KR101097239B1 - Led lighting apparatus - Google Patents

Abstract

PURPOSE: An LED lamp device with a reflector which has a light amplifying effect is provided to reflect light of an LED by a reflector several times, thereby minimizing light loss. CONSTITUTION: An LED lamp device includes an LED module(10), a reflector(20), and a heat emitting assembly. The reflector includes a first reflector(21) and a second reflector(23). The first reflector is adjacent to the LED module. The second reflector is connected to the frontal part of the first reflector. The heat emitting assembly contacts the PCB(Printed Circuit Board)(13) of the LED module.

Description

LED lighting apparatus with reflector having light amplification effect {LED lighting apparatus}

The present invention relates to an LED lighting apparatus using an LED as a light source, and more particularly, a structure in which the light emitted from the LED is concentrated in the front while being reflected several times, that is, amplifying the emitted light of the LED to irradiate the front. The present invention relates to an LED lighting device having a reflector having an optical amplification effect incorporating a reflector.

LEDs have been spotlighted as a light source for lighting devices because they have a semi-permanent lifespan, low power consumption, environmental friendliness, and high lighting efficiency.

LED lighting apparatus using the LED as a light source is a lot of light emitted from the LED is reflected by the side to reflect the light to be lost to reflect the front to reflect.

As the LED lighting apparatus according to the prior art, when the registered patent No. 1006065 "LED lighting device", or Patent Publication No. 2005-0078194 "LED chip lamp device" and the like, the light emitted from the LED is wrapped around the surrounding front of the LED is lost It is provided with a reflector for irradiating forward instead of.

By the way, when looking at the LED lighting apparatus according to the prior art, the reflector is smoothly rounded and made of a bowl shape of the outer light inner narrow structure with the outside wide open.

The reflector according to the prior art is irradiated forward after the light emitted from the LED is reflected once or twice on the reflector surface, the irradiation area to be illuminated at the time of installation by bending a considerable amount of light reflected from the reflector to the front You'll be out of the country to explore other areas. In other words, the light emitted from the LED is concentrated, so that it cannot irradiate the front, but irradiates a large amount of light in the wrong place, causing the loss of light.

Accordingly, a reflector capable of increasing the lighting efficiency by allowing the light emitted from the LED to be irradiated to an unnecessary place and not lost, but concentrated to a specific area (that is, amplifying the light emitted from the LED) is required.

In addition, LEDs have many advantages as described above, but because they are semiconductor devices, they are sensitive to heat and thus often fail to reach their lifetime unless heat dissipation is performed smoothly.

Therefore, in the LED lighting device, the heat dissipation structure with the power supply that supplies a stable power to the LED has become the most important problem.

As a heat dissipation structure of the LED lighting apparatus according to the prior art, Patent No. 0939696 "LED lighting apparatus having a heat dissipation structure", Korean Utility Model Publication No. 2010-0009279 "LED bulb" and the like have been disclosed.

LED lighting device according to the prior art, including the registered patent and the utility model is made of a cylindrical shape as a whole, employing a heat radiator having a plurality of plate-shaped radiating wings protruding radially on the outer surface as a heat dissipation structure, LED Is mounted on the upper surface of the heat sink is attached to the structure.

In the heat sink, a plurality of heat dissipation blades are introduced to increase the contact area with the outside air and will be an essential component.

However, in a structure in which a PCB mounted with an LED is mounted on an upper surface of a heat sink in which a plurality of heat dissipation wings are formed on the outer surface as in the prior art, the entire bottom surface of the PCB is radiated due to the space between the heat dissipation wings. Is not in contact with each other, thereby reducing the heat transfer efficiency from the PCB to the heat sink, which in turn lowers the heat radiation efficiency.

Therefore, it is necessary to increase the heat dissipation efficiency by introducing a means for transferring heat induced from the entire bottom of the PCB of the LED module to the heat dissipation while maximizing the contact area where the heat dissipation wing of the heat dissipation is in contact with the outside air.

In addition, among the heat dissipation structure of the LED lighting apparatus according to the prior art, as disclosed in Korean Patent No. 0939531, "The heat dissipation apparatus of the LED lamp", a vent is introduced to increase heat dissipation efficiency by inducing air circulation around the heat dissipation body and the LED module. There are things.

However, the ventilation hole of the heat dissipation structure introduced in the prior art is simply a plurality of holes perforated in the heat dissipation body (which may include PCB), and induces the intake and exhaust of the outside air to smoothly circulate the air. There is a limit in increasing the heat radiation efficiency accordingly.

The present invention amplifies the light emitted from the LED in the LED lighting device according to the prior art as described above to have a light amplification effect that introduces a reflector that meets the needs of the reflector to increase the lighting efficiency by focusing on a specific area in front An object of the present invention is to provide an LED lighting device having a reflector.

And the reflector composed of the first reflector and the second reflector for the optical amplification effect is made of a plurality of powders are assembled and assembled to reduce the production cost and productivity, each powder is assembled quickly and quickly, An object of the present invention is to provide an LED lighting device having a reflector having an optical amplification effect having a structure in which no height difference is generated.

In addition, in order to solve the problem of the heat dissipation structure of the LED lighting apparatus according to the prior art, the heat dissipation is in close contact with one side and the heat radiating from the LED module by adopting a heat pipe in contact with the entire PCB bottom of the LED module on the other side It is another object of the present invention to provide an LED lighting device having a reflector having a light amplifying effect with a high heat radiation effect by being more effectively transmitted to a heat sink.

In addition, the heat dissipation assembly having a somewhat complicated structure in order to increase the heat dissipation efficiency is separated into the first and second radiators having a simple structure and manufactured, and then the raw material discarded by assembling is reduced to increase the economic efficiency, and the first radiator and the second radiator are improved. It is another object of the present invention to provide an LED lighting device having a reflector having a light amplification effect, in which the heat dissipating body is simply assembled and assembled.

Another object of the present invention is to provide an LED lighting device having a reflector having an optical amplification effect in which air intake and exhaust holes are introduced to increase the heat radiation efficiency.

LED lighting device having a reflector having an optical amplification effect according to the present invention for achieving the above object

LED module;

A reflector including a first reflector arranged adjacent to the LED module and a second reflector connected to the front of the first reflector;

And a heat dissipation assembly in contact with the PCB of the LED module.

In addition, the first reflector is composed of a plurality of first reflecting unit in a continuous array of triangular or trapezoidal flat plate,

The second reflector is inclined inward at the front end of the first reflector, characterized in that consisting of a plurality of second reflecting unit arranged in a continuous array of triangular or trapezoidal flat plate,

The heat dissipation assembly includes a heat pipe in contact with the PCB of the LED module,

The LED module is characterized in that arranged in the form of a column on the exposed heat pipe,

The first reflector and the second reflector is composed of a plurality of powders assembled to each other,

An insertion hole is formed at one side of the powder in the longitudinal direction, and an insertion protrusion formed after being inserted into the insertion hole of the other powder is formed at the other side, and at one side of the powder in order to prevent the occurrence of a height difference with the other powder to be assembled and assembled. It is characterized in that the stepped portion is formed.

LED lighting device having a reflector having an optical amplification effect according to the present invention having such a configuration is to reflect the light emitted from the LED through the reflector several times to minimize the loss to the surrounding area and to focus on a specific area in front And the amplification effect is excellent,

The first reflector and the second reflector constituting the reflector are made of powder having a simple structure, so that the productivity is high, and the powders are assembled and assembled quickly and with minimal scavenging clearance.

In addition, by adopting a heat pipe in which both sides of the heat sink and the PCB of the LED module are in close contact with each other, the heat emitted from the LED module is efficiently transferred to the heat sink, so that the heat radiation efficiency is high.

In order to increase the contact area with air, the heat dissipation assembly of a rather complicated structure is separated into the first and second heat dissipating elements having a simple structure, and then assembled and assembled. Productivity is excellent because the assembly of the first radiator and the second radiator can be performed quickly and easily,

In addition, the heat dissipation assembly and the inlet air vent hole of the structure that induces air circulation around the LED module are improved to improve the heat dissipation efficiency, and the reflector that surrounds the LED module exposed in a cylindrical shape has excellent light amplification effect and thus light efficiency. This outstanding

LED lighting device having a reflector having an optical amplification effect, is a very useful invention for industrial development.

1 is a perspective view of an LED lighting device having a reflector having an optical amplification effect according to an example of the present invention.
FIG. 2 is an exploded perspective view of an LED lighting device having a reflector having an optical amplification effect shown in FIG.
3 is a perspective view and a cross-sectional view of a heat dissipation assembly in which intake and exhaust holes are introduced according to another embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in more detail with respect to the LED lighting device having a reflector having an optical amplification effect according to the present invention.

As shown in the drawings, the LED lighting device having a reflector having an optical amplification effect according to the present invention includes a large component called an LED module 10, a reflector 20, and a heat dissipation assembly 30,

The bulb 40 may further include a holder 50, a bracket 60, a light transmitting panel 70, and a cover 80.

The bulb 40 accommodates the reflector 20 and the LED module 10 therein, and a stepped portion 41 is formed at the edge of the front opening.

The floodlight panel 70 is mounted on the stepped portion 41 formed at the front edge of the bulb 40 to cover the opening, and emits light emitted from the LED 11 to be irradiated forward.

The cover 80 is coupled to the front edge of the bulb 40 to fix the floodlight panel 70. In addition, a packing 81 is interposed between the cover 80 and the floodlight panel 70 to seal the gap.

The holder 50 is inserted into the outer circumference of the heat pipe 31 and fixedly mounted to the bulb 40.

The bracket 60 is connected to both sides of the holder 50 and fixedly mounted to a structure such as a ceiling. In this case, it may be preferable that the holder 50 is capable of adjusting an angle with respect to the bracket 60.

The LED module 10 includes an LED 11 and a PCB 13 on which the LED 11 is mounted.

The LED 11 may be preferable to use a thin and high illumination chip LED compared to the general convex lens-type LED, the PCB 13 is better to use a metal PCB because the thermal conductivity is superior to the general synthetic resin PCB It may be preferable, the PCB 13 in contact with the side of the heat pipe 31 may be preferably using a flexible PCB.

The reflector 20 is embedded in the bulb 40 and surrounds the periphery of the LED module 10 to increase the lighting efficiency by reflecting the light emitted from the LED 11 several times so that the incident light is concentrated to the front.

The reflector 20 includes a first reflector 21 arranged around the LED module 10 and a second reflector 23 connected to the front side of the first reflector 21.

The inner surfaces of the first reflector 21 and the second reflector 23 may be surface-treated to increase reflection efficiency, or a material having high reflection efficiency may be coated or coated.

The first reflector 21 and the second reflector 23 has a structure in which the inner diameter gradually increases while going from the rear to the front, and the second reflector 23 extends a surface in front of the first reflector 21. It is connected at an inclined angle from the inside, and reflects the light emitted by the LED 11 of the LED module 10 arranged on the side of the heat pipe 31 several times so that it is concentrated and irradiated forward. That is, the light emitted from the LED 11 is amplified (concentrated) to irradiate the front.

The first reflector 21 and the second reflector 23 each include a plurality of first reflecting unit 21a and a second reflecting unit 23a arranged in succession with a flat plate having a trapezoidal shape (possibly triangular). It is done by

The first reflector 21 and the second reflector 23 are manufactured by pressing a thin plate to increase productivity.

Since the first reflector 21 and the second reflector 23 having a generally cylindrical shape with an inner diameter gradually longer toward the front are difficult to be produced by a single press working, the production is divided into a plurality of powders 21A and 23A. After the assembly is prepared by assembling the powder (21A, 23A).

In order to assemble and couple the powders 21A and 23A, an insertion hole 26 is formed in one longitudinal direction of each of the powders 21A and 23A, and the insertion hole 26 of the other powders 21A and 23A in the other longitudinal direction. An insertion protrusion 27 is formed to be retracted after being inserted into, and a step 27 is formed in one side length direction of the powders 21A and 23A so that a height difference does not occur in the contact portion between the powders 21A and 23A.

In addition, the insertion hole 26, the insertion protrusion 27, and the step 28 of the above structure are formed on the upper side of the first reflector 21, the powder 21A, and the lower side of the second reflector 23, the powder 23A. Thus, the first reflector 21 and the second reflector 23 are assembled. In addition, an insertion protrusion 27 is formed at a lower side of the first reflector 21 and an insertion hole is formed at a bottom surface of the bulb 40 so that the reflector 20 is fixedly mounted to the bulb 40.

The heat dissipation assembly 30 includes a heat pipe 31, a first heat dissipation body 33, and a second heat dissipation body 35.

The heat pipe 31, the first heat dissipating member 33 and the second heat dissipating member 35 are preferably made of aluminum, which is light, easy to process, and excellent in thermal conductivity.

The first radiator 33 and the second radiator 35 are preferably manufactured by an extrusion method with high productivity. At this time, as described above, the structure in which the first heat radiator 33 and the second heat radiator 35 are coupled to each other is somewhat complicated so that the first heat radiator 33 and the second heat radiator 35 are integrally formed. It is not easy to make the extrusion process, and the space part from the inside to the outside is the part which is etched away during the extrusion process of raw materials. Therefore, it would be desirable to separate the first heat sink 33 and the second heat radiator 35 having a simpler structure, and then to extrude and fabricate them to assemble and bond them.

The heat pipe 31 has an upper surface clogged in a cylindrical shape and is inserted into and coupled to a hollow 331 formed in the first heat radiator 33.

At this time, the heat pipe 31 is inserted into the hollow 331 by a press-fit method and fixed. The outer surface of the heat pipe 31 and the inner surface of the first heat radiator 33 hollow 331 are brought into close contact with each other, and are heated. It is necessary that the pipe 31 and the first heat radiator 33 are firmly adhered to each other and fixed.

To this end, the outer diameter of the heat pipe 31 is made to be the same as or slightly larger than the inner diameter of the hollow 331 of the first heat radiator 33, and then the hollow heat in the state in which the outer diameter is reduced by cooling the heat pipe 31 When pushed to 331 and placed at room temperature, the heat pipe 31 expands as the temperature rises to room temperature and the outer surface is tightly and firmly coupled to the inner surface of the hollow 331. For reference, on the contrary, the heat pipe 31 may be inserted after the heat radiating cavity 331 is expanded, and the first heat radiator 33 is heated and the heat pipe 31 is cooled. After the heat pipe 31 may be inserted into the hollow 331.

The first heat dissipating member 33 is in close contact with the rear side of the heat pipe 31 and is in intimate contact, and directly or the second heat dissipating heat of the LED module 10 transmitted by the heat pipe 31. It is discharged to the outside through the sieve 35.

The first heat radiator 33 includes a hollow 331 to which the heat pipe 31 is inserted and coupled, and a plurality of first heat radiating pieces 333 protruding in the longitudinal direction of the outer surface and arranged in a radial direction. .

Each of the first heat dissipation pieces 333 constitutes a pair, and between the pair of first heat dissipation pieces 333, the heat dissipation blade 35A of the second heat dissipation element 35 is slidably or It is fitted in an interference fit.

And it may be desirable to form a locking groove and a locking projection on the inner surface of the pair of first heat radiation piece 333 so that the heat dissipation blade 35A is not easily separated and detached, by pressing the outer surface of the fitted heat dissipation wing 35A It may be desirable to have elasticity to allow tightening.

The second heat dissipation member 35 is composed of a plurality of heat dissipation blades 35A respectively coupled between a pair of first heat dissipation pieces 333 radially formed on an outer surface of the first heat dissipation member 33. .

The heat dissipation blade 35A of the second heat dissipation member 35 is provided on a wing portion 351 protruding from the outer surface of the first heat dissipation member 33, and an inner end of the wing portion 351. It includes a coupling portion 353 is inserted between the pair of the first heat dissipation piece 333 and a plurality of expansion portions 355 protrudingly connected to both surfaces perpendicularly from the outside of the wing 351.

3, intake holes 37; 37a, b, c and exhaust holes 39; 39a, b, c are introduced into the heat dissipation assembly 30 in order to promote circulation of air to increase heat dissipation efficiency. A variant embodiment is shown.

Referring to FIG. 3, a plurality of intake holes 37a, 37b, 37c and exhausts which pass through the inside and the outside of the heat pipe 31, the first heat radiator 33, and the PCB 13 of the LED module 10, respectively. The balls 39a, 39b, 39c are formed.

The exhaust hole 39 is discharged to the outside air is warmed up and expands due to the heat generation of the LED module 10, the intake hole 37 is insufficient as the internal air is discharged through the exhaust hole 39 Inhale positive air from outside.

At this time, when the holes of the intake hole 37 and the exhaust hole 39 have a simple structure, that is, when the inner diameter is constant from the inside to the outside, the intake and exhaust are not made smoothly. That is, the names are only the intake and exhaust holes, and both the intake and exhaust are performed in the intake and exhaust holes, respectively, so that the intake air and the exhaust air collide with each other and collide with each other. Will interfere with each other. As a result, the circulation of the air in which the internal air and the external air are replaced is not performed properly.

Therefore, the intake hole is required to be superior to the exhaust action in the intake hole, and the intake hole and exhaust hole having a structure that allows the circulation of air to be smoothly performed so that the exhaust action is performed superior to the intake action are required.

In order to allow the intake action to be performed in the intake hole and the exhaust action to be superior in the exhaust hole, the present invention has an external light narrowing structure in which the inner diameter is gradually shortened while the intake hole 37 is moved from the outside to the inside, and the exhaust hole 39 The internal and external narrowing structure of which the inner diameter gradually increases while going from the outside to the inside.

The intake hole 37 of the outer light inner narrow structure has a long inner diameter, and the surrounding air gathers and enters the intake hole 37, and the collected outside air enters the intake hole 37 whose inner diameter decreases, and the speed increases. Faster, the outside air introduced into the interior through the intake hole 37 expands and expands at the moment when the space is introduced into the wide interior, and attracts the air following through the intake hole 37. On the contrary, in the short inner diameter, the amount of internal air gathered around the intake hole 37 is small, and the speed of passing through the intake hole 37 becomes slow even when the internal air is introduced. Therefore, in the intake hole 37 of the external light inner narrow structure, the intake action of the outside air is superior to the exhaust action of the internal air, and once the intake action is started, the exhaust action becomes even finer and the intake action is smoothly performed. On the contrary, in the exhaust hole 39 of the light and outer narrow structure, the exhaust action is superior to the intake action.

As described above, the intake hole 37 having the external light narrowing structure and the exhaust hole 39 having the external light narrowing structure are respectively formed in the heat pipe 31 and the first heat radiator 33, and the LED module 10 is formed. It may also be formed on the PCB 13.

The heat pipe 31, the first heat sink 33, and the intake holes 37a, 37b and 37c and the exhaust holes 39a, 39b and 39c of the heat pipe 31 and the PCB 13 extend to each other. It is preferable to form the intake hole 37 and the exhaust hole 39 having a deeper length. In other words, the inner diameter of the intake hole 37b formed in the intake hole 37, for example, in the first heat radiator 33, coincides with the outer inner diameter of the intake hole 37a formed in the heat pipe 31. The intake hole 37 of one external light narrowing structure is formed from the pipe 31 to the first heat radiator 33.

The intake hole 37 and the exhaust hole 39 may be formed in a random position, but may be formed in a plurality of rows in the longitudinal direction, and all of the same rows may be formed as the intake hole 37 or the exhaust hole 39. It is desirable to allow external air to be exhausted and internal air to be exhausted to promote mutual intake and exhaust.

In addition, the exhaust hole 39 (which may include the intake hole) formed in the first heat radiator 33 is formed to pass through the first heat radiating piece 333 so that the exhausted air is radiated from the first radiating piece 333. It is preferable to generate the vortex phenomenon in the periphery while splitting and exhausting to both sides of the blade 35A.

The heat pipe so that the intake hole 37a and the exhaust hole 39a formed in the heat pipe 31 are correctly connected to the intake hole 37b and the exhaust hole 39b formed in the first heat radiator 33. Inserting the 31 into the hollow 331 of the first heat radiating member 33 is not easy.

Thus, the present invention forms a triangular pyramid-shaped guide groove 335 around the upper hollow 331 of the first heat radiator 33 and corresponds to the guide groove 335 on the outer surface of the heat pipe 31. A guide protrusion 315 of a shape was formed.

Thus, even if an error occurs in the insertion direction of the heat pipe 31, if the end of the guide protrusion 315 is in contact with the guide groove 335, the heat pipe 31 is inserted in the forward direction is inserted, the guide is inserted, When the protrusion 315 is seated in the guide groove 335, the heat pipe 31 is prevented from being inserted anymore, so that the intake hole 37a and the exhaust hole 39a of the heat pipe 31 are formed in the first heat radiator ( The intake hole 37b and the exhaust hole 39b of the 33 are correctly matched to each other.

In the above description of the present invention has been described with respect to the LED lighting device having a reflector having a light amplification effect having a specific shape and structure with reference to the accompanying drawings, the present invention can be variously modified and changed by those skilled in the art, Such modifications and variations are to be interpreted as falling within the protection scope of the present invention.

10: LED module
11: LED 13: PCB
20: reflector
21: first reflector 21a: first unit reflector
23: second reflector 23a: second unit reflector
30: heat dissipation assembly
31: heat pipe 33: the first radiator
35: second heat radiator 35A: heat dissipation wing
37: intake hole 39: exhaust hole
40: bulb 50: holder
60: bracket 70: floodlight panel
80: cover

Claims (4)

LED module;
A reflector including a first reflector arranged adjacent to the LED module and a second reflector connected to the front of the first reflector;
Heat dissipation assembly in contact with the PCB of the LED module;

The heat dissipation assembly includes a heat pipe in contact with the PCB of the LED module,
The LED module is arranged in a columnar shape on the exposed heat pipe,

The first reflector and the second reflector is composed of a plurality of powders assembled together,
An insertion hole is formed at one side of the powder in the longitudinal direction, and an insertion protrusion is formed at the other side of the powder to be inserted after being inserted into the insertion hole of the other powder, and at one side of the powder in the longitudinal direction to prevent occurrence of a height difference with another powder to be assembled. LED lighting device having a reflector having an optical amplification effect, characterized in that the step is formed. The method of claim 1,
The first reflector is composed of a plurality of first reflecting unit in a continuous array of triangular or trapezoidal flat plate,
The second reflector is inclined inwardly in front of the first reflector, the LED having a reflector having an optical amplification effect, characterized in that consisting of a plurality of second reflecting unit arranged in a continuous array of triangular or trapezoidal flat plate Lighting equipment. The method according to claim 1 or 2,
A bulb accommodating the reflector and the LED module therein;
Covering the front opening of the bulb, the light emitting panel for transmitting the light emitted from the LED module to irradiate forward; LED lighting apparatus having a reflector having a light amplifying effect further comprising. The method of claim 3, wherein
The holder is inserted into the outer periphery of the heat pipe, the holder fixedly mounted to the bulb; LED lighting apparatus having a reflector having a light amplifying effect further comprising.

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