KR101365992B1 - Structure of led lmap based on back light distribution - Google Patents

Abstract

The present invention relates to a structure of an LED lamp based on rear light distribution. The present invention includes: a light diffusion case (10) which is a molded window with polycarbonate material; and a circumference placement type LED device (20) enabling light to be investigated with the rear light distribution based on the light diffusion case (10) by which universal multiple LED devices on an upper surface of an original frame are arranged on the inner circumferential surface of the original frame. Therefore, the present invention provides the effect of having an excellent caustic ratio in contradiction to consumption power by which the light distribution is performed by the circumference placement type LED device placed on the upper surface of a heat sink that is separated from the light diffusion case.

Description

Structure of LED lmap based on back light distribution

The present invention relates to a post-light distribution-based LED lamp structure, and more specifically, by the post-light distribution has a characteristic of excellent cost ratio compared to power consumption, to minimize the number of parts and to optimize the weight and size After light distribution-based LED lamp structure.

In general, LED lamps, which are assembled in a high output light source, in particular in a small area, to provide a high output light source including a light emitting diode (LED) having a high power density, and other kinds of lamps are manufactured including a large number of parts.

LED lamps and other kinds of lamps using such an LED element is generally light distribution in which the light source is irradiated to the front surface of the case, or irradiation using more than the middle portion of the front surface. However, such a light distribution has a problem that there is a limit to the maximization of the light source.

Accordingly, in the technical field, there is a demand for developing a technology for improving the light efficiency by effectively using the effective space of a lamp by changing the conventional light distribution method using a more than a middle portion of the front side to a light distribution method.

[Related Technical Literature]

LED Assembleties ADJUSTING ASYMMETRIC LIGHT DISTRIBUTION, LED ASSEMBLY BLOCKS OF ATTACHABLE AND DETACHABLE TYPE USING THE SAME, AND LED APPARATUS HAVING BLOCK ASSEMBLY STRUCTURE OF ATTACHABLE AND DETACHABLE TYPE) (Patent Application No. 10-2010-0047882)

2. Lighting device using light emitting diode (ILLUMINATING APPARATUS USING LED) (Patent Application No. 10-2009-0100701)

3. LIGHTING APPARATUS USING LED (LED Application No. 10-2010-0061192)

The present invention is to solve the above problems, the post-light distribution is made by the circumferential arrangement type LED element disposed on the upper surface of the heat sink spaced apart from the light diffusion case, so as to have an excellent cost-performance ratio compared to the power consumption To provide a light distribution-based LED lamp structure.

In addition, the present invention provides a post-light distribution-based LED lamp structure to minimize the number of parts and to minimize the cost through the structural design of light diffusion case, columnar LED element and heat sink for optimization of weight and size It is to.

In addition, the present invention is to provide a post-light distribution-based LED lamp structure to maximize the heat dissipation performance through the structural design for the curved projection of the heat sink.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

After the light distribution based LED lamp structure according to an embodiment of the present invention to achieve the above object, the light diffusion case 10 that is a molding window made of polycarbonate (polycarbonate) material; And a circumferentially arranged LED element 20 arranged on the inner circumferential surface of the disc frame, wherein a plurality of general purpose LED elements are arranged on the top surface of the disc frame so that light is irradiated to the rear light distribution based on the optical case case 10. And a control unit.

The present invention, the heat sink 30 is formed by using a die-casting casting in a shape in which the 20 to 28 projections are rotated at the rear end of the columnar LED device 20 while forming a rotation type; .

In addition, in another embodiment of the present invention, a plurality of spaced apart from each other on the outer circumferential surface in a shape that is bonded to the rear surface of the circumferential arrangement type LED device 20, the diameter gradually decreases from the upper end to the lower end in a curved shape. Heat sink 30 is formed by gathering the curved projection (P); .

At this time, each of the curved projections P, it is preferable that the wave shape of the continuous pattern in the form of a wave fin in a round shape in the form of wave fins along the edge of the body of the heat sink 30 is formed.

In addition, the present invention is formed in a cylindrical structure for mounting the power supply unit 60 therein, the base portion 40 is formed in the shape of a screw protrusion type to be fastened to the inner peripheral surface of the socket portion 50 on the outer peripheral surface at the bottom ); .

In addition, the base portion 40 may have the same size as the circumference of the lowermost end of the heat sink 30 or the circumference of the lowermost end of the heat sink 30. It is preferably formed to a size in the range of ± 2% based on size.

In addition, the socket 50 receives power from the outside according to the voltage and current characteristics of the power supply 60 mounted on the base 40 and the columnar LED device 20. Is preferably formed.

In addition, the power supply unit 60 is a non-linear resistance element for adjusting the voltage-current characteristics of the columnar LED device 20, and the resistance value is remarkably changed in accordance with the voltage to allow the columnar LED to be used. It is preferably formed to protect the overvoltage supplied on the device 20.

In addition, each of the curved protrusions P forms a heat radiation fin, and a first-1 curve and a 1-2 curve are extended in a vertical direction, and the 1-1 curve has a 1-1 curvature. (Curvature 1_1) has a quantitative value (L11), and has a quantitative value (r11) as a 1-1 curve length (curve length 1_1), wherein the 1-2 curve, the 1-2 curvature (Curvature1_2) It is preferred to have a quantitative value (L12) in the (), and to have a quantitative value (r12) in the 1-2 curve length (curve length 1_2).

In addition, each of the curved protrusions P is formed as a second curve in a horizontal direction, and the second curve has a quantitative value L2 as a second curvature Curvature2 and a second curve length ( It is preferable to have a quantitative value r2 as curve length2).

In addition, it is preferable that L11: said L12: said L2 is 1.2-1.3: 1: 0.6-0.8, and said r11: said r12: said r2 is 1: 1.3-1.4: 0.5-0.6.

In this case, the light diffusion case 10 is divided into a curvature region of a first lens curve having a first lens curvature P1 and a second lens curve having a second lens curvature P2 in a vertical direction. The lens curve has a1 as the normal length in the vertical direction and preferably has a2 as the normal length in the vertical direction of the second lens curve.

In addition, the size relationship between the P1 and the P2 is 1: 1.4 to 1.5, and the a1: the a2 is preferably 4.1 to 4.3: 1.

Further, when a3 is the length from the upper surface of each LED element of the columnar LED element 20 to the length of the normal in the vertical direction in which the second lens curve is formed, the a1: the a3 is 4.1 to 4.3: 1.2. It is preferable.

According to an embodiment of the present invention, the light distribution-based LED lamp structure has post-light distribution by a circumferentially arranged LED device disposed on an upper surface of a heat sink spaced apart from a light diffusion case, thereby having excellent cost-to-power ratio. To provide the effect.

In addition, the light distribution-based LED lamp structure according to another embodiment of the present invention, through the structural design of the light diffusion case, the columnar LED element and the heat sink for minimizing the number of parts and optimization of weight and size It also provides an effect that can be minimized.

In addition, the post-light distribution-based LED lamp structure according to another embodiment of the present invention provides an effect of maximizing heat dissipation performance through the structural design of the curved protrusion of the heat sink.

1 is a perspective view showing a light distribution-based LED lamp 1 according to an embodiment of the present invention.
2 and 5 are side views of the post-light distribution-based LED lamp 1 of FIG.
FIG. 6 is a view showing a state viewed from the top of the post-light distribution-based LED lamp 1 of FIG. 1.
FIG. 7 is a view showing a state seen from the bottom of the LED lamp 1 based on the light distribution after FIG. 1.
FIG. 8 is a rendered view of the post light distribution based LED lamp 1 of FIG. 1.
9 is an exploded perspective view for explaining the internal structure of the LED lamp 1 based on the light distribution of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a perspective view showing a light distribution-based LED lamp 1 according to an embodiment of the present invention.

2 and 5 are side views of the post-light distribution-based LED lamp 1 of FIG.

FIG. 6 is a view showing a state viewed from the top of the post-light distribution-based LED lamp 1 of FIG. 1.

FIG. 7 is a view showing a state seen from the bottom of the LED lamp 1 based on the light distribution after FIG. 1.

FIG. 8 is a rendered view of the post light distribution based LED lamp 1 of FIG. 1.

9 is an exploded perspective view for explaining the internal structure of the LED lamp 1 based on the light distribution of FIG.

1 to 9, the rear light distribution-based LED lamp 1 includes a light diffusion case 10, a columnar LED device 20, a heat sink 30, a base part 40, and a socket part ( 50 and an archrich varistor 60.

The light diffusion case 10 is a molding window formed of a polycarbonate material by injection molding or blow molding, and is formed at a light weight.

The light diffusion case 10 performs a function of diffusing the light emitted from the columnar LED device 20 and transmitting it to the outside. On the other hand, in the present invention, for the convenience of description, the circumferentially arranged LED device 20, and the structure of the heat sink 30 as shown in Figs.

Meanwhile, referring to FIG. 3, the optical case 10 is divided into a curvature region of a first lens curve having a first lens curvature P1 and a second lens curve having a second lens curvature P2 in the vertical direction. Accordingly, the normal length in the vertical direction has the first lens curve a1 and the second lens curve has a2. Here, the size relationship between P1 and P2 has a size relationship of 1: 1.4 to 1.5, and the normal length a1: a2 has a size relationship of 4.1 to 4.3: 1.

Accordingly, when a3 is the length of the normal in the vertical direction in which the second lens curve is formed from the upper surface of each LED element of the columnar LED element 20, a1: a3, which is a size relation between a3 and a1, is It has a size relationship of 4.1 to 4.3: 1.2.

According to this quantitative numerical relationship, the efficiency of post-light distribution can be maximized as shown in FIG. 3. That is, the light source output to each LED element of the circumferentially arranged LED element 20 based on the focal point Pc of the light irradiation becomes a critical value at which the light efficiency can be improved due to the dual path of the straight path and the refractive path. Test results showed.

In the columnar LED device 20, a plurality of general purpose LED elements are arranged on the inner circumferential surface of the disc frame.

On the other hand, the light distribution by the light diffusion case 10 and the circumferential arrangement type LED element 20 is not on the front half (HALF) type light distribution but on the upper surface of the heat sink 30 spaced apart from the light diffusion case 10. Since the rear light distribution is performed by the arranged columnar LED device 20, the cost ratio compared to the power consumption is excellent.

The heat sink 30 is formed in a shape in which 20 to 28, preferably 24 protrusions are etched therebetween to form a rotation type. Here, the etched shape of the heat sink 30 is formed through die casting casting, and is also referred to as a die casting heat sink.

Since the heat sink 30 is formed in a curved protrusion shape, the manufacturing cost can be significantly lowered due to the minimization and light weight of the external heat sink fin. In addition, it is possible to overcome the limitations on the heat dissipation structure that was dependent on the optical characteristics of the conventional LED device.

More specifically, the heat sink 30 is bonded to the back of the circumferential arrangement type LED device 20, a plurality of spaced apart from each other on the outer circumferential surface in a shape that gradually decreases the diameter from the top to the bottom toward the bottom Curved protrusions P are formed by gathering.

Each curved protrusion P forms a heat dissipation fin, and is formed by extending the 1-1 curve and the 1-2 curve in the vertical direction.

The first-first curve has a quantitative value L11 as the curvature 1_1, the first--1 curve has a quantitative value r11 as the curve length 1_1, and the second 1-2. The curve has a quantitative value L12 with a 1-2 curvature Curvature1_2 and has a quantitative value r12 with a 1-2 curve length 1_2.

Each curved protrusion P is formed as a second curve in the horizontal direction. Here, the second curve has a quantitative value L2 as the second curvature Curvature2 and a quantitative value r2 as the second curve length2.

That is, each of the curved protrusions P has a wave fin shape and a round shape is formed in a wave shape of a continuous pattern in a fin shape with a wave along the edge of the body of the heat sink 30.

Here, looking at the relationship between the quantitative value on each curved projection (P) and the efficiency of heat dissipation are as follows. That is, the relationship of L11: L12: L2 is 1.2-1.3: 1: 1.0.6-0.8. Moreover, the relationship of r11: r12: r2 is 1: 1.3-1.4: 0.5-0.6. In the case of the relationship between the above quantitative values, the heat radiation efficiency is maximized as shown in the following table.

On the other hand, the following tables are described only in part of the test example to explain the main effect on the heat sink 30 according to the present invention, when the quantitative value described above as a result of comparison with the test example not described Critical significance was found.

In addition, the heat dissipation efficiency (%) per hour in the following [Table 1] to [Table 3] is the temperature according to the power supply for 1 hour without the installation of the heat sink 30 for the columnar LED device 20 Corresponds to the measurement and the average value according to the temperature measurement for 1 hour after installation on the heat sink 30 under the same conditions, and means an average value for the divided test for each parameter.

division L11: L12: L2 r11: r12: r2 Heat dissipation efficiency per hour (%) Test Example 1 0.7: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.5 to 0.6 21% Second test example 0.8: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.5 to 0.6 19% Third test example 0.9: 1: 0.6-0.8 1: 1.3 to 1.4: 0.5 to 0.6 17% 4th test example 1.0: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.5 to 0.6 16% Fifth Test Example 1.1: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.5 to 0.6 19% Sixth test example 1.2 to 1.3: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.5 to 0.6 25%

division L11: L12: L2 r11: r12: r2 Heat dissipation efficiency per hour (%) 7th test example 1.2 to 1.3: 1: 0.6 to 0.8 1.1: 1.3 to 1.4: 0.5 to 0.6 16% 8th test example 1.2 to 1.3: 1: 0.6 to 0.8 1.2: 1.3 to 1.4: 0.5 to 0.6 14% 9th test example 1.2 to 1.3: 1: 0.6 to 0.8 1.3: 1.3 to 1.4: 0.5 to 0.6 17% Tenth test example 1.2 to 1.3: 1: 0.6 to 0.8 1: 1.1 to 1.2: 0.5 to 0.6 19% Eleventh Test Example 1.2 to 1.3: 1: 0.6 to 0.8 1: 1.0 to 1.1: 0.5 to 0.6 20% 12th test example 1.2 to 1.3: 1: 0.6 to 0.8 1: 1.3 to 1.4: 0.4 to 0.5 21%

division L11: L12: L2 r11: r12: r2 Heat dissipation efficiency per hour (%) Test Example 13 1.2 to 1.3: 1: 0.9 1: 1.3 to 1.4: 0.5 to 0.6 13% Test Example 14 1.2 to 1.3: 1: 0.5 1: 1.3 to 1.4: 0.5 to 0.6 12%

Base portion 40 is formed in a cylindrical structure for mounting the power supply unit 60 therein, the lower end is formed in the shape of a screw projection type to be fastened to the inner peripheral surface of the socket portion 50 on the outer peripheral surface.

On the other hand, the base portion 40 is formed to have the same size as the circumference of the lowermost end of the heat sink 30 at the point of contact with the heat sink 30 or ± based on the size of the circumference of the lowest end of the heat sink 30. It is preferably formed in a size within the 2% range.

And in another embodiment of the present invention, as shown in Figure 9, the base portion 40 is formed with four bonding ends 41 on the surface in contact with the heat sink (30). Each bonding end 41 may be formed at intervals of 90 degrees. In this case, 12 curved protrusions forming the lower end of the heat sink 30 may be formed in a straight line. Here, a structure in which two curved protrusions are connected is formed in total, and a pair of curved protrusions is inserted between each pair. A total of four pairs of curved projections 31 thus formed are fastened at intervals of 90 ° to each of the bonding ends 41.

The socket part 50 is formed to receive power from the outside according to the contact current characteristic of the power supply part 60 mounted on the base part 40 and the columnar LED type device 20.

The power supply unit 60 is a non-linear resistance element for adjusting the voltage-current characteristics of the columnar LED element 20. The power supply unit 60 changes the resistance value in accordance with the voltage, thereby forming a phase on the columnar LED element 20. It is formed to protect the overvoltage supplied to it.

Meanwhile, in the present invention, the bolt b is formed in four pieces. The three-piece bolt b is used to fix the upper surface of the heat sink 30 at an angle of 120 ° on the horizontal plane with respect to the center of the disk-shaped columnar LED element 20.

And the other one piece of bolt (b) may be fastened to the rear end of the base portion 40 as shown, or may be formed to fasten the base portion 40 and the socket portion 50.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: light diffusion case
20: columnar LED element
30: heatsink
40: base part
50: socket
60: power supply

Claims (14)

A light diffusion case 10 formed of a polycarbonate material as a molding window; And
A circumferential arrangement type LED element 20 arranged on an inner circumferential surface of the disc frame with a plurality of general purpose LED elements on an upper surface of the disc frame such that light is irradiated to the rear light distribution based on the light diffusion case 10; Lt; / RTI >
The light diffusion case 10 is divided into a curvature region of a first lens curve having a first lens curvature P1 and a second lens curve having a second lens curvature P2 in a vertical direction, and the first lens curve is Has a1 as a normal length in a vertical direction, has a2 as a normal length in a vertical direction of the second lens curve, and a size relationship between P1 and P2 is 1: 1.4 to 1.5, and a1: a2 is 4.1. To 4.3: 1 after the light distribution based LED lamp structure.
The method according to claim 1,
A heat sink 30 formed at the rear end of the circumferentially arranged LED device 20 by using a die casting casting in a shape in which 20 to 28 protrusions are rotated and etched therebetween; After the light distribution based LED lamp structure further comprises.
The method according to claim 1,
A plurality of curved protrusions P, which are spaced apart from each other on the outer circumferential surface, are formed by joining to the rear surface of the circumferentially arranged LED device 20 and gradually decreasing in diameter from the top to the bottom. A heat sink 30; After the light distribution based LED lamp structure further comprises.
The method according to claim 3, wherein each of the curved projections (P),
After the light distribution-based LED lamp structure, characterized in that the wave shape of the wave pattern of the continuous pattern is formed in a wave-like fin shape along the edge of the heat sink 30 body.
The method of claim 3,
A base portion 40 formed in a cylindrical structure to mount the power supply unit 60 therein and formed in a screw protrusion type shape to be fastened to an inner circumferential surface of the socket portion 50 on an outer circumferential surface thereof at a lower end thereof; After the light distribution based LED lamp structure further comprises.
The method according to claim 5, The base portion 40,
The size of the circumference of the point of contact with the heat sink 30 is formed to be the same as the circumference of the bottom end of the heat sink 30, or the size within the range of ± 2% based on the size of the circumference of the bottom end of the heat sink 30 After light distribution-based LED lamp structure, characterized in that formed as.
The method of claim 5, wherein the socket portion 50,
After the light distribution base, characterized in that it is formed to receive power from the outside according to the voltage and current characteristics of the power supply unit 60, and the columnar LED device 20 mounted on the base portion 40 LED lamp structure.
The method according to claim 5, wherein the power supply unit 60,
As a non-linear resistance element for adjusting the voltage-current characteristics of the columnar LED device 20, an overvoltage supplied to the columnar LED device 20 by remarkably changing a resistance value according to a voltage. After light distribution based LED lamp structure characterized in that it is formed to protect.
The method according to claim 3, wherein each of the curved projections (P),
The heat dissipation fin is formed, and in the vertical direction, the 1-1 curve and the 1-2 curve are extended.
The 1-1 curve has a quantitative value (L11) with a 1-1 curvature (Curvature 1_1), has a quantitative value (r11) with a 1-1 curve length (curve length 1_1),
The 1-2 curve has a quantitative value (L12) in the 1-2 curvature (Curvature1_2), after having a quantitative value (r12) in the 1-2 curve length (curve length 1_2) Light distribution based LED lamp structure.
The method according to claim 9, wherein each of the curved projections (P),
In the horizontal direction is formed a second curve,
The second curve has a quantitative value (L2) as a second curvature (Curvature2), and a light distribution-based LED lamp structure characterized in that it has a quantitative value (r2) as a second curve length (curve length2).
The method of claim 10,
L11: L12: L2 is 1.2 to 1.3: 1: 0.6 to 0.8,
The r11: the r12: the r2 is 1: 1.3 to 1.4: 0.5 to 0.6 after light distribution based LED lamp structure, characterized in that.
delete delete The method according to claim 1,
When a3 is the length from the upper surface of each LED element of the columnar LED device 20 to the length of the normal in the vertical direction in which the second lens curve is formed, the a1: the a3 is 4.1 to 4.3: 1.2 After light distribution based LED lamp structure.

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