KR20110108534A - LED module and LED lighting device using the same - Google Patents

Abstract

The present invention relates to an LED module and an LED lighting device using the same, and more particularly, by including an LED module including an LED light source unit provided on one surface of a heat sink and an LED cover unit which is formed to surround the LED light source unit and a light transmitting cover unit coupled to the heat sink. Since the size of the mold is reduced, the mold cost is reduced, thus reducing the manufacturing cost and effectively dissipating heat. In addition, the LED module of the present invention can be applied to various conventional housing types.

Description

LED module and LED lighting device using same {LED Module and LED Lamp Using the Same}

The present invention relates to an LED module and a LED lighting device using the same, including a heat sink, an LED light source and a floodlight cover to effectively dissipate heat to prevent degradation of function and to reduce manufacturing costs.

A light emitting diode (LED) is a device that emits light when a voltage is applied. The color of emitted light creates a wavelength depending on the composition of semiconductor chip components, and the wavelength of the light determines the color of light.

LED devices have advantages such as long life, eco-friendliness and fast response, and are used for lighting or LED backlights.

This LED device consumes only 1/5 of the power consumption of a typical incandescent lamp, and its reaction time is one million times faster, and its life is semi-permanent. It is an electronic display board such as a precision semiconductor equipment inspection instrument, an automobile instrument panel, an electronic board, an industrial machine display, and various traffic safety. It is used in various fields from signal to lighting fixtures.

Korean Patent No. 931773 discloses a lighting module using an LED light source. The lighting module 10 of this technique comprises a luminaire frame 15, in which both ends are inclined at a predetermined angle, as shown in FIG. A reflector plate 13 having LED insertion holes formed at regular intervals so that the LED element 11 can be inserted thereon, the reflector plate 13 being inclined to correspond to the luminaire frame 15 and disposed on the luminaire frame 15; An LED element 11 inserted into the LED insertion hole; A metal PCB 12 disposed below the reflector plate 13 and connected to the LED element 11 to control the LED element 11; An upper cover 14 disposed above the luminaire frame 15; A side cover detachably attached to both side portions of the luminaire frame 15; And a heat sink 16 attached to the lower portion of the luminaire frame 15, thereby improving lighting efficiency and efficiently dissipating heat. However, the lighting module of the technology has a limitation in the place where it is applied because of its bulky volume, and the manufacturing cost increases because the reflector is provided. In addition, there is a lot of light covered by the luminaire frame 15, and a lot of light reflected by the upper cover 14 is optically disadvantageous.

An object of the present invention is to provide an LED module including a light source cover provided on one surface of the heat sink and the LED light source to surround the LED light source.

In addition, another object of the present invention to provide an LED lighting device having an LED module.

In addition, another object of the present invention is to provide a surface light including an LED lighting device.

1. An LED module comprising a plurality of LED elements, comprising a LED light source unit provided on one surface of the heat sink and the LED light source unit to cover the LED light source and a light transmitting cover coupled to the heat sink.

2. In the above 1, the LED module is further provided with a heat sink fin.

3. The LED module of claim 1, wherein the LED light source unit includes a metal printed circuit board (Metal-Core PCB) and a plurality of LED elements soldered to the metal printed circuit board.

4. The LED module according to the above 1, wherein the LED light source unit is provided with a plurality of LED elements in a row.

5. In the above 1, the LED light source is provided with a current limiting circuit LED module.

6. In the above 1, the LED module to form an O-ring groove is provided with an O-ring (O-ring) on at least one selected from the heat sink and the transparent cover.

7. In the above 1, the heat sink is a LED module is formed in the longitudinal direction so that the wire insertion hole is parallel to the LED light source.

8. The LED module according to the above 1, wherein the light-transmitting cover part is any one selected from a cylindrical, oval cylinder, parabolic cylinder, hyperbolic cylinder and polygonal cylinder through which the light emitting portion of the LED light source passes.

9. The LED module according to the above 8, wherein the LED light source has a large amount of light emitted from both sides, and the direction of light emitted from both sides is perpendicular to the axial direction of the light emitter.

10. In the above 1, the LED module is further provided with a washer in the transparent cover.

11. LED lighting device comprising one or more LED modules according to any one of the above 1 to 10.

12. The LED lighting device according to the above 11, wherein a plurality of LED modules are provided and a power supply device is disposed in each of the LED modules.

13. The LED lighting device according to the above 12, wherein the power supplies are capable of master / slave control with each other.

14. In the above 11, LED lighting device comprising a housing provided with one or more LED modules therein.

15. The LED lighting device of claim 14, wherein the housing is in the form of a plate.

16. A surface light comprising an LED luminaire according to 14 or 15 above.

LED module of the present invention is composed of a heat sink, a LED element and a floodlight cover portion, the size of the components such as the heat sink and the floodlight cover is reduced to reduce the mold cost, etc., manufacturing cost is reduced, the heat generated when the LED device is driven effectively Release to prevent degradation of LED module performance and lifetime.

In addition, the LED module of the present invention can be applied to various conventional housing types.

The lighting device including the LED module of the present invention is provided with one or more LED modules to satisfy the light irradiation range required by the lamp, and can control the number of LED modules to cope with various power consumption. In addition, it is easy to replace when the LED module is broken.

1 is an exploded view showing a conventional lighting module,
2 is an exploded perspective view of an LED module according to a preferred embodiment of the present invention;
Figure 3 is a perspective view of the transparent cover of the LED module of the present invention,
4 is a graph showing a return loss ratio with respect to a general incident angle.
5 is an exploded perspective view of an LED lighting device including the LED module of the present invention.

The present invention includes an LED module formed of a LED light source unit and a LED light source unit provided on one surface of the heat sink, and a floodlight cover unit fastened to the heat sink, so that the size of the parts is reduced since the floodlight cover unit and the light source are configured for each module. The present invention relates to an LED module and an LED lighting device using the same, which reduce manufacturing costs and reduce heat.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

2 is an exploded perspective view of an LED module according to a preferred embodiment of the present invention.

As shown in FIG. 2, the LED module 100 includes a heat sink 110, an LED light source 120, and a floodlight cover 130.

The heat sink 110 emits heat generated from the LED element 122 to the ambient air, and in order to increase the surface area to further dissipate heat to the ambient air, the heat sink 110 preferably includes a heat sink fin 111 on one surface of the heat sink 110. Do.

The heat sink 110 may be made of any one selected from iron, aluminum, aluminum alloy, copper, copper alloy, stainless steel, nickel, and tin, and may be used as long as it is a material capable of dissipating heat to ambient air. have. In addition, the material of the heat radiation fins 111 is preferably the same as the heat sink (110).

 In order to supply power to the LED light source unit 120, a hole through which an electric wire can pass must be formed in the heat sink 110 or the floodlight cover 130, and a hole is formed in the heat sink 110 that is more rigid than the floodlight cover 130. It is preferable to form, and after inserting the electric wire to block the empty space with a silicone rubber or the like for protection functions such as dustproof and waterproof.

The structure of the heat sink 110, which is easy to form a hole, is to form one hole from the rear surface of the heat sink 110 to the front surface, for example, in a direction perpendicular to the metal printed circuit board 121, but rain water or dust is directly accumulated. Therefore, in order to prevent this, a hole is formed in the longitudinal direction such that it is parallel to the heat sink 110 or the LED light source unit 120, for example, in the longitudinal direction so as to be parallel to the metal printed circuit board 121 (a '), and the metal is printed again. It is preferable to form one hole a '' in the direction perpendicular to the circuit board 121. When the heat sink 110 is manufactured by extrusion, the through part provided with the hole a 'formed to be parallel to the metal printed circuit board 121 does not need to be processed separately. At this time, the heat dissipation fin 111 is provided on the upper surface of the through part in which the hole (a ') through which the wire passes.

The LED light source unit 120 is provided on one surface of the heat sink 110, for example, a surface on which the heat radiation fins 111 are not provided.

The LED light source unit 120 includes a metal printed circuit board 121 and a plurality of LED elements 122 soldered to the metal printed circuit board 121. In general, when a general printed circuit board is used, the life of the LED light source is shortened by heat generated when the LED device emits light, so in the present invention, a metal printed circuit board (124, Metal-Core PCB) that quickly dissipates heat to ambient air is used. It is preferable to use.

The LED light source unit 120 may be provided with a connector to facilitate the connection with the power source.

The floodlight cover 130 is positioned on the side where the light is emitted from the LED device 122 and is formed to surround the LED light source 120, and is fastened to one surface of the heat sink 110 without the heat dissipation fin 111.

The floodlight cover 130 is a fastening surface 131 formed in a plate shape in all directions along the circumference of the light emitting portion 132 and the light emitting portion 132 through which the light emitted from the LED element 122 passes. Is done.

The fastening surface 131 and the heat dissipation plate 110 are positioned to be in contact with each other and fastened by fastening means such as bolts, nuts, and clamps, and have a function of dustproofing and waterproofing at a connection portion between the floodlight cover 130 and the heat dissipation plate 110. In order to add the O-ring (O-ring) is provided in the selected one or both of the heat sink 110 and the transparent cover 130 is formed. As shown in FIG. 3, the floodlight cover 130 preferably includes an O-ring groove 133 between the fastening surface 131 and the light emitting portion 132.

 The transparent cover 130 is preferably made of a transparent material that can minimize the loss of light emitted from the LED device 122. Specific examples thereof include glass or transparent plastic. In addition, the floodlight cover 130 may be added to the light diffusion function to prevent glare.

The light transmission cover 130 made of glass or plastic has a problem such as cracking or cracking due to the concentration of force on the fastening surface 131 when fastening by fastening means, so that performance degradation such as durability, dustproofing, and waterproofing may be concerned. The plate-shaped washer 140 is provided on the upper surface of the surface 131. The washer 140 provided on the upper surface of the fastening surface 131 is formed as a through hole so that the light emitting part 132 passes, and the heat dissipation plate 110 because the force is evenly distributed even when a strong force is applied to the fastening means. By tightening the fastening of the floodlight cover 130 and improve the performance, such as durability, dustproof and waterproof of the LED module 100.

4 is a graph showing a reflectance curve with respect to a general incidence angle, where the S reflection loss ratio shows the case where the polarization is horizontal to the reflection plane and the P reflection loss ratio shows the case where the polarization is perpendicular to the reflection plane. Since the graph changes depending on the material, the coating, the wavelength, the polarization, and the like, even if the S reflection loss ratio is described as an example, only the difference in calculation is obvious. For reference, the P reflection loss rate is low because the reflection disappears at Brewster's angle.

The light transmission cover 130 is passed through the light emitted from the LED light source unit 120, the ratio of the light transmitted, the reflected light (Fig. 4) and the absorbed light in accordance with the angle incident on the floodlight cover 130 different. As shown in the S reflection loss rate graph of FIG. 4, the reflection loss rate is increased to 10% or more when the angle at which light is incident on the floodlight cover 130 is 45 ° or more. Therefore, it is preferable that the light emitting cover part has a spherical shape centering on the LED element 122 such that the angle at which light is incident on the light transmitting cover part is 0 ° in order to minimize the reflection loss. However, it is preferable that the LED elements 122 are arranged to have a predetermined interval rather than to be gathered into one point in the design, for example, when all the LED elements 122 are arranged to be spaced apart from each other, Centering spheres are impossible.

In addition, when the LED module 100 is used as a stand and a surface light, a narrow radiation angle is required in the longitudinal direction (the longitudinal direction of the LED module) to reflect all the widths of the range in which the user is active. In the direction orthogonal to this, a wide radiation angle is required.

Therefore, in order to form the radiation angle as close to the sphere as possible, the cross-section of the light-transmitting cover part 130, for example, the light emitting part 132, is shown in FIG. 2 as the axis of the longitudinal direction of the LED light source part 120. It is preferable that the cylindrical shape is not limited thereto, but may be any one selected from an elliptical cylinder, a parabolic cylinder, a hyperbolic cylinder, and a polygonal cylinder.

At this time, the LED element 122 provided in the LED light source unit 120 is arranged in one or two lines, preferably one line in 1 to 2 W class, but the number of lines is not limited. In addition, the LED device 122 has a large amount of light emitted from both sides, and the direction of light emitted from both sides is preferably used perpendicular to the axial direction of the light emitter 132. Therefore, the light emitted from the LED light source unit 120 has a large emission amount on both sides, and the direction of the light emitted on both sides is perpendicular to the axial direction of the light emitter 132.

The floodlight cover 130 has been described only for the function of passing the light emitted from the LED device 122 and the protection function, such as dustproof and waterproof, but the technical concept of the present invention even when adding a refractive function to change the radiation pattern Is applicable. In addition, the technical idea of the present invention can be applied to both ends of the light-transmitting cover 130 in a streamlined form for processing convenience, strength or appearance design.

In addition, when the power supply device of constant voltage driving is connected to the LED module 100, it is preferable that a current limiting circuit is added to the LED module 100.

Since the LED module 100 includes an LED light source unit 120 and a floodlight cover unit 130, the LED module 100 may be applied to a stand or the like. It can also be applied to various lights such as security lights.

5 is an exploded perspective view of an LED lighting device including the LED module of the present invention.

LED module 100 of the present invention may be provided in the housing of various conventional forms, or may be provided in the housing as shown in FIG. At this time, the housing in which the LED module 100 of the present invention is provided is not limited in size and shape because the LED module 100 may be applied to any size and shape.

As shown in FIG. 5, the LED lighting device 500 is provided with one or more LED modules 100 inside the housing 200 by fastening means, and the housing 200 includes a cover 210 and a beam. And 220 and base 230.

The cover 210 is provided to surround the LED module 100 on the side where the heat sink of the plurality of LED modules 100 is provided to fasten bolts, nuts, clamps, etc. to the base 230 and / or the beam 220. By being fixed by means to provide a protective function, such as dustproof and waterproof, it can provide a variety of appearance. Sufficient strength can be maintained by only bolting the portion where the cover 210 is in contact with the beam 220, but in order to be more robust, a hole corresponding to the cover 210 is formed in the base 230 and the cover 210 is formed. ) May be inserted into the base 230 and then fixed with a bolt. Preferably, the protrusion 210 may be provided at the base 230 so that the base 230 supports the cover 210 at a position where the cover 210 and the base 230 contact each other, rather than the cover 210 is inserted into the base 230. To form and bolt. Therefore, the cover 210 can be easily opened and manufactured during manufacture or installation and maintenance.

The cover 210 may perform a heat dissipation function, for example, to maximize the heat dissipation performance of the heat sink of the LED module 100 by making a hole in the cover 210 to be well ventilated, another example Heat dissipation fins may be provided on the cover 210 to improve heat dissipation performance. Auxiliary functions such as dustproof and waterproof are sufficiently made by the LED module 100 itself, so even if holes are formed in the cover 210, the auxiliary functions such as dustproof and waterproof are not affected.

In addition, the cover 210 may be attached to the solar cell on the upper surface by forming a flat upper surface as shown in Figure 5, it can be used as an auxiliary power source of the LED lighting device (500). When the solar cell is attached to the cover 210 as described above, it is preferable to separately provide a rechargeable battery in the cover 210.

Beam 220 is formed in the longitudinal direction at the position of the upper surface side 220 '' and / or the lower surface side 220` of the LED module 100 to connect the base 230 provided on both sides to support the components Play a role. The beam 220 may use a circular rod or a polygonal rod, but in order to reduce weight, it is preferable to use a T-shaped rod or an I-shaped rod having a strong strength to weight. In this case, a hole corresponding to the beam 220 is formed in the base 230, thereby inserting the beam 220 into the base 230 and fixing the beam 220 and the base 230 by fastening means.

The beam 220 ″ positioned on the upper surface side of the LED module 100 is provided with a power supply device 300 to supply power to the LED module 100.

In addition, the beam 220 'is fixed to the heat sink of the LED module 100, a separate shade 221 is provided to fill the empty space between the LED module 100 at the position of the bottom beam 220`. Can be.

The base 230 is provided on both sides of the cover 210 and the beam 220, one base 230 has a hole for passing the power line supplied from the outside and supports the part, the other side Base 230 serves to hold in the form of a predetermined structure.

In the case of an LED device using an AC input to supply power to the LED module 100, it is sufficient to connect the main power directly, but in the case of an LED device using a DC input, a DC power supply 300 is required. As the power supply 300, it is preferable to use a Switched Mode Power Supply (SMPS) that is more efficient than an AC / DC adapter.

The power supply device 300 may be located outside the housing 200, but the power supply device 300 may be provided in the beam 200 ″ located in the housing 200, for example, on the upper surface of the LED module 100. It is easy. The power supply device 300 is fixed to the beam 220 ″ as a fastening means, but when the power supply device 300 is hardly fastened directly to the beam 220 ″, a fixing plate 310 may be added.

When the power supply 300 is a constant voltage driving, it is preferable that a current limiting circuit is added to the LED module 100. When the power supply device 300 is a constant current driving circuit, a separate circuit is not necessary for the LED module 100, but when one LED module 100 fails, current is concentrated on the other LED module 100 so that the entire circuit is concentrated. Since the life is shortened, it is preferable to add a current limiting circuit.

The power supply device 300 preferably includes a control circuit corresponding to a dimming signal in order to save energy by adjusting brightness according to ambient illumination or various situations.

In addition, the power supply device 300 is preferably provided with a control circuit for selecting a power source used among the main power source and the rechargeable battery when the cover 210 is provided with a solar cell.

The power supply 300 may use one power supply 300 for the entire LED module 100, or use one power supply 300 per LED module 100. When the power supply 300 is disposed in each of the plurality of LED modules 100, stable performance may be obtained without adding a current limiting circuit to the LED module 100. In addition, since a plurality of power supplies 300 separately perform a control function on each of the LED modules 100, a deviation may occur in performance, so that master / slave control is performed between the power supplies 300. It is desirable that it is possible.

The housing 200 may be manufactured in a plate shape so as to correspond to a portion of the lamp which is fastened to the housing 200 when the housing 200 is formed in a plate shape.

In addition, in order to use the LED lighting device 500 of the present invention as a surface light for replacing fluorescent lamps among various lighting lamps, the size and structure of the housing 200 may be formed according to a buried fluorescent lamp structure used in an office or the like.

In addition, the LED lighting device 500 of the present invention can manufacture various types of lighting equipment by changing the number of the LED module 100 and the shape of the housing 200, the specific number of the LED module 100 And by changing the shape of the housing 200 can be manufactured with the LED lighting device 500 required for vertical farming (Vertical Farming).

The specific parts of the present invention have been described in detail above, and for those skilled in the art, these specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereto. It is apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the art, and such variations and modifications are within the scope of the appended claims.

10: Lighting module (conventional) 11: LED element (conventional)
12: Metal PCB (conventional) 13: Reflector (conventional)
14: upper cover (conventional) 15: luminaire frame (conventional)
16: heat sink (conventional)
100: LED module 110: heat sink
111: heat dissipation fin 120: LED light source
121: metal printed circuit board 122: LED element
130: transparent cover 131: fastening surface
132: light emitting portion 133: O-ring groove
140: washer 200: housing
210: cover 220: beam
221: shade 230: base
300: power supply 310: fixed plate
500: LED luminaire

Claims (16)

An LED module comprising a plurality of LED elements, including a LED light source unit provided on one surface of the heat sink and the LED light source portion to cover the LED light source and a light transmitting cover coupled to the heat sink. The LED module of claim 1, further comprising a heat dissipation fin on the heat sink. The LED module of claim 1, wherein the LED light source unit comprises a metal-core PCB and a plurality of LED elements soldered to the metal printed circuit board. The LED module of claim 1, wherein the LED light source unit includes a plurality of LED elements in a row. The LED module of claim 1, wherein the LED light source unit is provided with a current limiting circuit. The LED module of claim 1, wherein an O-ring is formed in at least one selected from a heat sink and a floodlight cover. The LED module according to claim 1, wherein the heat dissipation plate is formed in a longitudinal direction such that the hole for wire insertion is parallel to the LED light source unit. The LED module of claim 1, wherein a cross section of the light emitting portion through which the light emitted from the LED light source passes is selected from a cylindrical, elliptical cylinder, parabolic cylinder, hyperbolic cylinder, and polygonal cylinder. The LED module according to claim 8, wherein the LED light source has a large amount of light emitted from both sides, and the direction of the light emitted from both sides is perpendicular to the axial direction of the light emitter. The LED module of claim 1, further comprising a washer in the floodlight cover. LED lighting device comprising at least one LED module according to any one of claims 1 to 10. The LED lighting device of claim 11, wherein a plurality of LED modules are provided and a power supply device is disposed in each of the LED modules. 13. The LED lighting device of claim 12, wherein the power supplies are capable of master / slave control with each other. The LED lighting device of claim 11, further comprising a housing having one or more LED modules therein. The LED lighting device of claim 14, wherein the housing is in the form of a plate. Surface lighting comprising the LED lighting device according to claim 14 or 15.

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