CN201751675U

CN201751675U - LED (light-emitting diode) bulb

Info

Publication number: CN201751675U
Application number: CN2010201651863U
Authority: CN
Inventors: 瞿红兵
Original assignee: HANGZHOU WEILIGUANG OPTO-ELECTRONICS Co Ltd
Current assignee: HANGZHOU WEILIGUANG OPTO-ELECTRONICS Co Ltd
Priority date: 2010-04-20
Filing date: 2010-04-20
Publication date: 2011-02-23
Anticipated expiration: 2020-04-20

Abstract

The utility model discloses an LED (light-emitting diode) bulb which is internally provided with a conical radiating column and is coated with radiating dope on the outer surface. The LED bulb includes a radiating bulb 1, an LED chip 2, a PCB (printed circuit board) 3, a base 4, a radiating column 5 and a radiating coating 6. The LED chip 2 is fixed on the PCB 3 and the radiating bulb 1 is sheathed outside the LED chip 2; the conical radiating column 5 is additionally arranged on the central position of the LED surface of the PCB 3 in the bulb; highly heat-conductive materials such as aluminum, copper and ceramics can be used as the material of the conical radiating column 5; in order to increase the radiating efficiency of the conical radiating column, the section of the conical radiating column can be manufactured into concave-convex shape so as to enlarge the radiating area; meanwhile, the radiating dope 6 is coated on the surface of the conical radiating column so as to externally radiate more heat through infrared rays. The bulb is a radiating bulb; therefore, a user can not sense the existence of the radiating column. A radiator behind the bulb can be shortened, and the length of the bulb can be increased accordingly, thus causing the LED bulb to have larger luminophor, wider radiating scope and smaller dark area in a region and enabling people to feel more comfortable.

Description

A kind of LED bulb

Affiliated technical field:

The utility model relates to a kind of structure of LED bulb, particularly a kind ofly includes the LED bulb that taper thermal column and outer surface are coated with heat loss through radiation coating.

Background technology:

LED becomes in the industrial circle to reaching the new lighting source that power saving and environmental requirement are done one's utmost to develop because characteristics such as luminous efficiency height, green non-pollution and long-life replace conventional bulb gradually at present.

With reference to figure 1, general on the market LED bulb is made up of heat radiation ball bubble 1, led chip 2, pcb board 3, base 4.Led chip 2 is solid brilliant on pcb board 3, outer cover heat radiation ball bubble 1, and pcb board 3 connects base 4, and the heat of lamp passes to base 4 by pcb board 3, is dispelled the heat by the radiator behind the base 4.Integral heat sink efficient is not good, damages for guaranteeing product Yin Wendu being not too high, usually base is strengthened, to increase heat dissipation capacity.On the other side, light-emitting area will reduce, and irradiation area also reduces thereupon, and the sensation comfort level of human body is variation thereupon also.Therefore, existing LED bulb can't be brought into play its maximum effectiveness, and improved space is still arranged.

Summary of the invention:

Technical problem to be solved in the utility model is to overcome the not good problem of thermal diffusivity of existing LED bulb, and a kind of LED bulb that taper thermal column and outer surface are coated with heat loss through radiation coating that includes is provided.

Led chip is solid brilliant on pcb board, outer cover is penetrated the hot-bulb bubble, the LED face center of pcb board in the ball bubble, increase the taper thermal column for increasing its radiating efficiency, concaveconvex shape is made in its cross section, to increase area of dissipation, also can be coated with heat loss through radiation coating simultaneously, so that more heat is outwards distributed by ultrared mode on its surface.

The beneficial effects of the utility model are, increase taper thermal column in the LED of PCB face, ball bubble, and material can be with the material of high heat conduction, and as aluminium, copper, pottery, perhaps other highly heat-conductive material allows more heat distribute by the front.The ball bubble is scattering ball bubble, thereby makes the user can't perceive the existence of thermal column.Can shorten the radiator at bulb rear portion, correspondingly increase the length of ball bubble, make that the illuminator of LED bulb is bigger, the scope of irradiation is bigger, the dark space in the zone still less, that gives the people feels more comfortable.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is traditional LED bulb figure.

Fig. 2 is the utility model cutaway view.

Fig. 3 is the utility model vertical view.

Reference numeral is as follows: 1, scattering ball bubble, 2, led chip, 3, pcb board, 4, base, 5, thermal column, 6, the heat loss through radiation coating.

The specific embodiment:

Referring to Fig. 2 to Fig. 3, be structure of the present utility model, described scattering ball bubble 1, led chip 2, pcb board 3, base 4, thermal column 5, the heat loss through radiation coating 6 of comprising.Led chip 2 is solid brilliant on pcb board 3, outer cover scattering ball bubble 1, the LED face center of pcb board 3 in ball bubble, increase taper thermal column 5, material can be with the material of high heat conduction, as aluminium, copper, pottery etc., for increasing its radiating efficiency, concaveconvex shape is made in its cross section, to increase area of dissipation, simultaneously be coated with heat loss through radiation coating 6, so that more heat is outwards distributed by ultrared mode on its surface.

Claims

1. LED bulb is characterized in that: the LED face center of pcb board in the ball bubble, and increase copper taper thermal column, concaveconvex shape is made in its cross section.

2. a kind of LED bulb according to claim 1 is characterized in that: taper thermal column surface is coated with heat loss through radiation coating.