KR20110006648U - LED Light Module For Explosion Proof Lamp - Google Patents

Abstract

The present invention relates to an LED light source module for explosion-proof lamps for replacing the heating lamp light source currently used in explosion-proof lamps with an LED light source, and does not manufacture a new explosion-proof lamp housing, and can easily replace only a light source while using a conventional explosion-proof lamp housing. It relates to an LED light source module for explosion proof lamps. This greatly reduces the replacement cost. In addition, the LED light source module according to the present invention is used to be fully inserted into the interior of the conventional explosion-proof lamp housing, further provides the effect of improving the safety compared to the conventional LED explosion-proof lamp.

Description

LED Light Module for Explosion-proof Lamps {LED Light Module For Explosion Proof Lamp}

The present invention relates to a LED light source module that can replace a heat source light source such as an incandescent lamp as an LED light source while using the same explosion-proof lamp housing.

In general, a place where an explosion hazard atmosphere is formed due to flammable gas and steam or dust, or a plant that handles various flammable substances is an area where constant danger exists. These hazardous areas are classified by the National Electric Code (NEC) or the International Electro-technical Committe (IEC) into roughly zero, one, and two hazardous locations. Class 0 and Class 1 of these hazardous areas are always at high risk of fire, explosion and heat generation, and electrical appliances used are usually designed to be explosion-proof.

Explosive gases can penetrate into small gaps created by the expansion and contraction that occur when the luminaire is blinking, so it is not easy to obtain explosion-proof effects even when the apparatus is sealed. In general, explosion-proof lamps have inert gas introduced into the air so that they do not ignite even if an explosive gas penetrates into the apparatus and causes an explosion. Such explosion-proof lamps generally use incandescent lamps, fluorescent lamps, three-wavelength lamps as light sources, and thus have large size and high power consumption. In particular, when a discharge lamp such as a fluorescent lamp is used as a light source, the explosion-proof lamp uses a ballast to control overcurrent, which is bulky, high in power consumption, and often exposed to an unstable state. In addition, such an explosion-proof light has a problem that when the heat dissipation of the light source and the ballast is not properly made, the life may be shortened due to overheating and cause a very dangerous situation.

As one of such explosion-proof electric devices, the conventional technology of explosion-proof lamps, which are industrial lighting devices, includes a lamp 11 having glass balls, such as a high pressure mercury lamp, a high pressure sodium lamp, a metal halide lamp, and the like. And a pressure resistant casing 130 which prevents the explosion of the lamp from leading to the secondary explosion when a spark is generated due to overheating or the like.

The pressure-resistant casing 130 has a pressure resistance to withstand the pressure when the explosive gas or vapor explodes due to the electric spark of the lamp, etc. in the interior of the container, and may be flammable to the external explosive gas through the joint surface, the opening, etc. Confidentiality is required.

Therefore, the casing, such as explosion-proof, has a structure in which the glass globe 132 is tightly bound to the casing body 131 made of a metal material, and is provided in a rigid structure in which a protective net 133 is formed outside the glass globe 132. to be.

In addition, since the lamp 110 is formed in the form of a glass sphere, the glass globe 132 should have a sufficient internal space for accommodating the glass sphere, and because the glass sphere has to withstand the breakdown force when the glass sphere explodes The casing including a thick thick and large size is composed of a heavy explosion-proof structure.

In the related art, since the lamp emits light due to heat emission characteristics, sparks are frequently generated due to heat, and there is a problem of danger due to heat generation, and thus lamp replacement is frequent. Since it is necessary to open and close the lamp replacement and handling was very difficult problem.

Recently, although explosion-proof lamps using LED lamps have been developed, various problems have been pointed out in terms of safety as a structure in which LED lamps are completely enclosed into the explosion-proof lamp housing. Particularly, in the case of the conventional LED lamps, The explosion-proof housing can not be used as it is, there was an economic problem that must replace all the explosion-proof lights to produce a new housing.

In order to solve the above problems, the present invention aims to reduce size and power consumption by using an LED lamp as a light source. In addition, by providing an LED lamp sealed inside the explosion-proof lamp to solve the safety problem of the conventional LED explosion-proof lamp.

In addition, the main purpose of simplifying the internal structural design to replace only the light source with the LED lamp while using the same housing of the conventional explosion-proof lamp. That is, there is an advantage that can be used as it is, explosion-proof, etc. existing in the past.

In addition, a heat dissipation structure device is provided so that heat generated from the LED module or the device can be quickly dissipated in a short time, and the main purpose is to extend the life of the product and maximize safety.

In addition, by installing a reflector in front of the LED module or element, the main purpose of the light from the LED module or element to shine at a predetermined angle, and at the same time maximize the luminance improvement by the light diffusion.

The present invention provides the following problem solving means to solve the above problems.

Explosion-proof lamp LED light source module is inserted and used in an enclosed environment inside the explosion-proof lamp housing according to the present invention, combined with the explosion-proof body body,

An LED module unit provided with an LED element on a printed circuit board,

A heat pump which is provided at one end with a contact portion in direct contact with the LED module portion, a heat pump having a shape of a hollow portion for transferring internal heat in a convection manner,

A heat dissipation fin is formed at an outer side, and a body portion provided at the inner side to be inserted to abut each other;

A conductive plate provided to contact the heat pump and transferring heat of the heat pump to the explosion-proof body portion in a thermally conductive manner;

Is connected to the conductive plate, and includes a coupling portion coupled to the explosion-proof body portion,

The hollow part inside the heat pump is sealed by the conductive plate and the contact part,

It is fixed to the support member fixed to the body portion includes a reflecting plate provided in front of the LED module unit to diffuse the light generated from the LED module unit to the front.

The present invention provides a structure that replaces only a light source with an LED lamp from a conventional heating lamp while using a housing such as a conventional explosion-proof lamp to reduce power consumption of the explosion-proof lamp, and newly manufacture the housing in the process of replacing the LED lamp. There is an effect to improve the economics by not doing. In addition, the LED lamp is provided to be completely sealed inside the explosion-proof lamp housing to further improve safety.

In addition, by providing a heat dissipation structure device to be quickly radiated heat generated from the LED module or device, it has the effect of extending the life of the product and maximizing safety.

In addition, by installing a reflecting plate in front of the LED module or element, there is an effect to maximize the brightness improvement by the light diffusion at the same time to illuminate the light from the LED module or element at a predetermined angle.

1 is a plan view coupled to the explosion-proof LED light source module for explosion-proof body according to the present invention.
Figure 2 is a plan view of the LED light source module for explosion proof lamp according to the present invention.
Figure 3 is an exploded plan view of the LED light source module for explosion proof according to the present invention.
Figure 4 is a perspective view of the LED light source module for explosion proof according to the present invention.
5 is an LED module unit used in the explosion-proof LED light source module according to the present invention.
Figure 6 is a cross-sectional view of the thermoelectric semiconductor used in the LED light source module for explosion-proof lamps according to the present invention.
7 is a plan view of another embodiment of the LED light source module for explosion-proof lamps according to the present invention.
8 is a plan view of a conventional explosion-proof lamp.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a plan view of the explosion-proof LED light source module and explosion-proof body body coupled to the present invention. The explosion-proof LED light source module according to the present invention is intended to use the explosion-proof housing that is widely used in the prior art. Therefore, since the heat generating lamp is removed from the conventional explosion-proof lamp, and instead of using the LED light source module according to the present invention, it is not necessary to manufacture a new explosion-proof lamp housing, there is an economical effect.

In general, a conventional LED explosion-proof light is provided in the explosion-proof light body portion 21, the power supply unit 23 provided on the upper side of the explosion-proof light body portion 21, and the LED provided below the explosion-proof light body portion 21. The light source module mounting part 24 and the cap 22 which completely encloses the LED light source module provided in the inside of an LED explosion-proof light from the outside.

As shown in Figure 1, the explosion-proof lamp LED light source module 10 according to the present invention is used is completely inserted into the explosion-proof lamp housing 20. In this respect, the present invention is technically different from the conventional LED explosion-proof lamps. Conventional LED explosion-proof lamps have a problem in that a new housing must be additionally manufactured without using a conventional explosion-proof housing.

Thus, by fully mounting the LED light source module 10 inside the explosion-proof lamp housing 20 to be sealed to the outside, it should be understood that the effect is more excellent safety than the conventional LED explosion-proof lamp.

Coupling portion 16 located on the upper portion of the LED light source module 10 of the present invention is coupled to the explosion-proof light body portion 21, it is preferable to be coupled in a screw manner for convenience of coupling.

The LED module unit 30 is an LED package module for explosion-proof lamps, and uses an LED element made of a single light source that is easily removable and maintainable. 5 is an embodiment of the LED module unit 30. Many LED elements are formed in printed circuit boards, such as a PCB board | substrate. The LED module unit 30 is preferably a circular or rectangular shape, but is not limited thereto.

LED device is a kind of semiconductor that converts applied current into light. Because it is small, low power consumption and high reliability, it is widely used in home appliances, lighting devices, optical storage devices, photometry equipment, and display devices. have. The wavelength of the light output from the LED device is determined by the material constituting the semiconductor. In the case of the commercially available infrared, red, yellow, and green LED devices, a group 3-5 compound semiconductor is mainly used, and green, blue, and ultraviolet light are used. In the case of LED devices, GaN compound semiconductors are mainly used. The structure and operation principle of such an LED device will be apparent to those skilled in the art, so detailed description thereof will be omitted.

The feature of the LED module unit 30 used in the present invention is that the electric wire 32 for supplying power is provided on the side of the LED module unit 30. Conventionally, wires were provided from the back side of the LED module portion used for the LED explosion-proof lamp. In this case, since the wires must be connected to the LED module part from the power supply unit of the LED explosion-proof light, the space between the LED module unit and the power supply unit should be opened, and in the case of being opened, the heat generated from the LED module unit is thermally conducted. As a result, the efficiency of exiting to the outside is reduced. Therefore, the present invention provides a wire to the side to remove the unnecessary opening between the LED module and the power supply unit.

Figure 2 is a plan view of the explosion-proof LED light source module according to the present invention, Figure 3 is an exploded plan view of the LED light source module for explosion-proof lamp according to the present invention.

In front of the LED module unit 30 is provided with a reflecting plate 13 for diffusing the generated light to the front. The reason for arranging the reflector plate 13 in front of the LED module unit 30 is to illuminate the generated light at a predetermined angle and to improve luminance due to light diffusion. In particular, the LED light source module 10 according to the present invention is to use a conventional explosion-proof lamp housing as it is, and to improve the efficiency of heat generation. In particular, the present invention is an important technical feature to discharge the heat generated from the LED module unit 30 to the explosion-proof body portion 21 through the heat pump 12, an important technical feature, the reflector plate 13 LED module unit This is because such a technical effect is difficult to be achieved when disposed behind the 30.

It is fixed to the support member 14 fixed to the body portion is provided in front of the LED module unit, one end is provided to contact the front of the LED module unit is a reflecting plate for diffusing the light generated from the LED module unit to the front It is preferable.

The reflecting plate 13 is provided in a shape having a curvature toward the front of the LED module unit 30. In the present specification, the front means a direction opposite to the direction in which the power supply unit 23 is generally referred to the LED module unit 30 in the direction that the explosion-proof light is directed toward the light.

The central portion of the reflector plate 13 is preferably opened to allow the light generated from the LED module portion 30 to go outward.

Heat generated in the LED module unit 30 is conducted through the heat pump 12. The heat pump 12 uses a metal material such as Cu having good thermal conductivity so as to transfer heat generated from the LED module unit 30 to the heat dissipation structure in a short time. Thus, one end of the heat pump 12 is provided with a contact portion 12a that abuts the LED module portion 30 to improve thermal conductivity with the LED module portion 30.

The meaning of abutment used in the present specification means that the two structures are in close contact with each other.

The heat pump 12 is preferably in the shape of a cylinder or a pipe having a hollow portion. However, it is more preferable that it is provided in the form of a hollow cylinder. This is because heat transfer by conduction is much more efficient than convection, because when the hollow portion has a reduced area of heat conduction.

And in the case of a pipe shape with a hollow part, it is preferable that the thickness is much larger than the radius of the hollow part. This is because the function of the hollow portion is to improve the heat dissipation effect by the convection phenomenon, because the larger the hollow portion is the area in contact with the empty space, the greater the effect of heat dissipation by the convection phenomenon.

The heat pump 12 is preferably exposed to the inside of the body portion 11 without being exposed to the outside. Heat dissipation fins are formed at the outer side of the body portion, and the heat pump 12 is inserted into the inner side so as to contact each other. A part of the heat of the heat pump 12 is moved to the body portion 11 by the body portion 11 and the heat conduction method, and is discharged to the outside by the heat radiation fins formed on the body portion (11). Body portion 11 is preferably provided with a metal material having a good thermal conductivity, such as Al in order to maximize the effect of heat dissipation.

In addition, a conductive plate 15 is provided at the end of the heat pump 12. The conducting plate 15 should be provided to abut against the explosion-proof body portion 21. This is because the heat of the heat pump 12 escapes to the body portion 21 of the explosion-proof lamp through the conduction plate 15 in a thermally conductive manner.

In general, the effect of heat dissipation is more efficient than conduction. The object of the present invention is to provide a structure that can maximize the efficiency of the conduction method having a large heat dissipation effect.

Therefore, even if the heat pump 12 is in the shape of a pipe having a hollow portion, the conductive plate 15 is preferably provided in a plate shape having no opening. That is, it is preferable that the hollow part inside the heat pump 12 is sealed by the said conductive plate 15 and the contact part 12a. In this regard, the LED light source module 10 of the present invention is different from the method of continuously forming the hollow part to pass through the wire connected to the power supply unit, and has the advantage that the heat dissipation effect is greater.

An upper portion of the conductive plate 15 is provided with a coupling portion 16 coupled to the explosion-proof body portion 21. Coupling portion 16 is a screw type so as to simplify the combination of the explosion-proof light used inherent in the LED light source module 10 and the conventional heating lamp as described above.

As another embodiment of the LED light source module 10 according to the present invention, the thermoelectric semiconductor 40 may be further provided between the LED module portion 30 and the contact portion 12a. The thermoelectric semiconductor 40 is a thermoelectric device with various names such as a thermoelectric module, a Peltier element, a ThermoElectric Cooler (TEC), and a ThermoElectric Module (TEM), and is a small heat pump (absorbing heat from a high temperature heat source and Device to heat the heat source). When DC voltage is applied to both ends of the thermoelectric element, heat is transferred from the heat absorbing portion to the heat generating portion.

FIG. 6 is a plan view of the thermoelectric semiconductor 40, and FIG. 7 is a plan view of the LED light source module in which the thermoelectric semiconductor 40 is used. In the case of using this, the heat generated from the LED module unit 30 may be more quickly supplied to the heat pump 12 to increase the heat dissipation effect.

The present invention is to replace the heat source light source currently used for explosion-proof lamps with LED light source, there is an effect that can easily replace only the light source while using a conventional explosion-proof lamp housing without producing a new explosion-proof housing. This greatly reduces the replacement cost. Therefore, the LED light source module 30 according to the present invention is used as being fully inserted into the inside of the conventional explosion-proof lamp housing, it should be understood that there is an economic effect and economical effect compared with the conventional LED explosion-proof lamps do.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the scope of the present invention is not to be construed as limited to such embodiments and / or drawings, but is determined by the matters set forth in the claims below. . In addition, it should be clearly understood that improvements, changes, modifications, etc. which are obvious to those skilled in the art described in the claims are included in the scope of the present invention.

12: heat pump, 15: conductive plate, 16: coupling portion, 21: body portion, 30: LED module portion, 40: thermoelectric semiconductor

Claims (1)

In the LED light source module for explosion-proof lamps that are inserted into and used in an enclosed environment inside the explosion-proof lamp housing and are combined with the explosion-proof lamp body,
An LED module unit provided with an LED element on a printed circuit board,
A heat pump which is provided at one end with a contact portion in direct contact with the LED module portion, a heat pump having a shape of a hollow portion for transferring internal heat in a convection manner,
A heat dissipation fin is formed at an outer side, and a body portion provided at the inner side to be inserted to abut each other;
A conductive plate provided to contact the heat pump and transferring heat of the heat pump to the explosion-proof body portion in a thermally conductive manner;
Is connected to the conductive plate, and includes a coupling portion coupled to the explosion-proof body portion,
The hollow part inside the heat pump is sealed by the conductive plate and the contact part,
It is fixed to the support member fixed to the body portion is provided in front of the LED module unit includes a reflecting plate for diffusing the light generated from the LED module unit to the front,
Explosion proof LED light source module.

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