KR102192329B1 - Advertisement projection device and system for providing advertisement including the same - Google Patents

Abstract

The present invention discloses an advertisement providing system. More specifically, the present invention relates to an image projection apparatus for performing outdoor advertisement by projecting a predetermined advertisement image on a road around a crosswalk in which a plurality of vehicles and pedestrians wait for a predetermined time, and an advertisement providing system including the same.
According to an embodiment of the present invention, there is an effect of maximizing the advertising effect by inducing the gaze and interest of a vehicle or pedestrian waiting for a signal change by projecting and displaying advertisement content on the ground by being installed on a post located adjacent to Hwangdan Walkway.

Description

An image projection device and an advertisement providing system including the same {ADVERTISEMENT PROJECTION DEVICE AND SYSTEM FOR PROVIDING ADVERTISEMENT INCLUDING THE SAME}

The present invention relates to an advertisement providing system, wherein a predetermined advertisement image is projected on a road around a crosswalk where a plurality of vehicles and pedestrians wait for a predetermined time to perform outdoor advertisement, and an advertisement providing system including the same About.

In general, traffic lights are installed at crosswalks so that pedestrians can safely cross the roadway through the crosswalk, and pedestrians wait for a certain period of time at the sidewalk adjacent to the crosswalk during the period when the traffic light is lit red, and then turn blue. The vehicle is also stopped at the crosswalk stop line according to the traffic lights, and then the operation resumes after waiting. In this case, most of the pedestrians and drivers waste time unintentionally.

Therefore, a method of exposing advertisements to pedestrians or drivers by installing advertisement means such as placards on the sidewalks adjacent to the pedestrian crossings to expose advertisements to drivers by pedestrians waiting at crosswalks has been developed. Although it has been used, it is difficult to manage, and the advertisement expression method to be delivered to the public is limited to pictures or text, and thus the advertisement effect is weak because it cannot attract the attention of pedestrians greatly.

Thus, recently, an advertisement image output device using a beam projector has been proposed, and an advertisement providing system has been proposed that transmits advertisements or advertisement phrases to pedestrians or drivers by investigating images containing various advertisements or public interest phrases on a crosswalk.

However, the same advertisement image output device using the commercially available beam projector is a standalone type that operates independently, and the beam irradiation direction is fixed or stays at the level of performing a simple reciprocating motion within a limited range. There is a limit in that the advertising effect is significantly lowered as an advertisement image is displayed in an area that is difficult for vehicles or pedestrians to see.

Unexamined Patent Publication No. 10-2019-0015158 (Publication date: 2019.02.13.)

The present invention was conceived to overcome the above-described problem, and the present invention is installed on a post located adjacent to a roadside yellow-deck sidewalk to project and display advertisement content in the form of a predetermined image or video on the surrounding ground, but the projection point There is a problem in providing an image projection device that induces the gaze and interest of a vehicle or pedestrian waiting for a signal change by varying, and an advertisement providing system including the same.

In addition, an object of the present invention is to provide an image projection device that enables them to focus on an advertisement image by detecting the positions of pedestrians approaching the periphery of the image projection device and changing a projection point, and an advertisement providing system including the same.

In addition, the present invention is an image projection apparatus for providing a high-quality advertisement image by adjusting the focal length and correcting the advertisement image according to the state of the ground and the separation distance on which the advertisement image is projected by the image projection device, and an advertisement providing system including the same There is a challenge to provide.

In order to solve the above-described problem, the image projection apparatus according to a preferred embodiment of the present invention is disposed at a certain height from the ground, and a clamping part rotatably coupled to the circumferential surface of the post, and the longitudinal direction is The main rail part arranged side by side and disposed on the side of the clamping part, the clamping part, and the main rail part are connected to each other, and the main body part on which the control circuit is mounted inside, and the auxiliary part are coupled to be movable left and right to the bottom of the main rail part It is coupled to the rail unit and one side of the auxiliary rail so as to be movable left and right, and may include a projector unit for projecting an advertisement image on the ground.

The control circuit includes a communication unit for transmitting and receiving data by connecting to a remote monitoring server through an information communication network, a control signal transmitted from the monitoring server, or a control signal of a sensor unit mounted on at least one of both ends of the auxiliary rail unit. , A control unit for driving a plurality of motor units to change a position at which the advertisement image is projected, and a storage for storing the advertisement image.

The clamping part includes an inner member to which a pad fixed in contact with the surface of the support is attached, and an outer member surrounding the inner member and rotatably coupled to an outer surface of the inner member, and the control circuit includes the outer member and It is mechanically coupled and may include a first motor unit for rotating the outer member clockwise or counterclockwise around the inner member.

The control circuit may include a second motor unit mounted inside the main rail unit and mechanically coupled to the auxiliary rail unit to move the auxiliary rail unit in the longitudinal direction of the main rail unit.

The control circuit may include a third motor unit mounted inside the auxiliary rail unit and mechanically coupled to the projector unit to move the projector unit in the longitudinal direction of the auxiliary rail unit.

The sensor unit further includes a coordinate correction unit configured to detect the position of one or more subjects existing on the ground, and the control circuit to calculate an estimated coordinate according to the gaze of the subject by referring to the library stored in the storage, the coordinates The correction unit is the following equation,

,

는, 영상 투사 장치가 설치된 위치를 기준점(0, 0)으로 하는 각 보행자의 현재 위치,

,

는 각 보행자의 시선에 대한 추정좌표, n은 센서부에 의해 감지된 보행자 수).Based on the estimated coordinates can be calculated (here,

,

Is, the current position of each pedestrian with the position where the image projection device is installed as the reference point (0, 0),

,

Is the estimated coordinate for each pedestrian's line of sight, n is the number of pedestrians detected by the sensor unit).

The projector unit includes an interface for receiving an advertisement image transmitted from the control circuit, an image reproducing unit for reproducing the advertisement image, and a light source, and projecting an advertisement image reproduced through light irradiated from the light source in a front direction. It may include a projection unit and a fan unit that reduces heat generated from the light source by circulating air therein.

The projector unit may further include a focus adjustment unit electrically connected to the control circuit and correcting a focal length of an advertisement image in response to a distance to the ground detected by the sensor unit calculated by the control circuit.

In order to solve the above problems, the advertisement providing system according to another aspect of the present invention is installed on a post located on the roadside of each area, and is disposed at a certain height from the ground to project an advertisement image on the ground. A plurality of image projection devices and a monitoring server that is connected to the plurality of image projection devices through an information communication network, and transmits an advertisement image and a control signal for controlling a direction in which the advertisement image is projected to the plurality of image projection devices. I can.

The monitoring server may receive a current driving state including information on surrounding conditions from the plurality of image projection devices in real time, and determine whether the image projection device is normally driven or abnormally driven.

The monitoring server may calculate the number of floating populations by time in each area according to the number of subjects and appearance times included in the surrounding situation information, and provide an advertisement effect by inferring the calculated number of floating populations.

According to an embodiment of the present invention, there is an effect of maximizing the advertising effect by inducing the gaze and interest of a vehicle or pedestrian waiting for a signal change by projecting and displaying advertisement content on the ground by being installed on a post located adjacent to Hwangdan Walkway.

In addition, according to an embodiment of the present invention, there is an effect of allowing pedestrians to focus more on an advertisement image by varying the projection point by detecting the positions of pedestrians approaching the surroundings through a sensor.

In addition, according to an embodiment of the present invention, it is possible to provide high-quality advertisement content by correcting the advertisement image and adjusting the focal length by determining the state of the ground on which the advertisement image is projected and calculating a separation distance.

1 is a diagram illustrating an installation and driving mode of an advertisement providing system including an image projection device according to an embodiment of the present invention.
2A to 2C are views each showing a perspective view, a front view, and a rear view of an image projection apparatus according to an embodiment of the present invention.
3 is a diagram of a control circuit mounted in an image projection apparatus according to an embodiment of the present invention.
4 is a diagram illustrating a projector unit of an image projection apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form may also include the plural form unless specifically stated in the phrase.

Unless otherwise defined, all terms used in the present specification may be used with meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

Hereinafter, embodiments of the present specification will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described herein to a specific embodiment, it should be understood to include various modifications, equivalents, and/or alternatives of the embodiments herein. . In connection with the description of the drawings, similar reference numerals may be used for similar elements. In the present specification, expressions such as "have," "may have," "include," or "may include" are the presence of corresponding features (eg, elements such as numbers, functions, actions, or parts). And does not exclude the presence of additional features.

In this specification, expressions such as "A or B," "at least one of A or/and B," or "one or more of A or/and B" may include all possible combinations of items listed together. . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes at least one A, including at least one B, or at least one A and It may refer to all cases including all of at least one B. Expressions such as "first," "second," "first," or "second," as used herein, can modify various elements regardless of order and/or importance, and one element It is used to distinguish it from other components and does not limit the components. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, without departing from the scope of the rights described in the present specification, a first component may be referred to as a second component, and similarly, a second component may be renamed to a first component.

Further, the various techniques described herein may be implemented with hardware or software, or, where appropriate, with a combination of both. As used herein, terms such as "...unit", "...server" and "...system" are likewise computer-related entities, i.e. hardware , It can be treated as a combination of hardware and software, software or equivalent to software at the time of execution. In addition, each function executed in the system of the present invention may be configured in a module unit, and may be recorded in one physical memory, or distributed between two or more memories and a recording medium.

Hereinafter, an image projection apparatus and an advertisement providing system including the same according to an embodiment of the present invention will be described with reference to the drawings.

1 is a diagram illustrating an installation and driving mode of an advertisement providing system including an image projection device according to an embodiment of the present invention.

Referring to FIG. 1, an advertisement providing system including an image projection apparatus according to an embodiment of the present invention may be installed on a post 1 of a traffic light installed adjacent to a crosswalk along a road.

Specifically, the advertisement providing system of the present invention is installed on a post located on the roadside of each area, and is disposed at a certain height from the ground to be implemented with one or more image projection devices 100 that project an advertisement image on the ground. I can.

The image projection device 100 is coupled to the post 1 installed with a traffic light on the side of the road at a certain height from the ground, and an advertisement in the form of a predetermined image, text, or video including the advertisement content on the ground around the road It is a device that implements content.

To this end, the image projection apparatus 100 may be composed of a predetermined lens, a display, a light source, and an image player, and to project the advertisement image on the ground by playing the stored advertisement image file under control of the mounted control circuit. do.

In particular, the image projection apparatus 100 according to an embodiment of the present invention is characterized in that the light projection point is not fixed in the initial installation state, but the light projection point is changed according to the setting. To this end, the image projection apparatus 100 is designed in a mechanical structure that allows changing the current arrangement of the projector unit that projects an advertisement image while being fixed to the post 1, and is equipped with a plurality of motors. It is installed in a structure that can rotate about 360° around the post (1) and move a certain distance in the left and right directions.

Accordingly, the light projection point A1 when the image projection apparatus 100 is initially installed can be freely changed to a direction A2 parallel to the road direction and a crosswalk direction A3.

A detailed description of the structure of the mechanism for changing the light projection point of the image projection apparatus 100 will be described later.

In addition, an advertisement providing system including an image projection device according to an embodiment of the present invention is connected to a plurality of image projection devices 100 through an information communication network, and an advertisement image and the advertisement are provided to the plurality of image projection devices 100. It may further include a monitoring server that transmits a control signal for controlling the direction in which the image is projected.

The monitoring server is connected to a plurality of image projection devices 100 in each region and periodically receives a status signal so that its manager can check in real time whether each image projection device 100 is operating normally or abnormally.

In particular, the monitoring server according to an embodiment of the present invention may further receive information on surrounding conditions detected by a sensor mounted in each image projection apparatus 100 and use it as statistical information. As an example, according to the number of subjects appearing in the vicinity of the image projection apparatus 100 detected by the sensor, that is, the number of pedestrians and their appearance time, the number of the floating population by time in each area is calculated, and the advertising effect in response to the calculated floating population Can be inferred. This advertisement effect is used to estimate the effect of the advertisement providing system of the present invention.

According to the above-described structure, the advertisement providing system including the image projection device according to the embodiment of the present invention provides an advertisement image with a variable projection point around a pedestrian crossing where vehicles and pedestrians wait for a period of time. You can focus the attention of vehicles and pedestrians.

Hereinafter, an external structure and a driving method of an image projection apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

2A to 2C are views each showing a perspective view, a front view, and a rear view of an image projection apparatus according to an embodiment of the present invention.

2A to 2C, an image projection apparatus 100 according to an embodiment of the present invention is disposed at a certain height from the ground, and a clamping part that is rotatably coupled to the circumferential surface of the post 1 ( 110), the main rail part 120, the clamping part 110 and the main rail part 120 disposed in the longitudinal direction parallel to the ground and disposed on the side of the coupling part, and the control circuit 200 inside The main body portion 130 is mounted, the auxiliary rail portion 140 coupled to be movable left and right to the bottom surface of the main rail portion 120 and the auxiliary rail portion 140 are coupled to be movable left and right on one side of the It may include a projector unit 400 to project an advertisement image.

The clamping unit 110 serves to fix the image projection device 100 on the post 1 adjacent to the crosswalk. The clamping part 110 may be formed in a'C' shape so as to be detachable from the post 1, and be installed at a position of a certain height or higher on the ground in a form surrounding the circumferential surface of the post 1 therein. I can.

The clamping unit 110 surrounds the pad 111 having elasticity so as to be in contact with the circumferential surface of the post, and the inner member 113 to which the pad 111 is attached to the inner surface, and the inner member 113 , It may be composed of an outer member 115 that is rotatably coupled to the outer surface of the inner member 113. Here, the inner member 113 is fixed by the pad 111, and the outer member 115 is 360° along the outer peripheral surface of the inner member 113 by the driving force transmitted from the first motor unit 240. It is designed to be able to rotate close to.

Of the openings of the inner member 113 and the outer member 115, at least one of the openings is further connected with a coupling member 117 for fixing the opening in the inward direction, so that the clamping part 110 falls or falls from the post 1 It keeps the bonded state so that it does not.

Accordingly, when the first motor unit 240 is driven, the entire image projection apparatus 100 except for the inner member 113 rotates in a clockwise or counterclockwise direction.

The main rail part 120 may be fixedly coupled by the body part 130 in the direction of one side of the clamping part 110. The main rail part 120 is formed in a straight bar shape with a predetermined length, is arranged parallel to the ground, and the side center is fixed to the body part 130, so that when the outer member 115 rotates, it rotates together in the same direction. Is done.

In addition, the main rail unit 120 has a rail 125 corresponding to the length of the main rail unit 120 is formed on the bottom surface, the auxiliary rail unit 140 is connected to be movable on the rail 125 In addition, as the second motor unit 250 is mounted inside and connected to the auxiliary rail unit 140, the auxiliary rail unit 140 is moved to the left on the rail 125 according to the driving of the second motor unit 250 ( It is configured to move in the L1) or right direction (R1).

The body portion 130 is positioned between the clamping portion 110 and the main rail portion 120 and serves to connect and fix the two components to each other. In addition, a control circuit 200 including various circuit elements and a substrate for controlling the driving of the image projection apparatus 100 is mounted in the internal space of the main body 130, and the first motor unit 240 is a clamping unit ( It is connected to the inner member 113 through the outer member 115 of 110), so that the outer member 115 is rotated when driven.

The auxiliary rail unit 140 is movable to the bottom of the main rail unit 120 and is coupled in a parallel direction. The auxiliary rail unit 140 is configured in a straight bar shape similar in appearance to the main rail unit 120.

In addition, the auxiliary rail unit 140 is coupled on the rail 125 formed on the bottom surface of the main rail unit 120 to be movable on the rail 125 by the driving force of the second motor unit 250. In addition, a rail 135 is formed on the side of the auxiliary rail unit 140, and as the projector unit 400 is disposed and connected on the rail 135, the projector from the side direction of the auxiliary rail unit 140 The unit 400 is movable in the left direction L2 and the right direction R2. The third motor unit 260 is mounted in the inner space of the auxiliary rail unit 140 and the projector unit 400 disposed on the side thereof is connected.

On the other hand, at least one sensor unit 300 may be further mounted on both sides of the auxiliary rail unit 140, which may detect an approaching vehicle or pedestrian by detecting the surrounding situation of the image projection device 100 , The detection result can be transmitted to the control circuit 200 and used to change the projection point of the image on the ground.

In addition, the number of pedestrians detected for a certain period of time may be transmitted to the above-described monitoring server and used to infer the advertising effect according to the number of floating populations in a corresponding area.

The projector unit 400 is disposed on the side of the auxiliary rail unit 140 and projects an advertisement image in a direction in which the lens faces, that is, in the ground direction. The projector unit 400 may be electrically connected to the control circuit 200 through a predetermined wiring mounted in the inner space of the main rail unit 120 and the auxiliary rail unit 140, and reproduces an advertisement image provided therefrom. Thus, an advertisement image can be implemented using a light projection method.

In addition, as the projector unit 400 is connected to be movable left and right on the auxiliary rail unit 140 by the third motor unit 260, the projector unit 400 can move to the left to the maximum ML point, and to the right. You can move up to the maximum MR point. A detailed description of the projector unit 400 will be described later.

According to the above-described structure, the rail unit that determines the maximum left and right movement point of the projector unit 400 that projects an advertisement image on the ground is implemented to be separated and moved in a double stacked structure, so that it is located on the post 1 of the road It has the advantage of securing the maximum possible range of image projection without compromising the aesthetics.

Hereinafter, a control circuit for controlling each component of an image tracking apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

3 is a diagram of a control circuit mounted in an image projection apparatus according to an embodiment of the present invention.

3, the control circuit 200 mounted in the image projection apparatus according to the embodiment of the present invention is a communication unit 210 for transmitting and receiving data by connecting to a monitoring server 600 at a remote location through an information communication network, a monitoring server. According to the control signal transmitted from the control signal or the control signal of the sensor unit 320 mounted on at least one of both ends of the auxiliary rail unit 140, the plurality of motor units 240 to 260 are driven to project an advertisement image. The control unit 220 for changing the position, the storage 230 for storing the advertisement image, the first motor unit 240 that is mechanically coupled to the outer member and rotates the outer member clockwise or counterclockwise around the inner member ), a second motor unit 250 mounted inside the main rail unit 120 and mechanically coupled with the auxiliary rail unit 140 to move the auxiliary rail unit 140 in the longitudinal direction of the main rail unit 120 ), a third motor unit 260 mounted inside the auxiliary rail unit 140 and mechanically coupled to the projector unit 400 to move the projector unit 400 in the longitudinal direction of the auxiliary rail unit 140 Can include.

The communication unit 210 may transmit and receive data by accessing the monitoring server 600 in a remote location through an information communication network. The monitoring server 600 may transmit a control signal for controlling the image projection device or an advertisement image file displayed on the ground, and receive various surrounding information detected by the sensor unit 300 from the image projection device, so that the manager Allows you to monitor whether the image projection device of the device is operating normally. In particular, the surrounding information collected from the image projection device of each region may be used to estimate the advertising effect in the future.

The controller 220 may control each component of the image projection apparatus. Such a control unit 220 may be implemented with a known MCU and controls each motor unit 240 to 260 according to a function programmed in a built-in ROM or a control signal transmitted from the monitoring server 600 to control the projector unit 400 You can change the light projection direction. In detail, the control unit 220 may rotate the main rail unit 120 and the auxiliary rail unit 140 connected thereto by 360° by controlling the first motor unit 240 connected to the clamping unit 110, and 2 By controlling the motor unit 250, the auxiliary rail unit 140 may be moved left and right on the main rail unit 120. In addition, the control unit 220 may control the third motor unit 260 to move left and right on the auxiliary rail unit 140.

In addition, the controller 220 may provide or change an advertisement image to be projected by transmitting an advertisement image stored in the storage 230 or an advertisement image transmitted from the monitoring server 600 to the projector unit 400.

The storage 230 may store an advertisement image file displayed by a corresponding image projection device. In addition, the storage 230 may store various set values referred to by the controller 220 for driving the image projection device.

The first motor unit 240 may be mounted on the main body, and transmits the driving force to the clamping unit 110 to rotate the image projection device including the main unit, and the second motor unit 250 uses the main driving force. It is transmitted to the rail unit 120 to change the position of the auxiliary rail unit 140 along the rail. In addition, the third motor unit 260 may transfer a driving force to the auxiliary rail unit 140 to change the position of the projector unit 400 along the rail, thereby moving a point on the ground on which the advertisement image is projected.

In addition, the image projection apparatus according to an embodiment of the present invention may further include a sensor unit 300 including at least one sensor capable of detecting a surrounding situation, and according to the detection result of the sensor unit 300 A coordinate correction unit 280 for correcting an image projection point of the projector unit 400 may be further included.

As an example, when a pedestrian approaches a crossing board on which an image projection device is installed, the coordinate correction unit 280 tracks the movement path of the pedestrian to estimate the direction the pedestrian is heading, and when the movement is stopped, the control unit 220 ) May correct the image projection point of the projector unit 400 by calculating coordinates of a point suitable for the pedestrian's gaze. In addition, when two or more pedestrians approach, the coordinate correction unit 280 can correct the image projection point of the projector unit 400 as the midpoint of the shortest path formed by the estimated two gazes of each pedestrian. have.

In order to implement such a function, the coordinate correction unit 280 of the present invention may consider information on the current coordinates of the pedestrian detected on the ground and the coordinates (Centroid X/Y) of the point where the pedestrian's gaze stays.

,

)으로 하여 해당 라이브러리에서 추출한 기준점에 따른 추정 좌표(

,

)를 이용하여 구하게 된다. 여기서, 라이브러리에 포함된 추정좌표는 각 영상 투사 장치가 설치된 위치에 기초한 좌표로서, 각 영상 투사 장치마다 서로 상이할 수 있고, 모든 영상 투사 장치에 적용되는 기준좌표는 아니다.The coordinates estimated as the coordinates of his gaze for such a pedestrian can be calculated by referring to a library previously stored in the storage 230, and the current location of the pedestrian is a reference point (

,

) And estimated coordinates according to the reference point extracted from the library (

,

) To obtain. Here, the estimated coordinates included in the library are coordinates based on a location where each image projection device is installed, and may be different for each image projection device, and are not reference coordinates applied to all image projection devices.

Accordingly, the estimated coordinates referring to the library can be calculated through Equation 1 below.

,

는 영상 투사 장치가 설치된 위치를 기준점(0, 0)으로 하여 각 보행자의 현재 위치에 대한 X 좌표 및 Y 좌표이며 기준좌표가 되고,

,

는 기준점을 중심으로 하는 추정좌표가 된다. n은 센서부에 의해 감지된 보행자의 수가 되고, 두 좌표의 거리를 계산함으로써 지면상의 광 투사 지점의 좌표를 구할 수 있다.here,

,

Is the X coordinate and Y coordinate for the current position of each pedestrian using the position where the image projection device is installed as the reference point (0, 0), and becomes the reference coordinate,

,

Is the estimated coordinate centered on the reference point. n is the number of pedestrians detected by the sensor unit, and the coordinates of the light projection point on the ground can be obtained by calculating the distance between the two coordinates.

Hereinafter, the structure of the projector unit of the image projection apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

4 is a diagram illustrating a projector unit of an image projection apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the projector unit 400 of the image projection apparatus according to an embodiment of the present invention includes an interface 410 for receiving an advertisement image transmitted from the control circuit 200, and an image reproducing unit for reproducing the advertisement image. 420, a projection unit 450 including a light source and projecting an advertisement image reproduced through light irradiated from the light source in the front direction, and a fan unit 460 and control that lowers heat generated from the light source by circulating internal air A focus adjustment unit 470 that is electrically connected to the circuit 200 and corrects the focal length of the advertisement image in response to the distance to the ground detected by the sensor unit calculated by the control circuit 200.

The interface 410 may include a known connector for wired connection between circuits, and may be connected to the control circuit 200 to receive an advertisement image file and a control signal for driving.

The video playback unit 420 may play the provided advertisement video file in the form of an image. Such an image reproducing unit 420 may mount a known decoder and reproduce the provided advertisement image file in real time.

The projection unit 450 may be composed of a known lens, a display device, and a light source, and an advertisement image is output to the outside through the lens by irradiating light to a display device on which an advertisement image is displayed and projecting it on the ground, thereby displaying advertisement content. Can be implemented.

The fan unit 460 circulates heat generated from the light source of the projection unit 450 to the outside, thereby lowering the internal temperature and allowing the projector unit 400 to be stably driven for a long time.

On the other hand, the projector unit 400 according to an embodiment of the present invention may further include a focus adjustment unit 470 for minimizing a phenomenon in which an advertisement image projected on the ground is displayed blurred because it is out of focus according to its position. .

The sensor unit mounted on the image projection apparatus of the present invention may further include not only a sensor for detecting the position of a pedestrian, but also an infrared sensor capable of detecting a distance between the ground and the projector unit 400, and the control circuit 200 May provide distance information between the ground and the projector unit 400 by the infrared sensor, and the focus adjustment unit 470 may control the focus of the lens of the projection unit 450 based on the provided distance information.

According to the above structure, the projector unit mounted in the image projection apparatus according to the embodiment of the present invention focuses the attention by projecting an advertisement image moving on the ground adjacent to the pedestrian crossing to a vehicle or pedestrian approaching under the control of the control circuit. To maximize the advertising effect.

One embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and is easily changed by a person of ordinary skill in the technical field to which the present invention pertains from the embodiment of the present invention. It may include all changes to the extent deemed acceptable.

1: post 100: image projection device
110: clamping part 120: main rail part
125: first transfer rail 130: main body
140: auxiliary rail part 145: second transfer rail
200: control circuit 210: communication unit
220: control unit 230: storage
240: first motor unit 250: second motor unit
260: third motor unit 280: coordinate generator
300: sensor unit 400: projector unit
410: interface 420: video playback unit
450: projection unit 460: fan unit
470: focus adjustment unit 600: monitoring server

Claims (11)

A clamping portion disposed on a predetermined height from the ground, rims and rotatably coupled to the circumferential surface of the post;
A main rail portion disposed in a longitudinal direction parallel to the ground and disposed on a side surface of the clamping portion;
A main body connecting the clamping part and the main rail part to each other, and having a control circuit mounted therein;
An auxiliary rail unit coupled to be movable left and right to the bottom of the main rail unit; And
It is coupled to one side of the auxiliary rail so as to be movable left and right, and includes a projector unit for projecting an advertisement image on the ground,
The control circuit,
A communication unit for transmitting and receiving data by accessing a monitoring server at a remote location through an information communication network;
A controller configured to change a position at which the advertisement image is projected by driving a plurality of motor units according to a control signal transmitted from the monitoring server or a control signal of a sensor unit mounted on at least one of both ends of the auxiliary rail unit; And
Storage in which the advertisement image is stored
Image projection device comprising a. delete The method of claim 1,
The clamping part includes an inner member to which a pad fixed by contacting the surface of the support is attached; And
It surrounds the inner member and includes an outer member rotatably coupled to an outer surface of the inner member,
The control circuit,
A first motor unit mechanically coupled to the outer member and rotating the outer member clockwise or counterclockwise around the inner member
Image projection device comprising a. The method of claim 3,
The control circuit,
A second motor unit mounted inside the main rail unit and mechanically coupled to the auxiliary rail unit to move the auxiliary rail unit in the longitudinal direction of the main rail unit
Image projection device comprising a. The method of claim 4,
The control circuit,
A third motor unit mounted inside the auxiliary rail unit and mechanically coupled to the projector unit to move the projector unit in the longitudinal direction of the auxiliary rail unit
Image projection device comprising a. The method of claim 1,
The sensor unit detects the position of one or more subjects existing on the ground,
The control circuit further includes a coordinate correction unit for calculating an estimated coordinate according to the line of sight of the subject by referring to the library stored in the storage,
The coordinate correction unit is the following equation,

An image projection device that calculates the estimated coordinates based on (however,

,

Is, the current position of each pedestrian with the position where the image projection device is installed as the reference point (0, 0),

,

Is the estimated coordinate for each pedestrian's line of sight, n is the number of pedestrians detected by the sensor unit). The method of claim 6,
The projector unit,
An interface for receiving an advertisement image transmitted from the control circuit;
An image reproducing unit to play the advertisement image;
A projection unit including a light source and projecting an advertisement image reproduced through light irradiated from the light source in a front direction; And
Fan unit that circulates air inside to reduce heat generated from the light source
Image projection device comprising a. The method of claim 7,
The projector unit,
A focus adjustment unit that is electrically connected to the control circuit and corrects the focal length of the advertisement image in response to the distance to the ground detected by the sensor unit calculated by the control circuit
An image projection apparatus further comprising a. A plurality of image projection devices installed on the posts located on the roadsides of each area and disposed at a predetermined height from the ground to project an advertisement image on the ground; And
A monitoring server that is connected to the plurality of image projection devices through an information communication network and transmits a control signal to the plurality of image projection devices to control an advertisement image and a direction in which the advertisement image is projected
Advertising providing system comprising a. The method of claim 9,
The monitoring server,
An advertisement providing system that receives a current driving state including surrounding situation information from the plurality of image projection devices in real time and determines whether the corresponding image projection device is normally driven or abnormally driven. The method of claim 10,
The monitoring server,
An advertisement providing system that calculates the number of floating populations by time in each area according to the number of subjects included in the surrounding situation information and the appearance time, and provides an advertisement effect by inferring the advertising effect in response to the calculated floating population.

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