KR101618860B1 - LED lamp for alarm - Google Patents

LED lamp for alarm Download PDF

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Publication number
KR101618860B1
KR101618860B1 KR1020150112693A KR20150112693A KR101618860B1 KR 101618860 B1 KR101618860 B1 KR 101618860B1 KR 1020150112693 A KR1020150112693 A KR 1020150112693A KR 20150112693 A KR20150112693 A KR 20150112693A KR 101618860 B1 KR101618860 B1 KR 101618860B1
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KR
South Korea
Prior art keywords
case
substrate
opening
led lamp
present
Prior art date
Application number
KR1020150112693A
Other languages
Korean (ko)
Inventor
신동헌
Original Assignee
(주)에스알디코리아
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.)
Filing date
Publication date
Application filed by (주)에스알디코리아 filed Critical (주)에스알디코리아
Priority to KR1020150112693A priority Critical patent/KR101618860B1/en
Application granted granted Critical
Publication of KR101618860B1 publication Critical patent/KR101618860B1/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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0064—Health, life-saving or fire-fighting equipment
    • F21V33/0076—Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21V17/16—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 by deformation of parts; Snap action mounting
    • F21V17/162—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 by deformation of parts; Snap action mounting the parts being subjected to traction or compression, e.g. coil springs
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • F21Y2101/02—

Abstract

The present relates to an LED lamp (100) for warning, which includes: a case (110) having an opening part (111) which is made of transparent materials and is opened and closed; a substrate (120) stored in the case (110); a battery (140) installed on the substrate (120); an LED lamp (130) installed on the substrate (120); a switch (170) installed on the substrate (120) and exposed by penetrating the case (110); and a magnet (150) attached to the lower surface of the substrate (120) to be stored in the case (110). Therefore, if the lower surface of the present invention is attached to a vehicle or structure such as a guardrail (G), magnetic force of the magnet (150) facilitates an attachment and stably maintains the attachment in order to conveniently announce an emergency situation.

Description

[0001] The present invention relates to an LED lamp for an alarm,

The present invention relates to an alarm LED lamp, and more particularly, to an alarm LED lamp which is constructed such that when an accident occurs at night, it is mounted on a structure, a rabbit or a vehicle to easily inform an accident point .

1 is a front view illustrating a portable LED lamp according to the background art.

A portable LED lamp 1 used for outdoor irradiation is constituted by a case 10 constituted of a transparent plate 20 and accommodated in the case 10 to correspond to the transparent plate 20 And a light emitting diode (LED) 40, which is connected to the substrate 30 and faces the transparent plate 20, is formed. A battery for supplying power to the substrate 30 is accommodated in the case 10. The switch 30 is mounted on the board 30 and functions as an on / off switch of the power source. The switch is exposed through the back of the case 10 to form an exposed switch.

Accordingly, when the switch is operated to supply a current, current is supplied to the LED 40 through the substrate 30 to emit light. When not in use, the switch is operated to stop the current supply. In addition, depending on the circuit configuration of the substrate 30, the switch may operate to emit light so as to blink.

The portable LED lamp 1 functions to not only illuminate the light at night in the outdoors but also notify the danger. For example, if a car accident occurred in the driveway at night, place a portable LED lamp (1) on the guard rail or vehicle to alert the nearby vehicle to the light from the rear and blink the light. Alternatively, the portable lamp 1 may be placed on the road surface 50 m behind the accident vehicle, and the light may be blinked.

Also, in case of an emergency such as driving an emergency patient in a vehicle and going to a hospital, a portable LED lamp 1 is attached to a vehicle with a tape or the like, and then blinks to recognize an emergency situation to a nearby vehicle.

In addition, it can also serve as a lighting when repairing roads at night or repairing vehicles.

However, the portable LED lamp 1 according to the background art has a problem that it can not be attached to a surrounding structure such as a guardrail, a streetlight or a vehicle in order to notify a dangerous situation. In addition, there is a problem that it can not be mounted on a labcon. Therefore, there is a problem in that it can not perform its function because it is easily released by an external force in a state where it is placed on a structure, a vehicle or a labocon, and falls to the ground.

In particular, there is a problem that it is inconvenient to attach an emergency patient by tape or the like because it can not be easily attached to a vehicle in an emergency situation, such as going to a hospital and going to a hospital.

In addition, since the case 10 is assembled with screws, it is difficult to repair the substrate 30 and the LED 40 in the absence of a driver since the case 10 can be opened only by a driver.

Korean Patent Registration No. 10-1029536 (April 08, 2011)

The portable LED lamp according to the present invention is configured to be easily detachable to a surrounding structure, a vehicle, or a vehicle when a danger or an emergency is announced or light is irradiated. And the case is easily opened to provide convenience.

According to the present invention,

A case which is made of a transparent material and has an opening portion and is capable of opening and closing the opening portion, a substrate accommodated in the case, a battery mounted on the substrate, an LED lamp mounted on the substrate, A switch that is exposed through the case, and a magnet attached to a lower surface of the substrate and received in the case.

The LED and the switch are arranged side by side in the irradiation direction. The case is formed in a rectangular tube shape and the opening portion is directed to the irradiation direction. The cover is connected to one side of the opening portion to open and close the opening portion, A folded portion formed in the edge of the lid and folded to be inserted into the opening portion, and a through hole formed in the lid to expose the switch.

The LED includes a plurality of LED lamps, and includes an LED, a housing that houses the LED and opens toward an irradiation direction, and a lens that covers an opening of the housing, And a concave lens.

And a supporter detachably mounted on the lower surface of the case and configured to be mounted on the labocon,

The supporter includes a plate detachably attached to a lower surface of the case and an axis connected to a lower surface of the plate. Or a plate detachably attached to the lower surface of the case, and a spring plate attached to the lower surface of the plate, and the spring plate is formed in a shape of?.

The battery is a battery, and includes a solar cell module connected to the battery.

The alarm LED lamp according to the present invention has the following effects.

First, if the lower surface of the present invention is stuck to a structure or a vehicle such as a guard rail, it can be easily attached by the magnetic force of the magnet, and the stuck state can be maintained stably. have.

Second, since a plurality of convex lenses and a concave lens selectively irradiate light to a long distance as a convex lens, it can be confirmed from a long distance, and light is easily detected through a concave lens, so that it is easy to confirm it from a close range .

Thirdly, when the solar cell module is constructed, it can receive the solar light in the daytime and accumulate electricity in the battery, so that it can be used in the nighttime. Therefore, it is possible to solve the problem of purchasing a separate battery or charging the commercial power source have.

Fourthly, since the supporter is constituted, it is easy to identify the laver by attaching to the laver.

Fifth, the case has a rectangular tube shape and can easily open and close the lid with a bare hand without a tool such as a screwdriver, so that the internal structure can be easily repaired.

1 is a front view showing a portable LED lamp according to the background art;
2 is a perspective view showing an alarm LED lamp according to the present invention.
Fig. 3 is a perspective view showing a state in which the case is omitted in Fig. 2; Fig.
4 is a perspective view showing a case which functions as an alarming light for an alarm according to the present invention.
5 is a perspective view showing a state in which a lid of a case is opened as an alarm LED lamp according to the present invention.
6 is a perspective view showing a state in which a solar cell module is mounted as an alarm LED lamp according to the present invention.
7 is a perspective view showing a state in which the case is omitted in the state of FIG. 6;
FIG. 8 is a perspective view showing a state in which the warning lamp is attached to the guard rail according to the present invention. FIG.
Fig. 9 is an exploded perspective view showing a state in which a supporter for attaching to a labocon is detached from the lower surface of the case as an alarm LED lamp according to the present invention. Fig.
10 is a perspective view showing a state in which an alarm LED lamp according to the present invention is mounted on a labocon by using a supporter.
11 is a sectional view showing a state in which an alarm LED lamp according to the present invention is mounted on a labocon by a supporter according to another embodiment;

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

FIG. 2 is a perspective view showing an alarm LED lamp according to the present invention, FIG. 3 is a perspective view showing a state in which a case is omitted in FIG. 2, 6 is a perspective view showing a state in which a solar cell module is mounted as an alarm LED lamp according to the present invention. Fig. 5 is a perspective view showing a state in which a lid of a case is opened as an alarming LED lamp according to the present invention, Fig. 8 is a perspective view showing a state where the alarm lamp is attached to a guard rail according to the present invention. Fig. 9 is a perspective view showing an alarm according to the present invention FIG. 10 is an exploded perspective view showing a state in which a supporter for attaching to a labocon is detached from a lower surface of the case as an LED lamp for an alarm, FIG. 10 is a perspective view Perspective view showing a state of being mounted on rabakon, Figure 11 will be described with a cross-sectional view showing an LED lamp for the alarm according to the present invention mounted on rabakon by the supporter in accordance with another embodiment state.

A first embodiment of an alarm LED lamp 100 according to the present invention will be described with reference to FIGS. 2 to 5. FIG.

The case 110 is formed of a transparent material such that an opening 111 is formed and the opening 111 can be opened and closed and a substrate 120 accommodated in the case 110 is formed. In addition, a battery 140 mounted on the substrate 120 is formed, and an LED lamp 130 mounted on the substrate 120 is formed. The LED 140 is mounted on the substrate 120, 110, the exposed switch 170 is constructed. Further, a magnet 150 attached to a lower surface of the substrate 120 and accommodated in the case 110 is formed.

As shown in Fig. 4, the case 110 is made of a transparent material in a rectangular tube shape. For example, the film may be formed into a cylindrical shape by folding a transparent film. The case 110 is configured such that the opening 111 faces the irradiation direction so that the case 110 can be easily opened and closed and is connected to one side of the opening 111 so as to open and close the opening 111 A folded cover 113 is formed. Also, a folded portion 115 formed at the edge of the lid 113 and folded into the open portion 111 is formed. Therefore, the cover 113 can be folded to cover the opening 111, and the folded portion 115 can be inserted laterally into the opening 111, thereby covering the opening 111. The cover 113 can cover the opening 111, The opening portion 111 can be opened. A through hole 117 is formed in the lid 113 so that the switch 170 can be exposed through the case 110.

3, the LEDs 130 and the switches 170 are arranged side by side in the irradiation direction, and the through-holes 117 are configured so as to be aligned with the switch 170.

The LEDs 130 may include a plurality of LEDs 130 and may be configured to emit light toward the lid 113. The LED 130 or the like 130 includes a housing 131 that houses the LED and the LED and is opened toward the irradiation direction (lid direction). Further, a reflection shade for covering the opened side of the housing 131 is constituted, and a lens 135 is mounted to the housing 131 so as to cover the front of the reflection shade. The lens 135 is selected from a convex lens and a concave lens. In addition, the LED is configured to pass through the reflector so as to face the lens 135.

For example, when the LEDs 130 are formed of two lenses, one lens is made of a convex lens and the other lens is made of a concave lens. Accordingly, the convex lens allows the light to travel straight to a long distance, and the light spreads laterally through the convex lens, so that the light can be visually sensed at a long distance and at a short distance.

That is, the convex lens concentrates light, and it is possible to improve the straight distance of the light through the thickness of the convex lens and the distance between the convex lens and the LED. Further, since the concave lens can adjust the irradiation angle of the light through the distance between the thickness and the LED, the concave lens is configured so as to easily illuminate the near side by adjusting the degree of luminous intensity (spread of light).

In addition, terminals are formed on the inner side surface and the outer side surface of the housing 131, the terminals are connected to each other, and the terminals are connected to the substrate 120. Accordingly, the LEDs are connected to the terminals in the housing 131, so that the LEDs are connected to the substrate 120.

In addition, the LEDs 130 may be configured to blink according to the circuit configuration of the substrate 120, or may be configured to maintain a constantly on state.

The battery 140 may be a general battery or a battery. 6 and 7, the battery 140 may be constructed of a battery and a solar cell module 180 may be connected. At this time, the solar cell module 180 is configured to face upward to easily receive sunlight.

In addition, the supporter 160 is configured as shown in FIG. 9 so that the alarm lamp 100 according to the present invention can be mounted on the Labacon R. The supporter 160 includes a plate 161 detached from the lower surface of the case 110 and a shaft 163 connected to the lower surface of the plate 161 to be inserted into the laser bar R. Since the plate 161 is made of a magnetic material, it is configured to be detached by the magnet 150. Accordingly, as shown in FIG. 10, since the shaft 163 can be inserted into the Ravacon R, the present invention can be mounted on the Ravacon R.

11, a plate 165 is detachably mounted on the lower surface of the case 110, and a spring plate 167 attached to a lower surface of the plate 165 is formed do. Since the plate 165 is made of a magnetic material, it is configured to be detached by the magnet 150, and the spring plate 167 is formed in the shape of.. Therefore, when the spring plate 167 is narrowed and inserted into the upper portion of the Ravalon R, the inner surface of the spring plate 167 is expanded while being expanded inside the Ravalon R. Therefore, the present invention can be mounted on a Ravacon (R).

Hereinafter, the use of the present invention will be described.

As an example, when a traffic accident occurs on the road, the lower surface of the alarm LED lamp 100 according to the present invention is attached to the guard rail G. Then, it is attached by the magnetic force of the magnet (150). In this state, after the direction of the LED 130 or the like is adjusted to the rear direction, the switch 170 is operated to apply power. Then, the light of the LED 130 illuminates the rear of the accident point while passing through the lid 113, so that the driver of the traveling vehicle can visually confirm the accident situation. At this time, since some of the lenses 135 are convex lenses and the others are concave lenses, the light is irradiated to a long distance as a convex lens, so that it can be confirmed from a long distance and the light is easily detected through the concave lens, .

Alternatively, when the lower surface of the present invention is attached to the vehicle, the magnet 150 can easily be attached thereto. Therefore, when traveling in an emergency, it is possible to travel while informing the surrounding vehicle of an emergency. Therefore, there is an advantage that the present invention can be easily attached to or detached from a structure, a vehicle or a labacon (R), which is a magnetic body, so that there is an advantage that an emergency situation can be visually recognized easily.

Of course, even if it is not an emergency, it can be used as illumination for illuminating a desired place or object by attaching to a structure or a vehicle such as a guardrail (G) at night.

6 and 7, solar light is received through the solar cell module 180 during the daytime, and electricity is stored in the battery 140 to be used at night.

10, since the shaft 163 of the supporter 160 is fitted to the upper portion of the rabbit R, the present invention can be mounted on the rabbit R. Therefore, it is possible to prevent the present invention from being easily separated from the Ravacon (R).

11, when the spring plate 167 is formed on the supporter 160, the spring plate 167 is pinched and accommodated upwardly of the laser bar R. As shown in FIG. Then, the spring plate 167 is extended within the inside of the Ravacon R to prevent its deviation. Therefore, the present invention can be mounted on a Ravacon (R). Therefore, according to the present invention, since it can be easily mounted on the Ravacon (R), there is an advantage that identification of the Ravacon (R) is easy at night.

In addition, the case 110 may have a rectangular tube shape and can easily open and close the lid 113 with a bare hand without a tool such as a screwdriver. Therefore, there is an advantage that the internal configuration can be easily repaired.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but are intended to be illustrative, and thus the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Alarm LED lamp 110: Case
111: opening portion 113: cover
115: Bonding tape 117: Through-hole
120: substrate 130: LED
[0001] The present invention relates to a solar battery module, and more particularly, to a solar battery module,

Claims (6)

delete A case 110 formed of a transparent material and having an opening 111 and capable of opening and closing the opening 111,
A substrate 120 housed in the case 110,
A battery 140 mounted on the substrate 120,
An LED lamp 130 mounted on the substrate 120,
A switch 170 mounted on the substrate 120 and exposed through the case 110,
And a magnet (150) attached to a lower surface of the substrate (120) and received in the case (110)
The LEDs 130 and the switches 170 are arranged side by side in the irradiation direction,
The case 110 has a rectangular tube shape, and the opening 111 is configured to face the irradiation direction,
A lid 113 connected to one side of the opening 111 to open and close the opening 111,
A folded portion 115 folded at the edge of the cover 113 and inserted into the opening 111,
And a through hole (117) formed in the lid (113) to expose the switch (170). 3. The method of claim 2,
A plurality of LED lamps 130 (LED lamps)
With LED,
A housing 131 that houses the LED and opens toward the irradiation direction,
And a lens 135 covering the opened side of the housing 131,
Wherein the lens (135) is selected from a convex lens and a concave lens. The method of claim 3,
And a supporter 160 detachably mounted on the lower surface of the case 110 and configured to be mounted on the rabbit R,
The supporter (160)
A plate 161 detached from the lower surface of the case 110,
And an axis (163) connected to the lower surface of the plate (161). The method of claim 3,
And a supporter 160 detachably mounted on the lower surface of the case 110 and configured to be mounted on the rabbit R,
The supporter (160)
A plate 165 detached from the lower surface of the case 110,
And a spring plate (167) attached to a lower surface of the plate (165)
Wherein the spring plate (167) is formed in a 형 shape. The method according to claim 4 or 5,
The battery 140 is a battery,
And a solar cell module (180) connected to the battery.
KR1020150112693A 2015-08-10 2015-08-10 LED lamp for alarm KR101618860B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150112693A KR101618860B1 (en) 2015-08-10 2015-08-10 LED lamp for alarm

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Application Number Priority Date Filing Date Title
KR1020150112693A KR101618860B1 (en) 2015-08-10 2015-08-10 LED lamp for alarm

Publications (1)

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KR101618860B1 true KR101618860B1 (en) 2016-05-10

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101719271B1 (en) * 2017-01-05 2017-04-06 (주)프리즘 Multi-useful head lantern
KR102024842B1 (en) * 2018-09-20 2019-09-24 정승문 Handrail providing lighting and support assembly used to the same
KR102523062B1 (en) * 2022-09-05 2023-04-18 주식회사 원스케이프 Bolad structure combining artificial and natural stones
KR102539179B1 (en) * 2023-01-09 2023-06-01 주식회사 나눔컴퍼니 A safety lighting device and safety indication rod having the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030090895A1 (en) 2000-12-28 2003-05-15 Salvatore Guerrieri Portable light source and retainer for mounting
KR200347682Y1 (en) * 2004-01-08 2004-04-13 김재만 Portable warning light using solar
JP5026606B1 (en) * 2011-04-22 2012-09-12 セルフ株式会社 Street lighting fixtures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030090895A1 (en) 2000-12-28 2003-05-15 Salvatore Guerrieri Portable light source and retainer for mounting
KR200347682Y1 (en) * 2004-01-08 2004-04-13 김재만 Portable warning light using solar
JP5026606B1 (en) * 2011-04-22 2012-09-12 セルフ株式会社 Street lighting fixtures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101719271B1 (en) * 2017-01-05 2017-04-06 (주)프리즘 Multi-useful head lantern
KR102024842B1 (en) * 2018-09-20 2019-09-24 정승문 Handrail providing lighting and support assembly used to the same
KR102523062B1 (en) * 2022-09-05 2023-04-18 주식회사 원스케이프 Bolad structure combining artificial and natural stones
KR102539179B1 (en) * 2023-01-09 2023-06-01 주식회사 나눔컴퍼니 A safety lighting device and safety indication rod having the same

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