KR100945175B1 - Led lighting apparatus - Google Patents

Abstract

PURPOSE: An LED lamp is provided to improve heat discharge by directly contacting the bottom of a PCB(Printed Circuit Board) module with the bottom of a case. CONSTITUTION: A plurality of LEDs is mounted on a PCB module(10). The PCB module is arranged in the inner bottom of a case(20). The converter includes an AC input terminal, an AC output terminal, and a DC output terminal. A reflector is formed in the inner surface of the case to reflect the light to the opening direction of the case. The bottom of the case and the bottom of the PCB module are contacted with each other to discharge the heat from the LED. A plurality of heat discharge holes(60) are formed on the side of the case of the coupling groove.

Description

LED Lighting Apparatus {LED Lighting Apparatus}

The present invention relates to a lamp using a light emitting diode, and more particularly, to improve the heat dissipation effect by directly contacting the PCB surface on which the light emitting diode is mounted and the bottom surface of the case in which the PCB is installed to improve the operation efficiency and reliability of the product. It relates to a light emitting diode lamp.

In the case of conventionally used lighting lamps, incandescent lamps or fluorescent lamps are mainly used as indoor light sources used in homes or offices, and mercury lamps or sodium lamps are mainly used as outdoor lights such as street lamps and security lamps.

However, the conventional light sources have a problem that the energy consumption is large compared to the brightness and the lifespan is short, so that the amount of light rapidly decreases with time, and thus periodic management is necessary. There was a problem acting as a cause of environmental pollution.

Therefore, in order to solve this problem, lighting lamps using light emitting diodes (LEDs) with low power consumption and long lifespan as light sources have been developed and released in recent years.

The light emitting diode (LED) has a junction structure of a P-type and an N-type semiconductor, and is an optoelectronic device that emits light of energy corresponding to a bandgap of a semiconductor by combining electrons and holes when a voltage is applied. Since time is fast and power consumption is low as low as 20% compared to general light bulbs, it is widely used in various fields such as indoor and outdoor lighting, street lighting, signage, structure lighting, and decorative lighting.

Since such light emitting diodes exhibit optimal operating efficiency only when they are maintained at a temperature of 50 ° C. to 60 ° C. or below at a normal room temperature of 25 ° C., the above conditions must be maintained to maintain the brightness and lifetime (more than 50,000 hours) required for the light emitting diode lamps. I can guarantee it.

However, currently used light emitting diode lamps are not able to maintain the above-described optimal operating state because the temperature rises to 80 ℃ or more when operating the power supply, and as a result, the brightness of the light emitting diode is lowered and the lifetime is also increased. The problem is that it becomes much shorter.

Therefore, in order to solve this problem, a lamp having a heat sink attached to a rear surface of a light emitting diode has recently been manufactured, but even in this case, heat is still generated because heat generated from the light emitting diode cannot effectively pass through the PCB substrate to the rear side. There is a problem in that the efficiency of the lamp is low because many and the temperature is high.

In addition, since most of the materials used as heat sinks are made of aluminum, which is required to import raw materials, it has a disadvantage of not only outflow of foreign currency but also an increase in material costs according to exchange rates, and a weak strength as a structural material for lighting.

In addition, in the case of a conventional light emitting diode lamp, a converter for converting commercial AC power into a DC power source is assembled on the front of the lamp for a slim design. In this case, when the lamp is turned on, the shadow of the converter is generated to reduce illumination. And there is a disadvantage that causes a decrease in vision and discomfort of the user.

In addition, in the case of indoor lightings (specifically, indoor ceiling lights) in which lighting lamps of the same design are installed continuously, since AC power supplied to each lighting lamp is individually connected by using wires, the wiring structure becomes complicated, There is a problem that causes a malfunction or fire, such as lighting due to poor wiring connection.

The present invention is to solve the above problems of the prior art, the object of the present invention is that the heat generated by the operation of the light emitting diode is easily discharged to the rear of the PCB so that the heat radiation through the outer surface of the case is made smoothly It is to provide a light emitting diode lighting that can improve the reliability of the lighting.

In addition, another object of the present invention is to provide a light emitting diode lamp to prevent the shadow of the converter is generated on the light emitting surface during operation of the lamp by mounting a converter for supplying DC power to the light emitting diode on the side of the lamp case. will be.

In addition, another object of the present invention is to provide a DC power supply to each light emitting diode module through a DC line and an AC line patterned on the light emitting diode PCB substrate installed in each light when a plurality of lamps are installed in series By connecting the AC power supplied to the lamp of the lighting structure to provide a light-emitting diode lamp significantly simplified.

In addition, another object of the present invention is to provide a light emitting diode illumination lamp that makes the aesthetics of the illumination lamp by making the cover installed on the light emitting surface of the illumination lamp coupled to the lamp case by magnetic force.

In order to achieve the above object, a light emitting diode lamp according to the present invention includes a PCB module having a plurality of light emitting diodes mounted thereon, and the light emitted from the light emitting diodes emitted from an upper portion of an inner bottom surface of which at least one PCB module is installed. Including an opening formed case, the inner surface of the case is composed of a reflecting plate for reflecting light in the opening direction, the bottom surface of the case consisting of the reflecting plate and the bottom surface of the PCB outside the heat generated from the light emitting diode Directly in contact with each other to discharge to, characterized in that a plurality of heat dissipation holes are formed on the side of the case adjacent to the bottom surface on which the PCB module is installed.

The apparatus may further include at least one converter having an AC input terminal to which AC power is input, an AC output terminal for outputting the AC power, and a DC output terminal for converting and outputting the AC power to DC power, respectively, on each side of the case. At least one coupling groove to which the converter is fitted is formed, and each of the PCB modules has a DC input terminal connected to the DC output terminal by a connector and a DC wiring connecting the DC input terminal and each light emitting diode to each other; The AC input terminal, the AC output terminal and the AC wiring connecting the AC input terminal and the AC output terminal is characterized in that the patterned by.

In addition, the converter is provided for each PCB module, and when AC power is input to any one of the converters, the AC input and output terminals of each of the PCB modules and the AC input and output terminals of each of the converters are connected by a connector. The AC power is also supplied to the converter.

In addition, the cover further comprises an acrylic cover coupled to the flange formed to extend outwardly from the circumference of the opening to close the opening, wherein the cover is a magnet provided on the flange and a magnetic body provided on the edge of the cover It is characterized in that it is coupled to the flange by a magnetic force acting between the cover.

In addition, the lamp is a down light (down light), the case is composed of an outer case and the inner reflector is coupled, the acrylic material is coupled to the flange formed to extend outward from the periphery of the opening of the case to close the opening Further comprising a cover, characterized in that the plurality of heat dissipation holes are formed in the inner reflector.

The cover may include a first plastic cover fitted to an outer circumferential surface of the flange along an outer circumference of the cover, and a second plastic fitted to an outer circumferential surface of the flange from an upper edge of the cover and the first plastic cover. It is coupled to the flange by a cover, characterized in that at least a portion of the overlapping surface of the first plastic cover and the second plastic cover is bonded by ultrasonic welding.

In addition, the light emitting diode lamp is a lamp for indoor use, and is formed by cutting a portion of the back of the case and then bent out of the case, the power line holder with a through hole through which an external power line is inserted in the bent portion. It characterized in that it further comprises.

As described in detail above, the LED lamp according to the present invention is configured such that the PCB surface on which the LED is mounted and the inner surface of the casing in which the PCB is placed are in direct contact with each other so that heat generated by the LED is easily behind the PCB. It is discharged so that the heat dissipation through the outer surface of the case can be made smoothly, there is an advantage that can improve the reliability of the LED lighting.

In addition, the light emitting diode lamp according to the present invention has the advantage that it is possible to eliminate the degradation of illumination, deterioration of the user's vision and discomfort because the shadow is not generated by the converter during the operation of the lamp by the configuration of mounting the converter on the side of the case. .

In addition, the LED lighting device according to the present invention is not connected to a separate electrical wiring to each of the plurality of converters, but because the configuration is connected by a connector along the AC wiring patterned on the PCB substrate, the wiring structure is simplified, poor wiring There is an advantage that can eliminate the risk of malfunction or fire by the lighting.

In addition, since the LED lighting lamp according to the present invention is configured to couple the lamp cover by the magnetic force without forming a screw hole or the like, there is an advantage that the work process is simplified and the appearance of the lamp is beautiful.

In addition, the LED lighting device according to the present invention has an advantage of preventing the fall of the lamp by providing a power line holder in the case of indoor lighting, as well as to facilitate maintenance by tidying up the external power line supplied to the lamp.

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

1 is an exploded perspective view showing a light emitting diode lamp according to a first embodiment of the present invention, Figures 2a, 2b and 3 are a plan view, a rear view and a cross-sectional view showing a coupling state of the light emitting diode lamp shown in Figure 1, respectively. .

The light emitting diode illumination lamp according to the present embodiment includes a plurality of light emitting diodes 10a on which the PCB module 10 and 110 are mounted, and the light emitting diode 10a on the inner bottom surface 20a on which at least one of the PCB modules 10 and 110 is installed. A case 20 having an opening 20b for emitting light generated therefrom, and converters 30 and 130 for converting AC power supplied from an external power source (not shown) into DC power and supplying the DC power to the PCB modules 10 and 110. It is configured by.

At this time, in order to maximize the luminous efficiency inside the case 20, the amount is preferably provided with a reflector plate made of a material such as aluminum, iron plate, stainless steel or anodizing, but if necessary, the inner surface of the case 20 itself is The case 20 may be formed of a reflector plate or a reflector plate material. In this embodiment, a case in which the inner surface of the case 20 itself functions as a reflector will be described as an example.

In addition, the LED lamp according to the present invention is configured such that the bottom surface 20a of the case made of the reflective plate and the bottom surface of the PCB in order to quickly discharge the heat generated from the light emitting diode to the outside of the case. .

In addition, the case 20 is preferably made of a material such as iron, aluminum, aluminum die casting, cast iron, stainless steel in order to further improve the thermal conductivity.

In addition, since a plurality of heat dissipation holes 60 are formed on the side surface of the case 20 adjacent to the bottom surface 20a on which the PCB modules 10 and 110 are installed, heat transfer to the outside becomes easier.

At this time, the position, number, size and shape of the heat dissipation hole may be formed differently for various cases, of course, in the case of the present embodiment was configured to have a circular heat dissipation hole is formed on the upper and lower sides of the case 20 .

The light emitting diode lamp according to the present invention by the configuration as described above because the heat generated by the operation of the light emitting diode is quickly discharged to the rear of the PCB through the bottom surface of the PCB and the bottom surface 20a of the case, Since the heat dissipation through the outer surface is smoothly made, there is an advantage that the reliability of the LED lighting can be improved.

In addition, when the LED lighting according to the present embodiment is an indoor lighting such as a room lamp, a direct lamp, and a down light, the part of the rear surface of the case 20 is cut and then the uncut portion 72 is used as the axis. A power line holder 70 formed by bending to the outside of the case 20 is further provided.

The power line holder 70 has a through hole 71 in which an external power line is inserted into the bent portion.

According to the configuration as described above, the LED lighting device according to the present invention is connected to the AC input terminal of the converter (30,130) as described later, when the external power line is inserted into the through hole 71 and the case ( 20 is drawn out through a gap between the back of the power supply holder 70 and the power line holder 70 to be connected to the AC input terminal of the converter.

At this time, if necessary, the external power line may be wound at least once on the edge of the through hole 71. This prevents the fall of the lamp and neatly cleans it up when the external power line is unnecessarily long. There is an advantage that it can.

In addition, the power line holder 70 may also be utilized as a carrying handle in the state of a single light, such as a light, when the case 20 is formed on the same plane as the back, the user may be used to bend upwards when used. have.

In addition, the diameter of the through-hole 71 is preferably formed to a size that is easy to maintain the power line winding or other power line maintenance work, as described above, as an example, is formed about 20 to 30mm in this embodiment It was.

On the other hand, the converter (30, 130) has a plurality of fitting projections (30b) on the upper and lower portions of the converter housing (30a) made of plastic so as to be fitted into the defect groove (20d) formed on the side of the case 20 Formed.

Therefore, when the converter 30, 130 is passed in a direction parallel to the coupling groove 20d, the fitting protrusion 30b is pressed by the top and bottom of the coupling groove 20d and the coupling groove 20d. Will pass through.

Thereafter, when the converter 30 passes through the coupling groove 20d until just before the stopper 30c having a larger cross-sectional area than the coupling groove 20d, the fitting protrusion 30b is returned to its original position by elasticity inherent to the plastic material. As it returns, the upper and lower ends of the defect grooves 20d are fitted between the fitting protrusion 30b and the stopper 30c.

By such a configuration, the converters 30 and 130 of the LED lighting according to the present invention may not only cover the opening 20b of the case, which is a light emitting surface, but may be stably fixed to the side of the case 20.

In this case, the converters 30 and 130 refer to the converter housing 30a having the above-described structure, a power conversion (AC to DC) device (not shown) provided therein, and an AC input / output terminal and a DC output terminal described later. The concept is all inclusive.

As described above, the light emitting diode lamp according to the present invention has a structure in which the converters 30 and 130 are inserted into and mounted in the coupling grooves 20d, which are perforations formed on the side of the case 20, and thus, the converters generated by the lamp according to the prior art. The shadow of 30 and 130 can be easily removed, and thus there is an advantage in that the user's vision loss and discomfort can be minimized.

In the present embodiment, the converters 30 and 130 are used one by one for each PCB module 10 and 110 as shown in FIGS. 1 to 3, and the attachment position is not related to the direction in which the light is emitted. Attach to the side of the).

Therefore, when the two PCB modules 10 and 110 and the converters 30 and 130 are installed as shown in the drawing, the converters 30 and 130 are preferably installed at both left and right sides of the case 20. Furthermore, when three or more PCB modules 10 and 110 are installed, the converters 30 and 130 may be installed on side surfaces in the vertical direction in addition to the left and right sides described above.

In addition, in the present exemplary embodiment, the case of the case 20 is a rectangular plane, but as an example, the converters 30 and 130 may be installed on each side even in the case of a polygon, except that the plane of the case 20 is described below. In the case of a circular shape such as a down light, it may be attached to the side of the case 20 as described above, but may be installed on the back of the case 20 in some cases.

Meanwhile, the converters 30 and 130 may include an AC input terminal (not shown) to which AC power is externally input, an AC output terminal (not shown) for outputting the AC power, and a DC output terminal for converting and outputting the AC power to DC power ( Not shown).

In addition, as shown in FIG. 4, each of the PCB modules 10 and 110 may include a DC input terminal 11, a DC wiring 12 connecting the DC input terminal 11, and the respective light emitting diodes 10a to each other. AC wirings 15 connecting the 2AC terminals 13 and 14 and the first and second AC terminals 13 and 14 are patterned.

In this case, the PCB substrate may be an epoxy material FR-4, CEM-1, etc., but is not limited thereto and may be preferably implemented by any one of a variety of known PCB substrates within the scope of performing the same function. have.

In addition, the patterning formed in the PCB module 10 shown in Figure 4 is for explaining an embodiment of the present invention, of course, can be patterned in a variety of ways. In addition, in the case of arranging a plurality of PCB modules, the arrangement may be implemented in various forms as necessary.

According to the above configuration, the light emitting diode illumination lamp according to the present invention simply connects the input and output terminals provided in the converters 30 and 130 and the terminals 11, 13, and 14 provided in the PCB modules 10 and 110 using a connector. By doing so, since the plurality of converters 30 and 130 and the PCB modules 10 and 110 can be electrically connected, there is an advantage that the wiring structure can be significantly simplified in comparison with the prior art.

In detail, when AC power is input from the outside to the AC input terminal of the first converter 30 connected to the connector 31 in FIGS. 1 and 2, the DC power converting the AC power is applied at the DC output terminal of the first converter. The AC output terminal is output as it is, and in this case, the DC output terminal and the AC output terminal of the first converter 30 are connected to the DC input of the first PCB module 10 by the connector 32 and the connector 33, respectively. It is connected to the terminal 11 and the first AC terminal 13 (in this case, serves as an AC input terminal).

Accordingly, the plurality of light emitting diodes 10a mounted on the first PCB module 10 may be emitted by the DC power supplied along the DC wiring 12 connected to the DC input terminal 11. The AC power supplied to the first AC terminal 13 of the 1 PCB module 10 is transferred to the second AC terminal 14 (in this case, functions as an AC output terminal) along the AC wiring 15 of the first PCB module 10. .

Meanwhile, the second AC terminal 14 of the first PCB module 10 is connected to the second AC terminal 114 of the second PCB module 110 (in this case, serves as an AC input terminal) by the connector 35. The first AC terminal 113 of the 2PCB module 110 (in this case, functions as an AC output terminal) is connected to the AC input terminal (not shown) of the second converter 130 by the connector 36 and the second converter 130. DC output terminal (not shown) is connected to the DC input terminal 111 of the second PCB module 110 by the connector 37.

With this configuration, as described above, the AC power transferred from the AC output terminal of the first converter 30 to the first AC terminal 13 of the first PCB module 10 is connected to the second AC terminal of the second PCB module 110 ( 114), and is transmitted to the AC input terminal of the second converter 130 through the AC wiring (not shown) and the first AC terminal 113, the second converter 130 converts it to DC power source to the second PCB module 110 The plurality of light emitting diodes 110a mounted on the second PCB module 110 emits light by being supplied to the DC input terminal 111.

On the other hand, when two lamps shown in Figures 1 to 3 are installed adjacent to each other by connecting the AC output terminal of the second converter 130 with the AC input terminal of any one converter provided in the other lamp by a connector to supply AC power You can continue.

In the present exemplary embodiment, the case in which two PCB modules 10 and 110 are installed in one lamp is described as an example. However, even when three or more PCB modules are installed, AC power may be supplied to each converter in the same manner.

As described above, the light emitting diode lamp according to the present invention is different from the conventional technology in which the supply wiring of AC power must be separately allocated to the converters 30 and 130 provided in each lamp, and the AC terminal is patterned in each PCB module 10 and 110. Since the AC power input to one converter is supplied to the other converter through the AC wiring, the wiring structure can be significantly simplified, which simplifies the installation process of the lamp and of course the lighting by the complicated wiring structure. The risk of malfunction and fire can be minimized.

Meanwhile, in the present embodiment, a case in which one converter is provided for each PCB module has been described as an example. However, if necessary, one converter may be provided for each PCB module.

However, in this case, each of the plurality of PCB modules 10 and 110 is further provided with a DC output terminal connected to the DC wiring, a method of connecting the DC output terminal of any one PCB module and the DC input terminal of the other PCB module with a connector. By the DC power output from the converter is supplied to a plurality of PCB modules.

In addition, the LED lamp according to the present invention further includes a plate-shaped cover 40 made of acrylic to close the opening so that the user's eyes and the like are not directly exposed to the light emitting surface (ie, the opening) of the lamp.

At this time, the plate cover 40, as shown in Figure 3, the magnet 22 provided in the flange 21 formed to extend outward from the periphery of the opening 20b of the case 20, and the plate cover Since the structure is coupled to the case 20 by the magnetic force acting between the magnetic body cover 42 provided on the rim of the 40, unlike the conventional technology that is coupled by screwing the assembly process is simple and beautiful appearance There is an advantage to being terminated.

In the present exemplary embodiment, the case in which the magnet 22 is coupled to the rear surface of the flange 21 is described as an example, but is not limited thereto. If necessary, the magnet 22 may be embedded in the flange surface, and the magnet 22 may be installed in the flange surface. It can be implemented in a variety of ways.

In addition, in the present exemplary embodiment, a case in which a cover 42 made of a magnetic material is separately provided on the edge of the plate cover 40 is described as an example, but the plate cover 40 and the magnetic cover 42 may be integrally formed. have.

In addition, contrary to the present embodiment, the case may be made of a magnetic material, or the magnetic material may be coupled to the flange, and the cover may be made of a magnet.

In addition, in the present embodiment, the case in which the cover has a plate shape was described as an example, but is not limited thereto and may be implemented in a curved shape as necessary.

On the other hand, the light emitting diode lighting according to the present invention can be applied to the hanging type, ceiling embedded, ceiling-mounted, wall-mounted, wall-mounted lighting, depending on the attachment type, in addition to street lamps, security lights, floodlights depending on the use place To all forms of lighting including human body detection light, office light, house use, dust proof light, moisture proof light, tunnel light, direct lighting, wall light, lawn light, scenery light, emergency light, park light, underwater light, walk light Can be applied.

However, as described above, the configuration of the power line holder 70 is applied only to indoor lighting.

The description so far has been mainly focused on the ceiling-embedded lamps of the various types of lamps, but in addition, the LED lamps according to the present invention are indoor lamps, as shown in FIG. 5. The lamp may be applied to lampshades, lampshades, tripod lamps, corner lamps, or the like, as well as to a room lamp or a living room lamp as shown in FIG. 6.

In addition, the light emitting diode illumination lamp according to the present invention can be applied to a street lamp as shown in FIG. 7 as an outdoor lamp, and can also be applied to outdoor lights, lawn lights, etc. as shown in FIG.

In addition, the LED lighting lamp according to the present invention can be applied to floodlights, underground lights, and the like of various shapes shown in FIG. 9, and can also be applied to a direct lamp or a wall lamp as shown in FIG.

11A, 11B and 12 are a plan view, a rear view and a cross-sectional view showing a light emitting diode lamp according to a second embodiment of the present invention, respectively, and FIG. 13 shows various embodiments of a downlight lamp according to the present embodiment. Drawing.

The light emitting diode illumination lamp according to the present embodiment relates to a down light having a plate-shaped cover 40, and the case in which the bottom surface 20a of the case is directly in contact with the bottom surface of the PCB and the indoor lighting lamp. Since the configuration in which the power supply line holder 70 is provided is the same as that of the first embodiment, the overlapping description is omitted here. In addition, the same reference numerals are given to the same components as those in the first embodiment.

As shown in Figs. 11A, 11B and 12, the LED lamp according to the present embodiment is coupled to a flange 21 formed to extend outward from the perimeter of the opening of the case 20 to close the opening 20b. It includes a plate-shaped cover 40 of the acrylic material.

In this case, the case 20 is provided with a separate reflector plate 25 on the inner surface as in the configuration of a general downlight, the reflector plate adjacent to the bottom surface 20a in which the PCB module 10 of the reflector plate 25 is installed. The side of 25 is formed to further improve the heat dissipation effect by forming a plurality of heat dissipation holes 60.

According to the above configuration, the light emitting diode illumination lamp according to the present embodiment can solve a problem in which eyesight is impaired by directly exposing a user's eyes to a high brightness light source in the case of a conventional down light without a cover, and heat radiation formed near the light source There is an advantage that the heat radiation can be made more effectively by the hole (60).

On the other hand, the plate-shaped cover 40, along the outer circumference of the plate-shaped cover 40, the edge of the first plastic cover 50 and the plate-shaped cover 40 and the first cover is fitted to the outer peripheral surface of the flange 21 The first plastic cover 50 is coupled to the flange 21 by a second plastic cover 51 which is fitted to the outer circumferential surface of the flange 21.

In this case, at least some of the overlapping surfaces of the first plastic cover 50 and the second plastic cover 51 may be bonded by ultrasonic welding to more firmly couple the plate cover 40 to the flange 21. have.

Although the above-described embodiments have been described with respect to the most preferred embodiments of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications can be made without departing from the technical spirit of the present invention.

1 is an exploded perspective view showing the configuration of a light emitting diode lamp according to a first embodiment of the present invention;

2A, 2B and 3 are a plan view, a rear view and a sectional view showing the configuration of the lamp shown in FIG. 1, respectively;

Figure 4 is a plan view showing the configuration of a PCB module applied to the lamp shown in Figure 1,

5 to 10 are exemplary views showing various types of lamps to which the invention according to the first embodiment of the present invention is applied.

11A and 11B are a plan view and a rear view showing the configuration of a light emitting diode lamp according to a second embodiment of the present invention, respectively;

12 is a sectional view showing the configuration of the lamp shown in FIGS. 11A and 11B; and

13 is an exemplary view showing various types of lamps to which the invention according to the second embodiment of the present invention is applied.

Claims (7)

A PCB module mounted with a plurality of light emitting diodes; A case having an opening in which light generated by the light emitting diodes is emitted, an upper portion of an inner bottom surface at which the PCB module is installed; And And at least one converter having an AC input terminal to which AC power is input, an AC output terminal for outputting the AC power, and a DC output terminal for converting and outputting the AC power to DC power, The inner surface of the case is composed of a reflecting plate for reflecting light in the opening direction, the bottom surface of the case consisting of the reflecting plate and the bottom surface of the PCB is in direct contact with each other to release the heat generated from the light emitting diode to the outside At least one coupling groove is formed at a side of the case to insert a plurality of heat dissipation holes and the respective converters. Each of the PCB modules includes a DC input terminal connected to the DC output terminal by a connector, a DC wiring connecting the DC input terminal to each light emitting diode, an AC input terminal connected to the AC output terminal by a connector, and an AC output terminal. And an AC wiring connecting the AC input terminal to the AC output terminal is patterned. delete The method of claim 1, The converter is provided for each PCB module, When AC power is input to any one of the converters, the AC input and output terminals of each of the PCB modules and the AC input and output terminals of the converter are connected by connectors so that the AC power is supplied to the remaining converters. LED lighting. The method of claim 3, Further comprising a cover of acrylic material coupled to the flange formed to extend outward from the periphery of the opening to close the opening, The cover is a light emitting diode lamp, characterized in that coupled to the flange by a magnetic force acting between the magnet provided on the flange and the magnetic cover provided on the edge of the cover. The method of claim 1, The light emitting diode illumination lamp is a down light illumination lamp including an acrylic cover coupled to a flange formed to extend outwardly from a perimeter of the opening of the case to close the opening, The case is configured by combining the outer case and the inner reflector for reflecting light in the opening direction, The bottom surface of the inner reflector and the bottom surface of the PCB directly contact each other to dissipate heat generated from the light emitting diodes to the outside, LED light, characterized in that a plurality of heat dissipation holes are formed on the side of the inner reflector. The method of claim 5, wherein the cover, A first plastic cover fitted to an outer circumferential surface of the flange along an outer circumference of the cover; and Is coupled to the flange by a second plastic cover which is fitted to the outer circumferential surface of the flange at the upper edge of the cover and the first plastic cover, At least a portion of the overlapping surface of the first plastic cover and the second plastic cover is bonded by ultrasonic welding. The method according to any one of claims 1 and 3 to 6, The light emitting diode lighting is an indoor lighting, And a power line holder formed by cutting a portion of the rear surface of the case and bending it to the outside of the case and having a through hole in which an external power line is inserted in the bent portion.

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