KR101964772B1 - LED illumination lamp - Google Patents

Abstract

The present invention is easy to manufacture and simple assembly structure to reduce the manufacturing cost, light weight, beautiful appearance, LED light that can discharge the heat generated from the LED to the outside of the housing quickly and efficiently by using the convection circulation phenomenon It is intended to provide, for this purpose and a housing having a reflector and a support unit formed integrally with the reflector; It is fixedly installed in the housing, the LED circuit board and a plurality of LEDs are arranged in an array, the heat sink is installed side by side on the upper side with a predetermined space (up and down space) with the LED circuit board, and a plurality of vents are formed ; A plurality of air suction holes formed in a circumference through the housing wall to communicate with the space between the LED circuit board and the heat sink; A support bracket having a lower end fixed to the heat dissipating plate and an upper end protruding upward through a central upper portion of the support part of the housing and attached to the ceiling; A power supply unit installed to be fixedly supported by the support bracket to supply electricity to the LED; And an air discharge hole formed in the housing so as to discharge the hot air from the outside between the protrusions protruding to the upper portion of the support bracket.

Description

LED lighting lamp {LED illumination lamp}

The present invention relates to a lamp, in particular an LED lamp having excellent heat dissipation characteristics.

In the case of indoor lighting in factories, homes, and offices, and outdoor lightings, conventionally, light has been irradiated by using incandescent lamps, fluorescent lamps, or halogen lamps.

In particular, a large amount of outdoor street lamps and ceiling lights of factories installed on highways, major roads, commercial district roads, residential district roads, parks, etc. And the high installation location requires large illuminance, thus requiring more power consumption.

Therefore, in recent years, it generates less heat than conventional lighting sources, has the advantages of low power consumption, long life and impact resistance, and does not cause environmental pollution since it does not use mercury or discharge gas such as fluorescent lamps in the manufacturing process. As a light source having an LED as a light source has been spotlighted as an indoor and outdoor lighting source including a street light, it is rapidly replacing a luminaire using a conventional light source such as a fluorescent lamp and an incandescent lamp.

However, if the driving current is increased to the LED in order to obtain a high brightness and high power light source, the heat generated from the LED is increased, the LED is vulnerable to heat due to its characteristics, and in particular, the junction portion of the LED circuit board and the LED may be in a high temperature state. As the temperature of the junction increases, the light output and efficiency are not only reduced, but the operating life is also reduced. In order to improve the lighting performance and the service life, the heat generated from the junction of the LED is emitted to the outside as quickly as possible. You must do it.

In order to solve this problem, the LED lamp is generally designed to attach a heat sink having excellent thermal conductivity so that heat generated from the LED lamp is discharged into the air through the heat sink.

1 illustrates a heat dissipation structure of an LED lamp 90 having a conventional general structure. The heat dissipator 94 having a plurality of heat dissipation fins 92 formed to increase a contact area with air has excellent thermal conductivity. It is formed by molding aluminum casting or die casting, the reflector 96 for mounting and fixing the LED circuit board in which the LED elements arranged in the lower part of the aluminum radiator 94 and the power supply for supplying power to the LED elements and a power supply 98 and a support frame 100.

However, according to the structure of the conventional heat sink 94, since it is produced by casting or die-casting using aluminum, the weight is high, and separately produced a reflection shade 96 for mounting and fixing the LED circuit board inside the heat sink (94) and the manufacturing and assembly costs are high, in particular, the high-temperature air generated from the LED circuit board is not directly discharged to the outside directly through the heat sink fin 92 of the heat sink 94 is indirectly cooled Therefore, in the case of a high-power LED lamp having a high heat generation, there is a problem of shortening the life of the LED device due to the difficulty of efficient heat dissipation, thereby increasing the maintenance cost.

Korea Patent Registration No. 10-1468849 Korea Patent Registration No. 10-1537580 Korean Patent Publication No. 10-2011-0065835 Korean Patent Registration No. 10-1231551

Accordingly, the present invention has been proposed in view of the above problems, and is easy to manufacture and simple to assemble, thereby reducing manufacturing cost, light weight and beautiful appearance, and efficiently and directly rapidly using heat generated from the convection circulation of LEDs. It is an object of the present invention to provide an LED lamp that can be discharged out of the housing.

LED lighting lamp of the present invention for achieving the above object and a housing having a reflector and a support unit formed integrally with the reflector; It is fixedly installed in the housing, the LED circuit board and a plurality of LEDs are arranged in an array, the heat sink is installed side by side on the upper side with a predetermined space (up and down space) with the LED circuit board, and a plurality of vents are formed; ; A plurality of air suction holes formed in a circumference through the housing wall to communicate with the space between the LED circuit board and the heat sink; A support bracket having a lower end fixed to the heat dissipating plate and an upper end protruding upward through a central upper portion of the support part of the housing and attached to the ceiling; A power supply unit installed to be fixedly supported by the support bracket to supply electricity to the LED; And an air discharge hole formed in the housing so as to discharge the hot air from the outside between the protrusions protruding to the upper portion of the support bracket.

According to the present invention, a plurality of spacers are provided between the LED circuit board and the heat sink to maintain a space.

According to the present invention, the LED circuit board and the heat sink is mounted to the fixed portion of the letter A cross-sectional shape that connects the reflector and the support of the housing, the LED circuit board and the heat sink through the plurality of bolt fixing means fastened up and down It is characterized in that the mounting portion is supported.

According to the present invention, the lower end of the LED circuit board is provided with a transparent or translucent protective cover for transmitting the light emitted from the LED.

According to the present invention, the electric wire drawn out from the power supply is configured to be connected to the LED through a wire induction member fixedly installed through the LED circuit board and the heat sink.

According to the present invention, the wire guide member has a hollow cylindrical body whose upper end protrudes upward through the central portion of the heat sink and is open toward the upper space, and the lower end protrudes toward the lower space through the LED circuit board. And a hemispherical body formed integrally in a concave shape so as to surround the lower end of the cylindrical body, and a wire drawing groove formed in each of the lower part of the cylindrical body and the outer periphery of the hemisphere.

According to the present invention, the cylindrical body of the wire guide member is formed with a plurality of through holes communicating with the space between the LED circuit board and the heat sink.

According to the present invention, the housing is characterized in that the injection or blow vacuum molding to form a single body using a heat-resistant resin or polycarbonate.

According to the present invention, the cover is mounted on the upper part of the protrusion of the support bracket to cover the air discharge hole of the housing, and the eye bolt fixture which is fastened through the rope to the ceiling is fastened through the cover and the protrusion. It features.

According to the LED lamp of the present invention, the warm air containing the heat generated from the LED circuit board rises upward through the air vents of the heat sink through the space between the heat sink due to the lower density of air formed at the top of the housing It is discharged to the outside through the discharge hole, and negative pressure is formed in the space in conjunction with this upward airflow, so external cold fresh air flows into the space between the LED circuit board and the heat sink through the plurality of air suction holes formed in the air housing. Therefore, since the LED circuit board is cooled, heat dissipation cooling is efficiently performed while the air is naturally circulated by the air convection phenomenon.

By the heat dissipation cooling by such a circulation method, it is possible to manufacture by injection or blow vacuum molding using a PC without the casting or die-casting of the heat dissipation having conventional heat dissipation fins, greatly reducing the weight and manufacturing cost, a Since the LED circuit board and the heat sink are closely attached to the fixing part of the self-sectional shape, it can be easily installed through a plurality of bolt fixing means, and thus the assembly structure is extremely simple, and thus, the housing of the single body can be manufactured, thereby providing excellent lighting. have.

In addition, it is possible to circulate the air through the wire guide member while processing the wires supplying electricity to the LED invisible, which is more effective in the external discharge of heat generated from the LED.

1 is a view showing a heat radiation structure of a conventional LED lamp.
Figure 2 is a front sectional view showing an LED lamp according to the present invention.
3 is a perspective view showing a housing of the LED lamp according to the present invention.
Figure 4 is a plan view showing a heat sink of the LED lamp according to the present invention.
5 is a plan view showing an LED circuit board of the LED lamp according to the present invention.
Figure 6 is a perspective view showing a state in which the support bracket is mounted on the heat sink of the present invention.
7 is a plan view of the support bracket is mounted on the housing of the present invention.
8 is a perspective view showing the wire guide member of the present invention.
9 is a perspective view showing a protective cover of the present invention.
10 is a view showing for explaining the heat radiation cooling of the LED lamp according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

Figure 2 is a view showing a cross-sectional view of the shape of the LED lamp according to the present invention, the LED lamp is shown with the entire reference numeral 10.

The LED lamp 10 of the present invention has a housing 12 which is injected or blow vacuum molded using a heat resistant resin or in particular a polycarbonate (PC), and a plurality of LEDs (14) inside the housing (12). And a support bracket 22 for attaching the LED circuit board 16, the aluminum heat sink 18, the power supply device 20, and the lamp 10 to the ceiling.

3 is a perspective view showing the shape of the housing, wherein the housing 12 reflects light emitted from the LED 14 and reflects light so that the light is not diffused so much that the light is concentrated toward a desired area. 24 and a support portion 26 extending to the upper portion of the reflector 24, interposed between the reflector 24 and the support portion 26 is a fixed portion 28 of the cross-sectional shape, the housing ( 12) is manufactured in a single body by injection or blow vacuum molding using a heat-resistant resin or in particular polycarbonate, and is manufactured in contrast with a method in which a conventional heat sink is manufactured by casting or die casting and then assembled with a reflection shade manufactured separately. And a significant reduction in assembly costs.

The LED circuit board 16 and the heat sink 18 are fixedly mounted to the fixing part 28 of the housing 12, and the LED circuit board 16 and the heat sink 18 are formed of a plurality of small cylindrical spacers 30. Or a single spacer by a ring-shaped disk member having a large hole to maintain a predetermined space (spacing) 32, and a washer 34 of a metal or heat-resistant resin material formed of a cushioning material or a heat insulating material. ) Is fixed using a plurality of bolt fixing means (36) consisting of bolt nuts, and at this time, a transparent or translucent protective cover (38) is provided on the lower portion of the LED circuit board (16) via a washer (34). The light emitted from the LED 14 is transmitted through the protective cover 38 so as to illuminate the lower region by being fastened by the bolt fixing means 36.

4 is a plan view showing a heat sink according to the present invention, wherein the heat sink 18 is made of a disc having a predetermined thickness of a metal material, preferably aluminum, having excellent thermal conductivity, and a plurality of rows are arranged concentrically circumferentially. A plurality of holes, that is, the vent holes 40 are formed in the shape, so that the space 32 provided between the LED circuit board 16 and the heat sink 18 through the vent holes 40 through the housing 12 Inside, in particular, the upper space 42 formed in the interior of the support portion 26 as the upper portion of the heat dissipation plate 18 is communicated, and to fasten the bolt fixing means 36 along the edge of the heat dissipation plate 18. A plurality of bolt holes 44 are formed in the corresponding positions, and a hole 48 for installing the wire guide member 46 to be described later is formed in the center portion.

5 is a plan view showing the LED circuit board 16 of the present invention, the substrate 16 is formed in a disk shape made of a metal PCB, the LEDs 14 are mounted so as to form a plurality of concentric concentric columns. A plurality of bolt holes 50 are formed at the corresponding positions to fasten the bolt fixing means 36 along the edge of the substrate 16, and the wire guide member 46 is described later in the center. A hole 52 for installing the grooves is formed.

In the LED lamp 10 of FIG. 2, both lower end portions 54 of the support bracket 22 formed by sheet metal bending a steel plate having a predetermined thickness having a strength capable of supporting the lamp on the upper surface of the heat sink 18. ) Is fixedly mounted through welding or bolt fixing means, and a protrusion 56 is formed at a center upper apex of the support bracket 22 in a shape in which a c-shaped opening faces downward, and the protrusion 56 is formed. The planar shape of the quadrangular, preferably square, inscribed in the air discharge hole 58 formed in the center apex of the support 26 of the housing 12, protrudes through the air discharge hole 58 to the upper housing Since the protrusions 56 are inscribed with respect to the air discharge holes 58, the four simulated portions of the protrusions 56 are fitted to the inner circumferential surface of the air discharge holes 58, and both side members 56 and 58 are provided. 4 spaces shaped like nails The inside and outside of the housing 12 through the nail-shaped space is configured to communicate with the air flow, the power supply device between the arm member 60 extending perpendicular to both sides of the support bracket 22 20 is fixedly mounted by fixing means such as screws.

As shown in FIGS. 2, 6, and 7, the upper surface of the protrusion 56 of the support bracket 22 has a disc-shaped cover 62 larger than the hole size of the air outlet hole 58. Is provided to block foreign matters such as dust from falling through the air discharge hole 58 to be introduced into the housing 12, and the eye bolt 66 having a circular ring 64 is covered with the cover 62. The upper surface of the protruding portion 56 is fastened to the nut 68 and fastened to the hook 64 of the eye bolt 66 by hanging a wire hanging from the ceiling so that the lamp 10 is suspended from the ceiling. do.

8 is a perspective view showing the wire guide member of the present invention, wherein the wire guide member 46 has an upper end projecting upward through the central hole 48 of the heat sink 18 and opening toward the upper space 42. It is fixed to the heat sink 18 or the LED circuit board 16 by the fastening of the welding or decomposable hairpin member, the lower end penetrates through the hole 52 of the LED circuit board 16 to the lower space ( 70) a hollow cylindrical body 72 protruding toward the side, a concave hemispherical hemispherical body 74 formed integrally to surround the lower end of the cylindrical body 72, a lower part of the cylindrical body 72 and the It includes wire drawing grooves (76, 78) formed on the outer circumference of the hemisphere (74) (wires extending from the power supply is connected to the LED through the cylindrical body and the wire drawing groove, Wires are omitted to avoid complication), and The cylindrical body 72 exposed to the space 32 is formed with a plurality of through holes 80 in the circumferential direction thereof, and optionally so that the cylindrical body 72 is opened through the hemisphere 74. Thus, the upper space 42 and the lower space 70 may be configured to communicate with each other through the cylindrical body 72, so that heat accumulated in the lower space 70 may be discharged to the upper space 42 side.

Meanwhile, in FIG. 2, the upper washers 34, the heat sink 18, the spacer 30, the LED circuit board 16, and the lower washers 34 are aligned with each other to fix the substrates 18 and 16. Inserted from the open bottom of the reflector 24 to the top to be in close contact with the upper horizontal surface of the L-shaped fixing portion 28, and then cover the protective cover 38 shown in Figure 9, the bolt fixing means 36 In this case, a plurality of air intake holes 82 are formed at predetermined intervals in the fixing portion 36 by rotating the circumference, that is, the space 32 may form the air intake holes 82. It is configured to communicate with the outside.

Hereinafter, a heat dissipation process of the LED lamp 10 of the present invention will be described with reference to FIG. 10.

When electricity is supplied from the power supply device 20 to the LEDs 14 of the LED circuit board 16, the light emitted from the LEDs 14 illuminates a predetermined area under the lamp through the protective cover 38. The heat generated in this process is accumulated in the LED circuit board 16 so that the LED circuit board 16 is heated, so that the heat in the space 32 is absorbed, and the air is absorbed into the substrate ( Heat exchanged from the heat exchanger 16 is transferred to and absorbed by the heat sink 18 again, and the heat of the heat sink 38 is discharged back to the upper space for use in heating the air in the upper space 42.

However, at this time, the air heated in the space 32 is lowered in density and rises, and the rising air flows into the upper space 42 through the plurality of vent holes 40 formed in the heat sink 18. The air introduced into the upper space 42 continues to rise and is discharged to the outside of the housing 12 through the air discharge hole 58. When the heated air rises and is discharged to the outside, the spaces 32 and 42 A negative pressure is formed, whereby fresh (relatively cold) air outside the housing is introduced into the space 32 through the air intake holes 82, and the introduction of the cold air cools the LED circuit board 16. When the heat emitted from the LED circuit board 16 reheats the air in the space and the air temperature rises, the air density decreases and rises to discharge to the outside, that is, the circulation process by convection is repeated. By (low temperature air flow The air flows into the housing through the ball, and the hot air flow repeats the circulation process discharged out of the housing through the air discharge holes), and efficiently heats and cools the heat generated by the LED circuit board 16 to the outside. .

On the other hand, since the hot air flows into the cylindrical body through the through holes 80 of the wire guide member 46, the wire guide member 46 wires the wire invisibly from the outside so as not to harm the aesthetics. At the same time, the heat dissipation function is also enhanced to increase the heat dissipation effect.

As described above, it has been described with reference to the preferred embodiment of the present invention, but those skilled in the art various modifications and changes of the present invention without departing from the spirit and scope of the present invention described in the claims below I can understand that you can.

10: LED light 12: housing
14: LED element 16: LED circuit board
18: heat sink 20: power supply
22: support bracket 24: reflection shade
26: support part 28: fixing part
30: spacer 32: space (spacing)
34: washer (upper, lower) 36: bolt fixing means
38: protective cover 40: vent
42: upper space 44: bolt hole
46: wire guide member 48: hole
50: bolt hole 52: hole
54: lower part 56: protrusion
58: air discharge hole 60: arm member
62: cover 64: collar
66: eye bolt 68: nut
70: lower space 72: cylindrical body
74: hemispherical body 76, 78: wire lead-out groove
80: through hole 82: air intake hole

Claims (9)

A housing having a reflector and a support formed integrally with the reflector; It is fixedly installed in the housing, the LED circuit board and a plurality of LEDs are arranged in an array, the heat sink is installed side by side on the upper side with a predetermined space (up and down space) with the LED circuit board, and a plurality of vents are formed; ; A plurality of air suction holes formed in a circumference through the housing wall to communicate with the space between the LED circuit board and the heat sink; A support bracket having a lower end fixed to the heat dissipating plate and an upper end protruding upward through a central upper portion of the support part of the housing and attached to the ceiling; A power supply device fixedly supported by the support bracket to supply electricity to the LED; And an air discharge hole formed in the housing so as to discharge the hot air from the outside between the protrusion protruding to the upper portion of the support bracket. The LED lamp according to claim 1, further comprising a spacer for maintaining a space between the LED circuit board and the heat sink. According to claim 1, wherein the LED circuit board and the heat sink is mounted to the fixed portion of the letter-shaped cross-section connecting the reflector and the support of the housing, the LED circuit board and the heat sink through a plurality of bolt fixing means fastened up and down LED lighting lamp, characterized in that the mounting portion is supported. The LED lamp of claim 1, wherein the lower end of the LED circuit board is provided with a transparent or translucent protective cover for transmitting light emitted from the LED. The LED lamp according to claim 1, wherein the electric wire drawn out from the power supply is configured to be connected to the LED through a wire induction member fixedly installed through the LED circuit board and the heat sink. 6. The hollow cylinder according to claim 5, wherein the wire guide member has an upper end projecting upward through the central portion of the heat sink and opening toward the upper space, and a lower end projecting toward the lower space through the LED circuit board. And a hemispherical body formed integrally in a concave shape so as to surround the lower end of the cylindrical body, and an electric wire drawing groove formed in the lower portion of the cylindrical body and the outer periphery of the hemisphere. Lighting. The LED lamp according to claim 6, wherein the cylindrical body of the wire guide member is formed with a plurality of through holes communicating with a space between the LED circuit board and the heat sink. The LED lamp of claim 1, wherein the housing is manufactured by injection molding or blow vacuum forming to form a single body using a heat resistant resin or polycarbonate. According to claim 1, The cover is mounted on the upper portion of the protrusion of the support bracket to cover the air discharge hole of the housing, the eye bolt fixture which is attached to the ceiling through the rope is fastened through the cover and the protrusion LED lighting lamp, characterized by having a.

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