KR100955869B1 - Led lamp - Google Patents

Abstract

PURPOSE: An LED(Light Emitting Diode) lamp is provided to improve light distribution efficiency by combining a light diffusion directional LED with an optical lens. CONSTITUTION: An LED lamp comprises a case, a light emitting device(3), a heat transmission unit(7) and a convection accelerating unit(9). The case has a reflective unit. The light emitting device is arranged inside the case to emit light. A heat transmission unit divides the inner space of the case into two parts. The heat transmission unit is coated with a nano tube layer and discharges the heat from the light emitting device. A convection accelerating unit accelerates the convection speed of the heat transmitted by the heat transmission unit.

Description

LED luminaire {LED LAMP}

The present invention relates to an LED luminaire, and more particularly, by improving the heat dissipation structure, the heat generated from the LED light emitting element in the natural convection state can be optimally dissipated, and the light diffusion direction to compensate for the linearity of the LED light source A high efficiency structured integrated LED luminaire having an LED having.

In general, an LED device (Light Emitting Diode (LED)) is a kind of semiconductor used to send and receive signals by converting an electrical signal into light using the characteristics of the compound semiconductor.

LED luminaires using such LED elements have recently been widely used due to their semi-permanent lifespan. That is, the LED luminaire is a system which emits light by arranging a plurality of LED elements and supplying power to the LED elements.

The LED luminaires are environmentally friendly by using LEDs as compared to conventional sodium lamps or mercury lamps, and their use is further increased due to the lifespan of 100,000 hours or more.

In addition, the LED luminaire consumes lower power than discharge lamps, and has high color temperature, good visibility, and good color rendering.

However, in the related art, in order to solve the heat dissipation problem, a forced cooling method in which a coolant tube is installed in the LED luminaire is applied or an expensive aluminum die-casting method is used. In this case, the heat dissipation structure of the heat is inefficient and the manufacturing cost increases. There is this.

In addition, although the planar structure of the LED luminaire is improved to a curved shape in order to enlarge the LED lighting range, in this case, there is a problem that the heat dissipation performance is reduced and the life of the LED element is reduced.

Therefore, the curved surface is formed on the surface of the LED luminaire in order to increase the light distribution curve, in this case, there is a complicated process for forming the curved surface of the LED luminaire.

Therefore, the present invention has been proposed to solve the above problems, and an object of the present invention is to heat the heat generated from the LED light emitting device to the outside through a heat radiation system consisting of a carbon nanotube layer, a transfer plate, and a heat radiation fin. The discharged heat is supplied to the two countries and the cooling tube to increase the internal temperature of the nations, so that the outside air is sucked into the cooling tube, which can accelerate the convection of heat due to the pressure generated by the temperature difference with the nations. It is to provide LED luminaires.

In addition, another object of the present invention is to provide a high-efficiency LED luminaire with improved performance and lifespan of the entire lighting by combining the light diffusion directional LED and the optical lens.

In order to achieve the object as described above, the present invention forms an appearance, the case is provided with a reflecting portion, the heat dissipation hole is formed in both covers; A light emitting element provided in the case to emit light; A heat transfer means provided in the case and partitioning an inner space of the case into two parts, and a nanotube layer is applied to radiate heat generated from the light emitting device to the outside; And provided in one of the spaces of the two portions partitioned by the heat transfer means, and the heat transferred by the heat transfer means is transferred to the space so that the heat is caused by a pressure difference due to a temperature difference with the outside of the case. It provides an LED luminaire comprising a convection acceleration means that can accelerate the convection speed of heat by discharging to the outside through the heat dissipation hole.

The present invention forms the appearance, the case is provided with a reflective portion, the heat dissipation hole is formed in both cover; A light emitting element provided in the case to emit light; A transfer plate provided in the case and partitioning the inside of the case up and down, a first nanotube layer disposed on a surface of the transfer plate, and transferring heat, and radiating heat transferred through the transfer plate to the atmosphere. Heat transfer means composed of heat dissipation fins; And convective acceleration means provided in an upper space of the case partitioned by the transfer plate of the heat transfer means to accelerate the convection speed of heat, wherein the convective acceleration means is in an inner space of the case partitioned by the heat transfer means. It is provided in one side upper space, the cylindrical body is arranged in the longitudinal direction of the case and communicates with the heat dissipation hole, so as to correspond to the first heat room and the second nanotube layer formed of a carbon material on the outer peripheral surface; It is disposed in the interior and the empty space is in communication with the heat dissipation hole, the second heat room is formed in the longitudinal direction between the second heat room, the third nanotube layer of carbon material is formed on the outer peripheral surface The outside air can be radiated by the flow, and the temperature difference with the outside of the case by including a cooling tube on which the carbon nanotube layer is coated on the inner and outer surfaces By the pressure difference by the heat is discharged to the outside through the heat dissipation hole provides an LED luminaire, characterized in that to accelerate the convection speed of heat.

As described above, in the LED luminaire according to the present invention, the heat generated from the LED light emitting device is discharged through the carbon nanotube layer, the transfer plate, and the heat dissipation fin, and the heat is discharged to the heat radiator and the cooling tube to improve the internal temperature of the radiator. By increasing the outside air is sucked into the cooling tube there is an advantage that can accelerate the convection of heat due to the pressure generated by the temperature difference with the heat.

In addition, by combining the light diffusing directional LED and the optical lens there is an advantage that the performance and life of the entire lamp is improved.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the LED luminaire according to the present invention.

1 is a perspective view showing an LED luminaire having a heat dissipation device according to the present invention, Figure 2 is a view showing the structure of the line "AA" of Figure 1, Figure 3 is a side view, Figure 4 is a plan view of Figure 3 to be.

As shown, the LED luminaire proposed by the present invention is a method for generating light using the LED element, it can be used as a security light, street light, lighting.

The LED luminaire has a case (1) forming an appearance and provided with a reflection; A plurality of light emitting elements 3 provided inside the case 1 and having improved light distribution efficiency; Heat transfer means (7) provided in the case (1) to divide the inner space of the case (1) into two parts, and a nanotube layer is applied and radiate heat generated from the light emitting element (3) to the outside; In addition, by being provided in one of the two spaces (S1, S2) partitioned by the heat transfer means (7), the heat transferred by the heat transfer means (7) to the internal and external temperature difference of the case (1) Convection acceleration means (9) capable of accelerating the speed of convection heat due to the resulting pressure difference.

In the LED luminaire having the above structure, the plurality of light emitting elements 3 are provided on the inner side of the case 1. The light emitting device 3 emits light by arranging a plurality of LED devices and supplying power.

That is, the light emitting device 3 is composed of a substrate (not shown) on which a power circuit is formed, and an LED device (LED Materials) that generates light by arranging at least one on the substrate.

The light emitting device 3 preferably includes a white LED for generating white light. Of course, depending on the purpose of the use of the luminaire, red or green LEDs can also be appropriately arranged.

Therefore, when the power supplied from the outside is supplied to the substrate, the light emitting device 3 emits light.

In this case, the light emitting element 3 is composed of an optical directional LED (L) and an optical lens (4) mounted to the outside of the optical directional LED (L).

Therefore, the light emitted from the LED L can be uniformly spread in all directions while passing through the optical lens 4.

In addition, the case 1 may be provided with a light transmitting cover C to prevent foreign substances, etc., from flowing into components such as a light emitting device.

The heat transfer means 7 includes a transfer plate 11 disposed inside the case 1, a first nanotube layer 13 disposed on the surface of the transfer plate 11, and the transfer plate 11. It includes a heat radiation fin (15) for radiating heat transmitted through the (11) to the atmosphere.

In such heat transfer means, the transfer plate 11 has a material having excellent thermal conductivity, for example, aluminum.

In addition, the transfer plate 11 seals the lower portion of the case 1 to partition the inner space of the case 1 into an inner space S1 and an outer space S2.

In addition, the light emitting element 3 and the first nanotube layer 13 are provided below the transfer plate 11.

Therefore, heat generated from the light emitting device 3 is transmitted to the transfer plate 11 through the first nanotube layer 13, and the heat transferred to the transfer plate 11 is transferred to the outside through the heat radiation fins 15. Can be dissipated.

In this case, the first nanotube layer 13 preferably means a nanotube layer made of carbon.

The first nanotube layer 13 is a macromolecule (macromolecule) in which a graphite sheet is rounded to a nano size diameter, and has excellent thermal conductivity.

Such carbon nanotubes exhibit the characteristics of metals or semiconductors depending on the angle and structure of the graphite surface being dried.

In addition, single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, and bundles, depending on the number of bonds forming a wall. It is divided into carbon nanotubes.

Such carbon nanotubes have thermal conductivity at room temperature in the range of 1,800 to 6,000 [W / (m.K)]. In addition, the carbon nanotubes exhibit breakthrough conductivity while exhibiting quantum behavior, and the mechanical properties of the carbon nanotubes are about 10 to 100 times stronger than those of steel, and are resistant to physical impact.

Therefore, the heat transferred from the light emitting element 3 is quickly transferred to the transfer plate 11 by the first nanotube layer 13 having the above-described physical properties.

In this case, the first nanotube layer 13 may be uniformly coated on the entire bottom surface of the transfer plate 11 or may be partially applied.

As described above, heat generated from the light emitting device 3 may be transferred to the transfer plate 11 through the first nanotube layer 13, and radiated to the outside through the heat dissipation fin 15.

The heat dissipation fins 15 are protruded from the outer surface of the case 1, and are spaced apart from each other by a predetermined interval. In addition, the heat radiating fins 15 may be made of a material having excellent thermal conductivity such as aluminum. Therefore, heat transferred to the heat dissipation fins 15 may be radiated to the atmosphere.

On the other hand, the convective acceleration means (9) is provided in the internal space (S1) of the case (1) and the first and second heat sinks (19, 21) to be a moving passage of heat, and the first and second heat sinks (19) It is disposed between the, 21, and comprises a cooling tube 17 for discharging heat by the flow of external air.

In more detail, the first heat sink 19 is provided at one side of the inner space of the case and occupies a predetermined volume. A plurality of heat dissipation fins 15 protrude from the outer surface of the first heat sink 19, and the second nanotube layer 25 is coated on the surface thereof.

The second heat 21 is disposed in the inner space opposite to the first heat 19. A plurality of heat dissipation fins 15 protrude from the outer surface of the second heat sink 21, and a third nanotube layer 29 is coated on the surface thereof.

In this case, the first and second heat sinks 19 and 21 are formed of a material having excellent thermal conductivity. In addition, the second and third nanotube layers 25 and 29 are preferably carbon nanotubes.

Therefore, heat transmitted through the transfer plate 11 is transferred to the first and second heat sinks 19 and 21.

In addition, the heat transferred through the transfer plate 11 is transferred to the first and second heat sinks 19 and 21, thereby increasing the internal temperature of the heat sinks 19 and 21.

As such, when the internal temperature of the nations 19 and 21 rises, convection of heat occurs and heat is transferred to both sides along the interiors of the nations 19 and 21.

In this case, a plurality of heat dissipation holes 23 are formed in both covers 22 of the case, and the heat dissipation holes 23 communicate with the first and second heat dissipation units 19 and 21.

Therefore, heat transferred to both sides of the first and second heat sinks 19 and 21 may be radiated to the outside through the heat dissipation hole 23.

At this time, since the internal temperature of the first and second heat sinks 19 and 21 is higher than the external temperature of the case 1, the pressure difference is caused by the temperature difference between the inside and the outside of the first and second heat sinks 19 and 21. Is generated.

Therefore, when the pressure difference inside and outside the first and second heat sinks 19 and 21 occurs, the velocity of heat flowing inside the first and second heat sinks 19 and 21 increases according to the pitot tube principle. Can speed up

On the other hand, the cooling tube 17 is disposed in the longitudinal direction between the first and second heat sinks 19 and 21, and has a cylindrical shape.

The cooling tube 17 preferably has a cylindrical shape, the inside is hollow, and both ends thereof have an open shape in communication with the outside atmosphere.

Therefore, the outside air of the luminaire may flow into the cooling tube 17.

The carbon nanotube layer is also applied to the inner side and the outer side of the cooling tube 17.

Therefore, the heat transferred from the transfer plate 11 to the cooling tube 17 can be quickly discharged to the outside by the air flowing inside the cooling tube.

At this time, the pressure difference due to the temperature difference between the cooling tube 17 and the first and second heat sinks 19 and 21 may occur, thereby increasing the amount of heat convection.

Moreover, the carbon nanotube layer applied to the cooling tube 17 can be quickly discharged to the outside.

As a result, heat generated from the light emitting element 3 is discharged to the outside through the first nanotube layer 13 and the transfer plate 11, and at the same time, the first and second heating units 19 and 21 are also heated together. As a result, the internal temperature of the heat sink is increased, and at this time, a pressure difference occurs between the first and second heat sinks 19 and 21 and the cooling pipe 17, and the convection speed of heat increases due to the difference in pressure. The heat dissipation effect can be expected.

Hereinafter, the heat dissipation process of the LED luminaire according to the present invention with reference to the accompanying drawings will be described in more detail.

As illustrated in FIGS. 1 to 4, the heat dissipation process of the LED luminaire proposed by the present invention will be described. First, heat generated from the light emitting element 3 is conducted to the first nanotube layer 13.

Heat conducted to the first nanotube layer 13 may be rapidly conducted to the transfer plate 11 due to the high thermal conductivity of the carbon nanotubes. The heat conducted to the transfer plate 11 moves along the transfer plate 11 to the heat dissipation fins 15 of the case 1, and may be transferred to the air by the heat dissipation fins 15.

In this case, the heat radiating fins 15 may be disposed on all sides of the case 1 so that heat may be transmitted to the air more efficiently.

In addition, when the heat is conducted through the transfer plate 11, the heat is also convexed to the first and second heat sinks 19 and 21, thereby increasing the internal temperature of the first and second heat sinks 19 and 21. .

When the internal temperatures of the first and second heat sinks 19 and 21 rise, heat is transferred to both sides by convection of heat, and the heat transferred to both sides radiates the heat radiation holes 23 of the cover 22. It can be radiated to the outside through.

At this time, since the internal temperature of the first and second heat sinks 19 and 21 is higher than the external temperature of the case 1, a pressure difference is generated by the temperature difference between the inside and the outside.

Therefore, when the pressure difference inside and outside the nations 19 and 21 occurs, the speed of heat flowing through the interiors of the nations 19 and 21 increases according to the pitot tube principle, thereby accelerating the speed of heat convection.

In addition, heat may also be transferred from the transfer plate 11 to the cooling tube 17, and the heat transferred to the cooling tube 17 may be quickly moved to the outside by the air flowing inside the cooling tube 17. May be discharged.

At this time, the pressure difference due to the temperature difference between the cooling tube 17 and the first and second heat sinks 19 and 21 may occur, thereby increasing the amount of heat convection.

In addition, the carbon nanotube layer is applied to the inner and outer surfaces of the cooling tube 17, so that heat can be discharged to the outside more quickly.

As a result, in the process in which heat generated from the light emitting device 3 is discharged to the outside through the carbon nanotube layer 13 and the transfer plate 11, the first and second heat radiators 19 and 21 and cooling are performed. The tube 17 is heated together, and a pressure difference occurs due to the temperature difference between the first and second heating units 19 and 21 and the cooling tube 17, and consequently, the heat convection speed is increased, thereby providing a more efficient heat dissipation effect. You can expect.

In addition, since the light diffusion directional LED L and the optical lens 4 are coupled to each other, the light distribution efficiency may be improved, thereby improving performance and lifespan of the entire lamp.

1 is a perspective view showing an LED luminaire according to a preferred embodiment of the present invention.

2 is a view showing the internal structure of the LED luminaire shown in FIG.

3 is a side view of the LED luminaire shown in FIG. 1.

4 is a plan view of the LED luminaire shown in FIG.

Claims (5)

A case having an appearance and having a reflection part and having heat dissipation holes formed in both side covers; A light emitting element provided in the case to emit light; A heat transfer means provided in the case and partitioning an inner space of the case into two parts, and a nanotube layer is applied to radiate heat generated from the light emitting device to the outside; And It is provided in one of the two spaces partitioned by the heat transfer means, the heat transferred by the heat transfer means is transferred to the space by the pressure difference due to the temperature difference with the outside of the case by the heat transfer LED luminaires comprising convective acceleration means capable of accelerating the convection speed of heat by discharging to the outside through the heat dissipation hole. A case having an appearance and having a reflection part and having heat dissipation holes formed in both side covers; A light emitting element provided in the case to emit light; A transfer plate provided in the case and partitioning the inside of the case up and down, a first nanotube layer disposed on a surface of the transfer plate, and transferring heat, and radiating heat transferred through the transfer plate to the atmosphere. Heat transfer means composed of heat dissipation fins; And Convection acceleration means provided in the upper space of the case partitioned by the transfer plate of the heat transfer means to accelerate the convection speed of heat, The convective acceleration means is provided in one upper space of an inner space of the case partitioned by the heat transfer means, is disposed in the longitudinal direction of the case and is in the shape of a tubular body communicating with the heat dissipation hole, and a second carbon material on the outer circumferential surface thereof. The first heat is formed the nanotube layer, A second heating member disposed to correspond to the first heating member, an empty space formed therein, communicating with the heat dissipation hole, and having a third nanotube layer formed of carbon on an outer circumferential surface thereof; It is disposed in the longitudinal direction between the first and second heat sinks can be radiated by the flow of external air, and by including a cooling tube is coated with a carbon nanotube layer on the inner and outer surfaces LED luminaires, characterized in that the heat is discharged to the outside through the heat dissipation hole due to the pressure difference due to the temperature difference with the outside of the case to accelerate the convection speed of the heat. The method of claim 1, The heat transfer means is disposed inside the case and partitions the inside of the case up and down, the first nanotube layer of carbon material disposed on the surface of the transfer plate to transfer heat, and through the transfer plate LED luminaires comprising heat dissipation fins that dissipate the transferred heat into the atmosphere. The method of claim 1, The convective acceleration means is provided in an upper space on one side of the inner space of the case partitioned by the heat transfer means, is disposed in the longitudinal direction of the case and is in the shape of a cylinder communicating with the heat dissipation hole, and a second carbon material on the outer circumferential surface thereof. The first heat is formed the nanotube layer, A second heating member disposed to correspond to the first heating member, an empty space formed therein, communicating with the heat dissipation hole, and having a third nanotube layer formed of carbon on an outer circumferential surface thereof; The LED luminaire comprising a cooling tube disposed in the longitudinal direction between the first and the second heat dissipation can be radiated by the flow of external air, the carbon nanotube layer is applied to the inner and outer surfaces. The method of claim 4, wherein The light emitting device includes an LED luminescent light emitting light and an optical lens mounted to the outside of the optical directional LED.

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