CN201779479U

CN201779479U - LED lighting bulb

Info

Publication number: CN201779479U
Application number: CN2010202464934U
Authority: CN
Inventors: 黄景温
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-03-30
Anticipated expiration: 2020-07-01
Also published as: WO2012000225A1

Abstract

An LED lighting bulb comprises a standard joint, a heat dissipation device, an LED luminous body and a lampshade covering the LED luminous body, wherein the heat dissipation device is arranged behind the lampshade, the LED luminous body is arranged on the heat dissipation device, fins are arranged on the periphery of the heat dissipation device, a ventilation cavity is formed between every two adjacent fins, a bottom shell covering the heat dissipation device from the rear side is arranged outside each fin, a ventilation hole corresponding to the ventilation cavity of the heat dissipation device is formed in the rear side of the bottom shell, and the standard joint is fixedly connected with the tail end of the bottom shell; the bottom shell can isolate the heat absorbed by the heat dissipation device when the bulb emits light, so that hands are not scalded outside the lamp, the lamp is convenient for an operator to take and use, and in work, air can flow through a ventilation channel formed by the ventilation cavity and the ventilation holes to take away the heat on the fins of the heat dissipation device, so that a good heat dissipation effect is achieved; the utility model discloses the appearance is pleasing to the eye and the radiating effect is good to can prevent the overheated and danger that cause of bulb shell, be one kind and have innovation and market prospect's LED lighting bulb.

Description

A kind of LED lighting bulb

Technical field

The utility model relates to a kind of lighting bulb, especially a kind of LED lighting bulb.

Background technology

Compare traditional illuminating lamp, the lighting of LED formula has advantages such as energy saving, luminous efficiency height and volume are little, more and more welcome in market at present, universal scope is also more and more wider, and demand along with the user, the LED product that the former illuminating lamp structure of a series of replacements also occurred for example substitutes the LED fluorescent tube of conventional fluorescent pipe, the LED lighting bulb of alternative conventional incandescent etc.; LED lighting bulb wherein, mainly form by LED, the lampshade that covers LED and a modular joint, and consider the characteristic that the LED caloric value is big, can be equipped with the fin heat abstractor of metal at the LED rear portion, heat abstractor is exposed at the bulb outside outward, can increase the area that contacts with air, when the LED lighting bulb is worked, the heat abstractor ambient air flows and can take away heat, the heat that when the LED lighting bulb is worked, is produced like this, just can pass to heat abstractor, and discharge, reach radiating effect by the blade of heat abstractor; Yet the LED bulb structure that this heat abstractor exposes, bulb outside, especially heat abstractor place can be very boiling hot when work, and the operator is easy to be scalded if need operate bulb, is unfavorable for operation and use.

Summary of the invention

At the problems referred to above, the utility model provides a kind of and can not scald one's hand, and has the LED lighting bulb of better heat dissipation effect.

The utility model is that the technical scheme that its technical problem of solution is adopted is:

A kind of LED lighting bulb, comprise modular connection, heat abstractor, LED illuminator, and cover the lampshade of LED illuminator, heat abstractor is arranged at the lampshade rear, and the LED illuminator is installed on the heat abstractor, and described heat abstractor periphery row is provided with fin, form vented cavity between the adjacent fin, described fin is provided with the drain pan that envelopes heat abstractor from the rear outward, and the drain pan rear side is provided with the air vent corresponding with the vented cavity position of heat abstractor, and described modular connection is fixedlyed connected with the drain pan tail end.

The beneficial effects of the utility model are: the utility model is coated with drain pan in the heat abstractor outside, the heat that heat abstractor absorbed when drain pan was can be with bulb luminous is kept apart, just can not feel hot in the outside of lamp like this, being convenient to the operator takes, and because the air vent that is provided with on drain pan is corresponding with the vented cavity of heat abstractor, in bulb work and the heat abstractor adstante febre, air can flow through from the vent passages of vented cavity and air vent formation, form an air stream, heat on the heat abstractor fin is taken away, thereby brought better radiating effect; The utility model good looking appearance and good heat dissipation effect as fully visible, and can prevent that bulb shell is overheated and the danger that causes, be a kind of LED lighting bulb that has innovation and market prospects.

Description of drawings

Further specify below in conjunction with the drawings and specific embodiments:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a fractionation structural representation of the present utility model;

Fig. 3 uses the moving principle schematic of space-time air-flow for the utility model.

The specific embodiment

With reference to Fig. 1～Fig. 2, a kind of LED lighting bulb provided by the utility model, comprise modular connection 1, heat abstractor 2, LED illuminator 3, and cover the lampshade 4 of LED illuminator 3, heat abstractor 2 is arranged at lampshade 4 rears, LED illuminator 3 is installed on the heat abstractor 2, under this configuration state, in heat abstractor 2, will be provided with the power drives that connects LED illuminator 3, it is connected with the modular connection 1 at rear portion, is inserted on the lamp socket by modular connection 1, under "on" position, civil power is supplied with LED illuminator 3 through power drives, and LED illuminator 3 will luminous work.In the utility model, heat abstractor 2 peripheries row is provided with fin 21, form vented cavity 22 between the adjacent fin 21, the described fin 21 outer drain pans 5 that envelope heat abstractor 2 from the rear that are provided with, drain pan 5 rear sides are provided with the air vent 51 corresponding with vented cavity 42 positions of heat abstractor 4, and described modular connection 1 is fixedlyed connected with drain pan 5 tail ends.Generally, the material of heat abstractor 2 is an aluminium, has heat transfer effect preferably, thereby heat is also higher when work, the drain pan 5 that the utility model is set up can be sleeved on the heat abstractor 2 for heat resistant plastice or other suitable materials, can reach the effect of isolation radiating device 2 heats, the operator just can not ironed by the heat of heat abstractor 2 when the contact bulb like this; The air vent 51 that is had in addition cooperates the structure of vented cavity 42, formed the vent passages that a series of front portions by bulb are communicated to the rear portion, the effect of its generation is shown in the dotted arrow of Fig. 3, in the bulb course of work, heat abstractor 2 and fin 21 absorb the heat that LED illuminator 3 produces, because the effect of vent passages, air will flow into from the front portion of heat abstractor 2, vented cavity 42 through 21 of fins flows through again, finally flow out from air vent 51, form the air stream of a circulation, reached the effect of the heat radiation that cold air enters, hot-air flows out.

Wherein as preferred implementation of the present utility model, heat abstractor 2 middle parts are provided with the installed surface 23 that LED illuminator 3 is installed, and described lampshade 4 rear portion suits are installed on installed surface 23 peripheries, prevent that like this heat radiation of 4 pairs of heat abstractors 2 of lampshade from causing interference; And in the described lampshade 4, anterior be of a size of with drain pan 5 sizes suitablely, make that the monnolithic case of bulb and conventional bulb are similar, comparatively attractive in appearance.

As fully visible, the utility model good looking appearance and good heat dissipation effect, and can prevent that bulb shell is overheated and the danger that causes, be a kind of LED lighting bulb that has innovation.

Certainly, above-mentioned just sky has been opened the utility model preferred embodiment, and equivalent technical solutions in addition and other embodiments also belong to protection domain of the present utility model.

Claims

1. A LED lighting bulb, comprising a standard connector (1), heat sink (2), LED illuminant (3), and a lampshade (4) covering the LED illuminant (3), the heat sink (2) is arranged on Behind the lampshade (4), the LED illuminant (3) is installed on the heat dissipation device (2), and it is characterized in that: the outer peripheral row of the heat dissipation device (2) is provided with fins (21), and the adjacent fins (21) A ventilation cavity (22) is formed between the fins (21), and a bottom case (5) covering the heat dissipation device (2) from the rear is arranged on the outside of the fins (21). The position of the ventilation cavity (42) corresponds to the ventilation hole (51), and the standard joint (1) is fixedly connected to the tail end of the bottom case (5).

2. The LED lighting bulb according to claim 1, characterized in that: the middle part of the heat dissipation device (2) is provided with a mounting surface (23) for installing the LED illuminant (3), and behind the lampshade (4) The outer sleeve is installed on the periphery of the mounting surface (23).

3. The LED lighting bulb according to claim 2, characterized in that: the size of the middle and front part of the lampshade (4) matches the size of the bottom case (5).