CN201306632Y

CN201306632Y - A LED lamp and heat radiator thereof

Info

Publication number: CN201306632Y
Application number: CNU2008202124738U
Authority: CN
Inventors: 李志江; 刘平; 刘少华; 杨波勇
Original assignee: SHENZHEN MASON TECHNOLOGIES Co Ltd
Current assignee: SHENZHEN MASON TECHNOLOGIES Co Ltd
Priority date: 2008-10-21
Filing date: 2008-10-21
Publication date: 2009-09-09
Anticipated expiration: 2018-10-21

Abstract

The utility model discloses a LED lamp and heat radiator thereof; the LED lamp comprises a LED, a heat radiator for dissipating heat of the LED and a spherical bulb shell covered on the LED; the heat radiator comprises a base and a plurality of fins; the base of the heat radiator is a hollow column body in central axis direction; the fins are radially extended from the peripheral outer wall of the column base. The heat radiator comprises a base and a plurality of fins; the base of the heat radiator is a hollow column body in central axis direction; the fins are radially extended from the peripheral outer wall of the column base. The LED lamp and heat radiator thereof can effectively guarantee the lighting quality and service life of LED lamp.

Description

LED lamp and radiator thereof

Technical field

The utility model relates to a kind of lighting device, particularly relates to LED (LED, Light-emitting Diode) lamp and radiator thereof.

Background technology

LED can be used as a kind of light source of high benefit.Because little, the low power consumption and other advantages of volume, LED is widely used in fields such as automobile, traffic lights indication, screen display even illumination.During as illuminations, the LED lamp is compared its power saving rate with incandescent lamp, fluorescent lamp and can be reached more than 70%.

Along with the development of application demand, need more and more high-capacity LED lamps.But as characteristics of solid light source itself, the heat that high-power more LED sends when work is also high more.Can these heats that send in time derive or distribute, and becomes the key factor that influences LED luminescent quality and life-span.For effectively dispelling the heat the instrument of heat radiation when prior art provides a kind of aluminum extruded formula radiator to be used as LED work.Described radiator roughly is a square structure, comprises plate-shaped base and at the vertically and horizontally arranged a plurality of fins of pedestal one side.The another side of described pedestal is then installed LED.The high heat that radiator by fin structure comes to produce when LED worked is evacuated.

The inventor finds through long-term practice, when using more high-power LED or adopt a plurality of LED to work, the radiator that needs larger volume is led light source work, but when requiring radiator to be the certain volume restriction, its heat dispersion is not good enough, be that above-mentioned prior art radiator is failed fine characteristics in conjunction with led light source to satisfy the application need of led light source, be difficult to guarantee luminescent quality and the life-span of LED.

The utility model content

Be difficult to guarantee the luminescent quality of LED and the technological deficiency in life-span owing to radiating efficiency is not high for solving prior art LED lamp, the utility model provides a kind of and dispels the heat well, effectively guarantees the LED lamp and the radiator thereof in LED luminescent quality and life-span.

A kind of LED lamp is provided, comprise LED, be the radiator of described LED heat radiation and the spherical cell-shell that shrouds described LED, described radiator comprises pedestal and a plurality of fin, the pedestal of described radiator is the column of central axis direction hollow, and described fin radially extends from the outer wall all around of described column pedestal.

A kind of radiator also is provided, comprises pedestal and a plurality of fin, the pedestal of described radiator is the column of central axis direction hollow, and described fin radially extends from the outer wall all around of described column pedestal.

The beneficial effects of the utility model are: be different from the LED lamp that prior art adopts the square structure radiator, the utility model especially at the led light source small size, in the characteristics of special angle output light, the radiator of cylindrical structure is proposed, promptly be not limited to fin is set, but around radiator base, fin be set at an end of radiator base.Like this, the heat that produces during LED work is transferred to radiator base immediately, and pedestal promptly is the center with LED, and heat is exhaled from fin all around.From hot transmission route, heat is dispersed rapidly from all directions from described radiator mediad, reaches the technique effect of big area of dissipation under the small size situation, so radiating efficiency obviously improves the luminescent quality and the life-span of assurance LED lamp.

Description of drawings

Fig. 1 is the assembling schematic diagram of the utility model LED lamp first embodiment;

Fig. 2 is the schematic perspective view of radiator among Fig. 1;

Fig. 3 is the schematic cross-section of radiator among Fig. 1;

Fig. 4 is the schematic perspective view of baffle vane among Fig. 1;

Fig. 5 is the schematic perspective view of LED and substrate in combination among Fig. 1;

Fig. 6 is the schematic perspective view of cell-shell among Fig. 1;

Fig. 7 is the schematic perspective view of base among Fig. 1;

Fig. 8 makes the schematic perspective view of lamp holder among Fig. 1;

Fig. 9 is the schematic perspective view after the assembling of LED lamp among Fig. 1;

Figure 10 is the side schematic view after the assembling of LED lamp among Fig. 1;

Figure 11 is the schematic perspective view of the lamp holder in the utility model LED lamp second embodiment;

Figure 12 is the side schematic view of the utility model LED lamp second embodiment.

The specific embodiment

The practice of inventor of the present utility model through for a long time led light source being combined with radiator, export the characteristics of light at the led light source small size, at special angle, invent out the radiator of cylindrical structure, promptly be not limited to fin is set, but outer wall is provided with fin around radiator base at an end of radiator base.LED is arranged on the radiator the inside, leaves a blank so that light penetrates in the direction of LED output light simultaneously, to obtain bigger area of dissipation under the small size situation.Below in conjunction with drawings and embodiments the utility model is further specified.

Consulting Fig. 1, is the assembling schematic diagram of the utility model LED lamp first embodiment.Described LED lamp comprises stacked successively lamp holder 110, base 120, control panel assembly 130, screw 140, radiator 150, baffle vane 160, LED and board unit 170 and cell-shell 190.

Consult Fig. 2 together, described radiator 150 is aluminum extruded formula structures, adopts the aluminium of 99% purity to make, and comprises pedestal 151 and a plurality of fin 152.Described pedestal 151 is columns of central axis direction hollow, fits with above-mentioned baffle vane 160 in the surface 1511 of one end, and the inwall of its hollow space 1513 comprises holddown groove 1512.

Described fin 152 is parallel to the central shaft of described pedestal 151, and all from described column pedestal 151 around outer wall radially extend.Consult Fig. 3 together, described fin 152 is thicker near the part of pedestal 151, and in the radial direction attenuation gradually away from pedestal 151.

In the present embodiment, described fin 152 is small-sized fin, and its quantity is between the 30-32 sheet, and in other embodiments, described fin can suitably be done greatly, and its radiating effect was preferable between quantity then was made as 15 to 17.

See that from the side the bottom surface of described fin 152 upwarps the adaptive described base 120 of the cambered surface of formation toward end.

Consult Fig. 4, surround described LED 172 around the described baffle vane 160, the light that LED 172 is sent reflects away, and effectively improves light utilization efficiency.Described baffle vane 160 comprises the chassis of central opening, and the chassis hollow space is used to accommodate electric wire, also is beneficial to the cross-ventilation in radiator 150 pedestals 151, makes things convenient for heat to distribute; The bottom surface of chassis peripheral part fits in the surface 1511 of described radiator 150 pedestals 150.Described baffle vane 160 chassis have perforation 161.

Consult Fig. 5, described LED and board unit 170 comprise substrate 171 and are fixed on a plurality of LED 172 on substrate 171 1 surfaces.The fit chassis surface of above-mentioned baffle vane 160 of the bottom surface of described substrate 171.The periphery of described substrate 171 also comprises screw hole 173.

Consult Fig. 6, described cell-shell 190 is milky spherical glass, and the cell-shell inner surface scribbles the irreflexive material of one deck, the effect of this glass cell-shell is to allow the interior LED spot light of cell-shell become the sphere light source, effectively handle the glare problem of LED, to avoid the dazzling light of dazzling, light transmission is good simultaneously.Cell-shell 190 bottoms have opening 191, and opening is less than above-mentioned baffle vane 160, and employing glue 180 (shown in Figure 1) is bonded in the described baffle vane 160.

Consult Fig. 7, described base 120 is used to accommodate control panel assembly 130, and comprises screw hole post 121, during assembling, utilizes the holddown groove 1512 on screw hole 173 on LED and the board unit 170, the perforation 161 on the baffle vane 160, radiator 150 pedestals 150.Adopt screw 140 grades with above-mentioned LED and board unit 170, baffle vane 160 and radiator 150 lockings.

Consult Fig. 8, described lamp holder 110 is the universal sockets that can patch the common bulb lamp socket, has external screw thread and interior rib-loop.Described common bulb can be an incandescent light bulb.Cooperate the interior rib-loop of lamp holder 110, the outer rib-loop of above-mentioned base 120 bottoms can screw in described lamp holder 110, to make up described base 120 and lamp holder 110.

During assembling, described base 120 fixing described control panel assemblies 130, adopt screw 140 grades to connect described base 120, radiator 150, baffle vane 160, LED and board unit 170, the effect of baffle vane here is to be connected described radiator 150 and described cell-shell 190.The input of described control panel assembly 130 connects the electrode of described lamp holder 110, and output meets described LED 172 by the hollow space 1513 of radiator 150 pedestals 150.Be assembled at last as Fig. 9 and LED lamp shown in Figure 10.

In sum, be different from the LED lamp that prior art adopts the square structure radiator, the utility model especially at the led light source small size, in the characteristics of special angle output light, the radiator 150 of cylindrical structure is proposed, promptly be not limited to fin is set, but around radiator 150 pedestals 151, fin 152 be set in a side of radiator 150 pedestals 151.Like this, the heat that produces during LED work is transferred to radiator 150 pedestals 151 by substrate 171 immediately, and pedestal 151 is the center with LED 172 promptly, and heat is exhaled from fin 152 all around.From hot transmission route, except leaving the space that LED emits beam for, entire radiator 150 is the cylinder of the deep trouth of outer wall arrangement all around, heat is dispersed rapidly from all directions from described cylinder mediad, reach the technique effect that to obtain bigger area of dissipation under the small size situation, so radiating efficiency improves obviously.

Consult Figure 11 and 12, the lamp holder of the utility model LED lamp also can adopt the buckle form, and promptly the outer wall at lamp holder 110 ' is provided with outstanding buckle 112 ', and electrode 111 ' then is arranged on lamp holder 110 ' bottom fully.The LED lamp of this structure can be fit to other to be used, and makes that the range of application of the utility model LED lamp is wider.

In addition, the radiator 150 of present embodiment and substrate 171 can adopt the aluminium of 99% purity to make, and prove through repetition test, for undersized fin, the fin 152 of 30 to 34 quantity can reach higher radiating effect, has higher quality and long service life when guaranteeing the work of the utility model LED lamp.

And the lamp holder 110 of this LED lamp embodiment can be a universal socket, is suitable for present most LED lamp plug, and is easy to use; Can also be the lamp holder shown in 11, be suitable for other field.

In more embodiments, can adopt the tin material as between described substrate 171 and radiator 150 pedestals 151 surfaces 1511 and the heat-conduction medium between LED 172 and the substrate 171, its preferable selection can be solid-state tin (being tin bar) or liquid tin or paste tin (being tin cream) or other then material that is equal to etc.In addition, said base 151 and substrate 171 can adopt same metal material or different metal material to constitute.And this metal material is gold, silver, copper, aluminium or its alloy formation.

Need to prove, the core component of the utility model LED lamp comprises LED, radiator for described LED heat radiation, and the spherical cell-shell that shrouds described LED, described radiator comprises pedestal and a plurality of fin, the pedestal of described radiator is the column of central axis direction hollow, described fin radially extends from the outer wall all around of described column pedestal, as long as possess said structure, promptly constitute complete embodiment, because such embodiment is different from the LED lamp that prior art adopts the square structure radiator, fin promptly is set around radiator base, the heat that LED is produced exhales from fin all around, reach the technique effect that to obtain bigger area of dissipation under the small size situation, therefore, can improve radiating efficiency equally, guarantee the luminescent quality and the life-span of LED lamp.

In like manner, have the radiator of said structure, promptly radiator comprises pedestal and a plurality of fin, and the pedestal of described radiator is the column of central axis direction hollow, and described fin radially extends from the outer wall all around of described column pedestal.Such radiator also constitutes complete embodiment, and also is the part of the utility model design, belongs to same inventive concept.

Be noted that also in other embodiments, the pedestal of described radiator is not limited to cylindrical structure, also is not limited to hollow structure; Described LED also can directly be fixed on the radiator, does not need substrate; Described cell-shell, base etc. also can adopt any suitable shape, or directly omit; Described lamp holder also is not limited to the holder structure of incandescent light bulb, but can adopt any suitable holder structure; Described radiator or substrate are not limited to adopt aluminum to make, and can adopt other suitable metal materials that comprise copper to make.

More than a kind of LED lamp provided by the utility model and radiator thereof are described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1, a kind of LED lamp, comprise LED, be the radiator of described LED heat radiation and the spherical cell-shell that shrouds described LED, described radiator comprises pedestal and a plurality of fin, it is characterized in that: the pedestal of described radiator is the column of central axis direction hollow, and described fin radially extends from the outer wall all around of described column pedestal.

2, LED lamp according to claim 1 is characterized in that: described fin is thicker near the part of pedestal, away from the direction attenuation gradually of pedestal.

3, LED lamp according to claim 1, it is characterized in that: further comprise the described LED of surface bears substrate, be engaged on the baffle vane between described cell-shell and the radiator, described baffle vane comprises the chassis of central opening, described undersurface of bottom disc fits in described radiator one end surfaces, the fit bottom surface of described substrate of described chassis surface, and then described LED is fixed on the described radiator.

4, according to each described LED lamp of claim 1 to 3, it is characterized in that: described cell-shell is the opal glass cell-shell, and its inner surface scribbles the diffuse-reflective material of one deck high transmission rate.

5, according to each described LED lamp of claim 1 to 3, it is characterized in that: further comprise the lamp holder of fixing described pedestal, described lamp holder is to have externally threaded universal socket.

6, according to each described LED lamp of claim 1 to 3, it is characterized in that: further comprise the lamp holder of fixing described pedestal, described lamp holder is the universal socket that outer wall has outstanding buckle.

7, according to each described LED lamp of claim 1 to 3, it is characterized in that: described radiator is aluminum extruded formula structure.

8, a kind of radiator comprises pedestal and a plurality of fin, it is characterized in that: the pedestal of described radiator is the column of central axis direction hollow, and described fin radially extends from the outer wall all around of described column pedestal.

9, radiator according to claim 8 is characterized in that: described fin is thicker near the part of pedestal, and away from the part attenuation gradually of pedestal, its quantity is between 30 to 34.