KR102625680B1 - Lens Projector Rail System - Google Patents

Abstract

The present invention relates to a lens projector rail system, wherein the lens projector rail system includes a first screen for projecting an image, a projector for projecting an image on the first screen, and the projector is seated and moves forward and backward toward the first screen. The lens projector can be easily moved by including a cart that slides to the side, and instead of supplying power to the projector through external power, heavy batteries can be easily carried, eliminating the inconvenience of being free from cables to provide power. Because it is removed, convenience and safety are improved, and since the lens projector can be moved toward the screen, the lens projector can be adjusted by one person, which has the effect of reducing waste of manpower, reducing costs, and saving time.

Description

Lens Projector Rail System

The present invention relates to a lens projector rail system with adjustable distance for focus setting of a lens projector.

As the information age rapidly develops, the importance of display devices that implement large screens is emphasized.

In particular, an example of a device that implements a large screen is a projector that has the function of projecting and enlarging an image on a screen. These projectors are devices that implement images using light generated from a light source and project the realized images.

In order to provide a clear image, the projector must be accurately focused according to the distance between the projector's lens and the screen.

Products with autofocus are expensive, and most small projectors do not have autofocus. It is not easy for the average person to achieve accurate focus by rotating or moving the focus control unit left or right on a projector that does not have an autofocus function.

In particular, the distance and angle of the mobile projector from the screen changes whenever the position of the projector changes, and it requires a lot of time and manpower for the user to set the focal length one by one, resulting in high cost consumption.

Document 1: Republic of Korea Patent No. 10-1603670 Document 2: Republic of Korea Patent No. 10-1497674

The present invention relates to a lens projector rail system, which allows convenient focus setting of a lens projector while reducing costs.

The present invention relates to a lens projector rail system, which includes a first screen for projecting an image, a projector for projecting an image on the first screen, and a projector on which the projector is seated and projected forward toward the first screen. and a balance unit sliding rearwardly, and a reflection unit between the first screen and the projector to reflect the image projected from the projector toward the balance unit; and a second screen provided on the balance unit to receive the image reflected from the reflector and project it in the direction of the first screen.

In addition, the balance unit may include rail units on which the balance unit is slidably seated and provided parallel to each other toward the first screen.

delete

delete

Additionally, it may include a light source unit that projects light toward the first screen and is detachably provided on the second screen.

delete

As for the lens projector rail system of the present invention, it can exhibit the following effects.

First, according to the lens projector rail system of the present invention, it is possible to easily move the lens projector, and instead of supplying power to the projector through external power, it is possible to easily carry a heavy battery, so that it is possible to easily carry a heavy battery without a cable for providing power. Because it becomes free and eliminates inconvenience, convenience and safety are improved.

Second, according to the lens projector rail system of the present invention, the lens projector can be moved toward the screen and the lens projector can be adjusted by one person, thereby reducing waste of manpower, reducing costs, and saving time.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a diagram showing a first embodiment of a lens projector rail system according to the present invention.
FIG. 2 is a diagram showing the lens projector of FIG. 1 from the screen side.
Figures 3 and 4 are diagrams showing a state in which the lens projector rail of Figure 1 is moved.
Figures 5 and 6 are diagrams showing the operation of the lens projector rail system according to the present invention.
Figure 7 is a diagram showing a second embodiment of the lens projector rail system according to the present invention.
FIG. 8 is a cross-sectional view taken along the line “A-A’” in FIG. 7.
Figure 9 is a diagram showing a third embodiment of the lens projector rail system according to the present invention.
FIGS. 10 and 11 are diagrams showing an operating state from the side of the lens projector of FIG. 9.
FIG. 12 is a cross-sectional view taken along the line “B-B’” in FIG. 9.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and identical or similar components are given the same reference numerals throughout the specification.

In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, so the present invention is not necessarily limited to what is shown.

In the present invention, “on” means located above or below the target member, and does not necessarily mean located at the top based on the direction of gravity. In addition, throughout the specification, when a part "includes" a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

In addition, throughout the specification, when a part is said to be "connected" to another part, this means not only when it is "directly connected" but also when it is "indirectly connected" with another member in between. Also includes.

Figure 1 is a diagram showing a first embodiment of the lens projector rail system according to the present invention, Figure 2 is a diagram showing the lens projector of Figure 1 from the screen side, and Figures 3 and 4 are diagrams showing the lens projector rail of Figure 1. It is a diagram showing a moving state, and Figures 5 and 6 are diagrams showing the operation of the lens projector rail system in the present invention.

In addition, Figure 7 is a diagram showing a second embodiment of the lens projector rail system according to the present invention, Figure 8 is a cross-sectional view showing “A-A'” in Figure 7, and Figure 9 is a lens projector rail system according to the present invention. This is a diagram showing the third embodiment of the system, Figures 10 and 11 are diagrams showing the operating state from the side of the lens projector of Figure 9, and Figure 12 is a cross-sectional view taken along the line “B-B'” of Figure 9.

Hereinafter, a first embodiment of the lens projector rail system of the present invention will be described with reference to the attached drawings.

When explaining the lens projector rail system according to the present invention with reference to FIGS. 1 and 2, the lens projector rail system includes a first screen 10 for projecting an image, and a first screen 10 for projecting an image on the first screen 10. It includes a projector 20 and a carriage unit 30 on which the projector 20 is seated and slides forward and backward toward the first screen 10.

The projector 20 can project an image to the front first screen 10. The projector 20 operates by receiving power from the outside and can be seated on the cart 30.

The balance unit 30 can move forward and backward toward the first screen 10. The balance unit 30 is formed by stacking several storage units so that accessories of the projector 20 can be placed there. For example, the storage part of the cart 30 is equipped with a battery, cable, safety device, etc. that provide power to the projector 20, eliminating the need for a cable to provide power to the projector 20 from the outside, thereby improving safety and safety. This has the effect of improving convenience.

In addition, as shown in FIGS. 3 and 4, the lens projector rail system may include a rail portion 40 on which the balance portion 30 is seated and moves forward and backward from the first screen 10.

The rail portion 40 is slidably mounted on the balance portion 30 and may be provided parallel to each other toward the first screen 10 . The rail unit 40 may be a high-precision LM guide, and the bogie unit 30 may be seated on a block of the LM guide to slide along the rail. This rail portion 40 can move precisely and smoothly, and its length can be adjusted depending on the surrounding environment.

Additionally, according to the lens projector rail system according to the present invention, the balance unit 30 may be provided with a second screen 50 in correspondence with the first screen 10.

The second screen 50 can receive an image reflected from the reflector 70, which will be described later, on the cart 30, and project it in the direction of the first screen 10.

The second screen 50 is made of a material that allows magnets to be attached and detached, for example, iron, etc., and the light source unit 60 can be provided to be detachable from the second screen 50.

The light source unit 60 may be detachably provided on the second screen 50. The light source unit 60 may radiate light by receiving power from a battery or an external source. The light source unit 60 is made of a magnetic material and can be attached and detached from the second screen 50.

The light source unit 60 can be attached or detached from the top, bottom, or left and right sides of the second screen 50, providing convenience to the user.

Meanwhile, when an image is projected from the projector 20 to the first screen 10 to set the focus of the projector 20, a person viewing the first screen 10 and a person operating and setting the projector 20 This requires a lot of manpower.

Therefore, in the present invention, a reflection unit 70 may be included between the projector 20 and the first screen 10 to reflect the image projected by the projector 20 toward the balance unit 30.

The reflector 70 reflects the image projected from the projector 20 between the first screen 10 and the projector 20 toward the balance unit 30. According to this, when an image is projected from the projector 20 to the first screen 10, the reflector 70 can reflect some of the image projected from the projector 20 to the second screen 50.

The reflector 70 may include a support supported from the ground and a reflector connected to the support and rotating up, down, left and right about an axis. The support may be a tripod, and the reflector may be rotatably installed.

One side of the reflector of the reflector 70 may be rotatably fixed to the support, and the other side may be disposed to face the second screen 50 . The other surface of the reflector of the reflector 70 may be coated or attached with a material that can reflect the image projected from the projector 20 to the second screen 50. Here, a mirror is used as an example.

The other side of the reflector can be rotatably connected to the support, and the support can adjust the height between the reflector 70 and the cart 30 to transmit the image projected from the projector 20 to the second screen 50. It can be reflected.

The reflector 70 can be rotated up, down, left, and right between the support and the reflector, allowing the user to precisely set it. Accordingly, the user can move the balance unit 30 and focus while looking at the second screen 50, which has the effect of lowering costs by reducing manpower.

To explain the operation of this lens projector rail system, as shown in FIG. 5, the carriage unit 30 mounted on the rail unit 40 corresponding to the first screen 10 is provided to move forward and backward. When the projector 20 is placed on the cart 30, the first screen 10 and the projector 20 are arranged correspondingly.

As shown in Figure 6, when the projector 20 is operated to project a focus setting image, it is projected on the first screen 10. At this time, when the reflector 70 is placed between the first screen 10 and the cart 30, some of the focus setting images projected from the first screen 10 are reflected on the second screen (70). 50).

The second screen 50 projects the image reflected from the reflector 70 toward the first screen 10.

The user adjusts the balance unit 30 and the reflector 70 between the reflector 70 and the second screen 50 and sets the focus of the projector 20. At this time, the balance unit 30 can be fixed to the rail unit 40 with a pin to set the focus more precisely.

That is, the image projected from the projector 20 is reflected to the second screen 50 through the reflector 70, so that the user can see the second screen 50 between the first screen 10 and the second screen 50. ), the focus can be adjusted by looking at the distance, and when distance adjustment is necessary, the focus can be adjusted by moving the cart unit 30, thereby reducing manpower and adjustment time, which has the effect of greatly improving cost reduction, convenience, and convenience. .

Since the eye height of each user is different, the viewpoint from which the image projected on the first screen 10 or the second screen 50 is viewed may vary.

Therefore, the reflector 70 can be rotated up and down to reflect the image onto the second screen 50. However, according to this, the image may be projected as a curved or irregular image due to the height difference between the reflector 70 and the second screen 50. Therefore, the height of the bogie unit 30 must be adjusted.

7 to 8, the second embodiment of the lens projector rail system according to the present invention will be described, the balance unit 30 of the lens projector rail system includes several legs sliding on the rail unit 40, and the legs It includes a plate member 35 that interconnects the parts to seat accessories related to the projector 20, and a height adjustment means 110 including a knob 111 that adjusts the height of the leg portion.

The plate member 35 includes a first plate 35a, a second plate 35b, and a second plate sequentially provided from the second screen 50 toward the rail portion 40 to form receiving portions by interconnecting the leg portions. It may include 3 plates (35c). Each of these plate members 35 is provided with a receiving portion for seating accessories related to the projector 20.

For example, the projector 20 may be seated on the first plate 35a, and the battery that provides power to the projector 20 may be seated on the second plate 35b below the first plate 35a. The third plate 35c can accommodate cables, cases, etc. necessary for the operation of the projector 20.

The height adjustment means 110 may include a rod member 112 that is provided with a gear 1121 engaged with the knob 111 and slides the leg portion upward and downward from the rail portion 40 by the operation of the knob 111. You can.

Several leg portions correspond to the front first leg 31 and second legs (not shown) supported on the lower side of the second screen 50 and the rail portion 40 in correspondence with the front first leg 31 and the second leg (not shown). ) may include a third leg 33 and a fourth leg 34 provided on the rear side in the longitudinal direction. Here, for convenience of explanation, the third leg 33 is referred to as a leg portion and is described as an example.

The leg portion 33 may be formed with a rod receiving portion 33a in which the rod member 112 slides. The leg portion 33 may be penetrated from the rod receiving portion 33a to the outside of the leg portion 33 and a portion of the knob 111 may be inserted.

The knob 111 may have a thread formed on one side and be inserted into the rod receiving portion 33a, and may include a handle that the user can hold on the other side.

The rod member 112 is provided in the rod receiving portion 33a to slide in the longitudinal direction of the leg portion 33. The rod member 112 is engaged with the thread of the knob 111 and can be slid up and down by the operation of the knob 111.

These knobs 111 and rod members 112 are provided on each of the leg parts 33 so that the user can adjust each of the several leg parts. Therefore, by precisely adjusting the legs according to the terrain, the user can focus the projector 20 by viewing the image projected on the second screen 50 according to the user's eye level.

For example, when the knob 111 is turned to the right, the rod member 112 moves upward due to the engaged gear, allowing the height of the leg portion to be adjusted higher.

Also, on the contrary, when the knob 111 is turned to the left, the rod member 112 moves downward by the engaged gear, allowing the height of the leg portion to be adjusted lower.

Meanwhile, the knob 111 may be provided with a fixing pin (not shown) to prevent the leg portion from being set out after the knob 111 rotates. For example, the knob 111 is rotated to form an insertion protrusion into which the fixing pin is inserted in the leg portion 33, and a pin insertion hole through which the fixing pin passes is formed in the knob 111 to insert the fixing pin into the insertion protrusion and the pin insertion hole. It can be fixed by passing through it. In this regard, detailed description will be omitted as it is an already known technology.

When explaining the third embodiment of the lens projector rail system according to the present invention with reference to FIGS. 9 to 12, the height adjustment means 210 of the lens projector rail system adjusts the second screen according to the height of the leg portion 33. (50) is tilted forward and backward in the same direction as the bogie unit (30).

The height adjustment means 210 may include a connecting member 220, gear parts 212 and 213, wire parts 2111 and 2121, and an elastic member 223.

The connecting member 220 has a bar shape and can connect the second screen 50 and the first plate 35a. One side of the connecting member 220 may be slidably connected to the first plate 35a, and the other side may be rotatably connected to the second screen 50.

The connecting member 220 can be operated by gear parts 212 and 213 by connecting wire parts 2111 and 2121, which will be described later, to one side and the other side, respectively.

The gear units 212 and 213 may include a first gear 212 and a second gear 213 that are connected to the knob 211 and are operated in opposite directions by operation of the knob 211.

The first gear 212 and the second gear 213 are rack-and-pinion gears and engage the threads of the knob 211. The first gear 212 and the second gear 213 can pull or release the wire portions 2111 and 2121 by operating the knob 211.

The first gear 212 and the second gear 213 may be connected to wire portions 2111 and 2121.

The wire portions 2111 and 2121 include a first wire 2111 connecting the first gear 212 and the connecting member 220, and a connecting member 220 connected to the second gear 213 and the second screen 50. ) may include a second wire 2121 connected to ).

One side of the first wire 2111 may be connected to the first gear 212, and the other side may be connected to one side 221 of the connector member. The force resulting from the operation of the first gear 212 can be transmitted to one side 221 of the connector member.

One side of the second wire 2121 may be connected to the second gear 213, and the other side may be connected to the other side 222 of the connector member. The force resulting from the operation of the second gear 213 can be transmitted to the other side 222 of the connector member.

A roller 214 supporting the wire parts 2111 and 2121 may be included between one side and the other side of the wire parts 2111 and 2121.

The roller 214 may support the wire portions 2111 and 2121 at a curved portion between one side and the other side of the wire portions 2111 and 2121. The roller 2140 rotates around the axis and supports the wire portions 2111 and 2121.

Meanwhile, an elastic member 223 may be connected to one side 221 of the connector member and the other side of the first wire 2111.

The elastic member 223 may elastically support the first wire 2111 and the connecting member 220. The elastic member 223 is provided on the first plate 35a in close proximity to the second screen 50, so that one side is fixed to the first plate 35a, and the other side is connected to the other side of the first wire 2111 and a connection member ( One side 221 of 220) can be connected together to increase rigidity.

This elastic member 223 expands and contracts as the length of the first wire 2111 is adjusted by the operation of the knob 211, and can support the first wire 2111 and the connecting member 220.

Accordingly, when the height of the balance unit 30 needs to be increased by the height adjustment means 210, that is, the height of the balance unit 30 needs to be adjusted according to the height of the user or the height of the ground at the site. At this time, when the knob 211 is operated to rotate to the right, the first gear 212 moves down and force is transmitted to the first wire 2111, thereby transmitting tension in the direction of the first gear 212. The first wire 2111 transmits force to one side 221 of the connector member and the other side of the elastic member 223.

At this time, the second gear 213 moves up in the opposite direction of the first gear 212, and as the tension in the second wire 2121 weakens, the force transmitted to the other side 222 of the connector member becomes weak, so that one side of the connector member It rotates around the hinge (H) to the rear side by (221).

In addition, if you want to lower the height, if you rotate the knob 211 in the opposite direction in the above description, each of the gear parts 212 and 213 and the wire parts 2111 and 2121 will operate in opposite directions, and the first wire 2111 will The tension caused by the elastic member 223 causes the second screen 50 to rotate toward the front.

According to this, the height of the balance unit 30 is adjusted according to the height of the user, and the second screen 50 is tilted forward and backward depending on the height of the balance unit 30, so that it is possible to adjust to the user's eye level, improving convenience and convenience. It can be improved.

According to the lens projector rail system of the present invention, the lens projector can be easily moved, and instead of supplying power to the projector through external power, a heavy battery can be easily carried, freeing it from cables for providing power. Convenience and safety are improved because the inconvenience is eliminated, and the lens projector can be moved toward the screen, allowing the lens projector to be adjusted by one person, which has the effect of reducing waste of manpower, reducing costs, and saving time.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

For example, each component described as single may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the patent claims described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited thereto, and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the accompanying drawings, and this is also the present invention. It is natural that it falls within the scope of .

10: first screen
20: projector
30: balance sheet
40: Rail part
50: second screen
60: Light source unit
70: reflection part

Claims (5)

A first screen that projects an image;
a projector that projects an image onto the first screen;
a carriage on which the projector is seated and slides forward and backward toward the first screen;
a reflection unit between the first screen and the projector that reflects the image projected from the projector toward the balance unit; and
A lens projector rail system comprising: a second screen provided on the balance unit to receive the image reflected from the reflector and project it in the direction of the first screen. According to paragraph 1,
A lens projector rail system including a rail portion on which the balance portion is slidably mounted and provided parallel to each other toward the first screen.
delete delete According to paragraph 1,
A lens projector rail system comprising: a light source unit that projects light toward the first screen and is detachably provided on the second screen.