KR101001953B1 - Light guide unit and led lamp using the same - Google Patents

Abstract

PURPOSE: A light guide unit and an LED lamp including the same are provided to improve the linearity of light by concentrating light through a lens groove and a guide groove of a light concentration diffuser. CONSTITUTION: A case(110) comprises a receiving groove(111), a penetration hole, a combining unit(113), and a frame(114). A light concentration diffuser(120) is inserted into the receiving groove of the case. The lens groove is formed in the center of the rear of the light concentration diffuser. An LED head is arranged in the lens groove. A guide groove(122) is formed from the center of the front to the rear of the light concentration diffuser. A diffusion pattern(125) is formed on the front of the light concentration diffuser to diffuse the light passing through the guide groove.

Description

LIGHT GUIDE UNIT AND LED LAMP USING THE SAME}

The present invention relates to a light emitting diode (LED) lamp, and more particularly, the linearity of the emitted light is excellent, and the diffusion angle can be adjusted to replace the 50W halogen lamp currently used with only 4 to 6W LEDs. The present invention relates to a light guide unit for adjusting a diffusion angle and an LED lamp including the same.

Common light bulbs used for lighting include fluorescent, incandescent or industrial neon lamps, most of which are gas discharge tube configurations in which gas is injected into a glass tube.

In the case of the general light bulbs described above, it may be the cause of air pollution when the gas leaks due to the burnout of the glass tube, and when the brightness is to be brightened, the power consumption increases accordingly, and power line construction must be performed accordingly, so There were problems such as excessive maintenance costs.

On the other hand, as an alternative to solve the problem of the above-mentioned bulbs, in recent years, the development of lighting fixtures using LEDs with low power consumption has been proposed. In the case of LED lamps, LEDs having high brightness and high lifespan are applied, and they are intense with high lifespan. Light emission is possible.

However, a lot of heat is generated due to the intense light emission of the LED lamp, there may be a glare problem because the LED light source is not properly concealed.

An object of the present invention is to provide a light guide unit that is excellent in the straightness of the light emitted, and can adjust the diffusion angle.

Another object of the present invention is to provide an LED lamp that can replace a 50W halogen lamp with four 4-6W LEDs including the light guide unit.

The light guide unit according to an embodiment of the present invention for achieving the above object is provided with a receiving groove having a shape of a cup having a larger front area than the rear surface, and penetrates so that the LED head portion protrudes inside the central portion of the rear surface. A case in which a ball is formed, and a coupling part extends from an edge of the rear surface to be coupled to the front surface of the substrate, and a front edge portion of which is formed in a square shape; And a shape corresponding to the accommodating groove to be inserted into the accommodating groove, wherein a lens groove is formed at the center of the rear surface so that the LED head is located at the lens groove, and a guide groove is formed in the rear direction at the center of the front surface. The light condensed through the lens groove is directed straight to the front surface, and an outer circumferential surface is integrally formed on the front surface to correspond to the inner circumferential surface of the edge portion of the case front surface, and the front surface is an outer portion of the guide groove. And a light collecting diffuser having a diffusion pattern for diffusing the emitted light.

LED lamp according to an embodiment of the present invention for achieving the above another object is a circuit pattern formed substrate; At least one LED mounted on a front surface of the substrate and emitting light in a front direction through a head part; A power supply unit connected to an external power source and supplying DC power for driving each of the LEDs; An accommodation groove having a shape of a cup having a larger front area than the rear surface is provided, and a through hole is formed in the center of the rear surface so that the LED head portion protrudes inward, and a coupling portion of the rear surface is coupled to the front surface of the substrate. A case extending from an edge, the front side of which has a rectangular edge portion formed; And a shape corresponding to the accommodating groove to be inserted into the accommodating groove, wherein a lens groove is formed at the center of the rear surface so that the LED head is located at the lens groove, and a guide groove is formed in the rear direction at the center of the front surface. The light condensed through the lens groove is directed straight to the front surface, and an outer circumferential surface is integrally formed on the front surface to correspond to the inner circumferential surface of the rim portion on the front surface of the case. And a light collecting diffuser having a diffusion pattern for diffusing the light to be formed.

The light guide unit according to the present invention has the advantage of being able to concentrate the light toward the front through the lens groove and the guide groove provided in the light condensing diffuser, the excellent straightness of the light emitted to the outside.

In addition, the diffusion pattern on the front of the light diffusing body can be easily formed such that the diffusion angles are 10 °, 30 °, etc., and the light diffusing angles can be replaced according to the diffusion angle as needed. There is an advantage that can be adjusted.

In addition, there is an advantage that can be concealed from the outside of the LED as a light source through a diffusion pattern formed on the front surface and the guide groove center surface of the light collecting diffuser.

Therefore, the LED lamp according to the present invention including the light guide unit has the advantage that can completely replace the 50W halogen lamp currently used only by 4 to 6W LED sphere.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a light guide unit and an LED lamp including the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a light guide unit for an LED lamp according to the present invention.

The light guide unit 100 illustrated in FIG. 1 is used to guide the emitted light of the LED 520 illustrated in FIG. 5, and includes a case 110 and a light converging diffuser 120. As will be described later with reference to FIG. 5, the LED 520 is mounted on the front surface of the substrate 510 and light is emitted to the front direction through the head part 521.

case

The case 110 is a part that forms the appearance of the light guide unit 100 according to the present invention and is coupled to a substrate on which the LED is mounted.

FIG. 2A is a vertical sectional view of the case, FIG. 2B shows a front view of the case, and FIG. 2C shows a rear view of the case.

1 and 2a to c, the illustrated case 110 is provided with a receiving groove 111 having a shape of a cup having a larger front area than a rear surface thereof. Here, the front surface means the surface in the direction in which light is emitted, and the rear surface means the opposite surface.

The through hole 112 is formed at the center of the rear surface of the case 110 to protrude into the receiving groove 111. In addition, the coupling portion 113 is formed at the edge of the rear surface of the case 110 so as to be coupled to the front surface of the substrate (510 of FIG. 5). Coupling portion 113 may be formed to extend only at the edge, as shown in Figure 1, it may be formed in the structure formed extending to the front side as well as outward from the edge of the rear surface.

The coupling portion 113 of the case 110 may be coupled to the front surface of the substrate by an adhesive or the like, but when the light guide unit needs to be replaced, there is a problem in that the separation is not easy. Therefore, the coupling portion 113 is preferably screwed to the substrate, for this purpose, a fastening hole 113a may be formed.

And, the front edge of the case 110 is formed with a rectangular edge portion 114 is extended. The edges 114 and 124 of the case 110 and the front edges 114 and 124 on the front surface of the light converging diffuser 120 to be described later are because it is the easiest to continuously arrange the light guide units in the horizontal direction and the vertical direction.

Condenser

Condensing diffuser 120 is a portion in the light guide unit 100 according to the present invention to improve the straightness of the light emitted through the LED head portion, and to give a diffusion effect, is inserted into the case 110.

3A is a vertical cross-sectional view of the light condenser, FIG. 3B is a front view of the light condenser, and FIG. 3C is a rear view of the light condenser.

1 and 3A to 3C, the light condensing diffuser 120 has a shape corresponding to the accommodating groove 111, that is, a shape larger in area than the rear surface thereof so as to be inserted into the accommodating groove 111. Have

The lens groove 121 is formed at the center portion of the rear surface of the light collecting diffuser 120. Through this, the LED head portion 521 of FIG. 5 is positioned in the lens groove 121, and the light emitted from the LED head portion is collected through the lens groove 120 and collected in the front direction.

In addition, the guide groove 122 is formed in the rear direction at the center of the front surface of the light converging diffuser 120. The guide groove 122 guides the light emitted in the straight direction to the front side. Through this, the light collected through the lens groove 121 goes straight to the front side.

Like the case 110, the edge portion 124 is formed on the front surface of the light collecting diffuser 120. In this case, the outer circumferential surface corresponds to the inner circumferential surface of the edge portion 114 of the front surface of the case 110 so that the edge portion 124 of the light converging diffuser 120 may be fitted inside the edge portion 124 of the case 110. .

That is, the outer circumferential surface of the edge portion 124 on the front surface of the light converging diffuser 120 may have the same rectangular shape and area as the inner circumferential surface of the edge portion 114 on the front surface of the case 110. In addition, in order to increase the effect of interference fit, the outer circumferential surface of the edge portion 124 of the light converging diffuser 120 may have a size slightly larger than that of the inner circumferential surface of the edge portion 114 on the front of the case 110. have.

The edge portion 124 is not formed separately, but is integrally formed from the front surface, so that the front surface of the light converging diffuser 120 has one surface.

On the other hand, the edge portion 124 of the light collecting diffuser 120 may be rounded corners. In this case, after the edge portion 124 of the light condensing diffuser 120 is fitted inside the edge portion 124 of the case 110, there is a slight gap in the corner portion, so that the light condensing diffuser 120 is formed using this gap. It can be detached and replaced with other light diffusing body.

In addition, a diffusion pattern 125 is formed on the front surface of the light collecting diffuser 120 to diffuse light emitted to the outer portion of the guide groove 122. The diffusion pattern 125 serves to emit light to portions other than the front surface, to serve aesthetics according to the color of the LED, and to cover up the LED light source.

In this case, the diffusion pattern 125 may have a diffusion angle of 10 °, 30 °, or the like, depending on the pattern. In other words, if the diffusion angle is desired to be changed, the diffusion pattern 125 may be replaced with another light-diffusing diffuser 120.

In the condensing diffuser 120, not only the diffusion pattern 125 is formed on the entire surface, but also the diffusion pattern 126 may be formed on the center surface of the guide groove 122 of the condensing diffuser 120.

The diffusion pattern 126 is formed on the center surface of the guide groove 122, the guide groove 122 is located in front of the LED, and thus serves to conceal the LED, which is mainly a light source, and also serves to assist the aesthetics. Can be.

The light converging diffuser 120 may be formed of a polycarbonate or acrylic material that is transparent and has excellent heat resistance.

In order to reinforce the fastening of the case 110 and the light converging diffuser 120, the respective edge portions 114 and 124 may be fitted to each other. To this end, at least one locking hole 115 is formed in the edge portion 114 of the case 110, and the edge portion 124 of the light converging diffuser 120 is fitted into the locking hole 115. The locking protrusion 127 may be formed. The locking hole 115 and the locking protrusion 127 is preferably located at a diagonal position in each of the edge portions 114 and 124 so that the fitting portion is not biased to one side.

In addition, a plurality of guide ribs 116 may be formed on the inner surface of the case 110. The plurality of guide ribs 116 are in contact with the side surface of the light collecting diffuser 120 when the light collecting diffuser 120 is inserted. The guide ribs 116 reinforce the fixing after the light collecting diffuser 120 is inserted. The shake of 120 can be suppressed.

The plurality of guide ribs 116 may have a shape in which the height gradually increases from the front side to the rear side. This facilitates insertion of the light diffusing body 120 from the front side to the back surface, and further strengthens the fixing of the light collecting diffuser 120 side at the back side to suppress the shaking as much as possible.

In addition, in order to give a predetermined diffusion pattern in the front direction of the light collecting diffuser 120, the edge portion 114 of the case 110 is formed with an alignment groove 117 toward the rear side, and the edge portion of the light collecting diffuser 120 124 may be an alignment protrusion 128 corresponding to the alignment groove 117 of the case 110.

This is because when the light guide unit 100 according to the present invention is arranged continuously up, down, left, and right, when the light guide unit 100 implements a different diffusion angle for each light guide unit or a specific pattern by diffusion, Through the groove 117 and the alignment protrusion 128, it can be usefully applied by specifying the direction in which the light converging diffuser 120 is fitted to the case 110.

4A and 4B show an example in which the light guide units according to the present invention are continuously arranged.

In FIG. 4A, an example in which two light guide units are arranged in succession is shown. In FIG. 4B, an example in which four light guide units are arranged in succession is shown.

Each of the light guide units may be separately manufactured and arranged, and may be made by integrally deforming the case to be applied to FIG. 4A or 4B and inserting a light condenser into each receiving groove.

4A and 4B, the light guide unit according to the present invention can be arranged continuously up, down, left and right, in particular, a single sphere as shown in Figure 1, a two sphere as shown in Figure 4a, When using the three-spherical shape as shown in Figure 4b it is possible for a continuous arrangement of any pattern.

5 shows an example of an LED lamp according to the invention.

Referring to FIG. 5, the LED lamp according to the present invention includes a substrate 510, an LED 520, and a power supply 530, and the light guide unit described above is disposed on the front surface of the LED 520.

The circuit pattern is formed on the substrate 510. At least one LED 520 is mounted on the front surface of the substrate 510, and light is emitted to the front direction through the head part 521. The power supply unit 530 is connected to an external power source 531 and supplies a DC power source for driving each of the LEDs 520.

The light guide unit disposed on the front surface of the LED 520 includes a case 110 and a light collecting diffuser 120.

The case 110 is provided with a receiving groove 111 having a shape of a cup having a larger front area than the rear surface, and a through hole 112 is formed at the center of the rear surface such that the LED head portion protrudes inward, and the substrate Coupling portion 113 is formed to extend from the edge of the back so as to be coupled to the front surface of the front, is formed with a rectangular border portion 114 is extended.

The light converging diffuser 120 has a shape corresponding to the accommodating groove 111 so as to be inserted into the accommodating groove 111, and a lens groove 121 is formed at the center of the rear surface thereof, such that the LED head part is the lens groove 121. ), The guide groove 122 is formed in the rear direction at the center of the front surface to direct the light collected through the lens groove 121 to the front, the outer peripheral surface of the front edge of the case 114 A rectangular edge portion 124 corresponding to the inner circumferential surface is integrally formed, and a diffusion pattern 125 is formed on the front surface to diffuse light emitted to the outer portion of the guide groove 122.

Since the case 110 and the light converging diffuser 120 constituting the light guide unit are the same as described with reference to FIG. 1, detailed description thereof will be omitted.

In addition, since the LED lamp generates a lot of heat during driving, a heat sink 550 made of a metal having high thermal conductivity, such as aluminum, is disposed on the rear surface of the substrate to secure heat dissipation characteristics. In this case, in order to prevent the metal heat sink 550 from directly contacting the substrate 510, a thin insulating plate 540 is further disposed between the metal heat sink 550 and the substrate 510.

The LED lamp according to the present invention has the advantage of replacing the 50W halogen lamp currently widely used as four LEDs having a power consumption of 4 ~ 6W through the excellent straightness and diffusion control of the light guide unit disposed on the front of the LED. .

Although the above has been described with reference to one embodiment of the present invention, various changes and modifications can be made at the level of those skilled in the art. Such changes and modifications may belong to the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention will be determined by the claims described below.

1 is an exploded perspective view showing a light guide unit for an LED lamp according to the present invention.

FIG. 2A is a vertical sectional view of the case, FIG. 2B shows a front view of the case, and FIG. 2C shows a rear view of the case.

3A is a vertical cross-sectional view of the light condenser, FIG. 3B is a front view of the light condenser, and FIG. 3C is a rear view of the light condenser.

4A and 4B show an example in which the light guide units according to the present invention are continuously arranged.

5 shows an example of an LED lamp according to the invention.

Claims (10)

In the light guide unit for mounting the front of the substrate, the light guide unit for guiding the light emitted from the LED to the front direction through the head portion, A receiving groove 111 having a shape of a cup having a larger front surface than the rear surface is provided, and a through hole 112 is formed at the center of the rear surface such that the LED head portion protrudes inward, and is coupled to the front surface of the substrate. A coupling part 113 is formed to extend from an edge of the rear surface, and a case 110 having an edge portion 114 of a square shape extending from the front surface thereof; And It has a shape corresponding to the accommodating groove 111 to be inserted into the accommodating groove 111, the lens groove 121 is formed in the center of the back surface, the LED head portion is located in the lens groove 121, the front A guide groove 122 is formed at the center portion in the rear direction, and the light collected through the lens groove 121 goes straight to the front surface. An outer circumferential surface thereof has a square shape corresponding to the inner circumferential surface of the edge portion 114 of the case front surface. A condenser diffuser 120 having integrally extending edges 124 and a diffusion pattern 125 formed on the front surface to diffuse light emitted to the outer portion of the guide groove 122; Including, The coupling portion 113 of the case 110 has a fastening hole 113a for screwing to the substrate, At least one catching hole 115 is formed in the edge portion 114 of the case 110, and a catching protrusion fitted to the catching hole 115 in the edge portion 124 of the light converging diffuser 120. 127 is formed, On the inner side of the case 110, a plurality of guide ribs 116 having a shape that gradually increases in height from the front side to the rear side for fixing the condensing diffuser 120 is formed, The edge portion 114 of the case 110 is formed with an alignment groove 117 toward the rear side, and the edge portion 124 of the light converging diffuser 120 corresponds to the alignment groove 117 of the case 110. The light guide unit, characterized in that the alignment projection 128 is formed. The method of claim 1, The light guide unit, characterized in that the diffusion pattern (126) is formed in the center surface of the guide groove (122) of the light collecting diffuser (120). A substrate 510 on which a circuit pattern is formed; At least one LED 520 mounted on a front surface of the substrate 510 and emitting light in a front direction through a head part 521; A power supply unit 530 connected to an external power source 531 and supplying DC power for driving each of the LEDs 520; A receiving groove 111 having a shape of a cup having a larger front surface than the rear surface is provided, and a through hole 112 is formed at the center of the rear surface such that the LED head portion protrudes inward, and is coupled to the front surface of the substrate. A coupling part 113 is formed to extend from an edge of the rear surface, and a case 110 having an edge portion 114 of a square shape extending from the front surface thereof; And It has a shape corresponding to the accommodating groove 111 to be inserted into the accommodating groove 111, the lens groove 121 is formed in the center of the back surface, the LED head portion is located in the lens groove 121, the front A guide groove 122 is formed at the center portion in the rear direction, and the light collected through the lens groove 121 goes straight to the front surface. An outer circumferential surface thereof has a square shape corresponding to the inner circumferential surface of the edge portion 114 of the case front surface. A condenser diffuser 120 having integrally extending edges 124 and a diffusion pattern 125 formed on the front surface to diffuse light emitted to the outer portion of the guide groove 122; Including, The coupling portion 113 of the case 110 has a fastening hole 113a for screwing to the substrate, At least one catching hole 115 is formed in the edge portion 114 of the case 110, and a catching protrusion fitted to the catching hole 115 in the edge portion 124 of the light converging diffuser 120. 127 is formed, On the inner side of the case 110, a plurality of guide ribs 116 having a shape that gradually increases in height from the front side to the rear side for fixing the condensing diffuser 120 is formed, The edge portion 114 of the case 110 is formed with an alignment groove 117 toward the rear side, The edge portion 124 of the light converging diffuser 120 has an alignment protrusion 128 corresponding to the alignment groove 117 of the case 110. The method of claim 3, The LED lamp further comprises an insulating plate (540) disposed on the rear surface of the substrate (510) and a metal heat sink (550) disposed on the rear surface of the insulating plate (540). The method according to claim 3 or 4, The LED 120 has a power consumption of 4 ~ 6W, LED lamp, characterized in that four are arranged. delete delete delete delete delete

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