KR20200089188A - Image and voice broadcasting system for preventing crime - Google Patents

Abstract

The present invention relates to an image projection and voice guidance system for crime prevention, capable of projecting a luminescent image only in case of necessity by projecting a luminescent image on the ground if a moving object is sensed such that a crime prevention effect can be increased, power consumption can be reduced, and the luminescent image can be easily and variably applied if necessary, which comprises: an image projection means including a body tube having a hollow inner part and having both opened tip ends of a longitudinal direction, an LED module coupled to an inner side in the direction of one end of the body tube to emit light into the body tube, a projection lens coupled to an inner side in the direction of the other end of the body tube to refract light emitted by the LED module, and an image glass provided between the LED module and the projection lens to transmit the light emitted by the LED module; a moving object sensing means provided to sense an object which moves; a control unit determining the moving object based on information input from the moving object sensing means and if the moving object is determined to be sensed, driving the image projection means to project the luminescent image on the ground; and a speaker unit receiving a control signal from the control unit to output a voice.

Description

Image and voice broadcasting system for preventing crime}

The present invention relates to an image projection and voice guidance system for crime prevention, and more specifically, by projecting a luminous image on the ground when a moving object is detected, it is possible to project the luminous image only when necessary, thereby increasing the crime prevention effect. The present invention relates to an image projection and voice guidance system for crime prevention, which can reduce power consumption while making it easy to variably apply a luminous image when necessary.

With the diversification of living conditions, living environments deteriorate, and accordingly, anti-social crime rates for vulnerable groups such as abduction of women, children, or the elderly are increasing every year. In addition, although the citizens' spirit of compliance is increasing, misdemeanor crimes such as dumping garbage and urination on the street are still being carried out in everyday life.

Accordingly, citizens' consciousness is transmitted through posters, flyers, banners, etc., but such installations have a remarkable decrease in persistence due to damage, etc., and do not induce actors with a desire for crime to have a special awareness.

Accordingly, recently, attempts to prevent crime by using the crime prevention through environmental design (CPTED) technique have been continuously increasing. Septed is a technique that prevents crime and reassures residents by making changes through environmental design in places that are vulnerable to crime. Among the various methods of using the Septed method, especially, it can be seen at great cost at low cost. Cases of applying image projection equipment are widely applied to police or government offices nationwide.

However, most of these image projection equipments simply project images continuously and there is a problem that cannot maximize the effect of septide, and also wastes power by continuously emitting light even in a pedestrian-free environment at night. This is true.

Therefore, it is necessary to develop a system that reduces power consumption by emitting light only when necessary, and that actors with criminal desires are monitored to lose the criminal desires by exposing information.

KR10-0947646 (Registration No.) 2010.03.08.

The present invention provides an image projection and voice guidance system for crime prevention that can reduce power consumption while increasing the crime prevention effect by projecting a light-emitting image to the ground when a moving object is detected, thereby increasing the crime prevention effect. The purpose is to provide.

In addition, the present invention is configured such that the first and second cylinders are separable, and when detaching the second cylinder, the image glass can be detached and exchanged inside the first cylinder. The purpose is to provide an image projection and voice guidance system for crime prevention.

In addition, the present invention is to provide an image projection and voice guidance system for crime prevention that can change the projection position of the luminescent image and maintain the focus of the luminescent image clearly when the projection position of the luminescent image is variable. have.

In addition, since the present invention can continuously track and project the luminescent image in front of the moving object, and can continuously track and project the luminous image in front of the trailing moving object among two or more moving objects, a crime that can reduce the desire for crime The aim is to provide an image projection and audio guidance system for prevention.

The present invention, the inner hollow and both ends in the longitudinal direction of the open barrel, the LED module that is coupled to the inside of the other end of the barrel to emit light into the inside of the barrel, and is coupled to the inside of one end of the barrel Image projection means including a projection lens for refracting the light emitted from the LED module, and an image glass provided between the LED module and the projection lens to transmit light emitted from the LED module; Moving object detection means provided to detect a moving object; A control unit for determining a moving object based on information input from the moving object detecting means, and when the moving object is determined to be detected, driving the image projection means to project a light-emitting image on the ground; It includes; a speaker unit that receives a control signal from the control unit and emits sound.

In addition, the barrel of the present invention, the first barrel to which the LED module is coupled; A second barrel that is coupled in a detachable form to one end of the first barrel, and wherein the projection lens is coupled inside; And a glass holder provided inside one end of the first barrel to insert the image glass detachably.

In addition, the present invention, the first rotation module including a first motor having a rotation axis extending in a first direction, and a first arm coupled to the rotation axis of the first motor and rotated according to the rotation of the first motor; A second motor having a rotation axis extending in a second direction intersecting the first direction, and a second arm coupled to the rotation axis of the second motor and rotated according to the rotation of the second motor, wherein the image projection means is fixed A second rotation module comprising a; It includes; the first rotating module is coupled, the fixing bracket is provided to be fixed to the column or wall; includes a variable angle of irradiation means.

In addition, the present invention, an actuator coupled to the inner periphery of the tube; A focus adjustment block that moves forward or backward in the longitudinal direction according to the driving of the actuator; A focus adjustment module including a focus adjustment lens coupled to the focus adjustment block to refract light passing through the image glass and transmitting the light to the projection lens, wherein the control unit includes the control unit of the variable irradiation angle means. The driving of the actuator is controlled in response to the driving amount of one motor or the second motor.

In addition, the moving object detecting means of the present invention is composed of a low-illumination camera or an infrared camera, and the control unit compares an image shot from the moving object detecting unit for each set frame to obtain a difference image, and from the contour of the obtained difference image The moving object is specified, and the irradiation angle variable means is driven so that the light of the image projecting means can be projected in front of a specified moving direction setting distance.

According to the present invention, when a moving object is sensed, the light-emitting image is projected on the ground, so that the light-emitting image can be projected only when necessary, thereby increasing the crime prevention effect while reducing power consumption.

In addition, the present invention is configured such that the first and second cylinders are separable, and when detaching the second cylinder, the image glass can be detached and exchanged inside the first cylinder. There is an effect that can be done.

In addition, the present invention has an effect capable of changing the projection position of the light-emitting image by providing a means for varying the irradiation angle.

In addition, the present invention is provided with a focus adjustment module, there is an effect that can clearly maintain the focus of the light-emitting image when the projection position of the light-emitting image is variable.

In addition, the present invention has an effect that the moving object detection means is composed of a camera, identifies the moving object from the difference image of the captured image, and can continuously track and project the luminous image in front of the specified moving object.

In addition, the present invention has an effect capable of reducing the desire for crime, because it can continuously project and project a luminous image in front of a trailing moving object among two or more moving objects.

In addition, since the present invention is capable of rotational driving of the image glass, a figure or character of the luminescent image can be positioned in the forward direction of the moving object, thereby improving readability.

1 is a perspective view of an image projection and voice guidance system for crime prevention according to an embodiment of the present invention.
2 is a side cross-sectional view of an image projection and voice guidance system for crime prevention according to an embodiment of the present invention.
3 is a plan view of an image projection and voice guidance system for crime prevention according to an embodiment of the present invention.
4 is a cross-sectional view of an image projection means of an image projection and voice guidance system for crime prevention according to an embodiment of the present invention.
Figure 5 is an exemplary use of an image projection and voice guidance system for crime prevention according to an embodiment of the present invention.
Figure 6 is another exemplary use of the image projection and voice guidance system for crime prevention 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.

The present invention is based on information input from the image projection means (100) for projecting a luminous image onto the ground, a moving object detection means (400) provided to detect a moving object, and a moving object detection means (400). When determining that the moving object is detected, it comprises a control unit for driving the image projection means 100 to project the luminous image on the ground, and a speaker unit 300 that receives a control signal from the control unit and emits sound. do.

The image projection means 100 serves to project a light-emitting image on the ground when a driving signal is input from the control unit. For this purpose, the inside of the tube 110 is hollow, and both ends of the longitudinal tube 110 and the tube 110 are opened. The LED module 120 coupled to the inside of the other end direction to emit light into the interior of the barrel 110, and the LED module 120 coupled to the inside of one end of the barrel 110 to refract the emitted light ( 130, and is provided between the LED module 120 and the projection lens 130 is configured to include an image glass 140 through which light emitted from the LED module 120 passes.

The barrel 110 is formed in a cylindrical or polygonal cylindrical shape, and has a hollow portion formed therein and both ends in the longitudinal direction open. The barrel 110 provides a mounting space for the LED module 120, the projection lens 130, and the image glass 140 to be mounted, and the second arm of the variable illumination angle 200 on one side of the outer periphery ( 222) are combined.

The LED module 120 is coupled to the other end of the tube 110. The combination of the LED module 120 and the barrel 110 is made in a detachable form for maintenance in the event of a failure of the LED module 120. At this time, a plurality of angles of the light emitted from the LED module 120 are not changed. At the point of is preferably coupled with a bolt or screw. In addition, it is preferable that a sealing member (not shown) is further provided so that rainwater, moisture, and the like do not penetrate at the point of contact between the other end of the barrel 110 and the LED module 120.

The projection lens 130 is coupled to one end of the tube 110. Since the projection lens 130 is formed in the same shape as the omnidirectional with respect to the center point, the rotational coupling method can be applied to the barrel 110 and the projection lens 130. To this end, a thread is formed on the inner periphery of one end of the barrel 110 so that the projection lens 130 can be coupled.

The interior of the barrel 110, between the projection lens 130 and the LED module 120 is provided with an image glass 140 through which light emitted from the LED module 120 is transmitted. To this end, a glass holder 141 for fixing the image glass 140 is provided inside the barrel 110, and the image glass 140 should be configured to be replaced in order to represent other images. To this end, the glass holder 141 should be able to fix the image glass 140 in a removable form, and the barrel 110 is also preferably configured as a detachable type so that the image glass 140 can be detached. By doing this, the barrel 110 is coupled in a detachable form to one end of the first barrel 111 and the first barrel 111 to which the LED module 120 is coupled, but the projection lens 130 inside one end thereof ) Is composed of a second barrel 112 that is coupled, and a glass holder 141 is provided inside one direction of the first barrel 111. The second barrel 112 is coupled to the first barrel 111 in a rotationally coupled manner, for this purpose the inner periphery of the first barrel 111 and the outer periphery of the second barrel 112 or the first barrel 111 A thread is formed on the outer periphery of the and the inner periphery of the second barrel 112.

On the other hand, the inside of the second barrel 112, the focus control module 150 is coupled to refract the light transmitted through the image glass 140 to change the focal length of the projected emission image. The focus adjustment module 150 includes an actuator 153 that is coupled to the inner periphery of the second barrel 112 and a focus adjustment block that moves forward or backward in the longitudinal direction of the barrel 110 according to the driving of the actuator 153 ( 152 and a focus adjustment lens 151 coupled to the focus adjustment block 152 to refract light passing through the image glass 140 and transmit it to the projection lens 130. Therefore, when the light transmitted through the image glass 140 reaches the projection lens 130 through the focus adjustment lens 151, the position of the focus adjustment lens 151 moves along the longitudinal direction of the barrel 110. As a result, the incident angle of light reaching the projection lens 130 is varied, so that the focal length of the luminous image projected on the ground is variable. The variable focus adjustment configuration of the focus adjustment module 150 is determined by the control unit according to the rotation amount of the variable irradiation angle 200.

The LED module 120 serves to emit light into the interior of the barrel 110, and is coupled to the other end of the barrel 110 for this purpose. The LED module 120 is a form in which a plurality of LEDs are arranged and mounted on a substrate, and is preferably a COB (Chip On Board) form, but is not limited thereto.

The LED module 120 generates heat when emitting light. In order to solve this, the heat sink 121 is further provided on the other end of the LED module 120. The heat sink 121 has a plurality of heat sink fins protruding, and the heat sink fins are exposed to the outside of the other end of the barrel 110.

The projection lens 130 serves to project light onto the ground by refracting the light transmitted through the image glass 140, and for this purpose, it is provided to be coupled to the inside of one end of the tube 110. The projection lens 130 may be rotationally coupled to one end of the barrel 110, and for this purpose, threads may be formed on the outer circumference of the projection lens 130 and the inner circumference of one end of the barrel 110.

The projection lens 130 may be a 3-beam projection lens of a general beam projector, but is not limited thereto, and may be selected and utilized from various known projection-type lenses.

The image glass 140 serves to allow light emitted from the LED module 120 to be transmitted and to generate a luminous image expressing figures or characters, and for this purpose, a projection lens 130 inside the barrel 110 ) And the LED module 120. Preferably, the image glass 140 is provided inside one end of the first barrel 111, and is detachably fixed to the glass holder 141 coupled to the inside of one end of the first barrel 111.

The image glass 140 is a shape in which a figure or a letter is printed on a transparent plate such as glass or acrylic. As the light emitted from the LED module 120 is transmitted, some spectra are absorbed depending on the shape or the shape of the letter and some spectra. By passing through, it is configured so that figures or characters can be displayed when light reaches the ground as a result.

The image glass 140 is preferably configured such that a figure or character faces in the forward direction when a light emitting image is generated in front of a moving object, that is, a person. In other words, when a luminous image is projected and generated in front of a moving object, it should be a form that can be read immediately, not a figure or a character that is inverted. Therefore, the image glass 140 should be provided in a rotatable form, and for this purpose, it is fixed to a glass holder 141 rotatably provided inside the barrel 110.

The glass holder 141 is configured to be able to rotate the centerline of the barrel 110 as an imaginary axis of rotation. To this end, a plurality of rotating teeth 142 supporting the glass holder 141 is coupled to the inner periphery of the first barrel 111, and the outer peripheral edge of the glass holder 141 has teeth to be engaged with the rotating teeth 142. Is formed. That is, the glass holder 141 is spaced apart from the inner periphery of the first barrel 111 while the outer periphery is supported by the rotating teeth 142, and becomes a form that can rotate along the inner periphery of the first barrel 111, At this time, the image rotation motor 143, which is formed with teeth on the rotating shaft so as to mesh with the teeth formed on the outer periphery of the glass holder 141 so as to rotate the glass holder 141, is coupled to the inner periphery of the first barrel 111. It is provided. Accordingly, when the image rotation motor 143 is rotated under the control of the control unit, the glass holder 141 is rotated, and accordingly, the image glass 140 is rotated to change the direction of the figure or character of the image projected on the ground. .

The above-described image projection means 100 is configured to be coupled to the variable irradiation angle means 200 so that the projection position of the light-emitting image can be varied.

To this end, the irradiation angle variable means 200 is coupled to a rotation axis of the first motor 211 and the first motor 211 having a rotation axis extending in the first direction and rotates according to the rotation of the first motor 211 The first rotation module 210 including the first arm 212 and the second motor 221 having a rotation axis extending in a second direction intersecting the first direction, coupled to the rotation axis of the second motor 221 It is rotated according to the rotation of the second motor 221, the second rotation module 220 including the second arm 222 to which the image projection means 100 is fixed, and the first rotation module 210 is coupled, It is configured to include a fixing bracket 230 which is fixedly provided on a pillar 10 such as a column or a wall.

The variable irradiation angle 200, for example, when dividing the ground on which the light emission image is projected around the pillar 10 on which the system of the present invention is installed, is divided into coordinates of the x-axis and the y-axis, the first rotation module 210 ) Rotates the image projection means 100 in the x-axis direction, and the second rotation module 220 rotates the image projection means 100 in the y-axis direction.

Further, the fixing bracket 230 may be configured in a plate shape or a rod shape, but is formed in a box shape as illustrated in the drawing so that the first motor 211 of the first rotation module 210 is fixed therein. It may also be configured to be installed inside the power supply 500. The power supply 500 serves to convert AC power into DC power so that the LED module 120 or the first motor 211, the second motor 221, and the speaker can utilize it, and SMPS (Switching mode) power supply).

Each of the first motor 211 and the second motor 221 of the variable irradiation angle 200 may be provided with an encoder device to measure the rotation amount of the first motor 211 and the second motor 221. Alternatively, when the first motor 211 and the second motor 221 are configured as a step motor, the rotation amount can be measured without an encoder device, and thus the encoder device may be excluded.

The moving object detecting means 400 is fixed to the holding 10 so as to detect a moving object moving around the holding 10, and transmits the sensed information to the control unit.

The moving object detecting means 400 may be basically composed of an infrared sensor. In this case, the image projection means 100 is configured to project a light-emitting image around the pillar 10 as a form fixed to the pillar 10.

In this case, there is an effect of causing an actor expecting a crime to abandon the criminal act because of the feeling of being monitored, but in the present invention, the crime is expected by further tracking and projecting a luminous image in front of the actor or the general pedestrian who expects the crime A configuration that can further enhance the effectiveness of the invention is added by giving the feeling of being tracked to the actor to be protected and the feeling of being protected to the general pedestrian.

To this end, the moving object detecting means 400 is composed of a camera. Preferably, the moving object detecting means 400 is composed of an infrared camera or a low-light camera, especially for the prevention of crimes at night.

In addition, the moving object detecting means 400 may be a fish-eye lens can be applied for the detection of a wider area, since various techniques are already known and commonly used to correct distortion of a captured image through the fish-eye lens, detailed description thereof will be omitted. .

The controller determines the moving object based on the information input from the moving object detecting means 400, and when it is determined that the moving object is detected, drives the image projecting means 100 to control to project the light-emitting image on the ground.

When the moving object detecting means 400 is an infrared sensor, the controller controls the image projecting means 100 to project the luminous image as soon as a measurement value is input from the moving object detecting means 400. Preferably, in this case, the LED module 120 is controlled to apply power.

Meanwhile, when the moving object detecting means 400 is a camera, the control unit receives an image photographed from the moving object detecting means 400 and stores it in a frame unit. The control unit compares the stored image for each set frame to obtain a difference image. Acquiring a difference image is a technique of binarizing a frame image and extracting a portion having a different number of bits. Since the method of obtaining a difference image through image binarization is a well-known configuration, a detailed description thereof will be omitted.

The control unit identifies the moving object from the outline of the obtained car image, and tracks the moving direction in which direction the moving object moves. The tracking of the moving direction determines that the two contours are identical to each other when the contour of the difference image obtained for each set frame is within the set range and the contour of the difference image of the subsequent frame, and the difference between the contour of the previous image and the subsequent difference The moving direction of the moving object can be specified from the coordinates of the outline of the image.

The control unit drives the variable irradiation angle 200 so that the light of the image projection means 100 can be projected in front of the specified moving direction setting distance of the specified moving object. For example, the range in which the image projection means 100 can project the luminescent image is -20 m to +20 m in the x-coordinate, and 1 m to 20 m in the y-coordinate centered on the prop 10, and the moving object specified from the difference image is x 10 m. , When moving from y5m to x9m, y5m at a speed of 1m per second, the luminous image is to drive the variable illumination angle 200 so that it can be projected onto x7m, y5m. At this time, the second motor 221 is able to maintain y5m, and by continuously driving the first motor 211, the luminous image moves according to the moving speed of the moving object and can be continuously projected in front of the moving object.

Meanwhile, the control unit is operated so that the focus adjustment module 150 is also driven in response to the driving amount of the first motor 211 or the second motor 221 when the irradiation angle variable means 200 is driven. When the luminous image is illuminated at a long distance with a focus at a short distance, there is a fear that light is emitted and a blurry image is projected on the ground. To prevent this, the control unit drives the actuator 153 of the focus adjustment module 150 to enter the projection lens 130 as the irradiation angle variable means 200 illuminates a reference position, that is, a long distance from the pillar 10. The incident angle of the light to be changed is varied. Actuation of the forward or backward movement of the actuator 153 has the opposite tendency depending on the configuration when the focus adjustment lens 151 is a convex lens and a concave lens, and up to the type of the focus adjustment lens 151 in the present invention. It is not limited, and the driving amount of the actuator 153 is preferably set appropriately in consideration of the ground slope, installation height, and the like at the time of the initial installation of the image projection means 100.

In addition, the control unit drives the image rotation motor 143 so that the glass holder 141 can be rotated according to the rotation direction of the first motor 211 or the second motor 221 when the irradiation angle variable means 200 is driven. Order. This is to allow the figure or character of the projected image to be recognized in the forward direction, on the assumption that the moving object, that is, the direction in which the person moves, is in front of the person.

For example, the range in which the image projection means 100 can project the luminescent image is -20 m to +20 m in the x coordinate, and 1 m to 20 m in the y coordinate, centered on the prop 10, and is set in the image projection means 100. When the figure or character of the image glass 140 is set in the forward direction toward the x-coordinate + (plus) direction, the moving object moves at a speed of 1 m per second from -10 m to -9 m in the x-coordinate, and the first motor 211 is in the forward direction. When rotated and driven so that the irradiation range of the image projection means 100 is located in front of the moving body, the moving body is being moved in the + (plus) direction on the x-coordinate, so that the rotation of the image glass 140 is not made. . Conversely, when the moving object is moved at a speed of 1 m per second from x coordinate +10 m to +9 m, the first motor 211 rotates in reverse and is driven so that the irradiation range of the image projection means 100 can be positioned in front of the moving object. , Since the moving object is being moved in the-(minus) direction on the x-coordinate, the image glass 140 should be rotated 180 degrees from the initial setting direction so that the luminous image can be projected in the forward direction of the moving object.

In this regard, if the mobile body moves at a speed of 1 m per second from 10 m to 9 m in the y-coordinate, the second motor 221 rotates in the reverse direction and is driven so that the irradiation range of the image projection means 100 is located in front of the mobile body. At this time, since the moving object is being moved in the-(minus) direction on the y coordinate, the image glass 140 should be rotated 90 degrees from the initial setting so that the luminous image can be projected in the forward direction of the moving object. In the opposite case, that is, when the moving object is moved in the + (plus) direction on the y coordinate and the second motor 221 is driven in the forward direction, the image glass 140 should be rotated -90 degrees from the initial setting to emit light in the forward direction of the moving object Can be projected.

At this time, if the moving object moves diagonally from 10 m to 10 m and 10 m to 9 m and 9.5 m y coordinates, it is also possible to rotate the image glass 140 at an angle, but more movement is required to simplify control. It is also possible to rotate the image glass 140 based on a coordinate having a distance, that is, a motor that rotates more among the first motor 211 or the second motor 221. In the case of the above example, since the x-coordinate moves more distances than the y-coordinate, the image rotation motor 143 is driven to rotate the image glass 140 180 degrees based on the -(minus) direction, which is the movement direction of the x-coordinate. Is ordered.

On the other hand, the control unit may be configured to control the image projection means 100 and the variable-angle-of-view means 200 so that an actor who expects a crime may dismiss the will of the crime when there are two or more moving objects.

Normally, crime often hits a pedestrian in front, and the psychology of criminals is reluctant to expose their crimes to others, so it is effective to project a luminous image in front of a trailing moving object when there are two moving objects. At this time, since the prediction of the crime is preferably limited to a case in which the moving object that follows is gradually getting closer to the preceding moving object, the control unit has one or more moving objects specified from the difference image, and the moving directions of the specified moving objects are in the same direction. When the distance between the two moving objects having the same moving direction toward each other is approaching, the variable irradiation angle 200 is driven so that the light of the image projecting means 100 can be projected in front of the moving direction setting distance of the following moving object. .

For example, when there are two moving objects specified from the difference image, the preceding moving object is referred to as the first moving object and the moving object following it is referred to as the second moving object, and the x-coordinate of the first moving object is 10 m to 9 meters at a speed of 1 m per second. When the x-coordinate of the second moving body is moved from 15m to 13m at a speed of 2m per second, the control unit determines that the second moving body is gradually approaching the first moving body, in front of the set distance of the moving direction of the second moving body. The goal is to lose the will of the crime by projecting a luminous image containing the contents of'Safe CCTV on the way home.'

The tracking of the moving object and projection of the resulting luminous image can be used not only for crimes aimed at pedestrians, but also for prevention of illegal dumping of garbage. For example, when the system of the present invention is installed in a garbage dumping dumping area, the control unit stores coordinates of a point where waste dumping is continuously dumped. Then, when the moving direction of the moving object specified from the vehicle image is directed to the set point, the irradiation angle variable means 200 is driven so that the light of the image projecting means 100 can be projected in front of the moving distance setting distance of the moving object. Order. For example, the coordinates of the point where garbage is habitually dumped illegally are the x-coordinate 0m, the y-coordinate 0m based on the prop 10, and the pedestrian's main pedestrian walkway's y-coordinate is 3m. When the movement direction is shifted from 3 m to 2 m, and 2 m to y coordinates, the illumination angle variable means 200 and the image projection means 100 are driven to project a luminous image indicating that illegal dumping of garbage is being monitored at the position of 1 m y coordinate. By doing so, it is possible to lose the will of dumping without permission.

The speaker unit 300 serves to receive a control signal from the control unit to emit sound, and for this purpose, is installed on the prop 10 on which the image projection means 100 is installed. The control unit, when the moving object is detected based on the information imposed by the moving object detection means 400, and drives the image projection means 100 or the variable-illumination angle 200 to project the luminous image on the ground, the speaker is driven. By displaying a voice message corresponding to the content of the luminous image, it is possible to prevent criminal acts not only visually but also audibly.

The speaker unit 300 is provided inside the control box in which the upper and side portions are sealed so as not to be damaged by rain water or the like, and a control unit may be built together.

The present invention made of the above-described configuration, by projecting a light-emitting image on the ground when a moving object is detected, it is possible to project the light-emitting image only when necessary, thereby increasing the crime prevention effect and reducing power consumption.

In addition, according to the present invention, the first and second cylinders 111 and 112 are configured to be detachable, and the image glass 140 is placed inside the first cylinder 111 when the second cylinder 112 is separated. Since it can be detached and exchanged, there is an effect that the luminescence image can be easily variably applied if necessary.

In addition, the present invention has an effect capable of varying the projection position of the luminescent image by providing the variable irradiation angle 200.

In addition, the present invention has an effect that the focus adjustment module 150 is provided to clearly maintain the focus of the light-emitting image when the projection position of the light-emitting image is variable.

In addition, the present invention has the effect that the moving object detection means 400 is configured as a camera, and identifies the moving object from the difference image of the captured image, and can continuously track and project the luminous image in front of the specified moving object.

In addition, the present invention has an effect capable of reducing the desire for crime, because it can continuously project and project a luminous image in front of a trailing moving object among two or more moving objects.

In addition, the present invention, since the rotation of the image glass 140 is possible, the shape or characters of the luminous image can be located in the forward direction of the moving object has the effect of improving readability.

10: prop
100: image projection means 110: tube
111: first tube 112: second tube
120: LED module 121: heat sink
130: projection lens 140: image glass
141: glass holder 142: rotating teeth
143: image rotation motor 150: focus adjustment module
151: focus adjustment lens 152: focus adjustment block
153: Actuator
200: variable irradiation angle 210: first rotation module
211: 1st motor 212: 1st arm
220: second rotation module 221: second motor
222: second arm 230: fixed bracket
300: speaker unit
400: moving object detection means
500: power supply

Claims (5)

An inner hollow tube with both ends open in the longitudinal direction, an LED module coupled to the inner side of the other end of the barrel to emit light into the inside of the barrel, and an inner side of the barrel to emit light from the LED module An image projection means including a projection lens for refracting the generated light and an image glass provided between the LED module and the projection lens and through which light emitted from the LED module is transmitted;
Moving object sensing means provided to detect a moving object;
A control unit for determining a moving object based on information input from the moving object sensing means, and when the moving object is determined to be detected, driving the image projection means to project a light-emitting image on the ground;
A speaker unit that receives a control signal from the control unit and emits sound;
Image projection and voice guidance system for crime prevention, including.
According to claim 1,
The tube,
A first barrel to which the LED module is coupled;
A second barrel that is coupled in a detachable form to one end of the first barrel, and wherein the projection lens is coupled inside;
A glass holder provided inside one end of the first barrel to which the image glass is detachably inserted;
Image projection and voice guidance system for crime prevention, including.
According to claim 2,
A first rotation module including a first motor having a rotation axis extending in a first direction, and a first arm coupled to the rotation axis of the first motor and rotated according to the rotation of the first motor;
A second motor having a rotation axis extending in a second direction intersecting the first direction, and a second arm coupled to the rotation axis of the second motor and rotated according to the rotation of the second motor, wherein the image projection means is fixed A second rotation module comprising a;
A fixing bracket to which the first rotating module is coupled, and which is fixed to a pillar or a wall;
Variable means for irradiation angle comprising;
Image projection and voice guidance system for crime prevention, including.
The method of claim 3,
An actuator coupled to the inner periphery of the tube;
A focus adjustment block that moves forward or backward in the longitudinal direction according to the driving of the actuator;
A focus adjustment lens coupled to the focus adjustment block to refract light passing through the image glass and transmit it to the projection lens;
Focus adjustment module comprising a;
Including,
The control unit, the image projection and voice guidance system for crime prevention to control the driving of the actuator in response to the driving amount of the first motor or the second motor of the variable angle of irradiation.
The method of claim 3,
The moving object detection means is composed of a low-light camera or an infrared camera,
The control unit compares an image photographed from the moving object detecting means for each set frame, obtains a difference image, identifies a moving object from the outline of the obtained moving image, and projects the image in front of a set moving direction setting distance of the specified moving object An image projection and voice guidance system for crime prevention that drives the variable means of irradiation so that the light of the projector can be projected.

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