CN201069072Y

CN201069072Y - LED lamp tube

Info

Publication number: CN201069072Y
Application number: CNU2007201282053U
Authority: CN
Inventors: 何耀颐
Original assignee: MINGWEI TECHNOLOGY Co Ltd
Current assignee: MINGWEI TECHNOLOGY Co Ltd
Priority date: 2007-07-23
Filing date: 2007-07-23
Publication date: 2008-06-04
Anticipated expiration: 2017-07-23

Abstract

The utility model discloses an LED lamp tube, which is composed of a heat radiation cover and a light-penetrable cover, where a clamping groove for fixing an LED strip is arranged in the heat radiation cover; and the LED strip is composed of a PCB or a MCPCB and an LED welded on the PCB and the MCPCB. The LED strip is welded with a bridge-type rectifier module on one end thereof, and the current supplied by an electronic rectifier in a rectification fluorescent frame can be adjusted by the bridge-type rectifier module. The utility model can be directly used as substitute of the fluorescent lamp without replacing other parts of the prior fluorescent lamp house equipment, and is superior in service life and stability than the fluorescent lamp tube without causing environment pollution.

Description

A kind of LED fluorescent tube

Technical field:

The utility model relates to a kind of LED fluorescent tube that is used for fluorescent lamp device, particularly in general widely used fluorescent lamp device, can be used for replacing the LED fluorescent tube of fluorescent tube, also relates to energy technology and green technology simultaneously.

Background technology:

Because fluorescent tube compares with incandescent lamp, have long, advantage such as power consumption is few of life-span, and used widely.But when the energy is more seriously changed, but caused the problem of environmental pollution that causes by the mercury that overflows in the fluorescent tube that goes out of use after using.

In order to solve energy problem that becomes increasingly conspicuous and the problem of environmental pollution that solves the discarded fluorescent lamp pipe, now

Be badly in need of a kind of novel lighting apparatus, and the LED lamp replaces fluorescent tube just to become a kind of conception, because for fluorescent lamp, the LED light fixture has long service life, advantage such as energy-conservation and pollution-free, and, use the LED fluorescent tube to replace fluorescent tube to become the key subjects that each country faces in today that energy problem and environmental problem become increasingly conspicuous.Disclose a kind of technical scheme of the LED illumination pipe of in existing fluorescent tube equipment, directly packing in the Japanese Utility Model patent gazette flat 06-54103 number, but this scheme realizes that difficulty is very big, can't apply.

The utility model content:

The purpose of this utility model is to provide a kind of LED fluorescent tube, particularly in the fluorescent lamp device that uses, can be used for replacing the LED fluorescent tube of fluorescent tube.

For achieving the above object, the utility model is by the following technical solutions:

A kind of LED fluorescent tube, described fluorescent tube is made up of heat dissipating housing and diffuser, be provided with the draw-in groove that is used for fixing the bar-shaped LED lamp bar in the heat dissipating housing, described bar-shaped LED lamp bar by pcb board or MCPCB plate and be welded on pcb board or the MCPCB plate on LED form, this bar-shaped LED lamp bar one end is welded with a bridge rectifier module, comes the electric current that electron rectifier is supplied with in the rectification fluorescence lamp bracket by this bridge rectifier module.

Series welding is connected to a plurality of LED on wherein said pcb board or the MCPCB plate.

Be welded with protection electric capacity on wherein said pcb board or the MCPCB plate, the LED parallel connection after this is protected electric capacity and connects.

Wherein said heat dissipating housing inwall is provided with reflectorized material.

Wherein said diffuser is the arc of angle less than 230 degree.

Wherein said diffuser is made for the transparent light guide material, and it is fixedly connected on heat dissipating housing bottom or both sides.

Terminal on wherein said bridge rectifier module and the plastic cover is electrically connected.

In order to realize replacing fluorescent tube with the LED fluorescent tube, can directly on the equipment of original fluorescent tube, installing of LED fluorescent tube described in the utility model, only needing to change fluorescent tube simultaneously gets final product, need not to change electron rectifier and other equipment, carry out rectification by the bridge rectifier module on the inner LED lamp of the fluorescent tube bar to supplying with electric current in addition, realize the conducting of LED.

The utlity model has following beneficial effect:

1, the utility model will have the power supply that electric ballast is supplied with in the fluorescent lamp device now by the bridge rectifier in the LED fluorescent tube and carry out rectification, directly be defeated by LED then and will throw light on, so the loss of power supply transfer process can be dropped to minimum.

2, the utility model directly replaces fluorescent tube to use, and need not to change miscellaneous part in the existing fluorescent lamp disc apparatus, and dismounting and installation are all very convenient.

3, LED lamp bar is fixed in the heat dissipating housing in the utility model, and it fully contacts with heat dissipating housing, and the heat that LED produces when luminous can be exhaled by heat dissipating housing rapidly, thereby reduces the temperature of LED fluorescent tube.

Description of drawings:

Fig. 1 is the utility model LED fluorescent tube lighting device side view.

Fig. 2 is the utility model LED lamp tube structure schematic diagram.

Fig. 3 is the utility model LED fluorescent tube cutaway view.

Fig. 4 is the utility model LED lamp bar structural representation.

Fig. 5 is the circuit diagram of the utility model LED lamp bar.

Identifier declaration among the figure: LED fluorescent tube 1, heat dissipating housing 101, diffuser 102, draw-in groove 103, plastic cover 104, binding post 105, fluorescence lamp bracket 2, installation portion 201, starter 202, electric ballast 203, LED lamp bar 3, LED4, bridge rectifier module 5.

The specific embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

See also shown in Figure 1, the utility model is installed in the existing fluorescent lamp disc apparatus, it is mainly used in the replacement traditional fluorescent lamp tube, existing fluorescent lamp device mainly comprises fluorescence lamp bracket 2, be arranged in the starter 202 and the electric ballast 203 of fluorescence lamp bracket 2, the two ends of fluorescence lamp bracket 2 are respectively arranged with metal installation portion 201, and it is mainly used in fixed L ED fluorescent tube 1, and said here LED fluorescent tube 1 can manufacture different sizes according to different needs.

See also Fig. 2, Fig. 2 is the perspective view of the utility model LED fluorescent tube 1.LED fluorescent tube 1 mainly comprises heat dissipating housing 101 and diffuser 102 in the utility model, here heat dissipating housing 101 and diffuser 102 are circular arc, the two is combined to round tubular, and diffuser 102 corresponding angles are more bigger or identical than heat dissipating housing 101, and its corresponding angle is generally less than 230 degree.Heat dissipating housing 101 forms for the manufacturing of metal aluminium in addition, and it has good heat-conducting, and wall is provided with strip-shaped clamp groove 103 along axis to direction within it, can LED lamp bar 3 is fixing by this draw-in groove 103; Diffuser 102 is fixed in the lower end of heat dissipating housing 101, combines closely between the two, and diffuser 102 is made for the good transparent light guide material of light transmission, so that the light that LED4 produces can penetrate by diffuser 102.And LED fluorescent tube 1 two ends also are provided with binding post 105 respectively by plastic cover 104 sealings on the plastic cover 104, and this binding post 105 is electrically connected with the LED lamp bar 3 of LED fluorescent tube 1 inside.

As shown in Figure 3, expression is the cutaway view of LED fluorescent tube 1.Be equipped with LED lamp bar 3 in the heat dissipating housing 101 inwall draw-in grooves 103 among the figure, this LED lamp bar 3 is a strip.As shown in Figure 4, this LED lamp bar 3 by pcb board or MCPCB plate and be welded on pcb board or the MCPCB plate on LED form, can weld a plurality of LED4s on wherein said pcb board or the MCPCB plate here, and these LED4 are and are connected in series, wherein according to the size of LED fluorescent tube 1 and the difference of LED power, the quantity of series LED is also inequality.On pcb board or MCPCB plate, also be welded with a protection electric capacity and a bridge rectifier module 5 in addition; LED parallel connection after wherein protecting electric capacity and connecting; bridge rectifier module 5 is then carried out rectification to the electric current by electric ballast 203, directly makes the LED4 conducting on the LED lamp bar 3 then.

More than be description, circuit theory of the present utility model be described further below in conjunction with Fig. 5 to the utility model structural principle.

In fluorescence equipment, electric ballast 203 is connected with source power supply by lead, and wherein electric ballast 3 is the elements that produce induced electromotive force, and it mainly acts on is the increase that suppresses electric current, plays the effect of current limliting.Alternating current through after the processing of electric ballast 3 step-down current limlitings is changing into direct current by bridge rectifier module 5, directly supplies with LED lamp bar 3 then, makes the LED4 conducting of series connection on the LED lamp bar 3.As shown in Figure 5, be the utility model LED lamp bar circuit diagram, wherein said bridge rectifier module 5 includes four diodes, butt joint in twos between these four diodes.Well-known is that alternating current is according to sinusoidal variation, and when alternating current was imported, during the positive half period of input sine wave, two diode current flows obtained positive output in the bridge rectifier module 5; And during the negative half-cycle of input sine wave, two diode current flows in addition because this two is reversal connection (as Fig. 5) by all means, so output still obtains sinusoidal wave just half part, passes through the filter action of capacitor C 1 again, thereby obtain than galvanic current.Therefore the alternating current by the bridge rectifier module directly is converted into direct current, and LED is powered.

In addition; also have a plurality of LED to be cascaded among Fig. 5; as LED1, LED2 ... LED12; then being connected in parallel after these LED series connection with protection capacitor C 1; the quantity of LED is decided according to the gauge size of fluorescent tube and the power of LED in the utility model; the LED fluorescent tube that is similar to T8 type fluorescent tube as employing then needs the LED of 1-18 1W; the LED fluorescent tube that is similar to T5 type fluorescent tube as employing then needs the LED of 1-36 0.5W; the difference of LED quantity wherein, the DC voltage of bridge rectifier module output is also with difference.

LED fluorescent tube described in the utility model can be directly installed on the existing fluorescent lamp disc apparatus and use, and therefore, need not to carry out improvement project, not only economy but also convenient.And the life-span of LED is longer than the fluorescent tube life-span, not only has energy-saving effect, and can not produce the problem of mercury pollution in the discarded fluorescent lamp pipe.

More than a kind of LED fluorescent tube provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. LED fluorescent tube, it is characterized in that: described fluorescent tube (1) is made up of heat dissipating housing (101) and diffuser (102), be provided with the draw-in groove (103) that is used for fixing bar-shaped LED lamp bar (3) in the heat dissipating housing (101), described bar-shaped LED lamp bar (3) by pcb board or MCPCB plate and be welded on pcb board or the MCPCB plate on LED (4) form, these bar-shaped LED lamp bar (3) one ends are welded with a bridge rectifier module (5), come the electric current that electron rectifier (203) is supplied with in the rectification fluorescence lamp bracket (2) by this bridge rectifier module (5).

2. LED fluorescent tube according to claim 1 is characterized in that: series welding is connected to a plurality of LED (4) on described pcb board or the MCPCB plate.

3. LED fluorescent tube according to claim 1 and 2 is characterized in that: be welded with protection electric capacity on described pcb board or the MCPCB plate, LED (4) parallel connection after this is protected electric capacity and connects.

4. LED fluorescent tube according to claim 1 is characterized in that: described heat dissipating housing (101) inwall is provided with reflectorized material.

5. LED fluorescent tube according to claim 1 is characterized in that: described diffuser (102) is the arc of angle less than 230 degree.

6. LED fluorescent tube according to claim 1 is characterized in that: described diffuser (102) is made for the transparent light guide material, and it is fixedly connected on heat dissipating housing (101) bottom or both sides.

7. LED fluorescent tube according to claim 1 is characterized in that: the terminal (105) on described bridge rectifier module (5) and the plastic cover (104) is electrically connected.