CN203104876U

CN203104876U - Direct-current power-supplied LED (light-emitting diode) lamp

Info

Publication number: CN203104876U
Application number: CN 201220717877
Authority: CN
Inventors: 庄光前
Original assignee: GUANGZHOU SHORYO ELECTRIC CO Ltd
Current assignee: GUANGZHOU SHORYO ELECTRIC CO Ltd
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-07-31
Anticipated expiration: 2022-12-24

Abstract

The utility model discloses a direct-current power-supplied LED (light-emitting diode) lamp. The direct-current power-supplied LED lamp comprises a direct-current power supply, as well as a first LED light source circuit and a second LED light source circuit which are connected with the direct-current power supply, wherein the first LED light source circuit is a bridge rectifier circuit formed by connecting four groups of LEDs in pairs; the two input ends of the bridge rectifier circuit are connected with the direct-current power supply; and the two output ends of the bridge rectifier circuit are connected with the second LED light source circuit. The LED lamp disclosed by the utility model can normally work regardless of positive connection or reverse connection with the external direct-current power supply by virtue of the principle of the bridge rectifier circuit, thus improving the durability of the product.

Description

A kind of LED lamp of direct current supply

Technical field

The utility model relates to a kind of LED lamp, more particularly, is a kind of LED lamp of direct current supply.

Background technology

LED(Light Emitting Diode), light-emitting diode is a kind of solid-state semiconductor device that electric energy can be converted into visible light, and it can directly be converted into light to electricity.The heart of LED is a semi-conductive wafer, and an end of wafer is attached on the support, and an end is a negative pole, and the other end connects the positive pole of power supply, makes entire wafer by epoxy encapsulation.Semiconductor wafer is made up of two parts, and a part is a P type semiconductor, occupies an leading position in its hole, the inside, and the other end is a N type semiconductor, mainly is electronics here.When these two kinds of semiconductors couple together, just form a P-N knot between them.When electric current acted on this wafer by lead, electronics will be pushed to the P district, and electronics will send energy with the form of photon, the luminous principle of LED that Here it is then with hole-recombination in the P district.Initial LED is as the indication light source of instrument and meter, and along with the development of great power LED technology, low power consuming and feature of long life make LED obtain extensively and rapidly using at lighting field, have produced good economic benefits and social benefit.

The current LED lamp that directly uses in utility grid is made up of controller and led light source two parts.Controller carries out rectification to the AC power of civil power, makes it become the galvanic current source, supplies with led light source.And be installed in the controller part of lamp interior, and owing to be subjected to the little restriction of lamp interior installation dimension, the design and installation of various protective circuits are restricted, the high temperature environment for use then influences the life-span of its electronic component and the quality of controller.Led light source also far is less than lifetime often, but makes the LED light fixture scrap because of the fault of controller, and LED lamp feature of long life does not obtain performance.

On the other hand, provide galvanic " direct current supply " mode to receive publicity just day by day for equipment or household electrical appliance.Various electrical equipment such as office equipment such as various communication equipments, computer, television set convertible frequency air-conditioner housed device in fact all use direct current work.And directly provide direct current to these equipment and household electrical appliance, and can improve the efficient and the reliability of these power consumption equipments greatly, can reduce the loss that the transmission course alternating current produces simultaneously in electrical network, improve whole energy use efficiency.The glamour place of direct current supply mode that Here it is.Occurred ac/dc abroad and mixed distribution system, this will be the developing direction of following mains supply.

But DC power-supply system has the branch of both positive and negative polarity, and equipment or the careless reversal connection of electrical equipment that DC power-supply system is used will cause the damage of equipment or electrical equipment, takes place especially easily when this problem is transformed into direct current system in used ac power supply system.

The utility model content

No matter it is just to connect or reversal connection that the purpose of this utility model is to provide a kind of LED of making lamp and external direct current power supply, the direct current supply LED lamp that the LED lamp can both operate as normal.

The technical solution of the utility model is: a kind of LED lamp of direct current supply, wherein, comprise DC power supply, the first led light source circuit that is connected with DC power supply and the second led light source circuit, the first led light source circuit is the bridge rectifier that four groups of LED join in twos and constitute, and two inputs of bridge rectifier are connected with DC power supply, its two output is connected with the second led light source circuit.

The LED lamp of above-mentioned a kind of direct current supply, the described second led light source circuit are organized the LED lamp or are organized the LED lamp more by list and be formed in parallel, and single group LED is composed in series by single or multiple LED lamps.

The LED lamp of above-mentioned a kind of direct current supply, the described first led light source circuit LED's and joint group number and the second led light source circuit LED lamp also the joint group number is identical.

The LED lamp of above-mentioned a kind of direct current supply, described bridge rectifier comprises a LED, the 2nd LED, the 3rd LED and the 4th LED, the negative pole of the one LED is connected with the negative pole of the 3rd LED, its intersection point is connected as the positive pole of output with the second led light source circuit, the positive pole of the 2nd LED is connected with the positive pole of the 4th LED, its intersection point is connected as the negative pole of output with the second led light source circuit, the positive pole of the 3rd LED is connected with the negative pole of the 4th LED, its intersection point is connected with an end of DC power supply as input, and the positive pole of a LED is connected with the negative pole of the 2nd LED, its intersection point is not made input and is connected with the other end of DC power supply.

The utility model utilizes four groups of LED formation bridge rectifier that joins in twos by the first led light source circuit, two inputs of bridge rectifier are connected with DC power supply, its two output is connected with the second led light source circuit, the LED of bridge rectifier conducting in switching process also has the effect that light source is provided, utilize the principle of bridge rectifier, no matter make that LED lamp and DC power supply are just to connect or reversal connection, the LED lamp can both operate as normal.

Description of drawings

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

Fig. 2 is the first led light source circuit theory diagrams of the present utility model.

Among the figure: 1 is DC power supply, and 11,12 is dc supply input, and 2 is the first led light source circuit, and 3 is the second led light source circuit, and 4 is a LED, and 5 is the 2nd LED, and 6 is the 3rd LED, and 7 is the 4th LED.

Embodiment

As shown in Figure 1 and Figure 2, a kind of LED lamp of direct current supply, comprise DC power supply 1, the first led light source circuit 2 that is connected with DC power supply 1 and the second led light source circuit 3, the first led light source circuit 2 is the bridge rectifier that four groups of LED join in twos and constitute, and two inputs of bridge rectifier are connected with DC power supply 1, its two output is connected with the second led light source circuit 3; The second led light source circuit 3 is organized the LED lamp or is organized the LED lamp more by list and is formed in parallel, and single group LED is composed in series by single or multiple LED lamps; The LED's of the first led light source circuit 2 and joint group number and the second led light source circuit 3 LED lamp also the joint group number is identical; Bridge rectifier comprises a LED4, the 2nd LED5, the 3rd LED6 and the 4th LED7, the negative pole of the one LED4 is connected with the negative pole of the 3rd LED6, its intersection point is connected as the positive pole of output with second led light source, 3 circuit, the positive pole of the 2nd LED5 is connected with the positive pole of the 4th LED7, its intersection point is connected as the negative pole of output with the second led light source circuit 3, the positive pole of the 3rd LED6 is connected with the negative pole of the 4th LED7, its intersection point is connected with the input 11 of DC power supply 1 as input, and the positive pole of a LED4 is connected with the negative pole of the 2nd LED5, its intersection point is not made input and is connected with the input 12 in addition of DC power supply 1.

When direct-flow input end 11 is anodal, when the other end 12 was negative pole, power supply added forward voltage to a LED, the 4th LED, a LED, the 4th LED conducting; The 2nd LED, the 3rd LED are added reverse voltage, and the 2nd LED, the 3rd LED end, and constitute the power circuit of DC power supply, a LED, the second led light source circuit, the 2nd LED in the circuit, and current direction is i ₁Flow to.

When direct-flow input end 11 is a negative pole, when the other end 12 was anodal, power supply added forward voltage to the 2nd LED, the 3rd LED, the 2nd LED, the 3rd LED conducting; The one LED, the 4th LED are added reverse voltage, and a LED, the 4th LED end.Constitute the power circuit of DC power supply, the 3rd LED, the second led light source circuit, the 2nd LED in the circuit, current direction is i ₂Flow to.

No matter the sense of current of direct current input how, the electric current by the second led light source circuit 3 all is forward current all the time, and the LED lamp can both operate as normal.

Claims

1. the LED lamp of a direct current supply, it is characterized in that: comprise DC power supply (1), the first led light source circuit (2) that is connected with DC power supply (1) and the second led light source circuit (3), the first led light source circuit (2) is the bridge rectifier that four groups of LED join in twos and constitute, and two inputs of bridge rectifier are connected with DC power supply (1), its two output is connected with second led light source circuit (3).

2. the LED lamp of a kind of direct current supply according to claim 1 is characterized in that: the described second led light source circuit (3) is by single group LED lamp or organize the LED lamp more and be formed in parallel, and single group LED is composed in series by single or multiple LED lamps.

3. the LED lamp of a kind of direct current supply according to claim 1 is characterized in that: described first led light source circuit (2) LED's and joint group number and second led light source circuit (3) the LED lamp also the joint group number is identical.

4. the LED lamp of a kind of direct current supply according to claim 1, it is characterized in that: described bridge rectifier comprises a LED(4), the 2nd LED(5), the 3rd LED(6) and the 4th LED(7), the one LED(4) negative pole and the 3rd LED(6) negative pole be connected, its intersection point is connected as the positive pole of output with second led light source (3) circuit, the 2nd LED(5) positive pole and the 4th LED(7) positive pole be connected, its intersection point is connected as the negative pole of output with the second led light source circuit (3), the 3rd LED(6) positive pole and the 4th LED(7) negative pole be connected, its intersection point is connected a LED(4 as the end of input with DC power supply (1)) positive pole and the 2nd LED(5) negative pole be connected, its intersection point is not made input and is connected with the other end of DC power supply (1).