CN101660679B - High-power LED bulb - Google Patents

Abstract

A high-power LED bulb comprises a lamp holder and a peripheral heat radiation body which is connected with the lamp holder in an installing mode, wherein a lamp cover is arranged on the peripheral heat radiation body, LED lamps are arranged on the inner bottom surface of the peripheral heat radiation body through an aluminum substrate and are arranged on the aluminum substrate, the LED lamps correspond to the aluminum substrate one by one, lenses which correspond to the LED lamps one by one are covered on the LED lamps, and through holes which are matched with the lenses in size are formed in the lamp cover. The LED lamp is characterized in that a cylindrical central radiator is arranged in the peripheral radiator, the aluminum substrate and the LED lamp penetrate through the central radiator and are arranged at the bottom in the peripheral radiator, a through hole for inserting the aluminum substrate and the LED lamp or a through groove with a good arc-shaped cross section is formed in the central radiator, a blind hole or a first blind groove with a good arc-shaped cross section is formed in the central radiator, and the aluminum substrate with the LED lamp is arranged in the first blind groove or the blind hole. The LED lamp has the advantages of reasonable structural layout, strong heat dissipation capability, capability of mounting a plurality of LED lamps, high bulb power, high brightness and low processing cost.

Description

A high-power LED bulb

technical field

The invention relates to an LED light bulb, in particular to a high-power LED light bulb.

Background technique

Compared with traditional incandescent lamps or fluorescent lamps, LED lamps have the advantages of long life, low power consumption, energy saving and environmental protection. LED lamps have been used more and more widely as lighting bulbs. In the prior art, there is usually only one heat sink in the LED light bulb, and the LED and the lens are concentrated in the heat sink. The space of the heat sink is not large, and the heat dissipation is poor. Therefore, the overall power of the light bulb is not high, and high brightness cannot be obtained. Such as conventional bulbs of 150WPAR38 and 300WPAR56, the brightness of existing LED bulbs can only reach about half of them, and they cannot replace them. There are generally two production processes for the existing LED light bulb radiators, one is aluminum alloy die-casting, and the other is aluminum alloy extrusion and turning. The radiator processed by the aluminum alloy die-casting process has a small heat dissipation area and low heat dissipation efficiency; the radiator processed by aluminum alloy after extrusion has a large heat dissipation area, but the contact area between the radiator processed in this way and the aluminum substrate is small, and the heat cannot be passed smoothly. The heat transfer efficiency is poor from the aluminum substrate to the radiator, and the turning process is expensive.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-power LED light bulb with high power, strong heat dissipation and low processing cost.

In order to solve the above technical problems, the present invention takes the following technical solutions:

A high-power LED light bulb, including a lamp base and a peripheral radiator installed and connected to the lamp holder, a lamp cover is installed on the peripheral radiator, and an LED lamp is installed on the bottom surface of the peripheral radiator through an aluminum substrate. The LED lamp is installed on the aluminum substrate and There is a one-to-one correspondence with the aluminum substrate, and there is a corresponding lens on the cover of the LED lamp. There is a through hole matching the size of the lens on the lamp cover. Pass through the central cooling body and install in the peripheral cooling body. A through hole for passing through the aluminum substrate and the LED lamp or a through groove with a curved cross section is opened on the central radiator.

Further, a blind hole or a first blind groove with a curved cross-section is provided on the peripheral wall of the central heat sink, and an aluminum substrate with an LED lamp is installed in the first blind groove or blind hole. A through hole is opened at the center of the central heat sink, and a second blind groove with an arc-shaped cross section is arranged around the through hole. A central aluminum substrate is installed in the second blind groove, and a cover is installed on the central aluminum substrate. A LED lamp corresponding to the lens. The central cooling body is provided with cooling fins which are beneficial to heat dissipation.

A cylindrical base for installing an aluminum substrate is provided on the inner bottom surface of the peripheral heat dissipation body containing the central heat dissipation body. The bottom of the peripheral cooling body is provided with a cylindrical protrusion which is coaxial with the through hole on the central cooling body and plays a role of heat transfer. The protrusion is in contact with the central aluminum substrate arranged in the central cooling body.

The peripheral cooling body and the lamp cap are detachably threaded or fixed by screws, and the electrical cavity between the peripheral cooling body and the lamp cap is equipped with a driving circuit. The bottom surface of the peripheral cooling body is provided with ventilation holes for air circulation, and the lamp cover attached to the peripheral cooling body is provided with cooling holes for cooling.

The structure and layout of the invention is reasonable, and a central heat sink is added on the basis of the original heat sink. The center heat sink dissipates most of the heat of the bulb, which greatly enhances the heat dissipation of the light bulb and makes the heat dissipation effect of the light bulb better, which is different from the existing ones. Compared with LED light bulbs, the power of the light bulbs can be effectively improved, and the brightness of the light bulbs is higher. Due to the good heat dissipation effect of the heat sink, compared with the existing LED light bulbs, under the same heat, the weight of the required heat sink is greatly increased. In addition, the present invention utilizes the die-casting aluminum alloy process to process the cooling body, which reduces the turning processing cost and lowers the manufacturing cost.

Description of drawings

Accompanying drawing 1 is a schematic diagram of the assembled structure of the present invention; accompanying drawing 2 is a schematic structural diagram of the disassembled state of the present invention.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

As shown in accompanying drawings 1 and 2, a high-power LED light bulb includes a lamp cap 1 and a peripheral radiator 2 installed and connected to the lamp cap 1. The peripheral radiator 2 is equipped with a lamp cover 3, and the inner bottom surface of the peripheral radiator 2 passes through an aluminum The substrate 4 is equipped with an LED lamp 5, which is installed on the aluminum substrate 4 and corresponds to the aluminum substrate 4 one by one. The LED lamp 5 is covered with a corresponding lens 6, and the lamp cover 3 is provided with a lens 6 in size. The matching through hole 7 is equipped with a cylindrical central cooling body 8 in the peripheral cooling body 2, and the inner bottom surface of the peripheral cooling body 2 is provided with a cylindrical base 14 for installing an aluminum substrate. And the through hole or cross section of the LED lamp is an arc-shaped through groove 9, and the aluminum substrate with the LED lamp passes through the through hole or through groove 9 on the central radiator 8 and is installed on the base 14 of the inner bottom surface of the peripheral radiator 2 superior. The central cooling body 8 is provided with a blind hole or a first blind slot 10 with an arc-shaped cross section. An aluminum substrate with LED lamps is housed in the blind hole or the first blind slot 10, and each LED lamp is covered with a A corresponding lens 6, in order to further improve the power of the bulb, has a through hole 11 at the central position of the central radiator 8, and is provided with a second blind groove 12 with a good arc shape in cross section around the through hole 11, and the second blind groove 12 is arranged around the through hole 11. A central aluminum base plate 13 is installed in the groove 12, and an LED lamp with a corresponding lens 6 is housed on the central aluminum base plate 13. In order to make the heat dissipation of the central heat sink better, a heat sink 14 is provided on the central heat sink 8. . On the inner bottom surface of the peripheral cooling body 2, there is a cylindrical protrusion 16 coaxial with the through hole 11 of the central cooling body 8, which plays a role in heat transfer. 13 in contact with each other, when the heat of the central radiator 8 is far greater than the heat of the peripheral radiator 2, the heat generated by the LED lamp installed in the second blind groove 12 is transmitted to the ledge 16 through the central aluminum substrate 13, and the ledge 16 transfers the heat to the peripheral heat sink 2 for heat dissipation; on the contrary, when the heat on the peripheral heat sink 2 is relatively large and cannot be discharged in time, the heat on the peripheral heat sink 2 is transferred to the central heat sink 2 through the protrusion 16 for further cooling. Heat dissipation effectively maintains the heat dissipation of the entire bulb, prolongs the service life of the bulb, and significantly increases the power of the LED bulb. In order to facilitate loading and unloading, the peripheral heat sink 2 and the lamp cap 1 are detachably threaded or fixed by screws, and a drive circuit 17 is installed in the electrical cavity between the peripheral heat sink 2 and the lamp cap 1, and the inner bottom surface of the peripheral heat sink 2 There are ventilation holes 18 which are conducive to air circulation, and the heat dissipation holes 19 which are convenient for heat dissipation are arranged on the lamp cover.

The present invention adds a central heat sink on the basis of the original peripheral heat sink, fully utilizes the space of the peripheral heat sink, improves heat dissipation performance, and makes the power of the LED light bulb of the present invention far greater than that of the existing LED light bulb. The existing PAR30 LED light bulb can withstand a power of 7-17W, and the maximum power it can withstand is only 17W. If it is higher, it will be damaged due to insufficient heat dissipation. However, the LED bulb of the same type in the present invention can withstand a power of 22W. Power, the existing model is the LED bulb of PAR38 can bear the power of 12～27W, and the maximum power that can bear is 27W, and the LED bulb of the same type of the present invention can bear the power of 37W at most, and the existing model is PAR56 The LED light bulb can withstand a power of 18-36W, and the maximum power it can withstand is 36W, while the LED light bulb of the present invention can withstand a maximum power of 54W. The larger the volume of the light bulb, the more obvious the power increase. It can be seen from the above that after adopting the LED light bulb with the structure of the present invention, the power of the same type of light bulb has been significantly improved and improved compared with the existing ones, and the brightness brought has been significantly improved compared with the existing LED light bulbs. , In some places that require high brightness, the existing LED light bulbs cannot replace traditional light bulbs, but the LED light bulbs of the present invention can be used instead of traditional light bulbs to achieve the required brightness, effectively save power and reduce costs. In addition, since the LED light bulb of the present invention has better heat dissipation compared with the existing LED light bulbs, the weight of the heat sink required by the present invention is greatly reduced under the condition of the same heat, so that the weight of the light bulb is comparable to that of the existing ones. Relatively light, also saved production cost, such as the LED light bulb of the present invention model is PAR38 power and is 37W, and weight is about 0.7KG, and existing model is that the LED light bulb weight of 27W of PAR38 power is then about 0.8KG, can see Find out, the present invention is in LED light bulb of the same type, not only power has been greatly improved, and the weight of whole bulb is also lighter.

The above-described embodiment is one of the preferred implementations of the present invention. In the above-mentioned embodiment, the bases in the peripheral cooling body are set to four, the first blind slots on the central cooling body are set to four, and the first blind slots on the central cooling body are set to four. The second blind slot is set to four, which is not a limitation. In actual production, it can be set according to actual needs. The base in the peripheral cooling body can also be two, three, five or six. Similarly, the central heat dissipation The number of the first blind groove and the second blind groove on the body is one, two, three, five or six, seven, and any obvious replacement is all within the premise of not departing from the inventive concept of the present invention. within the protection scope of the present invention.

Claims (2)

1. A high-power LED light bulb, comprising a lamp cap (1) and a peripheral cooling body (2) installed and connected to the lamp cap, a lamp cover (3) is mounted on the peripheral cooling body, and the bottom surface of the peripheral cooling body passes through the first aluminum substrate ( 4) A first LED lamp (5) is installed, the first LED lamp is installed on the first aluminum substrate and corresponds to the first aluminum substrate one by one, and the first LED lamp is covered with a one-to-one corresponding first lens (6 ), it is characterized in that: a cylindrical central heat sink (8) is housed in the peripheral heat sink, the first aluminum substrate and the first LED lamp pass through the center heat sink and are installed in the peripheral heat sink, and the center heat sink is provided with holes for interspersed The first aluminum substrate and the first LED lamp have a through hole or a through groove (9) with a curved cross-section; The central cooling body is provided with a blind hole or a first blind groove (10) with a curved cross section, and a second aluminum substrate is installed in the blind hole or the first blind groove, and a cover is mounted on the second aluminum substrate. The second LED lamp corresponding to the second lens has a through hole (11) in the center of the central cooling body, and a second blind groove (12) with a curved cross section is arranged around the through hole. A central aluminum base plate (13) is installed in the groove, and a third LED lamp with a corresponding third lens is mounted on the central aluminum base plate. The through hole (7) that the three lenses match; The bottom surface of the peripheral cooling body is provided with a cylindrical protrusion (16) which is coaxial with the through hole on the central cooling body and plays a role of heat transfer. The protrusion is in contact with the central aluminum substrate arranged in the central cooling body. 2. The high-power LED light bulb according to claim 1, characterized in that: the inner bottom surface of the peripheral cooling body is provided with a cylindrical base (15) for installing the first aluminum substrate.

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