KR20120034926A - Illumination apparatus for explosion proof - Google Patents

Abstract

PURPOSE: An explosion-proof lighting device is provided to eliminate occurrence possibility of sparks at the contact point of a connector by automatically separating the connector before eliminating a cover. CONSTITUTION: An explosion-proof lighting device(1) comprises a lighting unit(10) creating light by including a light source, and a power supply unit(20) supplying a power source to the lighting unit. The lighting unit and the power supply unit are accepted in an independent case. The lighting unit and the power supply unit respectively have a unique explosion proof construction. An internal explosive space is minimized by separating the lighting unit and the power supply unit. The lighting unit creates the light by receiving the power source from the power supply unit. The lighting unit forms an outer tube by a cover(110) and housing(160).

Description

Explosion proof lighting equipment {Illumination apparatus for explosion proof}

The present invention relates to an explosion-proof lighting device, and more particularly to the connection power is cut off before opening the cover of the lighting so that the flame does not propagate outside the lighting device even if an explosion occurs due to an electrical spark or the like inside the lighting device. It relates to an explosion-proof lighting device.

In areas where there is a possibility of explosion due to flammable substances in the air such as dust, steam, gas, etc., special explosion-proof lighting devices are used instead of general lighting. For example, use of explosion-proof lighting devices is mandatory in places where there is a risk of explosion, such as chemical plants, oil refineries, and gas storage facilities that handle flammable materials. Electricity used in lighting equipment is likely to cause sparks, and when used in a place exposed to flammable materials, the use of general lighting is limited due to the high risk of explosion.

In general, the explosion-proof lighting device has a sealed structure in which a light source and a power supply are built in a strong housing so that the electric device is not exposed to the outside of the housing. The explosion-proof lighting device is made of a material having sufficient rigidity to prevent the spread of flame to the outside even if an explosion occurs inside the housing, and to prevent the housing from being damaged by the explosion, and each component is firmly Combined. However, when disassembling the explosion-proof lighting device for the replacement or maintenance of the lamp, the electrical devices inside the housing can not only be exposed to the outside of the housing, it is exposed to the risk of explosion.

When disassembling the explosion-proof lighting device, in order to prevent the explosion, the power supplied from the outside must be cut off beforehand. However, there is a risk of explosion when the explosion-proof lighting device is to be disassembled in a situation where the power supply is not easily cut off, or when an internal battery remains.

Therefore, when disassembling the explosion-proof lighting device, there is a need for a structure that can automatically cut off the power to reduce the risk of explosion.

The technical problem to be achieved by the present invention is to provide an explosion-proof lighting device so that the connection power is cut off before opening the cover of the light so that the flame does not propagate to the outside of the lighting device even if an explosion occurs due to an electrical spark or the like inside the lighting device. I would like to.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Explosion-proof lighting device according to an embodiment of the present invention for achieving the above technical problem, the light source unit for generating light, and a light source unit accommodating groove for receiving the light source unit is formed therein, the housing is formed with a first hinge portion on one side And a transparent plate formed at a central portion thereof, a second hinge portion hinged to the first hinge portion on one side, and an edge portion protruding toward the housing along an outer portion of the transparent plate and slidingly coupled to the housing. A first connector coupled to the cover, the housing and electrically connected to the power supply unit; and the cover is electrically connected to the light source unit and coupled to the cover, the first connector being connected to the first connector when the gap between the cover and the housing is narrow. A second connector that is separated from the first connector when the distance between the housing and the housing increases And wherein when the cover is separated from the housing, the first connector and the second connector are separated before the edge portion is separated from the housing, wherein either one of the first hinge portion and the second hinge portion A hinge shaft, and the other includes a ring portion surrounding the hinge shaft and rotating about the hinge shaft, wherein the hinge shaft and the ring portion are spaced apart from each other when the cover is coupled to the housing, and the cover is separated from the housing. The hinges are formed in contact with each other.

The ring portion may form a closed curve in which a hinge hole in which the hinge axis is located is formed at a central portion thereof, and the hinge hole may be elongated in a direction in which the edge portion slides.

One of the first connector and the second connector may include a protruding connection rod, and the other may include an insertion hole into which the connection rod is inserted.

The light source unit may include at least one LED and a printed circuit board on which the LEDs are arranged, and any one of the first connector and the second connector may be fixed to the printed circuit board.

The housing may further include a heat radiation fin formed on the outside.

The power supply unit is coupled to the housing, and coupled to the first body, the first body includes a battery and an AC / DC converter therein, and continuously protrudes toward the first body along an edge and is connected to the first body. A second body including a second edge portion sliding in contact with the second body; a third connector coupled to the first body; and the second body coupled to the second body to narrow the distance between the first body and the second body. And a fourth connector connected to a third connector and separated from the third connector when the distance between the first body and the second body is increased, when the first body is separated from the second body. The third connector and the fourth connector may be separated before the second edge portion is separated from the first body.

The first body and the second body are hinged to each other including a third hinge portion and a fourth hinge portion, one of the third hinge portion and the fourth hinge portion includes a hinge axis, the other And a ring portion surrounding the hinge axis and rotating about the hinge axis, wherein the hinge axis and the ring portion are spaced apart from each other when the first body is coupled to the second body, and the first body is separated from the second body. The hinge structure can be formed in contact with each other.

The third connector may be connected to the battery, and the fourth connector may be connected to the AC / DC converter.

The third connector may be connected to the AC / DC converter, and the fourth connector may be connected to an AC power supply.

The power supply unit may further include at least one status display lamp that displays a state of the battery on one side of the first body and the second body.

The state display lamp may include a plurality of charge amount display lamps for displaying the remaining amount of the battery according to the number of lamps that are turned on.

The explosion-proof lighting device according to the present invention eliminates the possibility that sparks are generated at the contacts of the connector by automatically disconnecting the connector before the cover is removed, even when performing a disassembly operation in a dangerous place where there is a risk of explosion.

In addition, it is not a way to cut off the power between the light source and the power supply device through a separate process, and at the same time, the power supply is automatically cut off at the same time as the disassembly work so that the work can be easily performed.

1 is a perspective view of an explosion-proof lighting device according to an embodiment of the present invention.
2 is an exploded perspective view of the explosion-proof lighting device of FIG.
3 is a cross-sectional view taken along line AA of the explosion-proof lighting device of FIG.
4A to 4D are schematic cross-sectional views illustrating a disassembling process of a lighting unit included in the explosion-proof lighting device of FIG. 1.
5 is a front view of a state display window included in the explosion-proof lighting device of FIG.
6 is a cross-sectional view of a lighting apparatus according to another embodiment of the present invention.
7 is a cross-sectional view of a lighting apparatus according to another embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

1 to 5, the explosion-proof lighting device according to an embodiment of the present invention will be described in detail.

1 is a perspective view of an explosion-proof lighting device according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the explosion-proof lighting device of Figure 1, Figure 3 is a explosion-proof lighting device of FIG. It is a cross section.

Explosion-proof lighting device 1 according to an embodiment of the present invention includes a lighting unit 10 for generating light, including a light source, and a power supply unit 20 for supplying power to the lighting unit 10. The lighting unit 10 and the power supply unit 20 are housed in a separate independent case and fixed. That is, the lighting unit 10 and the power supply unit 20 each have their own explosion-proof structure and are sealed, and by separating the lighting unit 10 and the power supply unit 20, the explosion space inside can be minimized. Hereinafter, each component of the lighting unit 10 and the power supply unit 20 will be described in detail with reference to the drawings.

First, the lighting unit 10 is a part that generates power by receiving power from the power supply unit 20, and forms an exterior with the housing 160 and the cover 110, and the first connection with the light source units 140 and 141 therein. The space in which the modules 171 and 172 are accommodated is formed. The light source units 140 and 141 are configured by LEDs 141 arranged on one surface of the printed circuit board 140. On the opposite side of the printed circuit board 140, the second connector 172 constituting the first connection modules 171 and 172 protrudes. The second connector 172 is a connection rod penetrating the printed circuit board 140 and is inserted into the first connector 171 to be electrically connected. The second connector 172 is fixed to the inside of the cover 110 together with the light source parts 140 and 141, and the first connector 171 is fixed to the inside of the housing 160, and a power supply unit outside the housing 160. It receives the power from the 20 to supply to the light source unit 140, 141 through the second connector 172. The first connector 171 is formed with an insertion hole into which a connecting rod, which is the second connector 172, is inserted to allow electrical connection. That is, the second connector 172 is inserted into the insertion hole of the first connector 171 and connected to an internal terminal (not shown) to make an electrical connection, and when disconnected from the internal terminal of the insertion hole, the electrical connection is broken. You lose. The electrical separation point between the second connector 172 and the first connector 171 may be made in the insertion hole, and may be a point at which the connection rod is separated from the insertion hole.

Meanwhile, as shown in FIG. 3, the first connector 171 and the second connector 172 constituting the first connection modules 171 and 172 are fixed to the housing 160. The two connectors 172 are not limited to those fixed to the cover 110 and may be interchanged with each other. Further, the first connection modules 171 and 172 are not limited to the structure of connecting by using the connection rod and the insertion hole, and various connectors are connected when the gap between the two connectors is narrowed and disconnected when the distance between the two connectors is increased. The format may be used.

One side surface of the light source unit 140 or 141 is coupled to the reflector 130 having a hole through which the LED 141 is exposed. The reflector 130 may reflect the light emitted from the LED 141 to the outside of the cover 110 to increase the efficiency of the light. The reflective plate 130 may be formed in the form of a metal plate or a thin sheet formed with a reflective surface.

The housing 160 is a part which holds the skeleton of the lighting unit 10 and is formed of a material that maintains strength suitable for the explosion-proof standard. The housing 160 may be formed in a heat dissipation structure so as to maintain the skeleton of the lighting unit 10 and to quickly release the heat of the light source units 140 and 141. That is, the housing 160 itself may constitute one heat sink, and a plurality of heat dissipation fins may be formed on the outside to quickly dissipate heat. The housing 160 accommodates the light source units 140 and 141 and the first connection modules 171 and 172 in an opening opened to one side, and the opened area is closed by the cover 110.

The cover 110 is formed in a ring shape in which an open window through which light can be transmitted is formed. The central portion of the cover 110 is sealed by the transparent plate 120 so that light can be transmitted while maintaining the explosion-proof structure. The transparent plate 120 refers to a plate formed of a material having a rigidity capable of maintaining an explosion-proof structure and transmitting light, and may be, for example, tempered glass or reinforced plastic.

Meanwhile, the cover 110 includes a first edge portion 111 protruding toward the housing 160 along the outer portion of the transparent plate 120. The first edge portion 111 is formed in a ring shape along the outer portion of the cover 110 and is in sliding contact with the side wall of the housing 160. Here, the sliding coupling means that the first edge portion 111 is coupled while maintaining a close contact with the housing 160, when the cover 110 is coupled to the housing 160, the first edge portion ( 111 means a structure that can always be in close contact with the housing 160 to maintain the internal airtight.

The protruding height of the first edge portion 111 may be greater than the length of the second connector 172 inserted into the first connector 171, whereby the second connector 172 may be completely separated from the first connector 171. The airtight is maintained between the cover 110 and the housing 160 until the explosion is made in the interior, thereby preventing the flame from spreading outside the lighting unit 10. O-ring 150 may be inserted between the cover 110 and the housing 160 to increase the airtightness.

The cover 110 and the housing 160 each include a first hinge portion 112 and a second hinge portion 161, and the first hinge portion 112 and the second hinge portion 161 are the cover 110. And hinge the housing 160. Specifically, the first hinge portion 112 includes a ring portion 113 at one end, and the second hinge portion 161 includes a hinge shaft 162 at the center portion. The ring portion 113 may be formed in a shape surrounding the hinge shaft 162 so as to rotate about the hinge shaft 162. The first hinge portion 112 protrudes from one end of the cover 110 and has a curved shape about the hinge axis 162. At this time, when the cover 110 is fully coupled to the housing 160, the ring portion 113 is formed to be spaced apart from the hinge shaft 162, the first edge portion 111 of the cover 110 is the housing When separated from 160, the ring part 113 may contact the hinge shaft 162 so that the cover 110 may rotate about the hinge shaft 162.

The power supply unit 20 includes a battery 230 and an AC / DC converter 220 therein to apply power to the lighting unit 10. The AC / DC converter 220 converts alternating current into direct current and directly supplies the direct current power to the lighting unit 10, or supplies the direct current power to the battery 230. In this case, the AC / DC converter 220 and the battery 230 are connected to the second connection modules 281 and 282, and the AC / DC converter 220 and the AC power supply unit (not shown) are connected to the third connection module ( 283, 284).

Referring to the overall configuration of the power supply unit 20 in detail, the power supply unit 20 is the first body 210 and the second body 240 forms an exoskeleton, the first body 210 and the second body 240 of The battery 230 includes a battery 230, an AC / DC converter 220, second connection modules 281 and 282, and third connection modules 283 and 284. The first body 210 is coupled to the housing 160 of the lighting unit 10 by a coupling nut 215, and the fourth connector 282 and the third connection module 283 of the second connection module 281 and 282. , 284 of the sixth connector 284 may be coupled, the second body 240 has a battery 230 is coupled therein, and the third connector 281 of the second connection module (281, 282) The fifth connector 283 of the third connection modules 283 and 284 may be coupled to each other, and the connection portion 260 may be coupled to connect an external AC power supply unit or an adjacent explosion-proof lighting device to each other. The second connection module 281 and 282 and the third connection module 283 and 284 have a structure including a connection rod and an insertion hole as described in the first connection module 171 and 172, and the first body 210. When the and the second body 240 are separated from each other, the second connection module 281 and 282 and the third connection module 283 at least before the internal airtight of the first body 210 and the second body 240 are released. , 284 are each electrically disconnected to cut off the electricity.

Meanwhile, the second edge portion 211 protrudes continuously toward the second body 240 at the edge portion of the first body 210. Like the first edge portion 111, the second edge portion 211 is in contact with the second body 240 to maintain the internal airtightness of the power supply 20. In this case, each of the first body 210 and the second body 240 may include a third hinge portion 212 including a ring portion 213 and a fourth hinge portion 241 including a hinge shaft 242. Including hinges to each other. The hinge coupling of the first body 210 and the second body 240 is substantially the same as the hinge coupling between the cover 110 and the housing 160 described above.

Each of the first body 210 and the second body 240 includes flange coupling parts 211 and 243 formed by protruding one side thereof, and may bolt the first body 210 and the second body 240 to each other. have. Although not shown, the cover 110 and the housing 160 of the lighting unit 10 may be coupled in the same manner. The lighting unit 10 and the power supply unit 20 coupled as described above may be fixed at various positions by the fixing piece 270 formed at one end of the second body 240.

Hereinafter, the disassembling process of the lighting unit included in the explosion-proof lighting apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 4A to 4D.

4A to 4D are schematic cross-sectional views illustrating a disassembling process of a lighting unit included in the explosion-proof lighting device of FIG. 1.

First, FIG. 4A illustrates a structure in which the cover 110 is completely coupled to the housing 160 and the first connector 171 and the second connector 172 therein are completely sealed. Specifically, the cover 110 is fully coupled to the housing 160, so that the first edge portion 111 of the cover 110 is completely inserted into and coupled to the inner wall of the housing 160 and the second connector 172. ) Is completely inserted into the first connector 171. In addition, the ring portion 113 of the first hinge portion 112 is spaced apart from the hinge shaft 162 of the second hinge portion 161.

4B illustrates a state in which the second connector 172 is separated from the first connector 171. In this case, the cover 110 is not completely separated from the housing 160, and the first edge portion 111 of the cover 110 is in contact with at least a portion of the inner wall of the housing 160 so that the light source portions 140 and 141 are contacted with each other. And the first connection modules 171 and 172 are kept closed with the outside. As described above, since the protruding height of the first edge portion 111 is longer than the length of the second connector 172 inserted into the first connector 171, the second connector 172 is separated from the first connector 171. Even when the first frame 111 is separated, the first edge portion 111 may maintain sliding engagement with the housing 160. In other words, the cover 110 is slidably coupled to the housing 160 to be separated by moving in parallel. Therefore, even if a spark is generated in the process of separating the second connector 172 from the first connector 171 to cause an explosion, the explosion flame inside the cover 110 and the housing 160 may not propagate to the outside.

Subsequently, referring to FIG. 4C, the first edge portion 111 of the cover 110 is completely separated from the housing 160, and the ring portion 113 of the first hinge portion 112 is the second hinge portion 161. It is caught by the hinge shaft 162 of the). In this case, the first connector 171 and the second connector 172 are exposed to the outside of the lighting unit 10 in a state completely separated from the power source. Therefore, there is no possibility of a separate explosion in this process.

Finally, referring to FIG. 4D, the cover 110 may be completely opened about the hinge axis 162.

In the above, the disassembling process of the cover 110 and the housing 160 of the lighting unit 10 has been described with reference to FIGS. 4A to 4D, but the first body 210 and the second body 240 of the power supply unit 20 are described. Since the decomposition process may also be applied in the same manner, a detailed description thereof will be omitted.

5 is a front view of a state display window included in the explosion-proof lighting device of FIG.

The status display window 250 includes a plurality of status display lamps 251 and 252 therein. The status display lamps 251 and 252 function to display the status of the power supply unit 20. The status display lamps 251 and 252 display the control state display lamp 251 indicating the control state of the power supply unit 20 and the remaining amount of the battery 230. The charging amount indicator lamp 252 may be included. The control state display lamp 251 may indicate various states, such as whether there is an external power supply, an abnormality of the power supply unit 20 and the lighting unit 10, a warning about an internal temperature of the lighting device, and the like. In addition, the charge amount display lamp 252 may display the charge amount of the current battery using a plurality of lamps.

Hereinafter, an explosion-proof lighting device according to another embodiment of the present invention will be described in detail with reference to FIG. 6.

6 is a cross-sectional view of a lighting apparatus according to another embodiment of the present invention.

Explosion-proof lighting device according to another embodiment of the present invention except for the shape of the first hinge portion 112 ′ and the third hinge portion 212 ′ of the first body 210 attached to the cover 110. It is substantially the same as the explosion-proof lighting device of the previous embodiment. Therefore, the description of the same configuration that overlaps with the above-described embodiment is omitted.

The first hinge portion 112 ′ includes a ring portion 113 ′ forming a closed curve so that a hinge hole is formed at the center portion of the hinge shaft 162. The ring portion 113 ′ may be completely coupled to the hinge shaft 162 to prevent the cover 110 from being separated from the housing 160 while the cover 110 is completely open. Such a hinge hole may be formed long in the direction in which the first edge portion 111 slides.

In addition, the third hinge portion 212 ′ of the first body 210 may include a ring portion 113 ′ forming a closed curve in which a hinge hole is formed, similarly to the first hinge portion 112 ′.

Hereinafter, an explosion-proof lighting device according to another embodiment of the present invention will be described in detail with reference to FIG. 7.

7 is a cross-sectional view of the lighting unit included in the lighting apparatus according to another embodiment of the present invention.

The lighting lamp 10a included in the explosion-proof lighting device according to another embodiment of the present invention has a structure in which the first edge portion 111a of the cover 110 covers the outside of the housing 160a. Specifically, the housing 160a includes a third edge portion 165 protruding toward the cover 110a, and the cover 110a defines the first edge portion 111a protruding toward the housing 160a. Include. The third edge portion 165 is located inside the first edge portion 111a of the cover 110a and is in sliding engagement with the first edge portion 111a.

Meanwhile, the sliding engagement of the first edge portion 111a and the third edge portion 111a is maintained until the first connector 171 and the second connector 172 are completely separated.

In addition, the housing 160a includes a first hinge portion 161a including a ring portion 162a coupled to a central portion of the hinge shaft 113a and forming a closed curve, and the cover 110a includes the hinge shaft 113a. The formed second hinge portion 112a.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: explosion-proof lighting device 10: lighting unit
20: power supply unit 110: cover
111: first edge portion 112: first hinge portion
113: ring portion 120: transparent plate
130: reflector 140: printed circuit board
150: O-ring 160: housing
161: second hinge portion 162: hinge axis
171: first connector 172: second connector
210: first body 211: second edge portion
213: ring portion 215: fixing nut
220: AC / DC converter 230: battery
240: second body 241: fourth hinge portion
242: hinge axis 250: status display window
260: connecting portion 270: fixing piece

Claims (11)

A light source unit generating light;
A housing having a light source unit accommodating groove accommodating the light source unit and having a first hinge portion at one side thereof;
A cover including a transparent plate formed at a central portion thereof, a second hinge portion hinged to the first hinge portion at one side, and an edge portion protruding toward the housing along an outer portion of the transparent plate and slidingly coupled to the housing;
A first connector coupled to the housing and electrically connected to the power supply unit; And
A second connector electrically connected to the light source unit and coupled to the cover, the second connector being connected to the first connector when the gap between the cover and the housing is narrow and being separated from the first connector when the gap between the cover and the housing is increased Including,
When the cover is separated from the housing, the first connector and the second connector are separated before the edge portion is separated from the housing,
One of the first hinge portion and the second hinge portion includes a hinge axis, and the other includes a ring portion surrounding the hinge axis and rotating about the hinge axis, wherein the hinge axis and the ring portion have the cover. The explosion-proof lighting device is coupled to the housing is spaced apart from each other and the cover is separated from the housing to contact each other to form a hinge structure.
The method of claim 1,
The ring portion forms a closed curve formed with a hinge hole in which the hinge axis is located in the center portion, the hinge hole is formed in the elongated direction in which the edge portion sliding movement. The method of claim 1,
At least one of the first connector and the second connector includes a protruding connection rod, and the other one includes an insertion hole into which the connection rod is inserted. The method of claim 3,
The light source unit includes at least one LED and a printed circuit board on which the LEDs are arranged, wherein any one of the first connector and the second connector is fixed to the printed circuit board. The method of claim 1,
The housing is explosion-proof lighting device further comprises a heat radiation fin formed on the outside. The method according to claim 1,
The power supply unit is coupled to the housing,
A first body;
A second body including a battery and an AC / DC converter coupled to the first body, the second body including a second edge portion continuously protruding toward the first body along the edge and slidingly coupled to the first body;
A third connector coupled to the first body;
Is coupled to the second body is connected to the third connector when the gap between the first body and the second body is narrow, and is separated from the third connector when the distance between the first body and the second body increases Including a fourth connector,
When the first body is separated from the second body, the third connector and the fourth connector is separated before the second edge portion is separated from the first body. The method of claim 6,
The first body and the second body are hinged to each other including a third hinge portion and a fourth hinge portion, one of the third hinge portion and the fourth hinge portion includes a hinge axis, the other And a ring portion surrounding the hinge axis and rotating about the hinge axis, wherein the hinge axis and the ring portion are spaced apart from each other when the first body is coupled to the second body, and the first body is separated from the second body. Explosion-proof lighting device forming a hinge structure in contact with each other. The method of claim 6,
And the third connector is connected to the battery, and the fourth connector is connected to the AC / DC converter. The method of claim 6,
And the third connector is connected to the AC / DC converter, and the fourth connector is connected to an AC power supply. The method according to claim 6,
The power supply unit is explosion-proof lighting device further comprises at least one status display lamp for displaying the state of the battery on one side of the first body and the second body. The method of claim 10,
The status display lamp is explosion-proof lighting device including a plurality of charge amount display lamp for displaying the remaining amount of the battery according to the number of lamps that are lit.

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