CN202402969U

CN202402969U - LED (Light-Emitting Diode) bulb with high heat dispersion performance

Info

Publication number: CN202402969U
Application number: CN2011204471053U
Authority: CN
Inventors: 文波
Original assignee: GUANGZHOU JUJING ENERGY TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU JUJING ENERGY TECHNOLOGY Co Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-08-29
Anticipated expiration: 2021-11-02

Abstract

The utility model discloses an LED (Light-Emitting Diode) bulb with high heat dispersion performance. The LED bulb with high heat dispersion performance comprises a lamp head, a lamp holder fixed on the lamp head and a radiator arranged on the lamp holder, wherein the radiator is internally provided with a through cavity; a power source is placed in the cavity; a heat-conducting substrate is fixed at the upper surface of the radiator; multiple LEDs are arranged on the heat-conducting substrate; a light-transmitting bulb case hoods the LED and the heat-conducting substrate and is fixed on the radiator; and the radiator further comprises multiple radiating fins which are arranged radially; and multiple convex-concave structures used for adding radiating area are arranged on the surfaces of the radiating fins. The LED bulb with high heat dispersion performance, disclosed by the utility model, has the advantages of being high in heat dispersion efficiency and also greatly prolonging the service life of the LED bulb.

Description

A kind of LED bulb of high heat dispersion

[technical field]

The utility model relates to a kind of LED bulb, particularly relates to a kind of LED bulb of high heat dispersion.

[background technology]

In the prior art, the employed light source of lighting device mainly comprises incandescent lamp, fluorescent lamp and LED (light emitting diode) lamp.Wherein, Incandescent lamp belongs to the thermoluminescence body, and its electric energy that is consumed at work is mainly used in the heat filament element, uses it at high temperature luminous; Because this operation principle; The electric energy overwhelming majority that this light source consumed is converted into heat energy, has only the electric energy of few part to be converted into luminous energy, and photoelectric conversion rate is lower.Fluorescent lamp belongs to gas-discharge lamp; Also belong to the thermoluminescence body, on photoelectric conversion rate, improve, still than incandescent lamp; Its higher operating ambient temperature that need compare; Under cryogenic conditions, start difficulty, and the luminescent substance that charges in the fluorescent lamp is in case overflow when fluorescent tube breaks and can pollute environment, the people is penetrated damages.The common defects of the lighting device of these thermoluminescence bodies of incandescent lamp and fluorescent lamp is exactly that on-off effect speed is slow, light efficiency is low, the life-span is short.In recent years, LED uses in lighting apparatus as new light source technology gradually, and the led light source principle of luminosity does not belong to the thermoluminescence principle; LED is a kind of solid-state semiconductor devices, and it can directly be converted into light to electricity, and its caloric value is few; Belong to a kind of cold light source, energy conversion rate is high, and reaction speed is fast during switch; Require lower operating temperature during its work, too high operating temperature can be used its lost of life even burn.The led light source device in use, its light-emitting component and circuit board and driving power also can produce certain heat, need in time this heat to be distributed, and are in best operating temperature to keep the LED element, use can increase the service life, and improves light efficiency.All there is the difficult problem that radiating efficiency is not high, bulb service life is not long in present LED bulb, is the technical problem that industry technical staff must solve so improve the radiating efficiency of LED bulb.

[utility model content]

The technical problem that the utility model will solve provides a kind of LED bulb of the high heat dispersion that improves radiating efficiency, increases the service life.

The utility model is to solve above-mentioned technical problem through following technical proposals: a kind of LED bulb of high heat dispersion; Comprise lamp holder, be fixed on the lamp socket on the lamp holder, be arranged on the radiator on the lamp socket; In said radiator, be provided with the cavity of a perforation; In said cavity, be placed with a power supply, be fixed with heat-conducting substrate at the upper surface of said radiator, said heat-conducting substrate is provided with a plurality of LED; One printing opacity cell-shell covers said LED and heat-conducting substrate and is fixed on the said radiator; It is characterized in that said radiator also comprises a plurality of radial radiating fins, be provided with a plurality of concaveconvex structures that are used to increase area of dissipation on the surface of said radiating fin.

The beneficial effect of the utility model is: because the radiator of the utility model also comprises a plurality of radial radiating fins; Be provided with a plurality of concaveconvex structures that are used to increase area of dissipation on the surface of radiating fin; Design can increase the contact area of radiating fin and air greatly like this; Than traditional radiator above area of dissipation that doubles at least, the utlity model has the high advantage of radiating efficiency, also prolonged the service life of LED bulb simultaneously greatly.

Preferably, said concaveconvex structure indentation.

Preferably, said LED is an adopting surface mounted LED.

Preferably, said LED is a low-power LED.

[description of drawings]

Below in conjunction with accompanying drawing the utility model is explained further details.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the decomposition texture sketch map of the utility model shown in Figure 1.

Fig. 3 is the perspective view of the utility model radiator.

Fig. 4 is the structure for amplifying sketch map of A part shown in Figure 3.

[specific embodiment]

Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.

Shown in accompanying drawing 1-4, the utility model comprises lamp holder 10, is fixed on the lamp socket 20 on the lamp holder 10; Be arranged on the radiator 30 on the lamp socket 20; Said radiator 30 is fixed on through screw 37 in the fixing hole 24 of said lamp socket 20, in said radiator 30, is provided with the cavity 32 of a perforation, in said cavity 32, is placed with a power supply 38; Upper surface at said radiator 30 is fixed with heat-conducting substrate 40; Said heat-conducting substrate 40 is provided with a plurality of LED42, and said heat-conducting substrate 40 is through screw 37 ' be fixed on the upper surface of said radiator 30, and a printing opacity cell-shell 50 covers said LED42 and heat-conducting substrate 40 and is fixed on the upper surface of said radiator 30; Said radiator 30 also comprises a plurality of radial radiating fins 33; Be provided with a plurality of concaveconvex structures 35 that are used to increase area of dissipation on the surface of said radiating fin 33, promptly be provided with rough surface, can increase the area that radiating fin 33 contacts with air like this on the surface of said radiating fin 33.Said concaveconvex structure 35 indentations, i.e. the cross section indentation of concaveconvex structure 35 is like Fig. 3, shown in 4.In the upper end of said radiator 30 retainer ring 46 is installed, said cell-shell 50 is installed on the said retainer ring 46.The inner surface of said retainer ring 46 is provided with an internal thread, the top of said radiator 30 be provided with one with the external screw thread 34 of said internal thread coupling, said retainer ring 46 is fixed on the said radiator 30 through the external screw thread 34 that is complementary with it.Said LED42 is an adopting surface mounted LED.Said LED also can select great power LED for use.Said lamp holder 10 is fixed on through being threaded on the said lamp socket 20.

The above in the spiritual category that does not break away from the utility model creation, is familiar with the protection domain that this technological various simple covert and modification that those skilled in the art did still belongs to the utility model all with the convenient the utility model of explaining.

Claims

1. the LED bulb of a high heat dispersion comprises lamp holder, is fixed on the lamp socket on the lamp holder; Be arranged on the radiator on the lamp socket; In said radiator, be provided with the cavity that connects, in said cavity, be placed with a power supply, be fixed with heat-conducting substrate at the upper surface of said radiator; Said heat-conducting substrate is provided with a plurality of LED; One printing opacity cell-shell covers said LED and heat-conducting substrate and is fixed on the said radiator, it is characterized in that: said radiator also comprises a plurality of radial radiating fins, is provided with a plurality of concaveconvex structures that are used to increase area of dissipation on the surface of said radiating fin.

2. according to the LED bulb of the said high heat dispersion of claim 1, it is characterized in that: said concaveconvex structure indentation.

3. according to the LED bulb of the said high heat dispersion of claim 2, it is characterized in that: said LED is an adopting surface mounted LED.

4. according to the LED bulb of the said high heat dispersion of claim 2, it is characterized in that: said LED is a low-power LED.