CN203147373U - LED light bulb with high heat dissipation efficiency - Google Patents

Abstract

The utility model discloses a LED bulb that radiating efficiency is high, by lower supreme radiator, lamp stand, LED light source structure, the printing opacity cover of having connected gradually, still including the drive arrangement who arranges the radiator in. The utility model discloses the LED bulb has set up multiple heat dissipation measure: the upper end of the light-transmitting cover is provided with a heat dissipation port, the interior of the radiator is arranged to be of a hollow structure, the side face of the radiator is provided with a first ventilation hole, a first ventilation groove, a second ventilation hole and a second ventilation groove, and the outer side wall of the radiator is further provided with a first radiating fin and a second radiating fin.

Description

LED light bulb with high heat dissipation efficiency

technical field

The utility model relates to the field of LED lighting, in particular to an LED light bulb with high heat dissipation efficiency.

Background technique

Traditional light bulbs are incandescent light bulbs, which have low illuminance, dim light, and high energy consumption. Fluorescent energy-saving light bulbs appeared after incandescent light bulbs. Although they are energy-saving and bright, they are not environmentally friendly due to the large amount of fluorescent powder used. At present, more energy-saving and environmentally friendly LED bulbs have emerged. LED is different from incandescent lamps and fluorescent energy-saving lamps. It is a semiconductor that converts electrical energy into light energy. It has long life, high luminous efficiency, and Radiation, low energy consumption and other advantages, the above-mentioned many advantages make the application of LED bulbs more and more extensive. However, in the prior art, the heat dissipation problem of the LED light bulb is an important problem that needs to be solved urgently, and the quality of the heat dissipation effect is directly related to the luminous effect and the life of the lamp. The heat generated by the LED lamp bead is large, and the heat dissipation measures of the existing LED bulbs are varied, most of which are to promote heat dissipation by adding a radiator, but the existing radiator design has a small contact area with the air and cannot fully Air flow is used to improve heat dissipation efficiency, but the heat dissipation effect is not ideal, and it is easy to make the internal temperature of the LED bulb higher and higher, and finally greatly shorten the service life of the LED lamp bead and the driving device.

Therefore, how to realize an LED light bulb with high heat dissipation efficiency is a technical problem to be solved urgently in the industry.

Contents of the invention

The main purpose of the utility model is to provide an LED light bulb, aiming at realizing an LED light bulb with high heat dissipation efficiency.

The utility model proposes an LED light bulb with high heat dissipation efficiency, which is sequentially connected and fixed with a radiator, a lamp holder, an LED light source structure, and a light-transmitting cover connected to the upper end surface of the lamp holder and covering the LED light source structure from bottom to top. It includes a drive device placed in the radiator and electrically connected to the LED light source structure. The radiator is a hollow cylindrical hole, and the hollow cylindrical hole is divided into a lower cylindrical hole connected to each other and an upper cylindrical hole with a diameter larger than the lower cylindrical hole; It is a lower end part and an upper end part connected as a whole. The lower end part is a tower-shaped body, and a number of first ventilation holes are evenly arranged longitudinally on the outer wall of the tower-shaped body, and each first ventilation hole is longitudinally provided with a first ventilation groove. A number of Y-shaped first heat dissipation fins extend outward from the wall below the first ventilation hole; the upper part is longitudinally evenly provided with a number of second ventilation holes between the outer wall and the upper cylindrical hole, and the side wall of the upper cylindrical hole is in the The position corresponding to the second ventilation hole is longitudinally provided with a second ventilation groove connecting the second ventilation hole and the upper cylindrical hole, and a plurality of Y-shaped second cooling fins extend outward from the outer wall of the upper part.

Preferably, the driving device is adapted to the upper cylindrical hole and placed in the upper cylindrical hole, and a communication hole communicating with the lower cylindrical hole is provided on the side wall of the lower part of the radiator.

Preferably, the positions of the first ventilation holes and the second ventilation holes are set correspondingly, and the positions of the first ventilation slots and the second ventilation slots are set correspondingly.

Preferably, the LED light bulb also includes a bowl-shaped reflective cup that is connected to the upper end surface of the lamp holder and is reversed. The upper end of the light-emitting cup is provided with a through hole that is adapted to the LED light source structure and surrounds the LED light source structure. The surface is coated with a reflective layer.

Preferably, a cavity column with a concave cavity extends upwards from the center of the upper end surface of the lamp holder, and a hole for passing wires is provided at the bottom of the cavity, and the lamp holder is provided with an opening at the lower end of the light transmission cover at the position connected to the light transmission cover. Adaptive and interlocking ring slots.

Preferably, the LED light source structure includes an aluminum base plate that is closely attached to the bottom of the cavity and is electrically connected to the driving device, a light source fixing column that is connected and fixed on the upper end of the aluminum base plate, and several light source fixing columns that are evenly arranged on the side of the light source fixing column and connected to the aluminum base plate. Electrically connected aluminum-based strips, LED lamp beads evenly arranged on the aluminum-based strips, the number of LED lamp beads on each aluminum-based strip is 2 to 10.

Preferably, the light source fixing column is evenly provided with several sides, and each side is provided with an installation groove that is adapted to the aluminum base strip and embedded in the aluminum base strip, and the number of sides of the light source fixing column is 3 to 6.

Preferably, the aluminum base plate is provided with a gap through which the wire can pass at a position corresponding to the wire hole of the concave cavity.

Preferably, the upper end of the light-transmitting cover is provided with a heat dissipation port communicating with the outside.

Preferably, the radiator and the lamp holder are screwed and fixed, and the radiator and the lamp holder are integrally formed, and both are made of metal with thermal conductivity, and the metal is aluminum, copper or iron.

The LED light bulb of the utility model has a novel appearance design, and multiple heat dissipation measures are provided: the upper end of the light-transmitting cover is provided with a heat dissipation port, the interior of the radiator is set as a hollow structure, and the side of the radiator is provided with a first ventilation hole and a first ventilation slot , the second ventilation hole and the second ventilation groove, and the first heat dissipation fin and the second heat dissipation fin are also provided on the outer wall of the radiator. Under multiple measures, the heat dissipation efficiency of the LED bulb is very high, and the heat dissipation effect is ideal, avoiding the The large accumulation of heat effectively solves the heat dissipation problem of LED bulbs and prolongs the service life of LED bulbs.

Description of drawings

Fig. 1 is a side view of an embodiment of an LED light bulb with high heat dissipation efficiency of the present invention;

Fig. 2 is an exploded perspective view of the three-dimensional structure of an embodiment of an LED light bulb with high heat dissipation efficiency of the present invention;

Fig. 3 is one of the three-dimensional structural schematic diagrams of the radiator in an embodiment of an LED light bulb with high heat dissipation efficiency of the present invention;

FIG. 4 is the second schematic diagram of the three-dimensional structure of the radiator in an embodiment of an LED light bulb with high heat dissipation efficiency according to the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1 to Fig. 4, an embodiment of an LED light bulb with high heat dissipation efficiency of the present utility model is proposed, and a heat sink 100, a lamp holder 200, an LED light source structure 300, and a lamp holder 200 are connected and fixed sequentially from bottom to top. The light-transmitting cover 400 covering the upper end surface and covering the LED light source structure 300 also includes a driving device (not shown in the drawings) placed in the heat sink 100 and electrically connected to the LED light source structure 300 . The shapes of the light-transmitting cover 400 and the radiator 100 are set in the shape of a kerosene lamp, so that the whole lamp looks classical and exquisite, novel in appearance and highly ornamental. In addition, the upper end of the transparent cover 400 is provided with a heat dissipation port 401 communicating with the outside.

The radiator 100 is a hollow cylindrical hole, and the hollow cylindrical hole is divided into a lower cylinder 111 connected to each other, and an upper cylindrical hole 121 whose diameter is larger than that of the lower cylinder 111 . The driving device is adapted to the upper cylindrical hole 121 and placed in the upper cylindrical hole 121 .

The radiator 100 is divided into a lower end part 110 and an upper end part 120 connected as one. The lower end part 110 is a tower-shaped body, and a plurality of first ventilation holes 112 are evenly arranged vertically on the outer wall of the tower-shaped body, and each first ventilation hole 112 is longitudinally provided with There is a first ventilation groove 113, and a plurality of Y-shaped first heat dissipation fins 114 are extended outwardly from the outer wall of the tower-shaped body below the first ventilation hole 112. Communication hole 115; the upper end portion 120 is longitudinally evenly provided with several second ventilation holes 122 between the outer side wall and the upper end cylindrical hole 121, and the side wall of the upper end cylindrical hole 121 is longitudinally provided with a communication first ventilation hole 122 at a position corresponding to the second ventilation hole 122. The second ventilation hole 122 and the second ventilation slot 123 of the upper cylindrical hole 121 , and a plurality of Y-shaped second cooling fins 124 extending outward from the outer wall of the upper portion 120 . Wherein, the positions of the first ventilation holes 112 and the second ventilation holes 122 are set correspondingly, and the positions of the first ventilation slots 113 and the second ventilation slots 123 are set correspondingly, which is conducive to air convection in the longitudinal direction.

The LED light bulb also includes a bowl-shaped reflective cup 500 connected to the upper end surface of the lamp holder 200 and turned upside down. The upper end of the light-emitting cup is provided with a through hole 501 that is adapted to the LED light source structure 300 and surrounds the LED light source structure 300 to reflect light. The cup 500 passes through the LED light source structure 300 from top to bottom and is placed on the upper end surface of the lamp holder 200 . The outer surface of the reflective cup 500 is coated with a reflective layer, and the reflective cup 500 can reflect light to enhance light efficiency and improve light utilization.

A cavity column 201 with a concave cavity 202 extends upward from the center of the upper end surface of the lamp holder 200 . The bottom of the concave cavity 202 is provided with a wire hole 203 . The lower end of the photomask 400 is open to an annular locking groove 204 that fits and engages with each other.

The LED light source structure 300 includes an aluminum base plate 301 that is closely attached to the bottom of the concave cavity 202 and is electrically connected to the driving device, a light source fixing column 302 that is connected and fixed on the upper end of the aluminum base plate 301, and a number of light source fixing columns 302 that are evenly arranged on the side of the light source fixing column 302. The aluminum base plate 301 is electrically connected to the aluminum base strip 303 , and the LED lamp beads 304 are uniformly arranged on the aluminum base strip 303 , and the number of LED lamp beads 304 on each aluminum base strip 303 is 2 to 10. The light source fixing column 302 is uniformly provided with several sides, and each side is provided with an installation groove 305 adapted to the aluminum base strip 303 and embedded in the aluminum base strip 303. The number of sides of the light source fixing column 302 is 3 to 6. The aluminum base plate 301 is provided with a notch 306 at a position corresponding to the wire hole 203 of the concave cavity 202 through which the wire can pass.

The radiator 100 and the lamp holder 200 are screwed and fixed, and the radiator 100 and the lamp holder 200 are integrally formed, and are made of metal with thermal conductivity, and the metal is aluminum, copper or iron.

When the LED light bulb works normally, the LED lamp bead 304 and the driving device generate a large amount of heat, which can be dissipated through the following channels: first: the heat dissipation port 401 on the upper end of the light-transmitting cover 400 communicates with the external air and the air inside the light-transmitting cover 400 , the heat generated by the LED lamp bead 304 can be dissipated directly from the heat dissipation port 401; second: the heat of the LED lamp bead 304 is transmitted to the lamp holder 200 through the aluminum base strip 303, the aluminum base plate 301, and the light source fixing column 302. The lamp holder 200 has an integrated structure and is made of heat-conducting metal. The heat can quickly spread throughout the lamp holder 200 and part of the heat is directly emitted from the lamp holder 200 to the outside air; third: the lamp holder 200 is connected and fixed to the radiator 100 Together, and the heat sink 100 is also integrally formed and made of heat-conducting metal, the heat on the lamp holder 200 can be quickly and timely transferred to the heat sink 100 and spread throughout the entire heat sink 100. The heat generated by the driving device in the cylindrical hole 121 is also promptly and quickly spread throughout the entire radiator 100 and the entire lamp holder 200 and can be directly transferred to the outside air; structure, the heat generated by the driving device and the heat in the radiator 100 can be transferred to the outside through the hollow structure; fifth: the upper part 120 of the radiator 100 is provided with a second ventilation hole 122 communicating with the outside air, communicating with the second ventilation hole 122 and the second ventilation groove 123 of the upper cylindrical hole 121, so that the hot air in the upper cylindrical hole 121 circulates from the second ventilation hole 122 and the second ventilation groove 123 to the outside air, and the heat is quickly carried by the flow and convection of the air. Go, in addition, the Y-shaped second cooling fins 124 provided on the outer wall of the upper part 120 greatly increase the contact area with the outside air, further improving the heat dissipation efficiency of the upper part 120 of the radiator 100; sixth: heat dissipation The lower part 110 of the device 100 is provided with a first ventilation hole 112 and a first ventilation groove 113, so that the hot air in the hole of the lower cylinder 111 circulates into the outside air from the first ventilation hole 112 and the first ventilation groove 113, and the air is used to The flow and convection quickly take away the heat. At the same time, the lower part 110 is also provided with the second heat dissipation fin 124 which greatly increases the heat dissipation area, further improving the heat dissipation efficiency. Moreover, the positions of the first ventilation holes 112 and the second ventilation holes 122 are set correspondingly, and the positions of the second ventilation holes 122 and the second ventilation slots 123 are set correspondingly, so that the air can convect, speed up the air flow speed and improve the heat of the hot and cold air. exchange rate. To sum up, under multiple measures, the heat dissipation efficiency of LED bulbs is very high, and the heat dissipation effect is ideal, which avoids a large amount of heat accumulation, effectively solves the heat dissipation problem of LED bulbs, and prolongs the service life of LED bulbs.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. fields, are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. An LED light bulb with high heat dissipation efficiency, which is sequentially connected and fixed with a radiator, a lamp holder, an LED light source structure, and a light-transmitting cover connected to the upper end surface of the lamp holder and covering the LED light source structure from bottom to top , further comprising a drive device placed in the heat sink and electrically connected to the LED light source structure, characterized in that the heat sink is a hollow cylindrical hole, and the hollow cylindrical hole is divided into a lower cylindrical hole communicating with each other, An upper cylindrical hole whose diameter is larger than that of the lower cylindrical hole; the radiator is divided into a lower part and an upper part connected as a whole, the lower part is a tower-shaped body, and a number of first A ventilation hole, each of the first ventilation holes is longitudinally provided with a first ventilation groove, and a plurality of Y-shaped first cooling fins extend outward from the outer wall of the tower-shaped body below the first ventilation hole ; The upper part is longitudinally evenly provided with a number of second ventilation holes between the outer wall and the upper cylindrical hole, and the side wall of the upper cylindrical hole is longitudinally provided with the second ventilation hole at a position corresponding to the second ventilation hole. Two ventilation holes and the second ventilation groove of the upper cylindrical hole, and a plurality of Y-shaped second cooling fins extending outward from the outer side wall of the upper part. 2. The LED light bulb with high heat dissipation efficiency according to claim 1, wherein the driving device is adapted to the upper cylindrical hole and placed in the upper cylindrical hole, and the lower end of the radiator Part of the side wall is provided with a communicating hole communicating with the lower cylindrical hole. 3. The LED light bulb with high heat dissipation efficiency according to claim 1 or 2, characterized in that, the positions of the first ventilation hole and the second ventilation hole are set correspondingly, and the first ventilation slot and the position of the second ventilation hole The positions of the second ventilation slots are set correspondingly. 4. The LED light bulb with high heat dissipation efficiency according to claim 3, characterized in that, the LED light bulb also includes a bowl-shaped reflector connected to the upper end surface of the lamp holder and turned upside down, and the light-emitting The upper end of the cup is provided with a through hole adapted to the LED light source structure and enclosing the LED light source structure, and the outer surface of the reflective cup is coated with a reflective layer. 5. The LED light bulb with high heat dissipation efficiency according to claim 4, characterized in that, a cavity column with a concave cavity extends upward from the center of the upper end surface of the lamp holder, and the bottom of the cavity is provided with The wire hole, the lamp holder is provided with an annular locking groove at the position connected to the light-transmitting cover, which fits with the lower end opening of the light-transmitting cover and engages with each other. 6. An LED light bulb with high heat dissipation efficiency according to claim 5, characterized in that, the LED light source structure comprises an aluminum base plate, a connecting The light source fixing column fixed on the upper side of the aluminum base plate, a number of aluminum base slats evenly arranged on the side of the light source fixing column and electrically connected to the aluminum base plate, and evenly arranged on the aluminum base slats LED lamp beads, the number of said LED lamp beads on each of said aluminum-based strips is 2 to 10. 7. The LED light bulb with high heat dissipation efficiency according to claim 6, characterized in that, the light source fixing column is evenly provided with several sides, and each side is provided with a And the aluminum-based slats are embedded in the inner installation groove, and the number of sides of the light source fixing column is 3 to 6. 8 . The LED light bulb with high heat dissipation efficiency according to claim 7 , wherein the aluminum base plate is provided with a gap through which a wire can pass at a position corresponding to the wire hole of the concave cavity. 9 . 9 . The LED light bulb with high heat dissipation efficiency according to claim 8 , wherein the upper end of the transparent cover is provided with a heat dissipation port communicating with the outside. 10. The LED light bulb with high heat dissipation efficiency according to claim 9, wherein the radiator is screwed and fixed to the lamp holder, and the radiator and the lamp holder are integrally formed, and All are made of thermally conductive metal such as aluminum, copper or iron.

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