CN201934981U

CN201934981U - Alternating current led candle bulb

Info

Publication number: CN201934981U
Application number: CN2010206772794U
Authority: CN
Inventors: 罗文正; 张明; 李东明
Original assignee: Sichuan Sunfor Light Co Ltd
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2011-08-17
Anticipated expiration: 2020-12-23

Abstract

The utility model provides an alternating current LED candle bulb, which is not driven by a switch power supply, but by alternating current directly. The alternating current LED candle bulb includes a lampshade, an LED light-emitting body, a heat sink and a lamp cap, wherein a white light LED is arranged on the LED light-emitting body. The alternating current LED candle bulb further includes a drive plate which is electrically connected with the LED light-emitting body. The white light LED is formed by encapsulating a blue light LED chip and yellow fluorescent powder with persistence characteristic. The alternating current LED candle bulb abandons the drive method by using the switch power supply which has shorter service life, large volume and higher cost, but directly uses a simple electronic circuit for rectification, utilizes the common blue light LED chip and the yellow fluorescent powder with persistence characteristic, and is directly turned on at 220 V or 110 V alternating voltage; and meanwhile the fluorescent powder has high persistence luminance higher than 20 ms, thereby ensuring that when the alternating current LED candle bulb works with the alternating current power supply not lower than 50 Hz, the luminance at intervals can be made up, the stroboscopic effect can be eliminated, and stable white light can be obtained.

Description

AC LED candle bulb

Technical field

The utility model relates to a kind of LED bulb, particularly relates to a kind of AC LED candle bulb.

Background technology

Along with human society is constantly progressive, urbanization process is more and more faster, and resource consumption and environmental pollution are following, and becomes the key factor that hinders Community health's development, and the new technology of various raising efficiency of energy utilization, the demand of new equipment are increasing.At lighting field, the technological progress under this background of LED semiconductor lighting is very fast, is progressively accepted by market, and the application scale is increasing.In existing LED lighting apparatus, adopt the Switching Power Supply constant-current drive technology of comparative maturity mostly, its advantage is that operating current is stable, the actuation techniques comparative maturity.But some significant disadvantages are also arranged, and the reliability of driver is not very high, and the life-span generally all is lower than the life-span of led light source.In the small size light fixture, the conversion efficiency of driver is all not too high, and the volume of light fixture is difficult to do little.A kind of mode that adopts integrated circuit now also occurs, a lot of little chips have been packaged together by string and compound mode, can directly use the LED of 220V or 110V alternating current.It is high that but this scheme requires encapsulation technology, and the equipment input is bigger, and cost is higher relatively.

The utility model content

Technical problem to be solved in the utility model provides a kind of without the Switching Power Supply driving, can directly use to exchange electrically driven (operated) AC LED candle bulb, and have the advantage that cost is low, volume is little, conversion efficiency is high.

The technical scheme that the utility model technical solution problem is adopted is: AC LED candle bulb, comprise lampshade, LED illuminator, radiator and lamp holder, described LED illuminator is provided with white light LEDs, also comprise drive plate, described drive plate is electrically connected with the LED illuminator, and described white light LEDs is to be formed by blue-light LED chip and the yellow fluorescent powder encapsulation that has light-decay characteristic.

The beneficial effects of the utility model are: abandoned and adopted the Switching Power Supply driving method that the life-span is short, volume is big, cost is higher, but after directly adopting the simple electronic circuit rectification, utilize common blue-light LED chip to be added with the yellow fluorescent powder of light-decay characteristic, under 220V or 110V alternating voltage, directly light, fluorescent material has the above high after-glow brightness of 20ms simultaneously, when guaranteeing under being not less than the AC power of 50HZ, to work, can remedy the luminosity of intermittent time, eliminate stroboscopic effect, obtain stable white light.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is the part sectioned view of Fig. 1.

Fig. 3 is the structural representation (broken section) of LED illuminator of the present utility model.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the structural representation (broken section) of radiator of the present utility model.

Fig. 6 is the structural representation of drive plate of the present utility model.

Fig. 7 is a circuit connection diagram of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

As depicted in figs. 1 and 2, AC LED candle bulb of the present utility model comprises lampshade 1, LED illuminator 2, radiator 3, drive plate 4 and lamp holder 5, and described lampshade 1 and LED illuminator 2 are installed on the radiator 3, and described drive plate 4 is electrically connected with LED illuminator 2.Above-mentioned candle bulb is meant the candle modeling that is shaped as of bulb.

LED illuminator 2 comprises the body 203 that highly heat-conductive material is made, as shown in Figure 3 and Figure 4, be provided with mounting groove 201 in the upper end of body 203, white light LEDs 202 is installed on the mounting groove 201, can connect or the screw ways of connecting is fixed on the mounting groove 201 by high thermal conductive silicon is gluing, a plurality of white light LEDs 202 are by the lead series-fed.The lower end of body 203 is a heat conduction end 205, and it is provided with connecting thread, and body 203 links together by connecting thread and radiator 3, and the heat that white light LEDs 202 is produced is transferred to radiator 3 by heat conduction end 205.Above-mentioned white light LEDs 202 comprises from warm white to natural white light the scope to cold white light again.

White light LEDs 202 is formed by the yellow fluorescent powder encapsulation of blue-ray LED and band light-decay characteristic, this yellow fluorescent powder has the above high after-glow brightness of 20ms, guarantees can remedy the luminosity of intermittent time under the frequency of 50HZ or 60HZ, eliminate stroboscopic effect, obtain stable white light.

Radiator 3 is to be made by metallic material of aluminum, copper or other high heat conduction nonmetallic materials, and it is provided with heat radiation wing 301, lampshade mounting groove 302, installing hole 303 and second through wires hole 304, as shown in Figure 5.Lampshade 1 is installed on the radiator 3 by lampshade mounting groove 302, and the body 203 of LED illuminator 2 is installed on the radiator 3 by installing hole 303.

Drive plate 4 comprises circuit board 401, and circuit board 401 is provided with rectifier cell 402 and current-limiting resistance 404, can also comprise decompression capacitor 403, all is to adopt series system to connect, as shown in Figure 6 and Figure 7.A plurality of white light LEDs 202 are by after the lead series connection, and lead passes first through wires hole 204 on the LED illuminator 2 and second through wires hole 304 on the radiator 3, realize and being electrically connected of drive plate 4, and final two electrodes by lamp holder 5 communicate with extraneous alternating current.

Radiator 3 can adopt integrative-structure with lamp holder 5, and the interface type of lamp holder 5 can be E27, E14 or GU1 or the like.Drive plate 4 can be set directly in the cavity of lamp holder 5.

Circuit board 401 can adopt the PCB circuit board, and lampshade 1 can adopt transparent or translucent PC, acrylic or glass to make.

When circuit passes to 220V or 110V alternating current; decompression capacitor 403 plays step-down and current limliting; utilize its capacitive reactance that under the AC signal frequency, produces to limit maximum operating current; after obtaining stable electric current; become direct current that circuit is powered AC rectification by rectifier cell 402 again; light white light LEDs 202, current-limiting resistance 404 plays electric current in the restriction circuit, and protection white light LEDs 202 does not suffer the impact of big electric current.

Claims

1. AC LED candle bulb, comprise lampshade (1), LED illuminator (2), radiator (3) and lamp holder (5), described LED illuminator (2) is provided with white light LEDs (202), it is characterized in that: also comprise drive plate (4), described drive plate (4) is electrically connected with LED illuminator (2), and described white light LEDs (202) is to be formed by blue-light LED chip and the yellow fluorescent powder encapsulation that has light-decay characteristic.

2. AC LED candle bulb according to claim 1 is characterized in that: described lampshade (1) and LED illuminator (2) are installed on the radiator (3).

3. AC LED candle bulb according to claim 1 is characterized in that: described drive plate (4) comprises circuit board (401), and circuit board (401) is provided with rectifier cell (402) and current-limiting resistance (404).

4. AC LED candle bulb according to claim 3 is characterized in that: also comprise decompression capacitor (403) on the described drive plate (4).

5. AC LED candle bulb according to claim 1, it is characterized in that: described LED illuminator (2) comprises body (203), be provided with mounting groove (201) in the upper end of body (203), described white light LEDs (202) is installed on the mounting groove (201), the lower end of described body (203) is heat conduction end (205), it is provided with connecting thread, and described body (203) links together by connecting thread and radiator (3).

6. AC LED candle bulb according to claim 1 is characterized in that: described radiator (3) is provided with heat radiation wing (301), lampshade mounting groove (302), installing hole (303) and second through wires hole (304).

7. AC LED candle bulb according to claim 6, it is characterized in that: described lampshade (1) is installed on the radiator (3) by lampshade mounting groove (302), and the body (203) of described LED illuminator (2) is installed on the radiator (3) by installing hole (303).

8. AC LED candle bulb according to claim 1, it is characterized in that: after a plurality of white light LEDs (202) are connected by lead, lead passes first through wires hole (204) on the LED illuminator (2) and second through wires hole (304) on the radiator (3), be electrically connected with drive plate (4), communicate with extraneous alternating current by lamp holder (5) again.