod 52 protruding downward on the bottom of the projection television 10 and a rotation support 54 rotatably bearing in contact with the ground at the lower end of the support rod 52. ).

An elevating control body 30 is further provided inside one side of the main body 12. In order to install the lifting control body 30, the main operating groove 14 is formed on the upper side of the main body 12. The auxiliary operation groove 16 is horizontally formed at the upper portion of the main operation groove 14 and the predetermined position. The lifting hole 18 is vertically formed so as to communicate with one side of the auxiliary operation groove 16. The lower portion of the lifting hole 18 is formed with a thread inclined in one direction.

The lifting control unit 30 is configured to include a vertical movement bar 32, the handle rotating shaft 38, 22 and the handle 42. The vertical movement bar 32 is connected to the upper end of the rotating shaft 22 in the longitudinal direction and is operated by lifting up and down into the lifting hole 18 of the main body 12. On the outer circumferential surface of the vertical movement bar 32, a longitudinal synchronizing portion 34 and a helical gear portion 36 are provided at the upper and lower portions, respectively. The helical gear portion 36 is screwed to the inclined threaded portion of the hoist 18. The handle rotating shaft 38 is rotatably coupled to the ceiling of the auxiliary operating groove 16 and the bottom of the main operating groove 14 vertically. The handle 42 is located inside the main operation groove 14 and is rotatably connected to the lower portion of the handle rotating shaft 38.

An apparatus for controlling a screen orientation of a projection television according to a preferred embodiment of the present invention having the above structure will be described with reference to the accompanying drawings.

Referring back to FIGS. 1, 2 and 3, in order to switch the screen orientation of the projection television 10, the operator once grasps the handle 42 that has been in contact with the bottom of the main operating groove 14 to move the outside. Pull towards you. Here, in order to rotate the screen direction of the projection television 10 clockwise, the handle 42 located on the right side of the projection television 10 is pulled out, while the screen direction of the projection television 10 is rotated counterclockwise. In order to rotate, the handle 42 located on the left side of the projection television 10 can be pulled out.

Here, an example of pulling the handle 42 located on the right side for convenience will be described. As described above, when the handle 42 is pulled out, the driving gear unit 40 is rotated together with the start of the rotation of the handle rotating shaft 38, and the driven gear unit 40 which is gear-coupled with the driving gear unit 40 ( 34) is rotated at the same time. At the same time, the vertical movement bar 32 in which the driven gear portion 34 is integrally rotated is operated, and the helical gear portion 36 formed at the lower portion of the vertical movement bar 32 is disposed at the lower portion of the lifting hole 18. As a result of the movement along the formed thread, the vertical movement bar 32 is lowered. Accordingly, the movable body 20 coupled to the lower portion of the vertical movable bar 32, more specifically, the wheel 26 of the movable body 20 is lowered toward the ground and the rotation support hole of the supporting pivot 50 54 is spaced from the ground to a predetermined position.

In this state, as shown in FIG. 4, the operator should just rotate the projection television 10 clockwise. At this time, the rotary support port 54 of the support pivot 50 located on the left front bottom surface of the projection television 10 is in contact with the ground. For this reason, when the projection television 10 is rotated in the clockwise direction as described above, the projection television 10 uses the rotation base 54 which is in contact with the ground as the center of rotation, and the wheels of the remaining three parts of the movable body 20. The 26 are slid in contact with the ground and easily rotated clockwise.

On the contrary, in order to fix the projection television 10 without moving, the support pivot 50 which has been lifted and spaced apart from the ground is lowered again to be brought into contact with the ground, and the movable body 20 of the portion is separated from the ground. . To this end, contrary to the above, the handle 42 may be rotated, and a detailed description thereof will be omitted.

As mentioned above, the apparatus for controlling the screen orientation of a projection television according to an embodiment of the present invention includes: installing a plurality of moving objects on the bottom of the body of the projection television, and a body bottom near one or more of the moving objects. By installing a support pivot on the support body and a lift control body for selectively lowering or elevating the support pivot, so that the feet positioned on the left and right sides when switching the screen direction of the projection television clockwise or counterclockwise By selectively lowering the rotating body, the screen orientation can be easily changed without incurring a large force. Also, the projection body can be prevented from being unnecessarily hit the wall of the living room, thereby preventing damage to the projection TV. Has

In the above, the present invention has been described in detail with reference to the above-described embodiments, but the present invention is not limited thereto, and those skilled in the art may change or improve the technology within the scope of ordinary knowledge.

Claims (3)

In the screen direction control apparatus of the projection television provided with the mobile body 20 in the four sides of the bottom face of the main body 12, Elevating control means installed in both sides of the main body 12 to vertically raise or lower the movable body 20; And It comprises a support rotating means protruding downward in the proximal position of one or more of the plurality of movable bodies 20 on the bottom of the main body 12, When changing the screen direction of the projection television 10 clockwise or counterclockwise, the lift control means lowers the movable body 20 of one of the movable bodies 20 and rotates one of the supporting pivot means. A screen orientation control apparatus for a projection television, which is rotated around the center. According to claim 1, In order to install the lifting control means, one side of the main body 12 is formed with a main operating groove 14 which is open in an outward direction, the main operating groove 14 and a predetermined position An auxiliary operation groove 16 is horizontally formed at an upper portion thereof, and a lifting hole 18 is vertically formed so as to communicate with one side of the auxiliary operation groove 16, and in a lower direction of the lifting hole 18. An inclined thread is formed, The lifting control means comprises a vertical movement bar 32, the handle rotating shaft 38 and the handle 42, the vertical movement bar 32 is connected to the upper end of the movable body 20 in the longitudinal direction main body It is fitted into the lifting hole 18 of the lifting hole 18, the outer circumferential surface of the vertical movement bar 32, the driven gear 34 and the helical gear 36 is formed spaced apart a predetermined interval, the helical gear Part 36 is screwed to the inclined threaded portion of the elevating hole 18, the handle rotating shaft 38 formed with a main gear portion 40 geared to the driven gear portion 34 is the It is axially rotatably coupled to the ceiling of the auxiliary operating groove 16 and the bottom of the main operating groove 14 vertically, the handle 42 is located inside the main operating groove 14 and the handle Programmable to be integrally rotatable to the lower portion of the rotary shaft 38, 22 Projection TVs orientation control device. The bearing pivoting body (50) of claim 1, wherein the bearing pivot (50) is rotatably bearing in contact with the ground at the lower end of the bearing rod (52) and the bearing rod (52) protruding downward on the bottom of the main body (12). Screen orientation control device for a projection television, characterized in that it comprises a combined rotary support (54).

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