CN201255391Y - LED bulb - Google Patents

Abstract

The utility model relates to a LED illumination lamps and lanterns. The utility model provides a LED bulb, is including the LED light source, and the LED light source passes through the LED fixed plate and installs on the heat dissipation lamp stand, and the PCB subassembly is fixed in the heat dissipation lamp stand with the help of insulating part, and the LED fixed plate of installation is connected on PCB subassembly upper end and the heat dissipation lamp stand, and the lower extreme is connected with the lamp holder subassembly. The heat radiation lamp holder is also sleeved with a metal lamp shell for increasing heat radiation. The radiating lamp holder is trumpet-shaped, and ribs for increasing the radiating area are convexly arranged on the outer wall of the radiating lamp holder. The utility model provides a LED bulb, LED light source set up on metal aluminium matter heat dissipation lamp stand, and the suit increases radiating aluminium matter lamp body outside the heat dissipation lamp stand moreover, not only makes the appearance of bulb pleasing to the eye, can provide the assurance for LED's heat dissipation moreover, and this LED bulb is rational in infrastructure, light-emitting efficiency is high, long service life, can replace the incandescent lamp and the fluorescent lamp of the illumination of unifying.

Description

A kind of LED light bulb

technical field

The utility model relates to an LED lighting fixture.

Background technique

LED is a semiconductor that can convert electrical energy into visible light. It has changed the principle of tungsten filament luminescence of incandescent lamps and the three-based toner luminescence of fluorescent energy-saving lamps. It uses electric field luminescence, which has long life, high luminous efficiency, no radiation and low power. Consumption and many other advantages. With the concept of "energy saving" and "green lighting", LEDs are gradually introduced into lighting fixtures as light sources.

At present, incandescent bulbs or fluorescent tubes are the main light sources used in daily lighting fixtures such as daily bulbs and desk lamps. However, the electro-optical conversion efficiency of white bulbs and fluorescent tubes is relatively low, and their heat is large. The service life is short, generally only about 3000 hours. Due to the significant advantages of LEDs, some light bulbs using LEDs as light sources have also appeared on the market. shorten the service life of lamps.

Improved LED light bulbs have also appeared recently, such as the lighting device disclosed in Chinese Patent 200420083451.8 "LED Lighting Device" with a plurality of low-power LEDs installed on the LED lamp board as light sources. The brightness of this low-power LED Weaker, lower luminous efficiency, faster light decay can not meet the requirements of normal lighting. And the disclosed LED light bulb of Chinese patent 200620013512.2, if it adopts high-power LED as light source, then its radiator will be too small, can not well solve the problem of heat dissipation.

Utility model content

The technical problem to be solved by the utility model is to provide an LED light bulb with reasonable structure, high light extraction efficiency and good heat dissipation effect.

Design an LED light bulb, including an LED light source, the LED light source is installed on the heat dissipation lamp holder through the LED fixing plate, the PCB assembly is fixed in the heat dissipation lamp holder by means of an insulator, the upper end of the PCB assembly and the LED fixing plate installed on the heat dissipation lamp holder connected, and the lower end is connected with the lamp head assembly.

As an improvement of the above solution, the lamp cap assembly includes a lamp cap fixing part, which is in the shape of a "middle", one end of the lamp cap fixing part is connected to the heat dissipation lamp holder, and the other end is connected to the lamp cap, and the lower end of the PCB board is connected to the lamp cap.

The heat dissipation lamp holder is also covered with a metal lamp housing to increase heat dissipation, and the metal lamp housing is also fixed on the lamp holder fixture. The heat dissipation lamp holder is trumpet-shaped, and its outer wall is protruded with ribs to increase the heat dissipation area.

Compared with the prior art, the utility model has the following remarkable effects:

The LED light bulb has the advantages of reasonable structure, high light output efficiency and long service life, and can replace incandescent lamps and fluorescent lamps of conventional lighting. In the LED light bulb provided by the utility model, the LED light source is arranged on the metal aluminum heat dissipation lamp holder, and the aluminum lamp housing for increasing heat dissipation is placed outside the heat dissipation lamp holder, which not only makes the appearance of the light bulb beautiful, but also provides heat dissipation for the LED. Guaranteed, the design of the top position of the LED enables the light to be emitted at a wide angle, making the lighting effect closer to that of traditional lamps.

The LED light bulb supplies power to the LED light source through the internal PCB board, which can not only supply variable voltage and constant current, but also realize three-level dimming. In addition, the design of the inner cavity of the utility model not only considers the insulation of the PCB electronic components and the heat sink of the lamp housing, but also leaves a large internal space between the PCB board and the insulation to ensure that the product can pass various tests. Especially the high voltage test, through repeated experiments, the utility model product can pass the test of 4000V AC.

Description of drawings

Fig. 1 is the appearance structure schematic diagram of the present utility model;

Fig. 2 is the sectional structural diagram of the utility model;

Fig. 3 is an exploded schematic diagram of parts of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail through embodiment.

Referring to Figures 1-3, an LED light bulb is composed of a glass lampshade 1, an LED light source 9, an LED fixing plate 8, a heat dissipation lamp holder 2, a PCB board 6, and a lamp cap. The LED light source is connected on the LED fixing plate, and the LED light source adopts a high-power LED, and the number of the LEDs can be one, two, or three.

The LED fixing plate can be fixed on the upper part of the heat dissipation lamp holder by means of screws or bonding, and the glass lampshade for protecting the LED light source can also be arranged above it in the form of buckling or screwing with the heat dissipation lamp holder. The heat dissipation lamp holder 2 is designed into a trumpet shape, and its outer wall is protruded with ribs 21 that increase the heat dissipation area, which can increase the heat dissipation area and improve heat dissipation efficiency. A metal lamp housing 3 is sheathed outside the heat dissipation lamp holder, and the metal lamp housing not only decorates the lamp body but also ensures heat dissipation.

There is a long square hole at the bottom of the metal lamp housing, and an assembly hole on the upper part. The PCB board 6 that provides constant current for the LED light source is installed in the metal lamp housing and the heat dissipation lamp holder through the assembly hole, and connected with the LED fixing plate on the upper part of the heat dissipation lamp holder. . In order to ensure that the heat generated by the LED light source can be dissipated effectively, the heat-dissipating lamp holder and the metal shell are made of excellent heat-conducting materials, such as aluminum, aluminum alloy, copper, etc. Considering the insulation between the PCB board, the heat-dissipating lamp holder and the metal lamp housing, the cylindrical plastic insulating part 7 is wrapped on the outside of the PCB board 6, so that a large internal space is reserved between the PCB board and the insulating part, which can Ensure that the product passes through various tests, especially the high voltage test, and the LED light bulb of this embodiment can pass the test of 4000V AC.

In order to improve the lighting effect of the LED light bulb, a dimming circuit is installed on the PCB. The dimming circuit adopts the existing mature circuit. The dimming circuit is used to control the change of the current or voltage supplied to the LED light source, so as to realize the brightness of the LED light. degree. The upper end of the PCB board is connected with the LED fixing plate installed on the heat dissipation lamp holder, and the lower end is connected with the lamp cap assembly. The lamp cap assembly includes a lamp cap fixing part 4, which is "middle" in shape, one end of the lamp cap fixing part is connected to the heat dissipation lamp holder, and the other end is connected to the lamp cap 5, and the lower end of the PCB board is connected to the lamp cap. In order to facilitate popularization and use, the lamp holder of the LED light bulb can be selected from the common lamp holder of existing incandescent light bulbs, such as E27 lamp holder or other standard lamp holders.

When assembling, first put the PCB board into the insulator and fix it well, then put the insulator into the heat dissipation lamp holder, then fasten the heat dissipation lamp holder and the metal lamp housing on the lamp holder, and then install the lamp holder Put it on the lamp holder fixing part 4 and apply glue to fix it after punching. After the lamp cap is fixed, the LED fixture connected to the LED light source is screwed to the upper part of the heat-dissipating lamp holder, and finally the glass lampshade 1 is installed.

Claims (6)

1, a kind of LED bulb, include led light source, it is characterized in that: described led light source (9) is installed on the heat radiation lamp socket (2) by LED fixed head (8), pcb board (6) is fixed in the heat radiation lamp socket by means of insulating part (7), the pcb board upper end is connected with mounted LEDs fixed head on the heat radiation lamp socket, and the lower end is connected with lamp adapter assembly.

2, LED bulb according to claim 1, it is characterized in that: described lamp adapter assembly includes lamp holder fixture (4), the lamp holder fixture be " in " shape, lamp holder fixture one end connects the heat radiation lamp socket, the other end is connected with lamp holder (5), and the lower end of described pcb board is connected on the lamp holder.

3, LED bulb according to claim 2 is characterized in that: described heat radiation lamp socket also is set with the metal lamp housing (3) that increases heat radiation outward, and the metal lamp housing also is fixed on the lamp holder fixture.

4, LED bulb according to claim 3 is characterized in that: described heat radiation lamp socket is horn-like, convexes with the rib (21) that increases area of dissipation on its outer wall.

5, LED bulb according to claim 4 is characterized in that: also be connected with a glass lamp shade (1) that is used to cover led light source on the described heat radiation lamp socket.

6, according to the described LED bulb of claim 1～5, it is characterized in that: described pcb board is provided with light adjusting circuit, and the light adjusting circuit employing can be controlled the electric current of supply led light source or the ripe circuit of voltage change.

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