KR101615348B1 - Light Emitting Diode Explosion Prevention Lamp For Offshore Plant - Google Patents

Abstract

The present invention relates to an LED explosion-proof structure for an offshore plant, and more particularly, to a light emitting unit for illuminating an LED for an offshore plant, And an external power connection unit coupled to the support unit and connected to an external power source to supply power to the unit illumination unit.
The LED explosion-proof lamp for an offshore plant according to the present invention can block an explosive pressure, an explosive gas, water or the like which is externally operated from flowing into the inside, so that it can perform a lighting function safely even in a place where there is a risk of explosion of gas, It is easy to replace only the corresponding unit illumination part having a failure.

Description

{Light Emitting Diode Explosion Prevention Lamp for Offshore Plant for Offshore Plant}

More particularly, the present invention relates to an LED for an offshore plant which can be used in an atmosphere having a high luminous intensity, high air-tightness due to external impact, high flammability and high moisture content, Explosion and the like.

In general, explosive gases and explosive atmospheres due to vapors or dust are formed, and factories handling various flammable materials are areas of constant risk. These hazardous areas are classified into 0, 1, and 2 hazardous areas according to the hazardous conditions. Among these hazardous areas, 0 and 1 are always exposed to fire, explosion and heat. .

The electric apparatus and the lighting apparatus used in the place where the explosion danger atmosphere is formed are designed to prevent the spark generated by the electrical coupling from being released to the outside and to prevent the gas, Structure.

For example, an explosive gas can penetrate into a small gap caused by expansion and contraction caused by blinking of the lighting apparatus, and it is difficult to obtain explosion-proof effect even if the apparatus is closed. Therefore, in the prior art, explosion-proof lamps are those in which an inert gas is introduced so as not to be ignited even when an explosive gas is infiltrated by explosion gas. Generally, such explosion-proof lamps are generally used for lamps such as sodium lamps, halogen lamps, incandescent lamps, There is a problem that the size is large and the power consumption is large.

Particularly, when a discharge lamp such as sodium is used as a light source, a ballast is used to control an overcurrent, which is bulky, consumes a lot of power, and is exposed to an unstable state in a place where vibration is high.

In addition, when the light source and the stabilizer are not properly heat-dissipated, such an explosion-proof lamp has a problem that it can shorten its life due to overheating and cause a very dangerous situation. Therefore, such an explosion-proof lamp usually has a lamp having a glass bulb such as a high-pressure mercury lamp or a high-pressure sodium lamp, or a metal halide lamp, and has a pressure-resistant casing for preventing explosion of the lamp from secondary explosion in the event of spark due to overheating do.

The pressure-resistant casing has an internal pressure that resists pressure when an explosion occurs inside due to an electrical defect therein, and air tightness is required which is not likely to be ignited by external explosive gas through a joint surface, an opening or the like. A casing such as an explosion-proof casing has a structure in which a glass globe or a tempered glass is tightly bonded to a casing main body made of a metal and a protective net is formed outside the glass globe or tempered glass to protect it from an external impact.

Further, since the lamp is provided with a glass bulb, a glass globe or a tempered glass must have a sufficient inner space for accommodating the glass bulb and must have an internal pressure against the breaking force at the time of explosion of the bulb, The entire casing including the glass has a thick and large size explosion-proof structure.

On the other hand, when the LED is applied as a light source, there is almost no risk of sparking of the lamp due to heat. Therefore, if an explosion proof is formed by using an LED lamp, a strong pressure resistant structure is unnecessary.

Accordingly, although explosion-proofing using LEDs is conventionally proposed in Japanese Patent Application Laid-Open No. 10-0910539 and Published Utility Model Application No. 20-2011-0006648, the structure is complicated and the heat radiation performance is not supported, There was a problem.

It is an object of the present invention to provide an LED explosion-proof lamp for an offshore plant capable of performing a lighting function safely even in the presence of a risk of gas explosion.

It is another object of the present invention to provide an LED explosion-proof for an offshore plant which can rapidly dissipate heat generated from an LED, thereby prolonging the service life of the product and, of course, reducing replacement costs.

According to an aspect of the present invention, there is provided an LED explosion-proof lamp for an offshore plant comprising: a plurality of unit illumination units for receiving light to emit light; and a support unit for arranging and fixing the unit illumination units adjacent to each other, An angle adjustment unit rotatably coupled to the support unit so as to adjust a direction of light emitted from the unit illumination unit; an external power connection unit coupled to the support unit and connected to an external power source to supply power to the unit illumination unit, Wherein the unit illumination section includes a plurality of LED packages, and a substrate on which the LED packages are installed; A mounting portion having a mounting recess formed at a predetermined depth on the front surface thereof so as to mount the lighting module and a rear surface having a plurality of radiating fins extending a predetermined length rearward; A mounting portion extending from a lower portion of the mounting portion to be away from the mounting portion and having a built-in space formed therein; A switching mode power supply unit installed in a built-in space of the housing unit so as to convert the power supplied from the external power connection unit to the unit illumination unit according to the rating of the lighting module and supply the power to the lighting module; A tempered glass disposed in front of the lighting module; A sealing portion interposed between the lighting module and the tempered glass to seal a space between the lighting module and the tempered glass; And a cover portion coupled to the front surface of the mounting portion to closely contact the tempered glass toward the mounting portion and having a light transmitting window for allowing light emitted from the lighting module to pass therethrough.

The support portion includes a main support frame formed in a rectangular frame shape such that the unit illumination portions are disposed inside the bracket, a bracket formed on the main support frame for rotatably coupling the angle adjusting portion, And a coupling frame extending from the external power connection unit to connect the external power connection unit.

Wherein the mounting portion and the housing portion are formed to be separable and engageable with each other, an insertion hole is formed in the lower portion of the mounting portion, the insertion portion being inserted into the insertion hole of the mounting portion, And a body extending rearward from the flange portion to form the built-in space. The flange portion is formed to extend outwardly from the flange portion and is tightly fixed to the rear surface of the mounting portion through the coupling bolt.

According to the LED explosion-proof and the like for offshore plant according to the present invention, it is possible not only to prevent the spark due to the electric defect of the lighting module itself from being transmitted to the outside, but also to prevent the explosion pressure, explosive gas, So that it is possible to perform the lighting function safely even in the case where there is a risk of gas explosion.

In addition, according to the LED explosion-proof for marine plant according to the present invention, the heat generated in the lighting module can be quickly dissipated through the mounting part and the radiating fin, thereby prolonging the life of the product and reducing the replacement cost.

In addition, the LED explosion-proof lamps for offshore plants according to the present invention can combine and separate the unit illumination portions from the support portion, so that only the corresponding unit illumination portion having a failure can be replaced.

1 is a perspective view of an LED explosion-proofing lamp for a marine plant according to a first embodiment of the present invention;
Fig. 2 is an exploded perspective view of an LED explosion-proofing or the like for an offshore plant shown in Fig. 1. Fig.
3 is an exploded perspective view of the unit illumination part shown in Fig.
4 is a cross-sectional view of the unit illumination portion shown in Fig. 3;
5 is an exploded perspective view showing still another embodiment of the unit illumination part shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an LED explosion proof for an offshore plant according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show LED explosion-proof lamps 1 for an offshore plant according to a first embodiment of the present invention. 1 to 4, an LED explosion-proof light source 1 for an offshore plant includes a plurality of unit illumination units 100 that are supplied with power and emit light, and the unit illumination units 100 are arranged adjacent to each other and fixed An angle adjuster 300 rotatably coupled to the support 200 so as to adjust the direction of light emitted from the unit illumination unit 100; a support unit 200 coupled to the support unit 200; And an external power connection unit 400 connected to an external power source and supplying power to the unit illumination unit 100.

The unit illumination unit 100 includes an illumination module 110; A mounting portion 120; A housing 130; A switching mode power supply 140; A tempered glass 150; A sealing portion 160; And a cover portion 170.

The LED module includes a plurality of LED packages 111 and a substrate 112 on which the LED package 111 is mounted. The LED package 111 includes a substrate 112, And the substrate 112 is coupled to and detachable from the mounting portion 120 by a coupling member 115. [

The substrate 112 is coupled to the mounting portion 120 and includes a generally used printed circuit board (PCB). For example, when a metal printed circuit board (PCB) having a high heat dissipation effect is used as the substrate 112, heat generated from the LED package 111 can be effectively dissipated.

The mounting portion 120 is formed with a mounting recess 121 formed at a front surface thereof so as to mount the lighting module 110 and a plurality of radiating fins 123 extending rearward at a predetermined length are formed at the rear surface . A cover 170 to be described later is coupled to the front surface of the mounting portion 120. The cover 170 is coupled to the outer side of the front surface of the mounting portion 120 to prevent interference with the lighting module 110. [

The radiating fins 123 formed on the rear surface of the mounting portion 120 are spaced apart from each other along the longitudinal direction of the mounting portion 120 and are spaced apart from each other by a predetermined distance between the radiating fins 123 having the first length, Radiating fins 123 having a predetermined length are further formed.

The heat dissipation fins 123 are formed in the shape of a flat plate, and the material thereof includes aluminum, iron, tungsten having a high thermal conductivity, and an alloy in which they are mixed with other materials. The size of the heat dissipation fins 123 may be variously formed in consideration of the size of explosion.

The housing 130 is integrally formed with the mounting portion 120, but will be described separately from the mounting portion 120 for convenience of description. The accommodation portion 130 extends from the lower portion of the mounting portion 120 in a direction perpendicular to the mounting portion 120 so as to be remote from the mounting portion 120 and has a built-in space 130a therein.

The front side of the hermetic unit 130 is opened to be closed when the cover unit 170, which will be described later, is coupled to the front surface of the mounting unit 120, and the rear side is closed. A cable hole is formed on the lower side of the hermetic unit 130 so that a power cable extending from the external power connection unit 400 can pass therethrough and a cable gland 137 is coupled to the cable hole.

The housing 130 may be integrally formed with the mounting portion 120 as shown in the drawing. Alternatively, the housing 130 may be configured to separate or couple the mounting portion 120 and the housing portion 130 from each other.

The switching mode power supply unit 140 converts the power supplied from the external power connection unit 400 to the unit illumination unit 100 according to the rating of the lighting module 110, And is installed in a built-in space of the housing unit 130 and connected to the board 112 of the lighting module 110. [ The switching mode power supply unit 140 includes an electromagnetic interference filter unit, an AC-DC rectification unit, a DC-DC switch conversion unit, and an output unit.

The tempered glass 150 is disposed in front of the lighting module 110 so as to protect the lighting module 110 and includes a cover 170 which is disposed in a translucent window 171 of a cover 170, ) Through a fixing member 155. [0052] The tempered glass 150 is formed of a glass having high durability against external impact or high temperature while allowing light emitted from the lighting module 110 to pass therethrough.

The tempered glass 150 may include glass that is heated at a high temperature and rapidly quenched through compressed cooling air to compressively deform the surface portion. The tempered glass 150 has a flat plate shape and is spaced apart from the LED package 111 of the lighting module 110 by a predetermined distance.

The thickness of the tempered glass 150 can be variously formed in consideration of the internal pressure due to the explosion when the explosion occurs inside the explosion-proof glass. However, as the thickness of the tempered glass 150 increases, the durability to withstand the pressure of the explosion inside the explosion-proof lamp can be improved. However, since the weight of the explosion- proof bulb becomes heavy and the illuminance such as explosion- .

The sealing part 160 is interposed between the lighting module 110 and the tempered glass 150 to seal a space between the lighting module 110 and the tempered glass 150, The space between the lighting module 110 and the tempered glass 150 is occupied by separating the reinforcing glass 150 from the reinforcing glass 150, thereby reducing the volume. The sealing part 160 may be formed of a transparent material so that light can be transmitted.

The cover unit 170 is coupled to the front surface of the mounting unit 120 so as to closely contact the tempered glass 150 toward the mounting unit 120 and allow the light emitted from the lighting module 110 to pass therethrough. A light-transmitting window 171 is provided. A packing 180 for sealing is interposed between the cover portion 170 and the mounting portion 120.

The supporting unit 200 is a unit for connecting the unit illumination units 100 adjacent to each other and includes a main support frame 210 formed in a rectangular frame shape such that the unit illumination units 100 are disposed on the inner side, And a bracket 230 for coupling the angle adjuster 300. The angle adjusting unit 300 includes a bracket 230,

The main support frame 210 includes a pair of upper and lower horizontal frames 211 and 212 and a pair of left and right vertical frames 213 and 214 to guide the unit illumination unit 100 from outside the unit illumination units 100. [ Respectively.

The unit illumination portions 100 disposed inside the main support frame 210 are coupled to the main support frame 210 by the coupling bolts that are coupled to the main support frame 210 through the upper and lower portions of the main support frame 210, .

A bracket 230 is formed at the center of the left and right vertical frames 213 and 214 to connect the angle adjusting unit 300 to be described later. The bracket 230 has a first fastening hole 231, A second fastening hole 232 is formed.

The coupling frame includes an extension frame 221 extending a predetermined length rearward from the upper horizontal frame 211 of the main support frame 210 so as to be bent downward and an extension frame 221 extending from the left and right vertical frames And a connection frame 222 extending rearward from the brackets 230 provided on the support frames 213 and 214 and connected to the extension frames 221, respectively.

The angle adjusting unit 300 includes a rotation shaft 310 coupled to the first fastening hole 231, a handle 320 rotatably coupled to the bracket 230 by the rotation shaft 310, A tightening bolt 330 coupled to the second fastening hole 232 to fix the rotational position of the washer 320 and a flat washer 330 interposed between the rotating shaft 310 and the handle 320 and between the handle 320 and the bracket 230. [ 340).

The handle 320 is formed in a U shape and has first and second engaging holes 321 and 322 formed at both ends thereof to allow the rotating shaft 310 to pass therethrough, And a second engagement hole 322 is formed at the same distance with the first engagement hole 321 as a center.

When the handle 320 is rotated up and down with respect to the left and right vertical frames 213 and 214, the second engagement hole 322 does not interfere with the tightening bolt 330 in the engaged state in the bracket 230 As shown in FIG. That is, the second engaging hole 322 can rotate the handle 320 even when the fastening bolt 330 is not completely separated from the bracket 230.

When the tightening bolt 330 is loosely fastened to the bracket 230, interference is released to the handle 320 so that the handle 320 can freely rotate. When the tightening bolt 330 is fastened tightly, the handle 320 is rotated 320 so that the handle 320 is brought into close contact with the bracket 230.

The external power connection unit 400 is coupled to the coupling frame of the support unit 200 through a coupling bolt and draws power from an external power source to supply power to each of the unit illumination units 100.

The external power connection unit 400 includes a housing 410 fixed to a coupling frame, a main terminal unit (not shown) to which a main power cable C1 extending from an external power source is connected to the inside of the housing 410, A sub terminal unit (not shown) is connected to the sub power cable C2 extending from the switching mode power supply unit 140 provided in the illumination unit 100. The main terminal unit and the sub terminal unit are connected in parallel with each other.

The LED explosion-proof lamp 1 for an offshore plant according to the present invention as described above can not only prevent the spark from being transmitted to the outside caused by the electric defect of the lighting module 110 itself, Pressure or explosive gas or moisture can be prevented from entering the interior, so that the lighting function can be safely performed even where there is a risk of gas explosion.

According to the LED explosion-proof lamp 1 for an offshore plant according to the present invention, the heat generated in the lighting module 110 can be radiated quickly through the mounting portion 120 and the radiating fin 123, And, of course, replacement costs.

The LED explosion-proof lamp 1 for an offshore plant according to the present invention can combine and separate the unit illumination portions 100 from the support portion 200, and can replace only the corresponding unit illumination portion 100 having a failure .

5 shows another embodiment of the mounting portion and the housing portion of the LED explosion-proof lamp 1 for an offshore plant according to the present invention.

The mounting portion 120 and the hinge 130 can be separated from and coupled with each other. An insertion hole 125 is formed in the lower portion of the mounting portion 120 to penetrate the mounting portion 120, The insertion portion 131 is inserted into the insertion hole 125 of the mounting portion 120. The flange portion 132 is extended outward from the rear end of the insertion portion 131 and is fixed to the rear surface of the mounting portion 120 through the coupling bolt. And a body 133 extending rearward from the flange portion 132 to form a built-in space.

The mounting portion 120 is further provided with a guide protrusion 125a protruding by a predetermined length from the inner circumferential surface of the insertion hole 125 toward the center of the insertion hole 125. In the insertion portion 131, And an entry groove 131a is formed at a position corresponding to the guide groove 126 so that the guide projection 125a can enter.

The above-described LED explosion-proof lamps for offshore plants according to the present invention have been described with reference to the embodiments shown in the drawings. However, those skilled in the art will appreciate that various modifications and variations It will be appreciated that other embodiments are possible.

Therefore, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

100:
110: Lighting module
120:
130:
140: Switching mode power supply
150: tempered glass
160:
170:
200:
210: main support frame
221: Extension frame
222: connection frame
230: Bracket
300:
310:
320: Handle
330: tightening bolt
340
400: External power connection
410: Housing

Claims (3)

A plurality of unit illumination units that receive power and emit light;
A supporting portion for arranging and fixing the unit illumination portions adjacent to each other;
An angle adjusting unit rotatably coupled to the supporting unit so as to adjust a direction of light emitted from the unit illumination unit;
And an external power connection unit coupled to the support unit and connected to an external power source to supply power to the unit illumination unit,
The unit illumination unit includes a plurality of LED packages, and a substrate on which the LED packages are installed; A mounting portion having a mounting recess formed at a predetermined depth on the front surface thereof so as to mount the lighting module and a rear surface having a plurality of radiating fins extending a predetermined length rearward; A mounting portion extending from a lower portion of the mounting portion to be away from the mounting portion and having a built-in space formed therein; A switching mode power supply unit installed in a built-in space of the housing unit so as to convert the power supplied from the external power connection unit to the unit illumination unit according to the rating of the lighting module and supply the power to the lighting module; A tempered glass disposed in front of the lighting module; A sealing portion interposed between the lighting module and the tempered glass to seal a space between the lighting module and the tempered glass; And a cover portion coupled to a front surface of the mounting portion to closely contact the tempered glass toward the mounting portion and having a light transmitting window for allowing light emitted from the lighting module to pass therethrough,
Wherein the mounting portion and the housing portion are formed to be separable and engageable with each other,
An insertion hole passing through the mounting portion is formed in a lower portion of the mounting portion,
A flange portion extended outward from a rear end of the insertion portion and fixedly attached to a rear surface of the mounting portion through an engagement bolt; and a flange portion extending rearward from the flange portion, And a body forming a built-in space,
The mounting portion is formed with a guide protrusion protruding by a predetermined length from the inner circumferential surface of the insertion hole toward the center of the insertion hole,
And an insertion groove is formed in the insertion portion to allow the guide protrusion to enter the position corresponding to the guide protrusion. The method according to claim 1,
The support portion includes a main support frame formed in a rectangular frame shape such that the unit illumination portions are disposed inside the bracket, a bracket formed on the main support frame for rotatably coupling the angle adjusting portion, And an engaging frame extending from the outer frame and extending to connect the external power connection part.
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