KR20240030371A - Circle flood light emitting diode of machinery space for ship and ship having the same - Google Patents

Abstract

The present invention includes a first LED module 110, which includes a first LED 111 and a first PWB 112 to emit emergency lighting, and a second LED 121 and a second PWB 122 to emit general lighting. The second LED module 120, the base plate 130, the cover frame 140 into which the base plate 130 is inserted and fixed, the diffusion plate 150 that diffuses the LED light, and is connected to the ship's emergency power grid to provide AC power. It converts to direct current power and supplies emergency power to the first LED module 110, and is connected to the first terminal box 160, which has an SMPS that operates the first LED module 110, and the first terminal box 160, An SMPS is placed at the top of the other side of the cover frame 140, is connected to the ship's general power grid, converts AC power to DC power, supplies general power to the second LED module 120, and operates the second LED module 120. It provides circle LED flood lighting for a ship's machine room, including a second terminal box 170 and a switch capable of switching whether or not the connection is made between the first terminal box 160 and the second terminal box 170.

Description

Marine machine room circle LED flood lighting and ships equipped with it {CIRCLE FLOOD LIGHT EMITTING DIODE OF MACHINERY SPACE FOR SHIP AND SHIP HAVING THE SAME}

The present invention relates to circle LED flood lighting for ship machinery rooms and ships equipped with the same. More specifically, it is used as emergency lighting and/or general lighting depending on the selection of the switch, and is operated simultaneously or separately through the emergency power grid and/or general power grid. This relates to circle LED flood lighting for marine machinery rooms that can minimize changes in illumination in the machinery room even in the event of an accident due to a power outage, etc., and a ship equipped with the same.

Recently, LED lamps with good power efficiency are being used to replace conventional fluorescent lamps, metal halide lamps, etc. LEDs are semiconductor devices that emit light when voltage is applied, and are smaller than conventional light sources, have a long lifespan, and are Because energy is converted directly into light energy, it consumes less power and has good efficiency.

In addition, the development of LED lighting is in full swing to replace indoor lighting such as fluorescent lighting, which consumes relatively high power, with LED.

Meanwhile, as illustrated in FIG. 1, the lighting installed in the ship's machine room is a shipyard standard ceiling lighting type, and the fluorescent lamp 12 is supported through a sheet 11 installed on the ceiling to irradiate light into the machine room space. .

However, the ceiling height of the machine room is very high, so a fairly long sheet 11 must be used to install lighting, which increases material costs and is inefficient, and the low-efficiency fluorescent lamp 12 makes it impossible to irradiate uniformly. There is a problem of increasing installation density.

In addition, the long sheet 11 makes it vulnerable to vibration, and it is difficult to reduce fuel efficiency due to the increased weight of the ship.

Accordingly, there is a need for technology for circle LED flood lighting in ship machinery rooms that can reduce material costs and installation costs by applying LED.

Korean Patent Publication No. 10-1808069 (Assembly structure of LED floodlight device, announced on December 14, 2017) Korean Patent Publication No. 10-1391584 (LED floodlight, announced on May 27, 2014)

The technical problem to be achieved by the idea of the present invention is to use it as emergency lighting and/or general lighting depending on the selection of the switch, and operate it simultaneously or separately through the emergency power grid and/or the general power grid, thereby changing the illumination of the machine room even in the event of an accident due to a power outage. The aim is to provide marine machine room circle LED flood lighting and a ship equipped with the same, which can minimize

In order to achieve the above-described object, an embodiment of the present invention includes a first LED module that includes a plurality of first LEDs that emit LED light and a first PWB that controls the first LEDs to emit emergency lighting; A second LED module that is formed separately on the same plane as the first LED module and includes a plurality of second LEDs that emit LED light and a second PWB that controls the second LEDs to emit general lighting; A base plate on which the first LED module and the second LED module are mounted; a cover frame into which the base plate is inserted and fixed; A diffusion plate coupled to the front of the base plate to diffuse the LED light; A first terminal box disposed on the cover frame, connected to the ship's emergency power network, converting AC power to DC power, supplying emergency power to the first LED module, and including an SMPS that operates the first LED module; And a second terminal including an SMPS disposed at the top of the other side of the cover frame, connected to the general power grid within the ship, converting AC power to DC power, supplying general power to the second LED module, and operating the second LED module. Provides circle LED flood lighting for a ship's machine room, including a box.

Here, the first terminal box is placed at the top of one side of the cover frame, the second terminal box is placed at the top of the other side of the cover frame, and the first terminal box and the second terminal box can be connected. .

At this time, it may further include a switch capable of switching whether or not the connection is made between the first terminal box and the second terminal box.

Specifically, through operation of the switch, when wiring between the first terminal box and the second terminal box, the first terminal box and the second terminal box are simultaneously controlled to connect to the ship's general power network or the ship's emergency power network. By driving both the first LED module and the second LED module to irradiate LED light, and when a disconnection occurs between the first terminal box and the second terminal box, the first LED module is driven by the emergency power network within the ship. LED light can be irradiated, and the second LED module can be driven by the ship's general power grid to irradiate LED light.

Additionally, a temperature sensor is formed on one side of the base plate, and when a temperature exceeding a certain level is detected by the temperature sensor, the brightness of the first LED module or the second LED module can be reduced.

In addition, a limit switch is formed on the other side of the base plate, and when the diffusion plate is separated from the base plate, the power supply to the first LED module or the second LED module can be blocked by the limit switch.

Here, the limit switch may be a button-type switch or a lever-type switch.

Additionally, the edge of the diffusion plate may be coupled to the edge of the base plate by bolting through a seal.

At this time, the diffusion plate may be formed in the shape of a convex lens.

Additionally, a plurality of radially spaced heat dissipation fins may be arranged on the cover frame.

In addition, it further includes a holder including a pair of arm brackets fixed to opposite sides of the cover frame and an arm rotatably coupled to the arm bracket, and the holder can be fixed to the upper part of the machine room.

In addition, the first LED module and the second LED module may be separately formed in the shape of a disk and placed inside and outside, respectively, on a concentric circle, or may be separately formed in the shape of a vertical bar or a horizontal bar and placed adjacent to each other.

Meanwhile, another embodiment of the present invention includes a plurality of machine rooms divided by purpose so that a plurality of devices for controlling the operation of a ship are arranged; A sheet fixed to the upper part of the machine room; and a ship machine room circle LED flood light fixed through the sheet, wherein the ship machine room circle LED flood light includes a plurality of first LEDs that emit LED light and a first PWB that controls the first LED to provide emergency lighting. A first LED module that radiates light, a plurality of second LEDs that are formed separately on the same plane as the first LED module, and a second PWB that controls the second LEDs, and a second LED that emits general lighting. A module, a base plate on which the first LED module and the second LED module are mounted, a cover frame into which the base plate is inserted and fixed, a diffusion plate coupled to the front of the base plate to diffuse the LED light, and the cover A first terminal box disposed on a frame, connected to the ship's emergency power network, converting AC power to DC power, supplying emergency power to the first LED module, and including an SMPS that operates the first LED module, and the cover. It is placed at the top of the other side of the frame, is connected to the ship's general power grid, converts AC power to DC power, supplies general power to the second LED module, and includes a second terminal box including an SMPS that operates the second LED module. Provides a ship equipped with circle LED flood lighting for a ship's machinery room.

Here, the marine machine room circle LED flood lighting further includes a holder including a pair of arm brackets fixed to opposite sides of the cover frame and an arm rotatably coupled to the arm bracket, and the holder It can be fixed to the upper part of the machine room through the sheet.

At this time, auxiliary equipment including a ceiling, air conditioner, converter, and pipe support provided at the upper part of the machine room may be further included, and the sheet may be fixed to the auxiliary equipment.

In addition, the first terminal box is disposed at the top of one side of the cover frame, the second terminal box is disposed at the top of the other side of the cover frame, and the first terminal box and the second terminal box may be connected. .

At this time, it may further include a switch capable of switching whether or not the connection is made between the first terminal box and the second terminal box.

Specifically, through operation of the switch, when wiring between the first terminal box and the second terminal box, the first terminal box and the second terminal box are simultaneously controlled to connect to the ship's general power network or the ship's emergency power network. By driving both the first LED module and the second LED module to irradiate LED light, and when a disconnection occurs between the first terminal box and the second terminal box, the first LED module is driven by the emergency power network within the ship. LED light can be irradiated, and the second LED module can be driven by the ship's general power grid to irradiate LED light.

Additionally, a temperature sensor is formed on one side of the base plate, and when a temperature above a certain level is detected by the temperature sensor, the brightness of the first LED module or the second LED module can be reduced.

In addition, a limit switch is formed on the other side of the base plate, and when the diffusion plate is separated from the base plate, the power supply to the first LED module or the second LED module can be blocked by the limit switch.

In addition, the first LED module and the second LED module may be separately formed in the shape of a disk and placed inside and outside, respectively, on a concentric circle, or may be separately formed in the shape of a vertical bar or a horizontal bar and placed adjacent to each other.

According to the present invention, depending on the selection of the switch, it is used as emergency lighting and/or general lighting and operates simultaneously or separately through the emergency power grid and/or general power grid to minimize changes in illumination in the machine room even in the event of an accident due to a power outage, etc., and to provide high efficiency. LED modules can be applied to flood lighting to optimize the machine room to reduce installation volume and shorten sheet length to reduce maintenance and material costs. Fuel efficiency can be improved by reducing the overall weight of the ship. LED modules can be controlled through temperature sensors. It has the effect of improving durability and preventing electric shock accidents during replacement and maintenance through the limit switch.

Figure 1 illustrates lighting for ships according to the prior art.
Figure 2 shows circle LED flood lighting for a ship's machinery room according to an embodiment of the present invention.
Figures 3 and 4 respectively illustrate exploded views of the marine machine room circle LED flood lighting of Figure 2.
Figure 5 illustrates the fixation of the holder for the circle LED flood lighting in the ship's machine room of Figure 2.
Figure 6 illustrates the machine room installation of the circle LED flood lighting in the ship's machine room of Figure 2.

Hereinafter, embodiments of the present invention having the above-described features will be described in more detail with reference to the attached drawings.

The marine machine room circle LED flood lighting according to an embodiment of the present invention includes a first LED (111) and a first PWB (112), a first LED module (110) and a second LED (121) that emit emergency lighting, A second LED module 120 that includes the second PWB 122 and emits general lighting, a base plate 130, a cover frame 140 into which the base plate 130 is inserted and fixed, and a diffusion plate that diffuses the LED light ( 150), a first terminal box (160) connected to the ship's emergency power network, converting AC power to DC power, supplying emergency power to the first LED module (110), and equipped with an SMPS that operates the first LED module (110). , is connected to the first terminal box 160, is placed at the top of the other side of the cover frame 140, and is connected to the general power grid within the ship to convert alternating current power to direct current power and supply general power to the second LED module 120. , a second terminal box 170 having an SMPS for manipulating the second LED module 120, and a switch capable of switching whether or not the connection is made between the first terminal box 160 and the second terminal box 170. The point is to use the first LED module 110 and/or the second LED module 120 as emergency lighting and/or general lighting depending on the selection of the switch.

Hereinafter, with reference to FIGS. 2 to 6, the marine machine room circle LED flood lighting of the above-described configuration will be described in detail as follows.

First, referring to FIGS. 3 and 4, the first LED module 110 has a plurality of first LEDs 111 arranged in a specific shape and emits LED light, supplies power to the first LED 111, and supplies power to the first LED 111. The first PWB (Printed Wiring Board) 112 that controls (111) is included, so that emergency lighting is provided to the machine room in the event of an emergency such as a power outage in the ship.

Next, referring to FIGS. 3 and 4, the second LED module 120 is electrically separated on the same plane as the first LED module 110, and is arranged in a specific shape to emit LED light. (121) and a second PWB (122) that supplies power to the second LED (121) and controls the second LED (121), so as to provide general lighting to the machine room under normal circumstances.

Meanwhile, as shown in FIG. 3, the above-mentioned first LED module 110 and second LED module 120 may be separately formed in a disc shape and placed inside and outside respectively on a concentric circle, but are not limited to this and may be arranged vertically. They may be separately formed in a bar shape or a horizontal bar shape and placed adjacent to each other.

Next, referring to Figures 3 and 4, the base plate 130 is a configuration on which the first LED module 110 and the second LED module 120 are insulated and seated, respectively. (120) is fixed to the cover frame (140).

In addition, as shown in FIG. 4, a temperature sensor 131 is formed on one side of the edge of the base plate 130, and when a certain temperature, for example, 85° C. or higher, is detected by the temperature sensor 131, the first terminal box By reducing the brightness of the first LED module 110 and/or the second LED module 120 to 50% through (160) and/or the second terminal box 170, the first LED module 110 and/or /Or it is possible to prevent shortening of the lifespan of the second LED module 120.

Next, referring to FIG. 4, the cover frame 140 is made of a metal material with good thermal conductivity and has a waterproof structure, and the base plate 130 is inserted into the inner space and fixed by bolting.

In addition, as illustrated in FIG. 2, a plurality of radially spaced heat dissipation fins 141 are arranged symmetrically on the outside of the cover frame 140, thereby reducing heat generation due to long-time driving.

In addition, the cover frame 140 includes a pair of arm brackets 142a fixed to opposite sides of the cover frame 140, and an arm 142b rotatably coupled to the arm bracket 142a. It further includes a holder 142, and the holder 142 may be fixed through a sheet 230 formed on the ceiling, air conditioner, converter, and/or pipe support of the machine room.

Here, although not shown, the holder 142 is composed of multiple stages and can be installed with a variable length depending on the installation environment, and a shock absorbing portion is formed between the holder 142 and the seat 230 to protect the holder from the seat 230. Durability can also be improved by alleviating transmitted vibrations.

Next, the diffusion plate 150 is bolted to the front of the base plate 130 to diffuse the LED light into the machine room, and a light guide film or light guide plate (not shown) is laminated on the inner surface of the diffuser plate 150. The LED light can also be guided to the diffusion plate 150 without diffuse reflection.

Meanwhile, as shown in FIG. 4, a limit switch 132 is formed on the other side of the base plate 130, and when the diffusion plate 150 is removed for replacement and/or maintenance, the bolt is released to remove the base plate 130. When the diffusion plate 150 is separated from the plate 130, the power supply to the first LED module 110 and/or the second LED module 120 is cut off by the limit switch 132 to prevent electric shock accidents. You can.

Here, the limit switch 132 may be a button-type switch or a lever-type switch, but is not limited thereto, and various types of limit switches capable of detecting separation of the diffusion plate 150 may be applied, and two or more limit switches may be applied on the circumference. It is formed symmetrically so that it can operate immediately even when partially opened in either direction.

Additionally, the edge of the diffusion plate 150 may be coupled to the edge of the base plate 130 by bolting through a seal.

In addition, the diffusion plate 150 is formed in the shape of a convex lens, so that the LED light emitted from the first LED module 110 and/or the second LED module 120 is uniformly diffused into the machine room to provide uniform illumination brightness for lighting installation. Points can be significantly reduced.

Next, referring to FIGS. 2 and 4, the first terminal box 160 is placed at the top of one side of the cover frame 140, and is connected to the ship's emergency power network according to classification regulations to convert AC power to DC power. Emergency power is supplied to the 1LED module (110), and an SMPS is provided to operate the 1st LED module (110).

Next, referring to FIGS. 2 and 4, the second terminal box 170 is electrically connected to the first terminal box 160 and is placed at the upper end of the other side of the cover frame 140, and is installed within the general ship according to classification regulations. It is connected to a power grid, converts AC power to DC power, supplies general power to the second LED module 120, and is equipped with an SMPS that operates the second LED module 120.

Here, as shown in FIG. 4, the first terminal box 160 and the second terminal box 170 are electrically connected by jumping the cable 172 inserted into the cable glands 161 and 171 formed on one side, respectively. Emergency power and general power can be supplied respectively through the cables 163 and 173 inserted into the cable glands 162 formed on the other side, and the wiring and disconnection of the cable can be easily changed according to the request of the ship owner.

Meanwhile, the switch (not shown) is configured to switch whether the connection or disconnection is between the first terminal box 160 and the second terminal box 170, and when the connection is made through operation of the switch, the first terminal box 160 ) and the second terminal box 170 are simultaneously controlled to drive both the first LED module 110 and the second LED module 120 by the ship's general power grid or the ship's emergency power network to irradiate LED light, so that the first LED module ( Both 110) and the second LED module 120 can be used.

On the contrary, when the wire is disconnected through the operation of the switch, the first LED module 110 is driven independently by the ship's emergency power network, and the second LED module 120 is driven independently by the ship's general power network to emit LED light respectively. You may.

Meanwhile, as shown in Figures 5 and 6, another embodiment of the present invention is arranged for each purpose so that the above-mentioned ship machine room circle LED flood lighting 100 and a plurality of devices 210 for controlling the operation of the ship are arranged. A plurality of machine rooms divided by a auxiliary facility 220, which includes a ceiling provided on the ceiling of the machine room, an air conditioner, a converter and/or a pipe support, and a circle LED flood light 100 fixed to the bottom of the auxiliary facility 220. Provided is a vessel equipped with a marine machinery room circle LED flood lighting, including a seat 230 supporting a .

Therefore, according to the configuration of the above-described embodiment, it is used as emergency lighting and/or general lighting depending on the selection of the switch, and is simultaneously operated through the emergency power grid and/or general power grid to prevent changes in illumination of the machine room even in the event of an accident due to a power outage, etc. By applying high-efficiency LED modules to flood lighting and optimizing them for the machine room, installation volume can be reduced and the sheet length can be shortened by more than half, which can reduce maintenance and material costs and improve fuel efficiency by reducing the overall weight of the ship. The durability of the LED module can be improved through a temperature sensor, and the limit switch can prevent electric shock accidents during replacement and maintenance.

The embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, so various equivalents may be substituted for them at the time of filing the present application. It should be understood that variations and variations may exist.

100: Circle LED flood lighting 110: 1st LED module
111: 1st LED 112: 1st PWB
120: 2nd LED module 121: 2nd LED
122: 2nd PWB 130: Base plate
131: temperature sensor 132: limit switch
140: Cover frame 141: Heat dissipation fin
142: Holder 150: Diffusion plate
160: Terminal 1 box 161,162: Cable gland
163 cable ` 170: Terminal 2 box
171: Cable gland 172,173: Cable
210: device 220: auxiliary equipment
230: sheet

Claims (21)

A first LED module that includes a plurality of first LEDs that emit LED light and a first PWB that controls the first LEDs to emit emergency lighting;
A second LED module that is formed separately on the same plane as the first LED module and includes a plurality of second LEDs that emit LED light and a second PWB that controls the second LEDs to emit general lighting;
A base plate on which the first LED module and the second LED module are mounted;
a cover frame into which the base plate is inserted and fixed;
A diffusion plate coupled to the front of the base plate to diffuse the LED light;
A first terminal box disposed on the cover frame, connected to the ship's emergency power network, converting AC power to DC power, supplying emergency power to the first LED module, and including an SMPS that operates the first LED module; and
A second terminal box disposed at the top of the other side of the cover frame, connected to the ship's general power grid, converting AC power to DC power, supplying general power to the second LED module, and including an SMPS that operates the second LED module. Containing ;
Marine machine room circle LED flood lighting. According to claim 1,
The first terminal box is disposed at the top of one side of the cover frame,
The second terminal box is disposed at the top of the other side of the cover frame,
Characterized in that the first terminal box and the second terminal box are wired,
Marine machine room circle LED flood lighting. According to claim 2,
Characterized in that it further comprises a switch capable of switching whether or not the connection is made between the first terminal box and the second terminal box.
Marine machine room circle LED flood lighting. According to claim 3,
Through the operation of the switch,
When wiring between the first terminal box and the second terminal box, the first terminal box and the second terminal box are simultaneously controlled to control the first LED module and the second LED by the ship's general power network or the ship's emergency power network. Drive all modules to emit LED light,
In case of disconnection between the first terminal box and the second terminal box, the first LED module is driven by the ship's emergency power network to emit LED light, and the second LED module is driven by the ship's general power network to emit LED light. Characterized by investigating,
Marine machine room circle LED flood lighting. According to claim 1,
A temperature sensor is formed on one side of the base plate, and when a temperature above a certain level is detected by the temperature sensor, the brightness of the first LED module or the second LED module is reduced.
Marine machine room circle LED flood lighting. According to claim 1,
A limit switch is formed on the other side of the base plate, and when the diffusion plate is separated from the base plate, the power supply to the first LED module or the second LED module is blocked by the limit switch,
Marine machine room circle LED flood lighting. According to claim 6,
The limit switch is characterized in that it is a button-type switch or a lever-type switch.
Marine machine room circle LED flood lighting. According to claim 1,
Characterized in that the edge of the diffusion plate is coupled to the edge of the base plate by bolting through a seal,
Marine machine room circle LED flood lighting. According to claim 8,
The diffusion plate is characterized in that it is formed in the shape of a convex lens,
Marine machine room circle LED flood lighting. According to claim 1,
Characterized in that a plurality of radially spaced heat radiation fins are arranged in the cover frame,
Marine machine room circle LED flood lighting. According to claim 1,
It further includes a holder including a pair of arm brackets fixed to opposite sides of the cover frame and an arm rotatably coupled to the arm brackets,
Characterized in that the holder is fixed to the upper part of the machine room,
Marine machine room circle LED flood lighting. According to claim 1,
The first LED module and the second LED module are separately formed in the shape of a disk and arranged inside and outside, respectively, on a concentric circle, or are separately formed in the shape of a vertical bar or horizontal bar and arranged adjacent to each other.
Marine machine room circle LED flood lighting. A plurality of machine rooms divided by purpose so that a plurality of devices that control the operation of the ship are placed;
A sheet fixed to the upper part of the machine room; and
Includes marine machine room circle LED flood lighting fixed through the sheet,
The marine machine room circle LED flood lighting is,
A first LED module that includes a plurality of first LEDs that emit LED light and a first PWB that controls the first LEDs to emit emergency lighting,
A second LED module that is formed separately on the same plane as the first LED module and includes a plurality of second LEDs that emit LED light and a second PWB that controls the second LEDs to emit general lighting;
A base plate on which the first LED module and the second LED module are mounted,
a cover frame into which the base plate is inserted and fixed;
A diffusion plate coupled to the front of the base plate to diffuse the LED light,
A first terminal box disposed on the cover frame, connected to the ship's emergency power network, converting AC power to DC power, supplying emergency power to the first LED module, and including an SMPS that operates the first LED module, and
A second terminal box disposed at the top of the other side of the cover frame, connected to the ship's general power grid, converting AC power to DC power, supplying general power to the second LED module, and including an SMPS that operates the second LED module. Including,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 13,
The marine machine room circle LED flood lighting is,
It further includes a holder including a pair of arm brackets fixed to opposite sides of the cover frame and an arm rotatably coupled to the arm brackets,
Characterized in that the holder is fixed to the upper part of the machine room through the seat,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 14,
It further includes auxiliary equipment including a ceiling, air conditioner, converter, and pipe support provided at the top of the machine room,
Characterized in that the sheet is fixed to the auxiliary equipment,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 13,
The first terminal box is disposed at the top of one side of the cover frame,
The second terminal box is disposed at the top of the other side of the cover frame,
Characterized in that the first terminal box and the second terminal box are wired,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 16,
Characterized in that it further comprises a switch capable of switching whether or not the connection is made between the first terminal box and the second terminal box.
Ship equipped with marine machinery room circle LED flood lighting. According to claim 17,
Through the operation of the switch,
When wiring between the first terminal box and the second terminal box, the first terminal box and the second terminal box are simultaneously controlled to control the first LED module and the second LED by the ship's general power network or the ship's emergency power network. Drive all modules to emit LED light,
In case of disconnection between the first terminal box and the second terminal box, the first LED module is driven by the ship's emergency power network to emit LED light, and the second LED module is driven by the ship's general power network to emit LED light. Characterized by investigating,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 13,
A temperature sensor is formed on one side of the base plate, and when a temperature above a certain level is detected by the temperature sensor, the brightness of the first LED module or the second LED module is reduced.
Ship equipped with marine machinery room circle LED flood lighting. According to claim 13,
A limit switch is formed on the other side of the base plate, and when the diffusion plate is separated from the base plate, the power supply to the first LED module or the second LED module is blocked by the limit switch,
Ship equipped with marine machinery room circle LED flood lighting. According to claim 13,
The first LED module and the second LED module are separately formed in the shape of a disk and arranged inside and outside, respectively, on a concentric circle, or are separately formed in the shape of a vertical bar or a horizontal bar and arranged adjacent to each other.
Ship equipped with marine machinery room circle LED flood lighting.