KR101526077B1 - LED lamp - Google Patents

Abstract

The present invention relates to an LED lamp. The LED lamp with an LED module includes a heat sink to which the LED module is fixed and which has a plurality of heat radiation pieces, a lens which includes an inclined surface to pass light emitted from the LED module and to refract the light in all directions and upper and lower cases in which the LED module and the heat sink are embedded and which mount the lens to protrude from the inside to the outside. The present invention uniformly diffuses the linearly distributed light to a front side and a lateral side and efficiently discharges heat by a space between the heat radiation pieces.

Description

LED lamps {LED lamp}

The present invention relates to an LED lighting lamp, and more particularly, to an LED lighting lamp that enlarges a narrow angle of view of an LED to diffuse the light evenly around the LED, and efficiently radiates heat.

In general, LED (Light Emitting Diode) has been recently applied to various lighting devices because it generates high luminance with low power consumption, is environment-friendly, has a long life and durability, and is used in various lighting devices such as a landscape lighting lamp, It has been applied in a wide range of fields.

Typically, an illumination device using such an LED is installed on a ceiling to illuminate an indoor space or to be installed at the top of a wall or a post to illuminate a certain outdoor space. For example, when the LED lighting apparatus is installed on a ceiling, an LED panel installed on a bottom surface of the LED is fixedly installed in a case opened to the lower side of the LED lighting apparatus. In order to diffuse the light emitted from the LED, Respectively. At this time, the LED panel is formed as a flat plate and installed parallel to the ceiling.

However, since such a LED has many advantages as described above, since it illuminates directly under the lighting device because it emits light in a straight line, the periphery of the direct downlight is dark due to relatively low illumination. In addition, there has been a problem that the heat dissipation structure must be improved in order to prevent overheating due to high heat generation of the LED.

KR2011-0068714 10

It is a first object of the present invention which is devised to solve the above-described problem that a diffusion member attached to a slope surface of a lens or one surface of a lens is placed on a light distribution path, The LED lighting lamp is provided.

A second object of the present invention is to provide an LED lighting lamp in which a heat sink is formed in a substantially trapezoidal side shape and a space is formed between the heat radiating pieces extending from the central portion, thereby efficiently radiating heat.

According to an aspect of the present invention, there is provided an LED lighting lamp including an LED module, the LED lighting module comprising: a heat sink to which an LED module is fixed; A lens having an inclined surface formed so that light emitted from the LED module passes through the lens while being refracted in four directions; And an upper case and a lower case each having a built-in LED module and a heat sink, the lens being mounted so as to protrude from the inside to the outside.

Here, the inclined surface may be a conical shape formed inside the lens or an inclined surface or a curved surface in a lens shape.

Further, in order to redirect the light refracted from the inclined surface, the surface or the inner surface of the lens, or the outer surface or the inner surface of the slanted surface or the curved surface of the lens may be subjected to a surface treatment for forming a plurality of embossings, dimples or refracting surfaces, And a diffusion member including a sheet or a film having a predetermined shape is attached.

One end of the lens is interposed with the inwardly bent upper end portion of the upper case so that the flange is formed to be inserted or withdrawn only in one direction to the upper case.

The heat sink includes a central portion formed to be flat and fastened to the LED module, and a plurality of heat dissipating pieces extending radially from the central portion to form a space while being spaced apart from each other.

The central portion includes a plurality of fastening grooves formed for screwing the LED module and a second wiring hole penetrating the LED module in the thickness direction to draw out the wire electrically connected to the LED module.

The inclined portion includes a first horizontal portion extending from the center portion, an inclined portion inclined downward from the first horizontal portion, a second horizontal portion extending from the inclined portion, and a second horizontal portion extending from the second horizontal portion. And a vertical portion extending from the lower portion.

In addition, a third mounting protrusion is formed on the second horizontal part of the several heat-radiating pieces having a certain interval among the heat radiating pieces, which is screwed together with the upper and lower cases.

The first horizontal part of the heat-dissipating piece is formed with a first mounting protrusion protruded to accommodate the LED module which is seated at the center.

The first horizontal part of some of the heat dissipating pieces has a second mounting protrusion protruded higher than the LED module seated at the center.

Further, a lens, a transparent cover, or a reflector is seated and fixed to the second mounting projection.

At this time, the transparent cover is characterized in that a sheet or film capable of refracting light is adhered to the transparent cover, a surface treatment for forming a plurality of embossings, dimples or refracting surfaces to transmit light emitted from the LED module to the lens, or the like.

The reflector reflects the lens-side light so as not to return to the LED module, and has a through hole formed to allow the light emitted from the LED module to pass therethrough.

As described above, according to the present invention, there is an effect that, by attaching the lens having the inclined surface formed therein, the straight advancing light is enlarged to the side.

Further, since the diffusing surface is formed on the outer surface of the lens, the light radially sidewardly diffused by the inclined surface diffuses again with the diffusing angle enlarged by the diffusing surface.

In addition, by mounting a heat sink having a downwardly extended side surface at the bottom of the LED, the heat generated from the LED is diffused and dissipated.

Further, since the heat sink is formed of a plurality of heat dissipating pieces and a space is formed therebetween, the heat dissipation can be actively performed.

Alternatively, the heat dissipating piece is exposed to the outside, and the outside air flows between the heat dissipating pieces, so that the heat of the heat dissipating piece can be efficiently cooled using the outside air.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be interpreted.
1 is a perspective view illustrating an LED lighting lamp according to a preferred embodiment of the present invention.
Fig. 2 is a perspective view showing the separated state of the lens and other components of Fig. 1;
Fig. 3 is a side view schematically showing the light distribution angle of the lenses of Figs. 1 and 2. Fig.
4A to 4C are a perspective view, a cross-sectional perspective view, and a schematic side view of the heat sink shown in Fig.
5A is a side view showing a first embodiment of the lens shown in FIG.
FIG. 5B is a perspective view showing the diffusion member shown in FIG. 5A. FIG.
6A and 6B are a perspective view and a cross-sectional perspective view showing a second embodiment of the lens shown in FIG.
FIG. 7 is a perspective view showing the LED lighting lamp of the first embodiment corresponding to FIG. 1; FIG.
Fig. 8 is a perspective view showing various LED lighting lamps in a state in which a modified example of the lens and the heat sink shown in Fig. 1 are applied. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Configuration>

FIG. 1 is a perspective view showing an LED illumination lamp according to a preferred embodiment of the present invention, FIG. 2 is a perspective view showing a separated state of the lens and other components in FIG. 1, Figs. 4A to 4C are a perspective view, a cross-sectional perspective view and a schematic side view of the heat sink shown in Fig. 1. Fig.

As shown in FIG. 1, the LED lighting lamp according to the present invention includes upper and lower cases 100 and 110, a heat sink 200, an LED module 300, a transparent cover 400, and a lens 500.

The upper and lower cases 100 and 110 are coupled to each other to allow the heat sink 200, the LED module 300 and the transparent cover 400 to be disposed therein, and a part of the lens 500 is gripped, .

Here, the upper case 100 has a generally trapezoidal shape in side view so as to incorporate a heat sink 200 having a trapezoidal side surface.

The lower case 110 is a substantially flat panel and is fastened to the upper case 100 through the third mounting projection 225 of the heat sink 200 (see FIG. 4A). The lower case 110 is formed with a first wiring hole 111 through which a wire electrically connected to the LED module 300 can be drawn out. 2 wiring hole 211 (see Fig. 4A) overlap with each other.

Here, the shapes of the upper and lower cases 100 and 110 can be changed into various shapes by combining shapes and complementing shapes. For example, the lower case 110 may be deformed into a ring shape so that external air may flow between the heat dissipating pieces 220 of the heat sink 200. [ Also, the upper case 100 may be directly fastened to the heat sink 200 with the lower case 110 removed. Also, the lower case 110 may be bowl-shaped, and the upper case 100 may be deformed into a substantially frustum shape. The upper and lower cases 100 and 110 may be deformed such that a part of the heat dissipating piece 220 is exposed to the outside between the lower case 110 and the upper case 100.

As shown in FIGS. 1, 4A and 4B, the heat sink 200 is a member that dissipates heat generated from the LED module 300. The heat sink 200 has a substantially trapezoidal shape whose lower portion is wider than the upper portion, The heat dissipating piece 220 is formed. This trapezoidal shape can be more efficiently dissipated as heat is diffused and conducted in the LED module 300.

 More specifically, the heat sink 200 includes a flat central portion 210, a plurality of heat dissipating pieces 220 extending radially from the central portion 210, and a plurality of heat dissipating pieces 220 extending from the heat dissipating pieces 220 A plurality of protruding first mounting protrusions 230 and a second mounting protrusion 240 formed between the first mounting protrusions 230 and configured to seat the transparent cover 400. [

The central portion 210 is a flat portion on which the LED module 300 is mounted and conducts heat generated in the LED module 300 to the heat dissipating piece 220. The center portion 210 has a thickness So that the heat can be radiated downward through the thickness portion, and even heat can be transmitted to the side of the heat dissipating piece 220 in the height direction. The thinner the thickness of the central portion 210, the narrower the heat conduction sites to be transmitted to the heat dissipating pieces 220, and the lower the heat dissipation effect, and therefore the thickness of the upper and lower cases 100 and 110, It is preferable to have a maximum height in consideration of weight, size, and the like.

The central portion 210 is provided with a plurality of fastening grooves formed for screwing the LED module 300 and a second fastening groove formed to penetrate the LED module 300 in the thickness direction to draw out a wire (not shown) A wiring hole 211 is formed. At this time, the fastening groove is formed around the second wiring hole 211. It goes without saying that heat is radiated through the second wiring hole 211.

The heat dissipation member 220 is a member for rapidly radiating heat from the central portion 210. The heat dissipation member 220 is radially extended from the flat central portion 210 and spaced apart from each other to form a space. The radiating piece 220 includes a first horizontal portion 221 extending from the central portion 210 and having the same or similar plane as the central portion 210, a first horizontal portion 221 extending from the first horizontal portion 221, The side surface including the inclined portion 222, the second horizontal portion 223 extending from the inclined portion 222 in a plane and the vertical portion 224 extending from the second horizontal portion 223, It is a right triangle.

The shape of the heat dissipation piece 220 has a high thermal conductivity at the central portion 210, so that the heat dissipation effect is maximized by enlarging the area of the high temperature portion. In the low temperature region, It is for this reason. In addition, the shape of the heat dissipating piece 220 also has the effect of reducing the total area and weight of the heat sink 200.

The second horizontal portion 223 of the plurality of heat dissipating pieces 220 at predetermined intervals among the heat dissipating pieces 220 is interposed between the upper and lower cases 100 and 110 to be screwed together with the upper and lower cases 100 and 110. [ A third mounting projection 225 is formed.

The first mounting protrusion 230 protrudes from the first horizontal portion 221 of the heat dissipating pieces 220 so as to insert the LED module 300 that is seated in the central portion 210. Accordingly, the first mounting protrusion 230 has the same shape as the flat shape of the LED module 300, and is formed to be in contact with the side surface of the LED module 300.

A plurality of second mounting protrusions 240 are formed at regular intervals between the first mounting protrusions 230 and the first horizontal protrusions 230. The first mounting protrusions 230 are mounted on the first mounting protrusions 230 so that the transparent cover 400 is seated. . At this time, the first mounting protrusion 230 is not formed, and only the second mounting protrusion 240 may be formed. The second mounting protrusion 240 is provided to prevent contact between the transparent cover 400 and the LED module 300. The minimum height of the second mounting protrusion 240 is greater than the height of the LED module 300, It should be high. The second mounting protrusion 240 is formed with a fastening groove to which the transparent cover 400 can be fastened.

The heat sink 200 is made of a thermal interface material (TIM) to minimize the contact resistance between the metal surface and the heat sink 200, thereby reducing the contact resistance between the heat sink 200 and the heat sink 200 by about 20% Can be reduced.

The LED module 300 is an element that emits an LED light, and the LED is housed on a printed circuit board. The LED module 300 is a typical one, and a detailed description thereof will be briefly described.

1, the transparent cover 400 is disposed on the upper side of the LED module 300 and is seated and fastened to the second mounting protrusion 240 of the heat sink 200. The transparent cover 400 is made of a transparent material including glass for transmitting light from the LED module 300 to the lens 500 and is interposed between the second mounting protrusion 240 and the lens 500, Thereby further strengthening the bonding.

The transparent cover 400 may be attached to the surface of the film or sheet to slightly diffuse and distribute the straightening light, or the surface may be processed to form a plurality of embossings, dimples or refracting surfaces, It is also possible to make it so as to diffuse light. However, since the brightness of the light may be remarkably lowered or the straightness of the light may be remarkably lowered by the member interposed between the LED module 300 and the lens 500, it is also possible to manufacture the LED lighting lamp by excluding the transparent cover 400 have. When the transparent cover 400 is removed as described above, the flange 520 of the lens 500 is directly fastened to the second mounting protrusion 240.

1 to 3, the lens 500 is a member for diffusing light introduced in a straight line and distributing the light to the side including the front side, and is made of a transparent material of glass or a polymer material capable of transmitting light . Here, the lens 500 is formed with an inclined surface 510 for diffusing the remainder while diffusing a part of light traveling straight ahead. It is preferable that the inclined surface is a substantially conical shape so as to reflect light introduced into a straight line at various angles. This inclined surface 510 may also refer to at least one inclined surface of the lens 500 as shown in FIG.

The inclined surface 510 may be formed to reflect all light sideways, or may be provided with a reflective member attached to the outer surface of the inclined surface 510 to reflect all the light sideways. In addition, a parallel portion may be formed from the inclined plane 510, or the straightness of light may be reinforced by the parallel portion in a state in which the lateral refraction of the light is enhanced by the inclined plane 510. Further, in order to further reinforce the straightness, a reflection sheet or film or the like may be attached to the parallel portion.

A flange 520 bent outward is formed at one end of the lens 500. The flange 520 is seated on the second mounting protrusion 240 and interlocked with the refracted upper end of the upper case 100 so that it can be inserted into or withdrawn from the upper case 100 in one direction, .

&Lt; Embodiment of lens >

FIG. 5A is a side view showing a first embodiment of the lens shown in FIG. 1, FIG. 5B is a perspective view showing the diffusing member shown in FIG. 5A, FIGS. 6A and 6B are cross- 1 is a perspective view and a cross-sectional perspective view showing an embodiment.

5A and 5B, a diffusion member 530 capable of further diffusing light onto a part or the entire surface of a lens 500 having an inclined surface 510 therein is illustrated as a first embodiment of the lens 500 It is manufactured by attaching to outer surface or inner surface. It is preferable that the diffusion member 530 is a diffusion sheet or diffusion film capable of diffusing light refracted by the inclined surface 510 at more various angles, as in Fig. 5B.

Further, various conventional surface treatments may be performed on the outer surface or inner surface of the lens 500 in place of the diffusing member 530 to refract and diffuse light, including a plurality of embossings, a plurality of dimples, or a plurality of refracting surfaces.

6A and 6B, the shape of the lens 500 is changed to a low-height bowl shape, and the curved surface of the bowl 500 forms an inclined surface 510, A film or sheet-shaped diffusion member 530 is attached to the inner surface or the outer surface of the inclined surface 510.

<Various Modifications of LED Lighting>

FIG. 7 is a perspective view showing the LED lighting lamp of the first embodiment corresponding to FIG. 1; FIG.

Fig. 8 is a perspective view showing various LED lighting lamps in a state in which a modified example of the lens and the heat sink shown in Fig. 1 are applied. Fig.

7, the heat sink 200, the lower case 110, the LED module 300, the reflector 410, the lens 500, And the upper case 100 in this order.

Such a structure allows the heat sink 200 to be exposed to the outside and the outside air can freely flow between the heat dissipating pieces 220, thereby further improving the heat radiation effect. The lower case 110 coupled to the upper case 100 is positioned at the center 210 of the heat sink 200 and is fastened to the heat sink 200. Of course, it is a matter of course that the lower case 110 is made of a material capable of conducting the heat generated from the LED module 300 to the heat sink 200.

The reflection shade 410 is formed with a through hole 411 at the center so that the light emitted from the LED module 300 flows to the lens 500 and the light refracted by the reflection shade 410 is directed toward the lens 500 And is made of a reflective material for retroreflection. The light emitted from the LED module 300 passes through the transmission hole 411 and then is refracted forward or laterally by the lens 500 having the inclined surface 510 to be irradiated, The light is refracted toward the LED module 300 by the lens 500 or the upper case 100 or the like and then refracted toward the lens 500 by the reflector 410.

Meanwhile, FIG. 8 shows various embodiments of the LED lighting lamp, and the shape, size and height of the lens 500 and the shape of the inclined surface 510 may be variously modified. Further, the shapes of the upper and lower cases 100 and 110 may be variously modified, and the height of the heat dissipation piece 220 of the heat sink 200 may be increased to further effectively dissipate heat.

Although not shown in the drawing, the LED illumination lamp can be modified in various other shapes and forms, and it is within the scope of the claims of the present invention to change only the shape or form in the configuration including the basic components of the present invention It should be recognized.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: upper case
110: Lower case
111: first wiring hole
200: Heatsink
210:
211: second wiring hole
220:
221: first horizontal part
222:
223: second horizontal part
224:
225: third mounting projection
230: first mounting projection
240: second mounting projection
300: LED module
400: transparent cover
410: reflector
411: Through hole
500: lens
510: slope
520: Flange
530: diffusion member.

Claims (13)

In the LED lighting lamp having the LED module 300,
A heat sink 200 to which the LED module 300 is fixed;
A lens 500 having an inclined surface 510 having a curved surface such that light emitted from the LED module 300 passes through and is refracted in all directions;
Upper and lower cases 100 and 110 having the LED module 300 and the heat sink 200 installed therein and the lens 500 protruding from the inside to the outside;
A reflector 410 interposed between the LED module 300 and the lens 500 for reflecting the light emitted from the LED module 300 toward the front side; And
A diffusion member 530 attached to the outer surface of the lens and refracting light; Including LED lights.
delete The method according to claim 1,
The diffusion member 530 may be in the form of a sheet and a film, such as an LED lamp, which is surface-treated with a plurality of embossings, dimples, or refracting surfaces.
The method according to claim 1,
Wherein a flange (520) is formed at one end of the lens (500) so as to interfere with an inwardly bent upper end of the upper case (100) so as to be inserted or drawn in only one direction to the upper case (100).
The method according to claim 1,
The heat sink 200 includes a central portion 210 formed to be flat and fastened so that the LED module 300 is seated thereon and a plurality of heat radiating pieces 210 extending radially from the central portion 210, (220). &Lt; / RTI &gt;
6. The method of claim 5,
The central part 210 includes a plurality of fastening grooves formed for screwing the LED module 300 and a second wiring hole formed through the LED module 300 in the thickness direction to draw out the wire electrically connected to the LED module 300 211). &Lt; / RTI &gt;
6. The method of claim 5,
The side surface of the radiating piece 220 is similar to a right triangle. The inclined portion has a first horizontal portion 221 extending from the center portion 210, an inclined portion inclined downward from the first horizontal portion 221 222), a second horizontal portion (223) extending from the inclined portion (222), and a vertical portion (224) extending from the second horizontal portion (223).
8. The method of claim 7,
A third mounting protrusion 225 is formed on the second horizontal portion 223 of the several heat dissipating pieces 220 having a predetermined gap among the heat dissipating pieces 220 so as to be screwed together with the upper and lower cases 100 and 110 Features LED lights.
8. The method of claim 7,
A first mounting protrusion 230 is formed on the first horizontal portion 221 of the heat dissipation member 220 to protrude to mount the LED module 300 mounted on the center portion 210. [ .
10. The method according to claim 7 or 9,
A second mounting protrusion 240 protruding from the LED module 300 mounted on the central part 210 is formed on the first horizontal part 221 of some of the heat dissipating pieces 220 of the heat dissipating pieces 220 And the LED lamp is formed.
11. The method of claim 10,
And the lens (500) or the transparent cover (400) is seated and fixed to the second mounting protrusion (240).
12. The method of claim 11,
Dimple or refracting surface to form the transparent cover 400 so as to transmit the light emitted from the LED module 300 to the lens 500. The transparent cover 400 may be formed of a sheet capable of refracting light, Film or the like is attached to the LED lamp.
The method according to claim 1,
The reflector 410 includes a transmission hole 411 through which the light emitted from the LED module 300 passes so as to reflect the light toward the lens 500 so as not to return to the LED module 300 Features LED lights.

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