KR20210122474A - Illumination system for projecting a gobo image with three dimensional effect - Google Patents

Abstract

Disclosed is an illumination system for displaying a gobo image with a three-dimensional effect on a ground or road surface. The illumination system includes a light source; a lens assembly which light from the light source enters and has a light quantity control unit, a gobo image generation unit, and a focusing lens unit; and a refractive lens coupled to a light exit surface of the lens assembly, wherein the gobo image generation unit has a first element or closer that forms light from the light source into a specific light beam pattern and, when the light source is operated, the light beam pattern passing through the refractive lens expresses a gobo image with a three-dimensional effect on an object or a floor in a certain distance.

Description

A lighting device that displays a three-dimensional effect gobo image {ILLUMINATION SYSTEM FOR PROJECTING A GOBO IMAGE WITH THREE DIMENSIONAL EFFECT}

The present invention relates to a gobo lighting device, and more particularly, to a lighting device for displaying a gobo image having a three-dimensional effect.

The gobo lighting device is mainly used to set a scene or create an atmosphere using colored light in theater lighting, architectural lighting, hotels, restaurants, office spaces, and the like.

Recently, the gobo lighting device is used to project a logo image on the road in front of a store instead of a signboard or to project advertisement content for a product sold in the store, and the range of its use is expanding.

These gobo lighting devices not only do not need to change filters to change color by having multi-color LEDs, but can also combine multiple LEDs to produce almost any lighting color and change the lighting color by the electronics coupled to the LEDs. . In addition, since the generation or change of various colors can be performed through an automatic programming method, the market is rapidly growing.

Registered Patent Publication No. 10-1251370 (2013.04.05.)

The present invention is a kind of the above-described gobo lighting device, and gives a three-dimensional effect to the gobo image of the road surface display displayed at a relatively greater distance than in the case of a general gobo lighting device on a road on which a vehicle runs, such as a general road, an exclusive road for a car, a highway, etc. An object of the present invention is to provide a lighting device of a new structure that can do this.

Another object of the present invention is to provide a lighting device for a three-dimensional effect road surface display gobo image, which can provide road condition information such as icing and accidents while replacing the existing road surface display that displays the speed limit on the road. have.

Another object of the present invention is to provide a lighting device capable of displaying a stereoscopic effect gobo image intuitively recognizable to a long-distance driver on a road surface using a structure in which a refractive lens is combined.

Another object of the present invention is to provide a lighting device for displaying a stereoscopic effect gobo image capable of providing road condition information to a driver at an intersection, crosswalk, tunnel, school zone, icy road, etc.

A lighting device according to an aspect of the present invention for solving the above technical problem is a lighting device for displaying an input effect gobo image, comprising: a light source; a lens assembly receiving light from a light source and having a light quantity control unit, a gobo image generation unit, and a focusing lens unit; and a refractive lens coupled on the light exit surface of the lens assembly. Here, the gobo image generator includes a first element or a closure that generates light from a light source in a specific light beam pattern. When the light source is operated, the light beam pattern passing through the refractive lens expresses a stereoscopic effect gobo image on a floor or an object spaced apart by a certain distance.

In one embodiment, the three-dimensional effect gobo image includes a road surface mark, and on a plane parallel to the road surface, the lower width of the image is smaller than the upper width of the image, and the interval between the lower width and the upper width is 3 to 7 times the upper width. it's a boat

In one embodiment, as the size with the highest visibility at a height of 1.5 meters at a location 60 meters away from the stereoscopic effect gobo image, the ratio of the bottom width to the top width of the stereoscopic effect gobo image is 1:7, and the bottom width and The ratio between the top width and the top width is 4.46:1.

In one embodiment, the three-dimensional effect gobo image includes a text, a figure, a logo, or a combination thereof displayed on a road surface, and a closure or a first element that is changed according to the surrounding environment or target detected through the sensor. Corresponds to a specific light-blocking pattern or a specific light-transmitting pattern.

In an embodiment, the light quantity control unit controls a degree of uniformity of an image generated by the light of the light source by adjusting a tilt or a pitch of a main convex lens disposed on the emission surface of the light source.

In an embodiment, the focusing lens unit includes a convex lens and a concave lens, and controls out-focusing and in-focusing of the light beam pattern.

In one embodiment, the light source includes a light emitting diode multi-package array.

If the lighting device for displaying the above-described input effect gobo image is used, there is an effect that it is possible to provide road condition information such as icing and accidents while replacing the existing road surface display indicating the speed limit on the road.

In addition, according to the present invention, it is possible to effectively create a three-dimensional effect road surface display that can be intuitively recognized by a long-distance driver on the road surface by using a lighting device structure in which a gobo and a refractive lens are combined to form a specific light beam pattern.

In addition, according to the present invention, it is possible to provide road condition information as a stereoscopic effect gobo image to a driver in an intersection, a crosswalk, a tunnel, a school zone, an icy road, etc.

1 is a view for explaining a lighting device for displaying a stereoscopic effect gobo image according to an embodiment of the present invention.
2 is a view for explaining the function of the stereoscopic effect gobo image by the lighting device of FIG.
3 is a view showing the size of the stereoscopic effect gobo image of FIG.
FIG. 4 is a block diagram of a configuration that may be employed in the lighting device of FIG. 1 .
FIG. 5 is a schematic block diagram of the configuration of the lighting device of FIG. 4 .
6 is a view for explaining a refraction angle control unit that can be employed in the lighting device of FIG. 5 .
FIG. 7 is a view illustrating a light beam pattern passing through the refraction angle control unit of FIG. 6 .
FIG. 8 is a block diagram of a configuration of a control unit of the lighting device of FIG. 4 .
9 is a schematic diagram of some configurations of the lighting device of FIG. 1 .
FIG. 10 is a diagram for explaining a principle of generating a light beam pattern of the lighting device of FIG. 9 .
11 is a view showing a light beam pattern of the present embodiment by the lighting device of FIG. 1 and a gobo image of a comparative example.
12 is a view for explaining an operating principle of a lighting device according to another embodiment of the present invention.
FIG. 13 is a view for explaining an operation principle of a light quantity control unit in the lighting device of FIG. 12 .
14 is a view showing a three-dimensional effect road surface display by the lighting device according to the present embodiment compared with a basic gobo image.
15 is a diagram illustrating a gobo image displayed as a light beam pattern of the lighting device according to the present embodiment.
16 is a flowchart illustrating a process of changing the gobo image of FIG. 15 according to a detection signal of a sensor.

The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Therefore, the configuration shown in the embodiments and drawings described in the present specification is only one of the most preferred embodiments of the present invention and does not represent all the technical spirit of the present invention, so various equivalents that can replace them at the time of the present application It should be understood that there may be water and variations.

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

1 is a view for explaining a lighting device for displaying a stereoscopic effect gobo image according to an embodiment of the present invention. 2 is a view for explaining the function of the stereoscopic effect gobo image by the lighting device of FIG. 3 is a view showing the size of the stereoscopic effect gobo image of FIG.

Referring to FIG. 1 , the lighting device 100 according to this embodiment is a lighting device for displaying a three-dimensional effect gobo image, and is formed by a predetermined fastening means 102 at a predetermined height on a support, pole, pole or post 10 . fixed installed. A power control device 30 , a solar cell module 40 , and a lighting power control box 140 may be installed on the post 10 .

The lighting power control box 140 may be a device that supplies power to the lighting device 100 and controls the operation of the lighting device 100 , and the power control device 30 performs power conversion and It may be a device that performs control.

The lighting device 100 may generate a three-dimensional effect gobo image 500 as a kind of road marking on the floor, such as a road surface, at a place separated from the post 10 by a certain distance.

The stereoscopic effect gobo image 500 is a distance (d1) from the post 10 at a viewpoint (eg, the driver's view of the vehicle 400) at a height h1 of 1.5 m in the vicinity of the post 10, as shown in FIG. 2 . It can be generated to have the best visibility when it is formed on the floor at a place about 60m away.

The planar size of the three-dimensional effect gobo image 500 may have the size of a road marking installed between two adjacent lanes of the driving road of the vehicle 400 . That is, as shown in FIG. 3, the ratio (width ratio) of the bottom width (X1) to the top width (Y1) of the entire character of the stereoscopic effect gobo image 500 is approximately 1:7, and the bottom width (X1) and Preferably, the ratio (depth ratio) of the gap Z1 between the top width Y1 and the top width Y1 is approximately 4.46:1. In addition, it is preferable that the ratio of the lower width (x2) to the upper width (y2) of the unit character or unit character of the stereoscopic effect gobo image 500 is approximately 1:1.43.

As such, in the stereoscopic effect gobo image 500 according to this embodiment, the depth ratio of the interval Z1 between the bottom width X1 and the top width Y1 and the top width Y1 is approximately 3:1 to 5: It may be 1, and the width ratio may also be slightly adjusted in response to this depth ratio. According to the three-dimensional effect gobo image of this size, it is possible to provide a road surface display with excellent visibility to pedestrians and drivers at a distance of several tens of meters.

FIG. 4 is a block diagram of a configuration that may be employed in the lighting device of FIG. 1 .

Referring to FIG. 4 , the lighting device 100 according to the present embodiment includes a lighting assembly 100a and a control device 130 , and may be connected to the sensor 200 .

The lighting assembly 100a may be a main body of a lighting device in which the control device 130 is separately installed, and may be installed at a predetermined height of a post by fastening means or the like.

The control device 130 may be connected to the lighting assembly 100a through a wire cable, etc. in a state of being inserted into the lighting power control box as a separate device. Of course, in a modified example, the control device 130 may be integrally installed in the housing or case of the lighting assembly 100a, and in this case, the lighting assembly 100a may be referred to as the lighting device 100 itself. The lighting device to be described below may be assumed to be a lighting assembly in which the control device is integrally mounted in a housing for convenience of description.

The aforementioned control device 130 may include a control unit 110 and a communication unit 120, and the control unit 110 may include any one selected from a logic circuit, a microcomputer, a microprocessor, a controller, and the like, and a communication unit ( 120) is wired communication, Wi-Fi, low-power Bluetooth (bluetooth low energy, BLE), Z-wave, Zigbee, LoRa, UWB, such as short-distance wireless communication, or wave (wireless access invehicular environments, WAVE)-based short-distance It may include a sub-communication system supporting at least one communication protocol selected from mobile communication such as dedicated short range communication (DSRC), long-term evolution (LTE), 5G, or a broadband network.

The sensor 200 may be a fog detection sensor. The sensor 200 may be configured to detect fog through analysis of an effective area in an image captured by a camera or to detect fog by calculating a visibility distance within the effective area.

In addition, the sensor 200 measures the ambient illuminance to determine the day and night or an illuminance sensor for judging a clear day and a cloudy day, a snow detection device for snow detection, and a sensing for detecting the road surface and ambient temperature. It may include a device, a snowfall measuring device for measuring the amount of snowfall, or a combination thereof.

FIG. 5 is a schematic block diagram of the configuration of the lighting assembly of FIG. 4 . 6 is a view for explaining a refraction angle control unit that can be employed in the lighting device of FIG. 5 . FIG. 7 is a view illustrating a light beam pattern passing through the refraction angle control unit of FIG. 6 .

Referring to FIG. 5 , the lighting assembly 100a of the lighting device according to the present embodiment includes a lighting assembly body 70 and a refraction angle control unit 90 .

The lighting assembly body 70 may be coupled to the refraction angle control unit 90 on the emitting surface from which the light beam pattern therein is emitted. The illumination assembly body 70 includes a main convex lens tilt control actuator 82 , a gobo image generation control actuator 84 , and a focusing lens control actuator 86 .

The main convex lens tilt control actuator 82 adjusts the tilt of the main convex lens mounted on the lighting assembly body 70 according to a control signal from the controller. The gobo image generation control actuator 84 controls the operation of the gobo image generation unit in a manner such as rotating the gobo image generation unit according to the control signal of the control unit, so that a light beam pattern is generated through a specific pattern film of the closure or the first element operate as much as possible. The focusing lens control actuator 86 may adjust an interval between lenses in a focusing lens array including a convex lens and a concave lens according to a control signal from the controller.

The refraction angle control unit 90 refracts the light beam pattern emitted from the lighting assembly body 70 at a preset angle. The refraction angle control unit 90 may include various types of refraction lenses, such as a prism lens, a Fresnel lens, and a free-form lens.

For example, as shown in FIGS. 6A and 7A , the light beam pattern coming out of the housing 70a of the lighting assembly body is refracted at a first angle while passing through the prism lens 90a. The three-dimensional effect gobo image irradiated on the road surface and displayed on the road surface by the angle of refraction may have a shape in which the width between the width of the bottom and the width of the top is about 5 times the width of the top.

In addition, as shown in FIGS. 6 (b) and 7 (b), the light of the light beam pattern emitted from the housing 70a of the lighting assembly body passes through the Fresnel lens 90b and is smaller than the first angle. The three-dimensional effect gobo image that is refracted at a second angle and irradiated on the road surface, and displayed on the road surface by the refraction angle, may have a form in which the width between the lower end width and the upper end width is about 4 times or more and 5 times or less of the upper width. have.

In addition, as shown in FIGS. 6(c) and 7(c), the light of the light beam pattern emitted from the housing 70a of the lighting assembly body passes through the preform lens 90c and is smaller than the second angle. The three-dimensional effect gobo image that is refracted at 3 angles and irradiated on the road surface, and displayed on the road surface by the angle of refraction, may have a form in which the width between the bottom width and the top width is about 3 times or more and 4 times or less of the top width. .

8 is a block diagram of a control unit employable in the lighting device of FIG. 4 .

Referring to FIG. 8 , the control unit 110 of the lighting device according to the present embodiment includes a gobo illumination control unit 111 and an image variable control unit 119 .

The gobo illumination control unit 111 controls the tilt angle of the light source and the main convex lens and the arrangement of the focusing lens. The gobo lighting control unit 111 includes a light source control unit 113 , a uniformity control unit 115 , and a focusing control unit 117 .

The light source control unit 113 controls the operation of a plurality of LED light sources to secure the amount of light of the gobo image to focus and optimize the light beam pattern of the gobo image.

The evenness control unit 115 controls the evenness of the gobo image generated by the light from the light source by adjusting the tilt or pitch of the main convex lens disposed in front of the emission surface of the light source.

The focusing control unit 117 controls out-focusing and in-focusing of the light beam pattern for the gobo image by adjusting the distance between the lenses in the lens array including the convex and concave lenses of the focusing lens unit. do.

The image variable control unit 119 operates to generate a desired specific light beam pattern by controlling the operation of the gobo image generation unit.

9 is a schematic diagram of some configurations of the lighting device of FIG. 1 . FIG. 10 is a diagram for explaining a principle of generating a light beam pattern of the lighting device of FIG. 9 . 11 is a view showing a light beam pattern of the present embodiment by the lighting device of FIG. 1 and a gobo image of a comparative example.

Referring to FIG. 9 , the lighting device 100 according to the present embodiment includes a housing 70a, a light source 71 installed inside the housing 70a, a light source lens 72, a main convex lens 73, and a gobo. It includes an image generating unit 74 , a first planoconvex lens 75 , a biconvex lens 76 , a biconcave lens 77 , and a second planoconvex lens 78 .

In addition, the lighting device 100 is coupled to the first lens support part 81 for supporting the light source lens 72 inside the housing 70a, the main convex lens 73, and controls the tilt of the main convex lens 73. A first actuator 82, a second actuator 84 coupled to the gobo image generating unit 74 and operative to select a specific gobo or closer or a first element in the gobo image generating unit 74, focusing control A third actuator 86 for adjusting the distance between adjacent lenses in the lens arrangement (see 75 to 78) for , and a second lens support 87 for movably supporting the lens arrangement.

The light source 71 includes a light emitting diode (LED). The light emitting diode may include at least one of red, blue, green, and white LEDs. The light source 71 is installed on a heat sink or a heat sink so as to radiate heat generated during a light emitting operation to the outside. Such a heat sink or heat sink may have a shape that can be inserted into the housing 70a having a cylindrical, rectangular, or polygonal cross section.

The light source lens 72 is disposed on the light exit surface of the light source 71 and includes a planar convex lens, and the convex part of the lens is installed to be positioned on the opposite side of the exit surface of the light source 71 .

The main convex lens 73 has a double convex lens shape, and is installed such that the tilt or pitch angle is adjusted by the first actuator 82 . Adjusting the tilt angle of the main convex lens 73 may improve the evenness of the gobo image generated by the lighting device 100 according to the type or amount of light of the light source 71 . Here, the uniformity refers to a uniform degree of illuminance on a road surface illuminated by lighting. That is, the evenness can be a criterion for judging the degree of uneven illumination due to the difference in brightness for each area of the stereoscopic effect gobo image displayed on the road surface.

When the tilt of the main convex lens 73 is controlled, the uniformity of the three-dimensional effect gobo image finally generated by the light beam pattern passing through the refraction lens and refracted and then irradiated to the road surface can be improved.

The gobo image generator 74 includes a closer 74a and a pattern film 74b. The closure 74a is a dark plate, which is installed to block the entire cross-section of the middle portion of the housing 70a, minimizes scattered or omnidirectional scattered light, and guides a collimating luminous intensity area. The pattern film 74b is installed in the middle portion for guiding the effective luminous intensity area in the closure 74a and passes only a part of the light from the light source to generate a specific light beam pattern. A specific light beam pattern includes a beam pattern for a three-dimensional logo or gobo image. In addition, the pattern film 74b includes a plurality of gobo image expression shapes, and selects or changes any one specific gobo image expression shape among a plurality of gobo image expression shapes preset by the operation of the second actuator 84 can be configured to

In the focusing lens unit, the first convex planar lens 75 has a convex surface disposed on the side facing the pattern film 74b , and the second convex planar lens 78 is disposed between the first convex planar lens 75 and the first convex lens 75 . The double-convex lens 76 and the double-sided concave lens 77 are placed, and the flat surface is installed to face the double-sided concave lens 77 .

As shown in FIG. 10 , the above-described lighting device 100 is managed by the first section A1 managed by the light source controller, the second section A2 managed by the gobo image generator, and the focusing controller and a third section A3.

In the first section A1, the light from the light source is condensed through the light source lens and the main convex lens to optimize the light collection so as to secure the maximum amount of light for the stereoscopic effect gobo image. Also, in the first section A1, the uniformity of the stereoscopic effect gobo image is improved through the tilt control of the main convex lens.

In the second section A2, a closure is used to minimize the scattered or omnidirectional scattered light of the light source and guide the effective luminous intensity area. A patterned film is disposed in the effective luminous intensity region to convert light of a relatively area of the light source into a specific light beam pattern.

In the third section A3, out-focusing and in-focusing of the stereoscopic effect gobo image are controlled by using a convex lens and a concave lens.

According to the configuration of the lighting device 100 described above, as shown in FIG. 11, the gobo image of Comparative Example (a) by the lighting device including the light source, the convex lens, and the closure is the same as the stereoscopic effect gobo image of this embodiment (b). It can be created by converting it to an image. Unlike the gobo image of Comparative Example (a), when a person or a driver from a distance of several tens of meters sees this stereoscopic effect gobo image, it is viewed as a gobo image with a stereoscopic effect in the form of being erected on the road surface.

12 is a view for explaining an operating principle of a lighting device according to another embodiment of the present invention. FIG. 13 is a view for explaining an operation principle of a light quantity control unit in the lighting device of FIG. 12 . 14 is a view showing a three-dimensional effect road surface display by the lighting device according to the present embodiment compared with a basic gobo image.

Referring to FIG. 12 , the lighting device according to the present embodiment uses a multi-package array as a light source 71 . In the multi-package array, a plurality of LEDs are arranged adjacent to the light-emitting surface of the light source 71, and since a multi-array lens is used, the light-emitting surface of the multi-package array is several times to tens of times wider than that of a single LED in the form of a point light source. have.

When such a multi-package array is used as the light source 71 , a decrease in uniformity in the light beam pattern according to the refraction angle of the exit surface lens of the light source 71 can be compensated.

As described above, in this embodiment, in addition to compensation for illuminance uniformity through tilt control of the main convex lens in the first section A1, the multi-package dimming configuration of the light source 71 in the front end A0 of the first section A1 Through (A0), it is possible to effectively compensate the illuminance uniformity of the stereoscopic high-level image.

For example, the imbalance of illumination uniformity in the middle and upper part (e1) of the stereoscopic effect elevation image as in (a1) of FIG. 13, or the upper part of the stereoscopic effect elevation image as in FIG. 13 (a2) ( Multi-package of the light source 71, the imbalance of the illuminance uniformity in e2) and the lower part e3, or the illuminance uniformity in the upper part e4 of the three-dimensional effect high-level image as in FIG. 13 (a3). By compensating through the dimming configuration and the tilt control of the main convex lens, it is possible to create a stereoscopic high-level image as shown in FIG. 13(b).

According to this embodiment, as shown in FIG. 14 , the gobo image 500a of the comparative example (a) can be generated by converting the gobo image 500b of the present embodiment (b) into a stereoscopic effect. This stereoscopic effect gobo image 500b can be viewed as an image with a stereoscopic effect in the form of being erected on the road surface, unlike the gobo image of Comparative Example (a), when the driver of the vehicle 400 distant from a distance of several tens of meters sees.

15 is a diagram illustrating a gobo image displayed as a light beam pattern of the lighting device according to the present embodiment. 16 is a flowchart illustrating a process of changing the gobo image of FIG. 15 according to a detection signal of a sensor.

The lighting device according to the present embodiment may be configured to selectively express any one of a plurality of image expression shapes in the gobo image generation unit. The image expression shape is an image expression shape 501 representing an icy road as shown in Fig. 15 (a), or an image expression shape 502 representing a traffic accident as shown in Fig. 15 (b) , may include an image expression shape 503 indicating a child protection area as shown in (c) of FIG.

The above-described image expression shapes are applied to gobo lighting devices such as intersections, crosswalks, tunnels, school zones, and icy roads, and may be used to provide road situation information to pedestrians or drivers.

In addition, the lighting device operates the second actuator under the control of the image variable control unit of the lighting device to select any one of the pattern films coupled to the closure, so that a light beam pattern through a pattern film selected from among a plurality of image expression shapes , and refracting the generated light beam pattern through a refractive lens, a three-dimensional effect gobo image in which the illuminance uniformity is compensated and out-focusing and in-focusing are controlled can be displayed on the road surface.

In addition, the selection of the feature image expression shape may be performed according to a result of peripheral sensing through a sensor.

For example, as shown in FIG. 16 , in the method of operating the lighting device according to the present embodiment, the periphery of the gobo lighting road surface display area may be sensed with a sensor ( S161 ). The sensor may be installed on a post on which the lighting device is installed.

Next, the control device of the lighting device determines whether a preset target is detected according to the surrounding sensing (S162). Targets may include pedestrians, icing, traffic accidents, and the like.

As a result of the determination in step S162, if the target is detected (Yes in S162), the control device changes the current pattern film to a gobo or pattern film set for the target image, or if the pattern film to be changed is the same of the pattern film is maintained (S163). Meanwhile, if the target is not detected as a result of the determination in step S162, the current process may be terminated or the target detection step may be periodically or intermittently performed at predetermined time intervals (No in S162).

Next, the control device detects whether the current state or a target corresponding to the current situation is maintained, such as while pedestrians are walking, maintaining ice, or handling a traffic accident through the surrounding sensing again (S164).

As a result of the determination in step (S164), if the target is not detected (No in S164), the control device returns the changed gobo or pattern film to the default gobo or pattern film, and displays the stereoscopic effect gobo image preset for the lighting device. The road marking is performed again (S165). On the other hand, as a result of the determination in the step (S164), if the target is detected (Yes in S164), it is possible to maintain a gobo or pattern film for the target image so that the stereoscopic effect gobo image corresponding to the target is continuously displayed.

As described above, the lighting device according to the present embodiment utilizes a phenomenon of image distortion (the upper and lower sizes change) due to a combination of a plurality of lenses and a difference in refraction angles of the refractive lenses due to the height of the light pole or the post and the irradiation angle of the illumination. In this way, the gobo image irradiated on the ground has the characteristics of a three-dimensional effect with a short bottom and a long top. This three-dimensional effect gobo image is distinguished from the existing road markings, that is, road markings that use reflective paint to display caution, regulation, instructions, and auxiliary signs. In particular, the three-dimensional effect gobo image of this embodiment can provide a variable road surface display that reflects information on changing road conditions, unlike the existing road surface display using reflective paint that cannot reflect road condition information at all.

As described above, in the detailed description of the present invention, preferred embodiments have been described, but a person of ordinary skill in the art can do so without departing from the spirit and scope of the present invention as set forth in the following claims. It will be understood that various modifications and variations of the present invention may be made.

Claims (7)

light source;
a lens assembly receiving light from the light source and having a light quantity control unit, a gobo image generation unit, and a focusing lens unit; and
a refractive lens coupled to the light exit surface of the lens assembly;
The gobo image generator includes a first element or a closure that forms a specific light beam pattern of the light source,
When the light source is operated, the light beam pattern passing through the refractive lens displays a three-dimensional effect gobo image on a floor or an object spaced apart by a predetermined distance. The method according to claim 1,
The three-dimensional effect gobo image includes a road surface mark, the lower width of the image on a plane parallel to the road surface is smaller than the upper width of the image, and the interval between the lower end and the upper width is 3 to 7 times the upper width. lighting device. 3. The method according to claim 2,
As the size with the highest visibility at a height of 1.5 meters at a position 60 meters away from the stereoscopic effect gobo image, the ratio of the bottom width to the top width of the stereoscopic effect gobo image is 1:7, and between the bottom width and the top width The ratio of the spacing between the top and the top width is 4.46:1. 3. The method according to claim 2,
The three-dimensional effect gobo image includes a text, a figure, a logo, or a combination thereof displayed on the road surface, and a specific light blocking pattern or specific light of the first element that is changed according to the surrounding environment or target detected through a sensor A gobo lighting device corresponding to a transmission pattern. The method according to claim 1,
The light amount control unit is a gobo lighting device for controlling the degree of uniformity of the image generated by the light of the light source by adjusting the tilt (tilt) or pitch (pitch) of the main convex lens disposed on the emission surface of the light source. The method according to claim 1,
The focusing lens unit includes a convex lens and a concave lens, and the gobo lighting device controls out-focusing and in-focusing of the light beam pattern. The method according to claim 1,
The light source is a light emitting diode multi-package array gobo lighting device.

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