KR102363675B1 - Heat sink coated with carbon allotrope and dual structure of explosion-proof lamp including the same - Google Patents

Abstract

The present invention is located on the outer periphery, the first light distribution unit for emitting light in a first direction; and
It relates to a double light distribution structure explosion-proof lamp including; a second light distribution part located on the inner periphery, having a structure that is relatively more protruding than the first light distribution part, and emitting light in a first direction and a second direction.

Description

Heat sink coated with carbon allotrope and dual structure of explosion-proof lamp including the same

The present invention relates to an explosion-proof lamp having a double light distribution structure, wherein the double light distribution structure explosion-proof lamp includes a first light distribution unit emitting light in a first direction and a second light distribution unit emitting light in the first direction and the second direction It relates to a carbon allotrope-coated heat sink and a double light distribution structure explosion-proof lamp including the same.

Explosion-proof lamps are used where explosive gas or combustible vapors are used. Unlike general lighting lamps, explosion-proof lamps refer to lighting equipment that includes special explosion-proof facilities in lighting equipment and wiring equipment to prevent explosion and fire accidents.

In order to strengthen the safety of industrial sites and special facilities, Korean industrial standards (KS) stipulate the illuminance and uniformity system of the place where the explosion-proof lamp is installed in consideration of the specificity of the site. explosion-proof lights should be installed.

For this reason, not only the cost due to the installation of a plurality of explosion-proof lamps and the expansion of wiring facilities increases, but also the risk of safety accidents due to the expanded explosion-proof lamps and wiring facilities may also increase.

On the other hand, the current explosion-proof lamp has a smaller volume than incandescent lamps and gas lamps, and the use of LED light sources with excellent power efficiency is gradually increasing. However, LEDs emit light and a significant amount of thermal energy at the same time. If the heat energy emitted from the LED light source is not released to the outside in a short time, it causes the failure of the explosion-proof lamp, and there is a risk of safety accidents such as explosion and fire.

Accordingly, there is a demand for development of explosion-proof lamps with improved stability and minimal installation within the range that satisfies KS regulations.

Korean Patent Registration No. 10-2054750 has been proposed as a similar prior document.

Republic of Korea Patent Publication No. 10-2054750 (2019.12.11.)

In order to solve the above problems, an object of the present invention is to provide a double light distribution structure explosion-proof lamp including a heat sink coated with a carbon allotrope on one surface.

In addition, it is a double light distribution structure explosion-proof lamp including a first light distribution unit emitting light in a first direction and a second light distribution unit emitting light in first to second directions, depending on the height of the installation location. By driving the light in each direction with different outputs, it has a variety of light distribution and aims to reduce the number of installations and reduce the cost of wiring and parts by providing an even degree of uniformity.

In addition, further comprising a first power supply unit and a second power supply unit respectively independently supplying power to a substrate on which a light source element emitting light in a first direction is mounted and a substrate on which a light source element emitting light in a second direction is mounted. An object of the present invention is to provide a double light distribution structure explosion-proof lamp.

One aspect of the present invention for achieving the above object is located on the outer periphery, the first light distribution unit for emitting light in a first direction; and a second light distribution unit located on the inner periphery, having a structure that is relatively more protruding than the first light distribution unit, and emitting light in the first direction and the second direction;

In one aspect, the first direction and the second direction may have a predetermined angle between them, and the angle may be less than or equal to 90 degrees in a range exceeding 0 degrees.

In the one aspect, the first direction is a lower end direction of the first light distribution unit, and the second direction is inclined less than 90 ° in a range exceeding 0 ° with respect to the lower end direction of the first light distribution unit. can be characterized.

In the above aspect, the first light distribution unit is provided in a shape having one parallel surface, and the second light distribution unit is provided in the shape of any one of a curved surface, a pyramid, a truncated pyramid, and a polyhedron including one or more inclined surfaces. .

In the above aspect, the second light distribution unit may radiate heat at a level equal to or higher than that of the first light distribution unit.

In the one aspect, further comprising a connection part spaced apart from the first light distribution part and the second light distribution part by a predetermined distance, wherein the connection part adjusts the distance between the first light distribution part and the second light distribution part, An overlapping section of the light emitted from the first light distribution unit and the light emitted from the second light distribution unit may be controlled.

In one aspect, the first light distribution unit, the first substrate is arranged perpendicular to the first direction, a plurality of light source elements are mounted on one surface facing the first direction; a first heat sink formed on the other surface of the first substrate and including a heat dissipation member; and a first cover covering a bottom surface of the first substrate, wherein the second light distribution part is parallel to the first substrate and on which a plurality of light source elements are mounted on one surface facing the first direction. ; an auxiliary substrate arranged perpendicular to the second direction and having a plurality of light source elements mounted on one surface facing the second direction; a second heat sink formed on the other surfaces of the second substrate and the auxiliary substrate and including a heat dissipation member; and a second cover covering a bottom surface of the second substrate, wherein the first direction and the second direction in which the second light distribution unit emits light are different from each other.

In one aspect, the heat dissipation member is provided including a carbon allotrope coating film, and the carbon allotrope coating film is coated on one or more of the heat dissipation fins protruding from one surface of the heat dissipating member or the heat dissipating member. can

In the one aspect, the second heat sink may be coated with the carbon allotrope equal to or greater than that of the first heat sink.

In the one aspect, the first power supply for supplying power to the first substrate and the second substrate; and a second power supply unit for supplying power to the auxiliary substrate; may further include, independently supplying power to the first and second substrates and the auxiliary substrate.

In the above aspect, it is possible to further include a wireless amplifier module connected to the first power supply unit and the second power supply unit, to control the power supplied to the first light distribution unit and the second light distribution unit through wireless communication.

In one aspect, the first substrate may have an inclination of 5 to 30° in the circumferential direction.

In one aspect, the carbon allotrope may include any one or more selected from carbon nanotubes (CNT), carbon nanofibers (CNF), graphene, and graphene oxide.

In addition, another aspect of the present invention may provide a lighting system including two or more of the double light distribution structure explosion-proof lamp, wherein the two or more double light distribution structure explosion-proof lamps are disposed to be spaced apart from each other by a predetermined distance.

In addition, another aspect of the present invention may provide a carbon allotrope-coated heat sink including a heat dissipation member coated with carbon allotrope.

In one aspect, the carbon allotrope may be coated with a carbon allotrope including at least one selected from carbon nanotubes (CNT), carbon nanofibers (CNF), graphene, and graphene oxide.

In one aspect, the carbon allotrope-coated heat dissipation member comprises: a) a coating composition comprising a carbon allotrope, a polycyclic aromatic monomer containing a double bond, a curing agent, and a solvent; preparing; b) coating and curing the bare heat dissipation member with the coating composition; and c) heat-treating.

In one aspect, the monomer containing the polycyclic aromatic is made of vinyl naphthalene, N-vinyl carbazole, vinyl fluorene, and vinyl anthracene. It may include any one or more selected from the group.

In one aspect, the heat dissipation member may include a plurality of heat dissipation fins protruding from the other surface of the heat dissipation plate, and a carbon allotrope may be coated on one surface of the heat dissipation fin.

The double light distribution structure explosion-proof lamp according to the present invention may include a first light distribution unit that emits light in a first direction and a second light distribution unit that emits light in first to second directions, through which the uniformity is achieved in the same area. It is possible to reduce the number of explosion-proof lights required to form In addition, as the number of explosion-proof lamps installed in the same area decreases, power consumption can be reduced, and an energy saving effect can be provided.

In addition, one surface of the heat sink may be coated with a carbon allotrope, thereby improving the heat dissipation characteristics of the heat sink. In addition, it is possible to reduce the risk of fire and explosion in the explosion-proof lamp due to overheating by discharging the thermal energy emitted from the substrate to the outside in a short time.

1 is an exploded perspective view for explaining the configuration of a double light distribution structure explosion-proof lamp according to an embodiment of the present invention.
2 is a front view of a double light distribution structure explosion-proof lamp.
3 is a cross-sectional view for explaining a connection part.
4 is a cross-sectional view for explaining a fastening method of a connection part.
5 is a view for explaining a state in which a first light distribution unit emits light in a first direction.
6 is a view for explaining a state in which a second light distribution unit emits light in a first direction and a second direction;
7 is a diagram for explaining a difference between a first direction and a second direction.
8 is a view showing a state in which two double light distribution structure explosion-proof lamps are disposed.
9 is a view showing a state in which the gap between two double light distribution structure explosion-proof lamps is widened.
10 is a view for explaining a method of maintaining a light overlapping region by controlling the amount of light emitted.
11 is a diagram for comparing the difference between a conventional LED explosion-proof lamp and a double light distribution structure explosion-proof lamp.
12 is a view showing a state in which the conventional LED explosion-proof lamp at the height of H2 emits light.
13 is a view showing the difference in luminous intensity of a conventional LED explosion-proof lamp.
14 is a view showing a state in which the double light distribution structure explosion-proof lamp at the height of H2 emits light.
15 is a view showing the difference in luminous intensity of the double light distribution structure explosion-proof lamp.
16 is a view for explaining wireless communication of a double light distribution structure explosion-proof lamp.
17 is a graph for evaluating the heat dissipation effect of the heat dissipating member of the heat sink.
18 is a simulation result of heat dissipation characteristics of a double light distribution structure explosion-proof lamp including a heat sink.
19 is a view for explaining the difference in the uniformity of the conventional LED explosion-proof lamp and the double light distribution structure explosion-proof lamp in the same area.
20 is a thermal distribution photograph of a double light distribution structure explosion-proof lamp coated with a heat dissipation paint.

Hereinafter, a carbon allotrope-coated heat sink according to the present invention and a double light distribution structure explosion-proof lamp including the same will be described in detail. The drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms, and the drawings presented below may be exaggerated to clarify the spirit of the present invention. At this time, if there is no other definition in the technical and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and in the following description and accompanying drawings, the subject matter of the present invention Descriptions of known functions and configurations that may unnecessarily obscure will be omitted.

One aspect of the present invention is a double light distribution structure explosion-proof lamp including a first light distribution part and a second light distribution part, preferably, the second light distribution part has a relatively protruding structure than the first light distribution part, and more preferably the The first light distribution unit may emit light in a first direction, and the second light distribution unit may emit light in the first direction and the second direction. In other words, the double light distribution structure explosion-proof lamp can expand the width of the emitted light by emitting light in two or more directions.

Through this, it is possible to reduce the quantity of explosion-proof lamps to form an even uniformity in the same area by 15 to 25% compared to the existing LED and metal explosion-proof lamps. In addition, as the number of explosion-proof lamps installed in the same area decreases, power consumption can provide 15 to 25% energy savings compared to existing LED explosion-proof lamps, and 70 to 80% energy savings compared to existing metal explosion-proof lamps can do.

In addition, another aspect of the present invention may provide a double light distribution structure explosion-proof lamp further comprising a heat sink coated with a carbon allotrope on one surface of the heat dissipation member, preferably by mixing the carbon allotrope with a monomer containing a polycyclic aromatic It is possible to strengthen the heat dissipation characteristics of the carbon allotrope and the bonding force between the coating film and the heat dissipation member through the coating and heat treatment. Through this, it is possible to provide a heat sink coated with a carbon allotrope on one surface of the heat dissipation member, and the heat dissipation characteristic of the heat sink can be improved. Furthermore, it is possible to reduce the risk of damage to the substrate or fire and explosion due to overheating by discharging thermal energy generated from the light source and the substrate to the outside within a short time.

In a preferred embodiment, the heat dissipation member is a) a carbon allotrope, a polyaromatic monomer containing a double bond, a coating composition comprising a curing agent and a solvent; preparing the step of coating the heat dissipation member; b) coating and curing the bare heat dissipation member with the coating composition; And c) heat-treating; may be provided through.

At this time, the carbon allotrope means any material containing one or more carbon (C), preferably carbon nanotubes (Carbon-nanotube; CNT), carbon nanofiber (Carbon-nanofiber; CNF), graphene (Graphene) and graphene oxide (Graphene oxide) may be a material containing any one or more selected from.

As a preferred example, the heat dissipation member of the heat sink may be coated by dipping carbon nanotubes (CNT). According to an embodiment, as a method of providing the carbon nanotube (CNT) coating, a chemical vapor deposition method, a physical vapor deposition method, an atomic layer deposition method, and spraying Although drying methods are known, chemical vapor deposition, physical vapor deposition, and atomic layer deposition require expensive vacuum equipment and undergo a complex heat treatment process. In addition, the spray drying method requires a high-pressure sprayer, and complex spray conditions must be set. Therefore, in the present invention, the process is easy and inexpensive, and it is intended to be coated using dipping, which is easy for mass production.

Specifically, it is preferable that the carbon nanotube (CNT) has a porosity of 80 to 95% and an aspect ratio of 1,000 to 15,000. When it exceeds 95%, voids in the carbon nanotubes may increase, thereby reducing heat dissipation characteristics.

In addition, when the aspect ratio does not reach 300, the length at the same diameter is small, so heat cannot be efficiently dissipated. , similarly, the physical properties of carbon nanotubes (CNTs) may decrease.

According to an embodiment, before coating the carbon nanotubes (CNT), the powder containing the carbon nanotubes (CNT) may be pretreated to remove impurities. Preferably, the powder containing the carbon nanotubes (CNT) may be heated to 500 to 900° C. to remove impurities mixed with the carbon nanotubes (CNT).

Next, the carbon nanotubes (CNTs) from which impurities are removed are immersed in a predetermined organic solvent and stirred to obtain a mixed solution in which carbon nanotubes (CNTs) are mixed, preferably carbon nanotubes (CNTs) A mixed solution containing 3 to 5% by weight can be obtained.

According to an embodiment, the organic solvent is ethanol, methanol, isopropyl alcohol, N,N-dimethylformamide (N,N-dimethylformamide), dichloroethane, hexamethylphosphoramide (hexamethylphosphoramide) , ortho-dichlorobenzene (ortho-dichlorobenzene), chloroform and toluene dichlorobenzene (dichlorobenzene), N-methyl-2-pyrrolidone (N-methyl-2-pyrrolidinone), morochlorobenzene (monochlorobenzene) selected from the group consisting of It may include any one or more, preferably immersed in ethanol.

According to an embodiment, in order to evenly disperse the carbon nanotubes (CNTs), ultrasonication may be performed at 20 to 80 kHz for 1 to 2 hours in the mixed solution. Thereafter, a polycyclic aromatic monomer and a curing agent may be added to the mixed solution in which the carbon nanotubes (CNT) are mixed.

Here, the polycyclic aromatic monomer means a monomer in which an aromatic hydrocarbon having two or more benzene rings and a vinyl group are bonded, and a carbon-carbon double bond is a monomer containing . The polyaromatic monomer includes at least one selected from the group consisting of vinyl naphthalene, N-vinyl carbazole, vinyl fluorene, and vinyl anthracene. can do.

The curing agent is a material that initiates curing of the composition and cures the polyaromatic monomer in a bonded state with carbon nanotubes (CNTs). Preferably, a radical initiator composed of an inorganic peroxide, an organic peroxide and a nitrogen compound can be used. there is.

wherein the inorganic peroxide may include sodium persulfate, ammonium persulfate, potassium perphosphate, hydrogen peroxide and potassium persulfate, and the organic peroxide is t-butyl peroxy iso butyrate, t-butyl peroxide, 3,5,5 -trimethylhexanol peroxide, di-t-butyl peroxide, t-butylcumyl peroxide, cumene hydroperoxide, isobutyl peroxide, p-mentane hydroperoxide, dibenzoyl peroxide, acetyl peroxide and octanoyl Peroxide may be included, and the nitrogen compound may include 4-dimethylvaleronitrile, azobis-2, azobiscyclohexanecarbonitrile, azobisisobutyronitrile, and azobisisobutyrate (butyric acid)methyl. can

According to an example, 1 to 10 parts by weight of the polyaromatic monomer and 0.1 to 5 parts by weight of the curing agent may be mixed with respect to 100 parts by weight of the mixed solution in which the carbon nanotubes (CNT) are mixed. When the above-described polyaromatic monomer is mixed in excess of 10 parts by weight, the ratio of the carbon nanotubes (CNT) in the coating may decrease, thereby reducing thermal properties. On the other hand, when less than 1 part by weight of the polycyclic aromatic monomer is mixed, the adhesiveness between the heat dissipation members may decrease.

Thereafter, the carbon nanotube (CNT) and the polycyclic aromatic monomer are dipping the heat dissipation member in a mixed coating solution for 10 to 30 minutes, and the dipping carbon nanotube (CNT) can be cured, through which the heat dissipation member is applied to the heat dissipation member. A carbon nanotube (CNT) coating film may be provided. At this time, the curing may be performed by a conventional method, and preferably, natural drying or ultraviolet irradiation at a temperature of 10 to 110° C. may be performed. According to an embodiment, the dipping and drying process may be repeatedly performed, and preferably, the thickness of the coating film may be controlled by repeatedly performing 40 to 80 times.

Finally, heat treatment may be performed at 650 to 1100° C. for 1 to 5 hours. Through the heat treatment, the polycyclic aromatic monomer may be carbonized, and the carbonized polycyclic aromatic may cause a pi-pi bond with the carbon nanotube (CNT) to increase the bonding strength of the carbon nanotube (CNT) coating. there is. At the same time, by growing a carbon nanotube (CNT) coating through the heat treatment, heat dissipation characteristics can be strengthened.

According to an embodiment of the present invention, the heat dissipation characteristic of the heat sink may be controlled by controlling the thickness of the carbon allotrope coating. For example, in the case of the second heat sink, heat dissipation characteristics may be improved by increasing the thickness at which the carbon allotrope is coated. This relatively good heat sink can be manufactured.

The heat dissipation member manufactured by the above process preferably has a bonding strength of the carbon nanotube (CNT) coating film of 90 MPa, which if the bonding strength does not reach 90 MPa, the coating film may be easily damaged and detached due to an external force, which may be a long-term This is because it is difficult to expect stable heat dissipation characteristics during use.

In addition, another aspect of the present invention further includes a wireless amplifier module connected to the first power supply unit and the second power supply unit to control the power supplied to the first light distribution unit and the second light distribution unit through wireless communication dual It is possible to provide a light distribution structure explosion-proof lamp.

Hereinafter, the configuration of the present invention will be described with reference to FIGS. 1 to 4 .

1 is an exploded perspective view for explaining the configuration of a double light distribution structure explosion-proof lamp according to an embodiment of the present invention, and FIG. 2 is a front view of the double light distribution structure explosion-proof lamp. 3 is a cross-sectional view for explaining a connection part, and FIG. 4 is a cross-sectional view for explaining a fastening method of the connection part.

1 to 2 , the double light distribution structure explosion-proof lamp 1000 may include a first light distribution unit 110 , a second light distribution unit 130 , and a connection unit 150 .

The first light distribution unit 110 may include any one or more of a first substrate 111 , a first heat sink 210 , and a first cover 113 .

The first substrate 111 may be vertically arranged in a first direction to be described later, and may be formed in the form of a plate having a predetermined area. Preferably, it may be formed in any one of a circular shape, an oval shape, and a polygonal shape. The first substrate 111 may be divided into an outer peripheral portion 111a and an inner peripheral portion 111b, and a circuit region may be provided in the outer peripheral portion 111a of the first substrate 111 . According to an embodiment, a plurality of first light source elements L10 may be directly mounted in the circuit area, and a first heat sink 210 to be described later is disposed on the rear surface of the surface on which the plurality of first light source elements L10 are mounted. ) can be combined.

Referring to FIG. 3 , the heat sink 200 is in contact with the substrate and is formed on a device surface 200a having a circular, elliptical and polygonal shape and a rear surface of the device surface 200a, and in the device surface 200a It may be composed of a heat dissipation member 200b for dissipating the transferred heat. According to an embodiment, the heat dissipation member 200b may be formed to protrude in the form of a fin from the rear surface of the device surface 200a.

According to an embodiment, one surface of the heat dissipation member 200b may be coated with a carbon allotrope. In other words, a coating film formed by coating a carbon allotrope on one surface of the heat dissipation member 200b or at least one of the heat dissipation fins in which the heat dissipation member 200b protrudes in the form of a fin may be provided. According to an embodiment, the carbon allotrope may include carbon nanotubes (CNTs). Since the mixing ratio and coating method of the carbon allotrope coating film have been described above, they will be omitted.

Referring back to FIGS. 1 and 2 , the first heat sink 210 may be formed on the rear surface of the surface on which the plurality of first light source elements L10 are mounted, more preferably the first substrate 111 . ) and the device surface 200a may be fixed in contact with each other. According to an embodiment, the first heat sink 210 may radiate heat generated from the first substrate 111 to the outside through the first heat dissipation member 210b.

The first cover 113 may be made of a transparent material, and a predetermined space may be formed therein to cover the outer peripheral portion 111a of the first substrate 111 . Through this, the first cover 113 may protect the outer peripheral portion 111a and the first light source device L10 mounted on the outer peripheral portion 111a from the outside.

The second light distribution unit 130 may include any one or more of a second substrate 131 , a second heat sink 220 , a second cover 133 , and an auxiliary substrate 135 .

Since the second substrate 131 and the second cover 133 of the second light distribution unit 130 correspond to the first substrate 111 and the first cover 113, respectively, a detailed description thereof will be omitted.

The second heat sink 220 may include a first direction heat sink 221 formed on the second substrate 131 and a second direction heat sink 223 formed on an auxiliary substrate 135 to be described later. there is. A detailed description of the first directional heat sink 221 and the second directional heat sink 223 will be omitted because it corresponds to the first heat sink 210 .

The auxiliary substrate 135 may be fixed to the second substrate 131 in a direction inclined at a predetermined angle, and preferably is 90° or less in a range exceeding 0° to the second substrate 131 . It can be fixed in an inclined position.

The connection part 150 may have a tube shape having a predetermined interior space, and one surface of the connection part 150 may be fixed to one surface of the first light distribution part 110 and formed. Preferably, it may be formed to protrude from one surface of the first light distribution unit 110 . More preferably, the inner peripheral portion 111b of the first substrate 111 may protrude toward the lower end of the first light distribution portion 110 . In addition, the other surface of the connection part 150 may be fixed to one surface of the second light distribution part 130 and may be formed in a protruding shape as well. More preferably, it may be fixed to one surface of the second substrate 131 in a protruding form. According to an embodiment, the connection part 150 may further include an auxiliary connection part (not shown) extending in the width direction of the connection part 150 , and one surface of the auxiliary substrate 135 is fixed with the auxiliary connection part. can do.

According to an embodiment, the connection part 150 may be vertically fixed to the first light distribution part 110 , and similarly, it may be vertically fixed to the second light distribution part 130 . In other words, the first light distribution unit 110 and the second light distribution unit 130 may be fixed in parallel.

Referring to FIG. 4 , the connection part 150 may include a first connection part 151 fixed to the first light distribution part 110 and a second connection part 153 fixed to the second light distribution part 130 . can In addition, the first connection part 151 may be fastened to the first substrate 111 by a screw coupling method, and the second connection part 153 may be coupled to the second board 131 by a screw coupling method.

According to an embodiment, the first connection part 151 and the second connection part 153 may be fastened by a screw coupling method. According to an example, the inner surface of the first connection part 151 and the outer surface of the second connection part 153 may be fastened in a screwing manner, and, conversely, the inner surface of the second connection part 153 and the first connection part ( 151) may be fastened to the outer surface in a screwing manner. Through this, the first connection part 151 and the second connection part 153 may be coupled, and the connection part ( 150) The overall length can be adjusted. In other words, the separation distance between the first light distribution unit 110 and the second light distribution unit 130 may be controlled by adjusting the coupling state between the first connection unit 151 and the second connection unit 153 . In the present invention, although screw coupling is described as an example of a method of coupling the first connection part 151 and the second connection part 153, it is obvious that it can be modified by a conventionally known fastening method.

Although not shown in the drawings, the double light distribution structure explosion-proof lamp 1000 may include a power supply unit for supplying power, preferably a second substrate for supplying power to the first substrate 111 and the second substrate 131 . A first power supply unit and a second power supply unit supplying power to the auxiliary substrate 135 may be included. In addition, the first power supply unit and the second power supply unit may operate independently. In other words, the light source elements mounted on the first substrate 111 and the second substrate 131 may be supplied with first power through the first power supply, and the light source elements mounted on the auxiliary substrate 135 may A second power may be supplied through the second power source.

According to an embodiment, the second power supply unit may supply power greater than that of the first substrate 111 and the second substrate 131 to the auxiliary substrate 135 . In addition, the second direction heat sink 223 may be coated with more carbon allotropes than the first heat sink 210 and the first direction heat sink 221 . Through this, the auxiliary substrate 135 may emit light further in the second direction D2 to be described later, and heat generated from the auxiliary substrate 135 may be emitted more quickly.

Although not shown in the drawings, the first substrate 111 of the first light distribution unit 110 may have a predetermined inclination in an outer circumferential direction, that is, in a direction away from the connection unit 150 . According to an example, the first substrate 111 may have an inclination of 5 to 30°, through which the first substrate 111 further emits light from the light source device mounted on the first substrate 111 . can be emitted far away.

The configuration of the double light distribution structure explosion-proof lamp 1000 of the present invention has been described above. Hereinafter, an operation state of the double light distribution structure explosion-proof lamp 1000 will be described with reference to FIGS. 5 to 7 .

5 is a view for explaining a state in which the first light distribution unit emits light in a first direction, and FIG. 6 is a view for explaining a state in which the second light distribution unit emits light in the first direction and the second direction; 7 is a diagram for explaining a difference between a first direction and a second direction.

Referring to FIG. 5 , as described above, the first light distribution unit 110 includes a first substrate 111 on which a plurality of first light source elements L10 are arranged in one direction, and the first heat sink 210 ) through the heat generated by the first substrate 111 may be discharged. In this case, a direction in which the first light source elements L10 emit light may be defined as the first direction D1 . In other words, the first light distribution unit 110 may emit light in the first direction D1 .

Referring to FIG. 6 , as described above, the second light distribution unit 130 includes a second substrate 131 in which a plurality of second light source elements L21 are arranged in one direction, and the second substrate 131 and a predetermined structure. The auxiliary substrate 135 is inclined at an angle of , and a plurality of auxiliary light source elements L22 are arranged in one direction. In addition, the second light distribution unit 130 may emit light in two different directions through the second light source element L21 and the auxiliary light source element L22. In this case, the direction in which the second light source element L21 emits light may be defined as the first direction D1 similar to the direction in which the first heat sink 210 emits light. In addition, a direction in which the auxiliary light source element L22 emits light may be defined as a second direction D2. In other words, the second light distribution unit 130 may emit light in different directions, and specifically, may emit light in the first direction D1 and the second direction D2 .

Referring to FIG. 7 , the light in the first direction D1 and the light in the second direction D2 emitted from the second light distribution unit 130 may have a predetermined angle θ between them. The angle between the angles may be 90° or less in a range exceeding 0°, preferably 10 to 60°.

The operation state of the double light distribution structure explosion-proof lamp 1000 of the present invention has been described above. Hereinafter, a method of ensuring evenness through the double light distribution structure explosion-proof lamp 1000 will be described with reference to FIGS. 8 to 15 .

8 is a view showing a state in which two double light distribution structure explosion-proof lamps are arranged, FIG. 9 is a view showing a state that the distance between two double light distribution structure explosion-proof lamps is widened, and FIG. 10 is light overlap by controlling the amount of light emitted It is a diagram for explaining a method of maintaining a zone.

Referring to FIG. 8 , the first double light distribution structure explosion-proof lamp 1000a and the second double light distribution structure explosion-proof lamp 1000b may be disposed in a predetermined space. The first double light distribution structure explosion-proof lamp 1000a and the second double light distribution structure explosion-proof lamp 1000b emit light in the first direction D1 and the second direction D2 to a predetermined light overlapping area (Light). overlap; LO) can be formed. Through this, light can be emitted from multiple directions to form an even degree of uniformity in a predetermined space. When a predetermined space is widened, an additional explosion-proof lamp must be installed or the explosion-proof lamp must be moved in the horizontal direction M1 as shown in FIG. 9 . In this case, the cost of installing an additional explosion-proof lamp may increase, and the installation interval of the explosion-proof lamp may increase, so that the uniformity may decrease compared to before.

However, in the present invention, power may be further supplied to the light source elements arranged in the second direction D2 as shown in FIG. 10 , and light emitted in the second direction D2 may be increased. Through this, even if the installation interval is increased, the same level of light overlapping area as before ( LO) and can provide the same level of uniformity as before.

11 is a diagram for comparing the difference between the conventional LED explosion-proof lamp and the double light distribution structure, and FIG. 12 is a view showing the state in which the conventional LED explosion-proof lamp emits light at the height of H2. 13 is a view showing the difference in luminous intensity of a conventional LED explosion-proof lamp, FIG. 14 is a view showing a state in which a double light distribution structure explosion-proof lamp emits light at H2 height, and FIG. is a diagram showing

Referring to FIG. 11 , an existing explosion-proof lamp O and the double light distribution structure explosion-proof lamp 1000 are disposed in a space having a predetermined ceiling height to emit light. However, the ceiling height may be increased or decreased depending on the site situation. For example, the ceiling height may increase from the first height H1 to the second height H2, and accordingly, the explosion-proof lamp may be disposed to move in the vertical direction M2. In this case, the illuminance of the bottom surface may be reduced, and more power must be supplied to form the same level of uniformity as before.

12, in the case of the explosion-proof lamp (O″) moved in the vertical direction, since the light is emitted in only one direction, when the power is increased, the outer periphery (Oa) and the inner periphery (Ob) of the conventional LED explosion-proof lamp A difference in luminous intensity between the two can be clearly generated. Specifically, in the conventional LED explosion-proof lamp emitting light in one direction, light is distributed in the form of FIG. 13, the outer periphery (Oa) receives a small amount of light, and the inner periphery (Ob) receives an excessive amount of light to achieve a uniformity can be reduced.

However, referring to FIGS. 14 to 15 , the double light distribution structure explosion-proof lamp 1000 disclosed in the present invention emits light in two or more directions to minimize the difference in illuminance depending on the location. Through this, the double light distribution structure explosion-proof lamp can provide the same level of uniformity as before even in the horizontally moved (M1) and vertically moved (M2) situations.

16 is a view for explaining wireless communication of a double light distribution structure explosion-proof lamp.

Referring to FIG. 16 , the double light distribution structure explosion-proof light 1000 may further include a wireless amplifier module, and preferably further include a wireless amplifier module communicating with the first power supply unit and the second power supply unit. . The wireless amplifier module may include any one or more of a PC, a server computer, a smart phone, a repeater, and a terminal, and may transmit and receive data and signals using a known wireless communication method such as Wi-Fi or Bluetooth.

Through this, the user can control the first power supplied to the first substrate 111 and the second substrate 131 and the light distribution unit from a distance, and control the second power supplied to the auxiliary substrate 151 . can do. In other words, the user can independently control the intensity of light emitted in the first direction D1 and the intensity of light emitted in the second direction D2 using the wireless amplifier module.

17 is a graph for evaluating the heat dissipation effect of the heat dissipating member of the heat sink, and FIG. 18 is a heat dissipation characteristic simulation result of the double light distribution structure explosion-proof lamp including the heat sink.

To examine the heat dissipation characteristics of the heat dissipation member, a heat sink made of Al 6063 material without any treatment, a heat sink coated with ceramic on one side, an anodizing coated heat sink, and carbon nanotubes (CNT) electrodeposited heat sink and carbon nanotube (CNT) coated heat sink using dipping method, and thermal analysis of double light distribution structure explosion-proof lamp using Dassault Systemes' Solid Works-Flow Simulation program was performed.

17 to 18 , as a result of thermal analysis, it was confirmed that the untreated Al 6063 heatsink had the highest thermal resistance, and the ceramic-coated heatsink had an intermediate level of thermal resistance. In addition, heat sinks coated with anodizing, heatsinks coated with carbon nanotubes (CNTs) and heatsinks coated with carbon nanotubes (CNTs) are comparatively better than heatsinks without any treatment and heatsinks coated with ceramic. It was confirmed that they have low thermal resistance and have thermal resistances at the same level as each other.

In particular, it can be seen that the heat sink coated with carbon nanotubes (CNT) has a temperature change very similar to that of the heat sink coated with anodizing. This means that the carbon nanotube (CNT) coating contributes to lowering the thermal resistance of the heat sink and has the same level of heat dissipation characteristics as anodizing and CNT electrodeposition coating, which require expensive equipment.

19 is a view for explaining the difference in the uniformity of the conventional LED explosion-proof lamp and the double light distribution structure explosion-proof lamp in the same area.

Referring to FIG. 19 , the minimum quantity of LED explosion-proof lamps to satisfy a uniformity of 20% or more in the same space was compared. Specifically, the minimum conditions to realize a uniformity of 20% or more in a space of 95 x 80 x 100㎥ were calculated, and the output of each explosion-proof lamp was the same at 80W. As a result, in order to secure a uniformity of 20% or more, the conventional LED explosion-proof system required 12 installations. confirmed that there is. As described above, the double light distribution structure explosion-proof lamp of the present invention emits light in two or more directions, unlike the existing LED explosion-proof lamp, and has a superior beam overlapping ability compared to the same area, and has a high uniformity due to the increase in the beam overlapping section. because it is possible to obtain In other words, the double light distribution structure explosion-proof lamp can realize the same or greater effect in a smaller quantity than the conventional LED in the same area, which means that the cost required for installation and management of the explosion-proof lamp can be reduced.

20 is a thermal distribution photograph of a double light distribution structure explosion-proof lamp coated with a heat dissipation paint.

According to an embodiment, thermal conductivity may be further improved by additionally applying a carbon nanotube heat dissipation paint to one surface of the double light distribution structure explosion-proof lamp. Specifically, the heat dissipation paint can be used by selecting any one of a high temperature drying heat dissipation paint using modified silicone and a low temperature drying heat dissipation paint using epoxy depending on the use of the binder, and the high temperature drying heat dissipation paint and the low temperature drying heat dissipation paint It can be used by mixing.

The high-temperature dry heat dissipation paint may be provided by mixing a modified silicone resin serving as a binder with high crystalline nano-carbon powder serving as a thermal radiation or thermally conductive filler in a predetermined solvent. Specifically, the low-temperature drying heat dissipation paint is mixed with 20% by weight of modified silicone, 20% by weight of highly crystalline nano-carbon powder, and 10% by weight of additives such as a dispersant in 50% by weight of a propylene glycol monomethyl ether acetate (PGMEA) solvent. can be provided.

The low-temperature dry heat dissipation paint may be provided by mixing an epoxy resin serving as a binder and a highly crystalline nano-carbon powder serving as a thermal radiation or thermally conductive filler in a predetermined solvent. Specifically, the low-temperature dry heat dissipation paint is provided by mixing 20 wt% of epoxy, 20 wt% of highly crystalline nano-carbon powder, and 10 wt% of additives such as a dispersant in 50 wt% of a methyl ethyl ketone (2-Butanone) solvent. can

In this case, the dispersant may use any of the dispersants used in the carbon-based filler, preferably modified polyurethane, modified acrylate, 2-ethylhexyl acrylate, polycarbonate, styrene, modified polyurethane, Acrylic copolymer, modified acrylate, alphamethylstyrene, vinyl acrylate, acrylonitrile-butadiene-styrene copolymer, acrylic copolymer, polyester, polyphenylene ether, polyolefin, methyl methacrylate, alkyl (C1- C10) A dispersing agent comprising at least one material selected from the group consisting of acrylates may be used.

According to an embodiment, the nano-carbon may be used by being transformed into a material made of carbon nanotubes and predetermined carbon.

The specific content of the heat dissipation paint can be summarized in Tables 1 and 2.

Referring to FIG. 20 , an experiment was performed on the second light distribution part of the double light distribution structure explosion-proof lamp, and specifically, four The temperature difference between the front part and the rear part at the same location was measured by selecting the measurement point (TP). That is, (a) of FIG. 20 is the front part of the second light distribution part coated with general paint, (b) is the rear part of the second light distribution part coated with general paint, and (c) is the heat dissipation coating agent. 2 It is the front part of the light distribution part, and (d) is the rear part of the 2nd light distribution part coated with heat dissipation paint. In addition, the measurement results are shown in Table 3.

As shown in Table 3, it can be seen that when the general paint is applied, the temperature of the front part is higher and the temperature of the rear part is lower than when the heat dissipation paint is applied. In particular, in the case of the second measurement point, when a general paint is applied, the front part is 52.1 ℃, the rear part is 38 ℃, and the temperature difference between the front part and the rear part is 14.1 ℃. On the other hand, when heat dissipation paint is applied, the front part is 47.3 °C and the rear part is 41.2 °C. This means that the heat conduction properties are improved as the heat dissipation paint is applied, and through this, the amount of heat emitted from the rear part can be increased.

Hereinafter, a method for manufacturing a heat sink according to the present invention will be described in more detail through examples. However, the following examples are only a reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless defined otherwise, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of effectively describing particular embodiments only and is not intended to limit the invention. In addition, the unit of additives not specifically described in the specification may be weight %.

[Example 1]

15 g of carbon nanotube (CNT) powder was heated to 800° C. to remove impurities mixed in the carbon nanotube (CNT), and the carbon nanotube (CNT) powder from which the impurities were removed was immersed in 500 ml of ethanol to remove the carbon nanotube (CNT) powder. A mixed solution in which 3 wt% of nanotubes (CNT) was mixed was prepared. In addition, the mixed solution was sonicated at 60 kHz for 2 hours, and stirred for 3 hours.

Then, a carbon nanotube (CNT) coating solution was prepared by mixing 5 parts by weight of N-vinyl carbazole and 2 parts by weight of sodium vulcanate with respect to 100 parts by weight of the mixed solution, and a heat dissipation member was dipped in the coating solution, and the dipping heat dissipation member was cured in a furnace at 80° C. to produce a carbon nanotube (CNT) coating film. Thereafter, the dipping and curing were repeated 40 times to produce a carbon nanotube (CNT) coating film having a thickness of 200 μm.

Finally, the heat dissipation member on which the carbon nanotube (CNT) coating film was formed was heat-treated at 900° C. for 3 hours and 30 minutes.

[Example 2]

All processes were performed in the same manner as in Example 1, except for repeating dipping in the coating solution until a carbon nanotube (CNT) coating film having a thickness of 400 μm was formed.

[Example 3]

All processes were performed in the same manner as in Example 1 except for preparing a carbon nanotube (CNT) coating solution by mixing with 10 parts by weight of N-vinyl carbazole with respect to 100 parts by weight of the mixed solution.

[Example 4]

All processes were performed in the same manner as in Example 3, except for repeated dipping in the coating solution until a carbon nanotube (CNT) coating film having a thickness of 400 μm was formed.

[Example 5]

All processes were performed in the same manner as in Example 1 except for preparing a carbon nanotube (CNT) coating solution by mixing with 20 parts by weight of N-vinyl carbazole with respect to 100 parts by weight of the mixed solution.

[Example 6]

All processes were carried out in the same manner as in Example 1 except for preparing a carbon nanotube (CNT) coating solution by mixing with 0.5 parts by weight of N-vinyl carbazole with respect to 100 parts by weight of the mixed solution.

[Comparative Example 1]

All processes were carried out in the same manner as in Example 1 except that a carbon nanotube (CNT) coating was prepared without adding a monomer.

[Comparative Example 2]

All processes were performed in the same manner as in Example 1 except that N-vinyl carbazole was replaced with N-isopropyl acrylate monomer that does not contain an aromatic hydrocarbon.

[Comparative Example 3]

All processes except for the heat treatment were performed in the same manner as in Example 1.

[Characteristic evaluation method]

The properties of the heat dissipation members prepared in Examples 1 to 4 and Comparative Examples 1 to 5 were analyzed by the method described below, and the results are shown in Table 5 below.

1) Cohesion:

In order to measure the bonding force between the carbon nanotube (CNT) coating film and the heat dissipation member, the photoelastic effect of the carbon nanotube (CNT) coating film was observed. Photoelasticity means that a test object causes birefringence by an external force, and when an external force is applied to the test piece, when polarized light passes through it in the vertical direction, it is a method of measuring the stress by observing the stripes generated by the birefringence phenomenon. Through this, the stress required until the carbon nanotube (CNT) coating film was broken was measured.

2) Thermal Conductivity:

In order to compare the heat dissipation characteristics, the thermal conductivity of the heat dissipating members manufactured for Examples 1 to 4 and Comparative Examples 1 to 5 was analyzed. The heat dissipation member on which the carbon nanotube (CNT) coating film was formed was cut to a size of 10×10 cm 2 , and thermal conductivity at 80° C. was analyzed using a laser flash analyzer. As the laser flash analyzer, LFA447 manufactured by Netzsh, Germany was used.

As shown in Table 5, Examples 1 to 5 all had a binding force of 100 MPa or more, but the binding force of Comparative Example 1 in which the polyaromatic monomer was not mixed was 48.2 MPa, which did not reach the reference binding force of 90 MPa. , Comparative Example 2 in which the monomer was replaced with N-isopropyl acrylate and Comparative Example 3 without heat treatment exceeded the standard values by 94.6 MPa and 92.5 MPa, respectively. However, it can be seen that the binding force is weak compared to Examples 1 to 5 in which a polyaromatic monomer is mixed and heat treatment is performed.

Through this, it was confirmed that the bonding force between the carbon nanotube (CNT) coating film and the heat dissipation member can be increased to 100 MPa or more when the polycyclic aromatic monomer is mixed and heat treatment is performed. This is because the polycyclic aromatic monomer is carbonized by heat treatment, and the carbon nanotube (CNT) coating film and the pi-pi bond are formed to increase the bonding strength.

In addition, Examples 1 to 4 all had a thermal conductivity of 2200 W/mK or more, which is about three times that of Comparative Example 1 in which the polyaromatic monomer was not used. Through this, it can be confirmed that the polyaromatic monomer contributes to the enhancement of thermal conductivity.

In addition, comparing Examples 1 to 4 and Example 5, even when the polyaromatic monomer was mixed in excess of 50% by weight, the difference in binding force was insignificant, and it was confirmed that the thermal conductivity was significantly reduced to 1,540W/mK. can This is because the ratio of the carbon nanotubes (CNTs) in the coating was reduced because the polyaromatic monomer was overmixed.

In addition, when comparing Examples 1 to 4 and Example 6, the thermal conductivity was 2,042 W / mK, which did not show a significant difference from Examples 1 to 4, but it can be confirmed that the bonding force was low at 74.5 MPa. This is because the carbon nanotube (CNT) coating film and the heat dissipation member are not sufficiently coupled due to the lack of the polycyclic aromatic monomer.

Finally, comparing Examples 1 and 3 with Examples 2 and 4, Examples 2 and 4 coated with carbon nanotubes (CNTs) to a thickness of 400 μm were coated with carbon nanotubes (CNTs) to a thickness of 200 μm. It can be seen that the thermal conductivity is better than that of Examples 1 and 3. Through this, as the thickness of the carbon nanotubes (CNTs) coated increases, the heat release properties can be further improved, and by coating more carbon nanotubes (CNTs) where high heat release properties are required, heat can be generated. accidents can be prevented.

Although the present invention has been described through the specific items and limited preparation examples as described above, these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above preparation examples, and the present invention belongs to Various modifications and variations are possible from these descriptions by those of ordinary skill in the art.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1000: double light distribution structure explosion-proof lamp
110: first light distribution unit
111: first substrate
113: first cover
130: second light distribution unit
131: second substrate
133: second cover
135: auxiliary board
150: connection
151: first connection part
153: second connection part
200: heat sink
210: first heat sink
220: second heat sink

Claims (19)

a first light distribution unit located on the outer periphery and emitting light in a first direction; and
It is located on the inner periphery, has a relatively protruding structure than the first light distribution portion, the second light distribution portion emitting light in the first direction and the second direction; includes,
The first light distribution unit,
a first substrate arranged perpendicular to the first direction and having a plurality of light source elements mounted on one surface facing the first direction;
a first heat sink formed on the other surface of the first substrate and including a heat dissipation member; and
Including; a first cover covering the bottom surface of the first substrate;
The second light distribution unit,
a second substrate parallel to the first substrate and having a plurality of light source elements mounted on one surface facing the first direction;
an auxiliary substrate arranged perpendicular to the second direction and having a plurality of light source elements mounted on one surface facing the second direction;
a second heat sink formed on the other surfaces of the second substrate and the auxiliary substrate and including a heat dissipation member; and
Including; a second cover covering the bottom surface of the second substrate;
The double light distribution structure explosion-proof lamp, characterized in that the first direction and the second direction in which the second light distribution unit emits light are different from each other. The method of claim 1,
The first direction and the second direction have a predetermined angle between the double light distribution structure explosion-proof lamp, characterized in that the angle is less than 90 ° in the range exceeding 0 °. The method of claim 1,
The first direction is a lower end direction of the first light distribution unit,
The second direction is a double light distribution structure that is inclined less than 90° in a range exceeding 0° with respect to the lower end direction of the first light distribution unit. The method of claim 1,
The first light distribution unit is provided in a shape having one parallel surface,
The second light distribution part is a double light distribution structure provided in any one shape of a polyhedron including a curved surface, a pyramid, a truncated pyramid, and one or more inclined surfaces. The method of claim 1,
The second light distribution portion is a double light distribution structure for dissipating heat at a level equal to or higher than that of the first light distribution portion. The method of claim 1,
Further comprising a connection portion spaced apart from the first light distribution portion and the second light distribution portion by a predetermined distance,
The connection unit may include a double light distribution structure configured to control an overlapping section of the light emitted from the first light distribution unit and the light emitted from the second light distribution unit by adjusting a distance between the first light distribution unit and the second light distribution unit. explosion-proof lights. delete The method of claim 1,
The heat dissipation member is provided including a carbon allotrope coating film, and the carbon allotrope coating film is coated on one or more of one surface of the heat dissipation member or a heat dissipation fin protruding from one surface of the heat dissipation member. 9. The method of claim 8,
The second heat sink is a double light distribution structure explosion-proof lamp in which the carbon allotrope coating film is coated to a thickness equal to or greater than that of the first heat sink. The method of claim 1,
a first power supply unit for supplying power to the first and second substrates; and
A second power supply unit for supplying power to the auxiliary substrate; further including,
A double light distribution structure explosion-proof lamp for supplying independent power to each of the first and second substrates and the auxiliary substrate. 11. The method of claim 10,
Further comprising a wireless amplifier module connected to the first power supply unit and the second power supply unit,
A double light distribution structure explosion-proof lamp for controlling the power supplied to the first light distribution unit and the second light distribution unit through wireless communication. The method of claim 1,
The first substrate is a double light distribution structure explosion-proof lamp having an inclination of 5 to 30° in the circumferential direction. 10. The method according to claim 8 or 9,
The carbon allotrope coating film is a double light distribution structure explosion-proof lamp comprising at least one selected from carbon nanotubes (CNT), carbon nanofibers (CNF), graphene, and graphene oxide. 13. A lighting system comprising two or more double light distribution structure explosion-proof lamps of any one of claims 1 to 6 and 8 to 12, wherein the two or more double light distribution structure explosion-proof lamps are spaced apart from each other by a predetermined distance.

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