KR101673014B1 - Easy Outdoor LED Lamp for Adjusting Height - Google Patents

Easy Outdoor LED Lamp for Adjusting Height Download PDF

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Publication number
KR101673014B1
KR101673014B1 KR1020160024517A KR20160024517A KR101673014B1 KR 101673014 B1 KR101673014 B1 KR 101673014B1 KR 1020160024517 A KR1020160024517 A KR 1020160024517A KR 20160024517 A KR20160024517 A KR 20160024517A KR 101673014 B1 KR101673014 B1 KR 101673014B1
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KR
South Korea
Prior art keywords
coupled
tubular body
tube
bushing
column
Prior art date
Application number
KR1020160024517A
Other languages
Korean (ko)
Inventor
김한규
Original Assignee
주식회사 이린
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 이린 filed Critical 주식회사 이린
Priority to KR1020160024517A priority Critical patent/KR101673014B1/en
Application granted granted Critical
Publication of KR101673014B1 publication Critical patent/KR101673014B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/36—Hoisting or lowering devices, e.g. for maintenance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/116—Fixing lighting devices to arms or standards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

Abstract

In the present invention, the height adjustment, the horizontal direction, and the irradiation direction of the light are selectively set so as to illuminate a desired direction or area of outdoor light used for outdoor street lighting or security, It is easy to adjust height for apartment house.

Description

{Easy Outdoor LED Lamp for Adjusting Height}

[0001] The present invention relates to an outdoor installation of an LED installed in an apartment house, which is easy to adjust the height of a house, and more particularly, to an outdoor installation for outdoor use, such as a streetlight or a crime prevention, Direction and an illumination direction of the light, thereby making it easy to select a light irradiation section selectively according to road conditions.

High light sources such as mercury lamps, high-pressure sodium lamps, and metal halide lamps, which are high luminance discharge lamps, have been used for outdoor installations for LED installation up to now, and street lamps used for roads and parking lots and crime prevention It is classified for use.

Such an outdoor installation light for the LED installation does not reach the ground where the illumination is required and diffuses or the luminaire is fixed to the support and the lighting direction of the luminaire can not be adjusted at the installation site, There were many cases where they were unnecessarily shining where there was no need.

In an outdoor installation for an LED, etc., most of the light irradiated from the light source is not utilized effectively, and the light is leaked to illuminate the nearby building or the illumination light penetrates into the bedroom or the living room through the window of the house, breaking the rhythm of life.

There have been many problems such as the necessity of using a shading curtain or a blind in a window around a streetlight such as an outdoor place.

In such a situation, the luminous lamp of the luminaire is changed to the LED, and the LED lamp of the light has the straightness of the straightness of the light, so that the damage becomes more severe.

Korean Patent Registration No. 10-0972757 (Registered Date: July 22, 2010), title of invention: "LED Street Light"

In order to solve the problems and necessity of the related art, the present invention is characterized in that the height adjustment, the horizontal direction, and the light irradiation direction are selected and set so as to illuminate a desired direction or an area outside the outdoor or the like, And an object of the present invention is to provide an outdoor type LED-type outdoor unit which can easily adjust the height of the apartment for easy selection of the light irradiation area according to the road conditions.

In order to achieve the above object, the present invention provides an elevator-type outdoor outdoor lighting device for a building, which is easy to height-adjust for a house, and includes a column 10 and a columnar member 401 having a diameter smaller than that of the column 10, And a height adjusting device 400 is installed inside the pillar member 401. The height adjusting device 400 includes a receiving part 403 in which a driving motor 404 is installed, A column member 401 having a guide groove 402 formed along the longitudinal direction of the column member 401 so as to surround the screw shaft 410; A spiral bushing 411 which is inserted into the pillar member 401 and is coupled to the screw shaft 410 and a spiral bushing 411 which is coupled to the spiral bushing 411 so as to linearly reciprocate the spiral bushing 411, Rotation preventing piece 412 supported in the groove 402 and the helical bushing 411 linearly reciprocatingly moved A slide bushing 413 coupled to the base rotation preventing piece 412 and slidable in the vertical direction along the column member 401, a frame 415 coupled to the slide bushing 413, And the connection member 100 is connected to the first tube 111, the second tube 121, and the second tube 121 in the order that the connection member 100 is folded in a multi- And the third tubular body 131 are coupled by the stoppers 112, 122 and 132 for preventing the first tubular body 131 from separating from the first tubular body 131. The lamp body 200 is coupled to one side of the third tubular body 131 having the smallest diameter, And the inside of the first tube 111, the second tube 121 and the third tube 131 are communicated with each other so that the rack gear 104 is formed in the longitudinal direction, The pinion gear 102 is engaged with the pinion gear 102 and the drive motor 103 coupled to the pinion gear 102 is operated to rotate the rack gear 10 The first tubular body 111, the second tubular body 121, and the third tubular body 131 are folded right and left so that the length thereof is contracted or elongated, The base plate 200 is constituted by an LED module 300 constituting a plurality of LED light emitting devices 310 and a base plate 210 formed in a circular shape so as to be fixed to the connection member 100 is formed at the center, An outer rail 220 constituting a circular frame is provided on the outer side of the circular plate 210 to secure an installation space 230 in which the LED module 300 is to be installed and the space between the base circular plate 210 and the outer rail 220 The LED module 300 can be rotated in its circumferential direction simultaneously with the installation space 230 of the LED module 300.

According to the present invention having the above-described structure, the height adjustment, the horizontal direction, and the light irradiation direction are selected and set so as to illuminate an outdoor area or the like used for streetlight or crime prevention in a desired direction or area, It is possible to prevent the light from being diffused outside the target range and effectively use the lighting device in accordance with various conditions on the spot.

FIG. 1 is a perspective view showing an outdoor type LED-installed type height adjustable for a residential house according to an embodiment of the present invention.
FIG. 2 is a view illustrating a lighting device such as an LED-installed outdoor lighting device, which is easy to height-adjust for a house, according to an embodiment of the present invention.
FIG. 3 is a side view of a lighting fixture such as an LED-installed outdoor unit for easy height adjustment for a residential house according to an embodiment of the present invention.
4 is a view showing the internal construction of a connecting member such as an LED-installed outdoor unit which is easily adjustable in height for a dwelling house according to an embodiment of the present invention.
FIG. 5 is a perspective view showing an up-and-down movement of an outdoor installation, etc., which is easy to height-adjust for a dwelling house according to an embodiment of the present invention.
And
FIG. 6 is a view illustrating a structure of a height adjustment device for an outdoor installation, such as an LED, which is easily adjustable in height for a apartment house 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 skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Conventional LED-type outdoor lamps are fixed to the supporting posts and can not control the direction of the lighting device at the installation site, so they can not cope with various conditions on the site.

In the present invention, height adjustment, horizontal direction, and light irradiation direction are selected and set so as to illuminate a desired direction or an area of an outdoor light, so that it is easy to adjust the height of the apartment, And an LED-type outdoor unit.

FIG. 1 is a perspective view illustrating an outdoor type LED-type outdoor type lighting apparatus for easy height adjustment of a house, according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating a lighting apparatus of an outdoor type, FIG. 3 is a view showing a side view of a luminaire such as an LED-installed outdoor type which can easily be adjusted in height for a residential house according to an embodiment of the present invention, and FIG. 4 is a cross- And an LED-installed type outdoor unit which can easily adjust the height of the apartment house according to the present invention.

The outdoor unit of the present invention includes a support 10, a connection member 100 vertically coupled to the upper end of the support 10, a connecting member 100, And an LED module 300 having a plurality of LED light emitting devices 310 formed on the lamp 200. The LED module 300 includes a plurality of light emitting devices 300,

The lamp 200 of the present invention is constructed such that a base plate 210 formed in a circular shape so as to be fixedly attached to the connecting member 100 is formed at the center and an outer rail 220 constituting a circular frame is installed outside the base plate 210 Thereby securing an installation space 230 in which the LED module 300 is installed.

The LED module 300 is configured to be rotatable in its circumferential direction in the installation space 230 between the base plate 210 and the outer rail 220.

The base plate 210 has grooves 211 at one side thereof and forms a coupling portion 212 having a rail groove for mounting the LED module 300 along the outer edge of the groove 211.

The coupling portion 212 is formed with a support block 213 having a sliding convex surface 214 coinciding with the inner circumference of the groove 211 and a support block 213 coupled with the support block 213, The slide block 215 constituting the sliding circular arc surface 216 frictionally engaging with the slide groove 215 is coupled with the pipe 217 to move along the rail groove of the engagement portion 212.

A module coupling pallet 240 having a "C" shape in an installation space 230 between the base disc 210 and the outer rail 220 is provided at one side of the base disc 210 so as to move along the rail groove of the coupling portion And is brought into tight contact with the sliding block 215 to rotate.

The other side of the module coupling pallet 240 is coupled to a ring 222 coupled to move along the outer rail 220 and is moved round the installation space 230 between the base disc 210 and the outer rail 220. [ And the movement and rotation of the module coupling pallet 240 are stopped and fixed by the set screw 245 to set the irradiation angle of the LED module 300 .

A guide groove 221 is formed in the inner periphery of the outer rail 220 and a sliding block 225 is inserted into the guide groove 221 so that the rear end of the module coupling pallet 240 is guided simultaneously with the support .

The LED module 300 moves in the circumferential direction along the base plate 210 and the outer rail 220 to control the irradiation range of the divergent light so as to prevent the road light from diffusing outside the target range, So that it is easy to select an irradiation interval.

As shown in FIG. 4, the connecting member 100 according to the embodiment of the present invention has a function of extending or contracting the length of the lamp 200 in the horizontal direction as necessary, thereby increasing or decreasing the length of the lamp 200 do.

The connecting member 100 is composed of a first connecting rod 110, a second connecting rod 120 and a third connecting rod 130 which are both opened and folded in multiple stages.

The first connecting rod 110, the second connecting rod 120 and the third connecting rod 130 are formed of the first tube 111, the second tube 121 and the third tube 131 in the order of decreasing diameters And the lamp 200 is coupled and fixed to one side of the third tube 131 having the smallest diameter.

The first tubular body 111 and the second tubular body 121 are engaged with each other by a first stopping hole 112 and a second stopping hole 122 to prevent the first tubular body 111 and the second tubular body 121 from separating from each other, In order to prevent the third tube body 131 from separating from each other, the second stopper 122 and the third stopper 132 are engaged with each other.

A fourth stopper 133 is formed at one end of the third tube 131 to be coupled to the base plate 210 of the lamp 200.

The interior of the housing 101 communicated with one surface of the first tubular body 111 communicates with the first tubular body 111, the second tubular body 121 and the third tubular body 131.

A rack gear 104 is formed in the housing 101 in the longitudinal direction and extends to the first tube body 111, the second tube body 121 and the third tube body 131.

The rack gear 104 is connected to the first tubular body 111, the second tubular body 121 and the third tubular body 131.

A pinion gear 102 meshes with a part of the rack gear 104 and is coupled to a driving motor 103 for providing a driving force of the pinion gear 102.

When the driving motor 103 provides the driving force of the pinion gear 102, the rack gear 104 moves horizontally to the left and right. When the driving motor 103 moves to the left, the first and second tubes 111 and 121 The second tubular body 121 and the third tubular body 131 are folded in a multi-stage fashion to a larger diameter side so that the length of the connecting member 100 is contracted. (131) is elongated to have a smaller diameter, thereby increasing the length of the connecting member (100).

FIG. 5 is a perspective view illustrating a vertical movement of an outdoor installation, such as an LED, which is easily adjustable for height adjustment for a dwelling house according to an embodiment of the present invention, FIG. 6 is a perspective view Fig. 2 is a view showing a structure of a height adjusting device of the present invention.

The height adjusting device 400 according to the embodiment of the present invention is installed at the upper end of the column 10 in such a manner that a column member 401 having a diameter smaller than that of the column 10 is connected to the column 10 and is disposed inside the column member 401 .

A support portion 403 of a certain space is provided at the inner upper end of the support 10 and a drive motor 404 and a motor shaft 405 are formed in the support portion 403. The motor shaft 405 has a constant And a screw shaft 410 of a length is installed.

At this time, it is preferable that the drive motor 404 uses a forward / reverse motor rotating in the forward / reverse direction.

The screw shaft 410 is rotated by the driving force of the driving motor 404 and is configured to be coupled to the motor shaft 405 of the driving motor 404 to rotate.

The column member 401 is installed on the upper portion of the receiving portion 403 so as to surround the screw shaft 410 and has a guide groove 402 formed along the longitudinal direction.

The column member 401 has a hollow cylindrical shape with a bracket formed at the lower end thereof and is fastened to the receiving portion 403, and the center of the upper end is hollow.

In addition, the upper end of the pillar member 401 further includes a finishing cap 414a coupled with a bearing 414 fastened to support the upper end of the screw shaft 410.

The spiral bushing 411 is inserted into the column member 401 and is spirally coupled to the screw shaft 410. The rotation preventing piece 412 is supported in the guide groove 402 in a state of being coupled to the helical bushing 411 so that the helical bushing 411 reciprocates linearly.

That is, the rotation preventing piece 412 is provided to prevent the rotation of the screw bushing 411 coupled to the screw shaft 410 when the screw shaft 410 is rotated. When the screw shaft 410 rotates The rotation preventing piece 412 coupled to the helical bushing 411 is supported by the guide groove 402 so that the helical bushing 411 can not rotate and the rotation preventing piece 412 and the helical bushing 411 ) Is linear motion.

The slide bushing 413 is coupled to the rotation preventing piece 412 so as to move along the spiral bushing 411 which linearly reciprocates and slides up and down along the pillar member 401.

The lower end of the slide bushing 413 is fixed to the rotation preventing piece 412 using a welding method or a pin.

That is, the slide bushing 413 moves together when the rotation preventing piece 412 coupled to the helical bushing 411 moves. The frame 415 is coupled to the slide bushing 413 and fixed to the front side of the connecting member 100. [ The connecting member 100 is fixed and supported on the frame 415.

When the screw shaft 410 is rotated by the drive motor 404, the height adjusting device 400 slides along the screw shaft 410 in the vertical direction by the helical bushing 411 and the slide bushing 413, The frame 415 coupled to the slide bushing 413 is also moved upward and downward. Since the lamp unit 200 is coupled to the frame 415 by the connecting member 100, the lamp unit 200 is moved up and down.

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

10: column 100: connecting member
101: housing 102: pinion gear
103: drive motor 110: first linkage
111: first tube member 112: first stop member
120: second connecting rod 121: second tube
122: second hook 130: third hook
131: Third tube 132: Third stopper
133: fourth stop 104: rack gear
200: luminaire 300: LED module
310: LED light emitting element 400: height adjusting device
401: pillar member 402: guide groove
403: Support part 404: Driving motor
405: motor shaft 410: screw shaft
411: Helical bushing 412:
413: Slide bushing 414: Bearing
415: frame

Claims (1)

A column 10 and a column member 401 having a diameter smaller than that of the column 10 are connected to the upper end of the column 10 so that a height adjusting device 400 is installed inside the column member 401,
The height adjusting device 400 includes a receiving unit 403 having a driving motor 404 installed therein, a screw shaft 410 having a predetermined length rotated by a driving force of the driving motor 404, A columnar member 401 having a guide groove 402 formed along the longitudinal direction and provided at an upper portion of the support member 403 so as to surround the columnar member 401, A rotation preventing piece 412 supported by the guide groove 402 in a state of being coupled to the helical bushing 411 so as to linearly reciprocate the helical bushing 411, A slide bushing 413 coupled to the rotation preventing piece 412 so as to move along the bushing 411 and slidable in the vertical direction along the column member 401 and a frame 415 coupled to the slide bushing 413, And a connecting member (100) fixedly connected to the frame (415) and coupled in the vertical direction,
The upper end of the column member 401 further includes a finishing cap 414a coupled with a bearing 414 coupled to support the upper end of the screw shaft 410,
The rotation preventing piece 412 prevents the screw bushing 411 coupled to the screw shaft 410 from rotating together when the screw shaft 410 rotates and the screw shaft 410 rotates The rotation preventing piece 412 coupled to the helical bushing 411 is supported by the guide groove 402 so that the helical bushing 411 can not rotate and the rotation preventing piece 412 and the helical bushing 411 linearly move and the slide bushing 413 is coupled to the rotation preventing piece 412 so as to move along the helical bushing 411 reciprocating linearly, 401 in the vertical direction,
The lower end of the slide bushing 413 is fixed to the rotation preventive piece 412 by welding or using a pin and the slide bushing 413 is fixed to the rotation preventive piece 412 Further comprising a frame 415 which moves together when moved and which is fixed to the slide bushing 413 and fixed to the front side of the linking member 100 so that the linking member 100 is fixedly supported,
The connection member 100 is formed of a first tube 111, a second tube 121 and a third tube 131 in the order of folding in an antenna shape and decreasing in diameter. The first tube 111, The first and second hooking openings 112 and 122 are engaged with each other so as to prevent the second tube body 121 and the second tube body 121 from separating from each other, A second latching member 122 and a third latching member 132 are coupled to each other in a latching manner to prevent the latching member 131 from separating from each other, 200 are coupled and fixed,
The housing 101 communicated with one surface of the first tube 111 communicates with the first tube 111, the second tube 121 and the third tube 131, The first tubular body 111 and the second tubular body 121 communicate with each other so that the rack gear 104 is formed in the longitudinal direction and the rack gear 104 is connected to the first tubular body 111 ), The second tube body 121, and the third tube body 131,
A pinion gear 102 is engaged with a part of the rack gear 104 and the rack gear 104 is driven by a driving motor 103 coupled to the pinion gear 102, The first tubular body 111, the second tubular body 121, and the third tubular body 131 are folded in a multi-stepwise fashion toward a larger diameter, The first tubular body 111, the second tubular body 121 and the third tubular body 131 are elongated to have a smaller diameter so that the length of the connecting member 100 The first tubular body 111, the second tubular body 121, and the third tubular body 131 are folded to the left and right so that the length is contracted or elongated,
The lamp unit 200 includes an LED module 300 constituting a plurality of LED light emitting devices 310 and a base plate 210 formed in a circular shape so as to be fixedly attached to the connection member 100, An outer rail 220 is installed on the outer side of the base plate 210 to secure a mounting space 230 in which the LED module 300 is to be installed and the base plate 210 and the outer rail 220 The LED module 300 is rotatable in its circumferential direction at the same time as the LED module 300 is installed in the installation space 230 between the LED module 300 and the LED module 300.
KR1020160024517A 2016-02-29 2016-02-29 Easy Outdoor LED Lamp for Adjusting Height KR101673014B1 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020160024517A KR101673014B1 (en) 2016-02-29 2016-02-29 Easy Outdoor LED Lamp for Adjusting Height

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102417124B1 (en) * 2021-02-22 2022-07-05 김형석 Lighting apparatus for crossmark

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080088687A (en) * 2007-03-30 2008-10-06 박영훈 The streetlight to control pole
KR100972757B1 (en) 2010-01-06 2010-07-29 주식회사 라이트론텍 Streetlight using led
KR20100091648A (en) * 2009-02-11 2010-08-19 정종상 A roadlamp
KR101580617B1 (en) * 2014-06-05 2015-12-28 오병오 Outdoor LED lamp mechanism for easy selection of lighting section

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080088687A (en) * 2007-03-30 2008-10-06 박영훈 The streetlight to control pole
KR20100091648A (en) * 2009-02-11 2010-08-19 정종상 A roadlamp
KR100972757B1 (en) 2010-01-06 2010-07-29 주식회사 라이트론텍 Streetlight using led
KR101580617B1 (en) * 2014-06-05 2015-12-28 오병오 Outdoor LED lamp mechanism for easy selection of lighting section

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102417124B1 (en) * 2021-02-22 2022-07-05 김형석 Lighting apparatus for crossmark

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