CN202580832U - LED (Light-Emitting Diode) fluorescent lamp - Google Patents

Abstract

The utility model provides an LED (Light-Emitting Diode) fluorescent lamp, comprising a housing made of a PC (polycarbonate) material, chip LEDs for lighting, and an aluminum-base circuit board for arranging the chip LEDs, wherein the chip LEDs are arranged on the aluminum-base circuit board in a single row; the aluminum-base circuit board is arranged in an arrangement trough on the housing; the LED driving power supply is divided into two parts which are arranged in end caps on the two ends of the housing; and a self-biased transistor and a reference source are adopted to realize linear current regulation for the driving power supply. The LED (Light-Emitting Diode) fluorescent lamp disclosed by the utility model overcomes the defects of the existing LED fluorescent lamps have light spots and shadows, tubes are bent during lighting, the light of the existing LED fluorescent lamps is not as soft as the light of conventional fluorescent lamps, and a potential risk that a person gets an electric shock when touching the existing LED fluorescent lamps by hand.

Description

The LED fluorescent lamp

Technical field

The utility model relates to a kind of LED lighting device, particularly a kind of LED tubulose lighting.

Background technology

LED is approved widely as the cleaning light source of environmental protection, has been widely used in illuminating industry.Existing LED fluorescent lamp, shell are generally aluminium and the PC material combines, led light source arranged, on-chip power, alternating current input.The problem that exists is: have hot spot and shadow; Fluorescent tube adopts the heat radiation of aluminum shell material, increases the lamp body overall weight, because the inhomogeneous adstante febre fluorescent tube that causes of lamp body heating temp is crooked, causes fluorescent tube length to be shunk simultaneously, and the potential risk of falling is arranged; The aluminium base circuit board that carries light emitting diode directly links to each other with aluminium shell, and free-hand contact has the potential danger of electric shock; The LED on-chip power has occupied the light source design space in the aluminium base back, causes luminous diffuse reflection limited, and light is soft not as conventional fluorescent light.

The utility model content

The purpose of the utility model is in order to overcome above-mentioned defective a kind of LED fluorescent lamp to be provided, and light is being reflected near in the orbicular fluorescent tube repeatedly, in fluorescent tube, forms a luminous integral body, produces even, soft illuminating effect.

The technical scheme of the utility model is: a kind of LED fluorescent lamp; Comprise the shell processed with the PC material, be used for luminous paster LED, be used to install the aluminium base circuit board of paster LED; Wherein said paster LED is single to be installed on the said aluminium base circuit board; Said aluminium base circuit board is installed in the mounting groove on the said shell, and the LED driving power divides in the plug that two parts are arranged on said shell two ends.

Said LED driving power comprises and is used for importing the rectifier bridge V1 that the city is electrically connected with alternating current; Be used to provide the automatic biasing transistor Q1 of constant current; Be used to control integrated operational amplifier U1, the resistance R 1 of said automatic biasing transistor Q1 base current; Being used to said integrated operational amplifier U1 provides the reference voltage module Vref of reference voltage; Being used to said integrated operational amplifier provides the power module Ess of operating voltage, is used to the resistance R 4 of said integrated operational amplifier feedback, is used to form resistance R 2, the R3 of bleeder circuit; Wherein said rectifier bridge V1 input connects alternating current; Said rectifier bridge V1 exports (+) and holds the colelctor electrode of connection transistor Q1, is also connected to said power module Ess, said rectifier bridge V1 output (-) link public terminal GND, and the base stage of said transistor Q1 is connected to the output of said integrated operational amplifier U1 through resistance R 1; The emitter stage of said transistor Q1 connects paster LED through resistance R 2, the R3 of series connection; The in-phase input end of said integrated operational amplifier U1 connects the reference voltage output end of said reference voltage module Vref, and the inverting input of said integrated operational amplifier U1 connects the common port of said resistance R 2, R3 through said resistance R 4, and said integrated operational amplifier U1 power positive end connects the output of said power module Ess; Said integrated operational amplifier U1 power supply negative terminal connects public terminal GND, and said reference voltage module Vref connects said power module Ess.

The width of said aluminium base circuit board is 12mm, and the degree that groove width is installed on the said shell is 12.4mm.

The utility model; Lamp housing adopts the PC material of high transmission rate; Driving power adopts automatic biasing transistor and a reference source to realize the linear regulation electric current; To guarantee to led light source constant current being provided, the LED paster adopts the single mode that is installed in aluminium base circuit board, and driving power is installed in the two ends of fluorescent tube; The hot spot that has solved existing LED fluorescent lamp existence from structure is not so good as the soft free-hand defectives such as potential danger that have electric shock that contact of conventional fluorescent light with shadow, the bending of adstante febre fluorescent tube, light.

Description of drawings

Fig. 1 is the cross-sectional structure sketch map of the utility model fluorescent lamp;

Fig. 2 is the driving power circuit schematic diagram of the utility model;

Among the figure: 1-shell, the aluminium base circuit board of 2-, 3-paster LED, 4-mounting groove, V1-rectifier bridge, Q1-triode, R1, R2, R3, R4, R5-resistance, U1-integrated operational amplifier, Ess-circuit control power supply, Vref-reference voltage, GND-common port.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further explain.

Like Fig. 1; The utility model provides a kind of LED fluorescent lamp; Comprise the shell 1 processed with the PC material, be used for luminous paster LED 3, be used to install the aluminium base circuit board 2 of paster LED; Said paster LED 3 single being installed on the aluminium base circuit board 2, said aluminium base circuit board 2 is installed in the mounting groove 4 on the said shell 1, and the LED driving power divides in the plug that two parts are arranged on said shell two ends.Specific to T8 and two kinds of models of T10; T8 pipe shell diameter 26mm, thickness of pipe wall 1mm, whole lamp length: 6W/9W/12W is long to be 600mm (containing G13 stitch 614mm); The length of 12W/16W is 1197mm (containing G13 stitch 1214mm); Aluminium base circuit board 2 width are 12mm, and the groove width that aluminium base circuit board 2 inserts the mounting groove 4 on the shell 1 is 12.4mm, paster LED 3 and lamp housing maximum normal distance 20.1mm; T10 pipe shell diameter 30mm; Thickness of pipe wall 1mm; Whole lamp length: 6W/9W/12W is long to be 600mm (containing G13 stitch 614mm), and the length of 12W/16W is 1214mm (containing the G13 stitch), and the width of aluminium base circuit board 2 is 12mm; Its groove width of inserting the mounting groove 4 on the shell 1 is 12.4mm, paster LED and lamp housing maximum normal distance 24.75mm.Paster LED 3 single being installed on the aluminium base circuit board 2, LED driving power are divided in the plug that two parts place fluorescent tube two, and through the input of two G13 pin alternating current, an end is a zero line, and an end is a live wire; By lamp body PC insulation, minimum insulation is apart from 1mm through part for electric current.Body light transmittance 84%～88%, whole light effect >=97/W, luminous flux is respectively 6W >=580Lm, 9W >=870Lm, 12W >=1160Lm, 16W >=1550Lm.The colour temperature routine is 3000～3500K (warm white), 5500～6000K (just white), specifically adjustment as required.

Like Fig. 2; The led light source driving power circuit schematic diagram of the utility model; Utilize automatic biasing transistor and a reference source to realize linear regulation current drives led light source, be used for importing the rectifier bridge V1 that the city is electrically connected with alternating current to guarantee constant current being provided, to comprise to led light source; Be used to provide the automatic biasing transistor Q1 of constant current; Be used to control integrated operational amplifier U1, the resistance R 1 of said automatic biasing transistor Q1 base current, be used to the reference voltage module Vref that said integrated operational amplifier U1 provides reference voltage, be used to the power module Ess that said integrated operational amplifier provides operating voltage; Be used to the resistance R 4 of said integrated operational amplifier feedback, be used to form resistance R 2, the resistance R 3 of bleeder circuit.Said rectifier bridge V1 input connects alternating current; Said rectifier bridge V1 exports (+) and holds the colelctor electrode of connection transistor Q1, is also connected to said power module Ess; Said rectifier bridge V1 output (-) link public terminal GND; The base stage of said transistor Q1 is connected to the output of said integrated operational amplifier U1 through resistance R 1; The emitter stage of said transistor Q1 is supplied power for the paster LED of series connection through said resistance R 2, the R3 of series connection; The in-phase input end of said integrated operational amplifier U1 connects the reference voltage output end of said reference voltage module Vref, and the inverting input of said integrated operational amplifier U1 connects the common port of said resistance R 2, R3 through said resistance R 4, and said integrated operational amplifier U1 power positive end connects the output of said power module Ess; Said integrated operational amplifier U1 power supply negative terminal connects public terminal GND, and said reference voltage module Vref connects said power module Ess.

Preferably, said transistor Q1 selects the transistor of withstand voltage 50V for use, and parallel resistance R5 on said resistance R 3 is convenient to debugging, coupling.

Certainly; The utility model also can have other various embodiments; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims (4)

1. LED fluorescent lamp; Comprise the shell (1) processed with the PC material, be used for luminous paster LED (3), be used to install the aluminium base circuit board (2) of paster LED; It is characterized in that: said paster LED (3) is single to be installed on the said aluminium base circuit board (2); Said aluminium base circuit board (2) is installed in the mounting groove (4) on the said shell (1), and the LED driving power divides in the plug that two parts are arranged on said shell two ends.

2. LED fluorescent lamp according to claim 1; It is characterized in that: said LED driving power comprises and is used for importing the rectifier bridge (V1) that the city is electrically connected with alternating current; Be used to provide the automatic biasing transistor (Q1) of constant current; Be used to control integrated operational amplifier (U1), the resistance (R1) of said automatic biasing transistor (Q1) base current; Being used to said integrated operational amplifier (U1) provides the reference voltage module (Vref) of reference voltage; Being used to said integrated operational amplifier provides the power module of operating voltage (Ess); Be used to the resistance (R4) of said integrated operational amplifier feedback; Be used to form resistance (R2), the resistance (R3) of bleeder circuit, wherein said rectifier bridge (V1) input connects alternating current, and said rectifier bridge (V1) is exported (+) and held the colelctor electrode of connection transistor (Q1), is also connected to said power module (Ess); Said rectifier bridge (V1) output (-) link common port (GND); The base stage of said transistor (Q1) is connected to the output of said integrated operational amplifier (U1) through resistance (R1), and the emitter stage of said transistor (Q1) connects paster LED through the said resistance (R2, R3) of series connection, and the in-phase input end of said integrated operational amplifier (U1) connects the reference voltage output end of said reference voltage module (Vref); The inverting input of said integrated operational amplifier (U1) connects the common port of said resistance (R2, R3) through said resistance (R4); Said integrated operational amplifier (U1) power positive end connects the output of said power module (Ess), and said integrated operational amplifier (U1) power supply negative terminal connects common port (GND), and said reference voltage module (Vref) connects said power module (Ess).

3. LED fluorescent lamp according to claim 2 is characterized in that: transistor (Q1) is selected the transistor of withstand voltage 50V for use described in the said LED driving power, and said resistance (R3) is gone up parallel resistance (R5).

4. LED fluorescent lamp according to claim 1 is characterized in that: said aluminium base circuit board (2) width is 12mm, and said mounting groove (4) width is 12.4mm.