CN201368422Y

CN201368422Y - Adjustable lamp tube connector

Info

Publication number: CN201368422Y
Application number: CNU2009200067190U
Authority: CN
Inventors: 郭政雄; 陈宣憓
Original assignee: Energyled Corp
Current assignee: Energyled Corp
Priority date: 2009-03-09
Filing date: 2009-03-09
Publication date: 2009-12-23
Anticipated expiration: 2019-03-09

Abstract

The utility model relates to an adjustable lamp tube connector which is installed on one end of an LED lamp tube and comprises a fixing seat, a rotating piece, an electrical connecting component and a pair of pins, wherein the fixing seat is provided with a plurality of punch holes, the rotating piece and the electrical connecting component are respectively arranged at the front end and back end of the fixing seat, the electrical connecting component is provided with a plurality of fixing holes corresponding to the punch holes of the fixing seat, the pair of pins are arranged in part of the punch holes of the rotating piece and the fixing seat relatively in a penetrating way and arranged in part of the fixing holes of the electrical connecting component; and the rotating piece can rotate with respect to the punch holes of the fixing holes in a selecting way, so that the pair of pins are assembled and positioned in part of punch holes and part of fixing holes, and the place of arranging the pair of the pins is changed so as to changed the position of different places, therefore users can adjust the irradiation angle of emitted lights of the LED lamp tube so as to increase the convenience of the LED lamp tube in use.

Description

Adjustable lamp tube joint

Technical field

The utility model is about a kind of lamp tube joint, is meant a kind of adjustable lamp tube joint especially.

Background technology

Lighting apparatus is indispensable among the human lives, along with the development of technology, have better illumination and more the illuminations of power saving also arise at the historic moment gradually.The most normal lighting source that uses is LED at present.LED have power saving, durable, do not generate heat and multiple advantages such as environmental protection, the light source that is produced is a cold light source, have long service life, low power consumption and do not have the characteristics that produce ultraviolet radiation, therefore extensively be applied to each generic category, especially advocating the advocating under the demand of " carbon reduction ", the power saving superiority of LED just begins to come into one's own.In fossil energy shortage and environmental consciousness surging today day by day, kind has been the focus of all circles' concern with light emitting diode.

The made light fixture of LED has the development trend that progressively replaces conventional bulb in recent years.Yet in order to be common to existing light fixture, with the demand in transition period that is connected in response at present new old product, therefore some LED Related products are the structure kenels that are designed to meet existing light fixture at present, and for example, the LED fluorescent tube is quite typical a kind of product.On the outward appearance kenel of LED fluorescent tube is to copy traditional tube, the conducting terminal that has a light-transmitting tube body and be located at these light-transmitting tube body two ends, can be common to by this on the lamp socket that traditional tube uses, described LED fluorescent tube still has difference with traditional tube, now in response to LED being the luminous uneven shortcoming of divergence of beam that exists of point-like, therefore the LED tube inner wall must be provided with the light guide structure of light, to be guided diffusion with the light that LED was throwed, so make the irradiating angle of the source light of LED fluorescent tube be confined to a certain scope, can't use the light source of LED fluorescent tube according to user's demand, so the inconvenience that will cause the LED fluorescent tube to use.If can adjust LED fluorescent tube irradiating angle freely, then will improve the problem that the irradiating angle of LED lamp tube light source light is limited to.

Therefore the utility model provides a kind of adjustable lamp tube joint, and it is when being installed in the LED fluorescent tube, can adjust the pin position of LED fluorescent tube, and can adjust the irradiating angle of the source light of LED fluorescent tube, to increase the convenience that the LED fluorescent tube uses.

Summary of the invention

One of the purpose of this utility model, be to provide a kind of adjustable lamp tube joint, it is by by the plurality of fixed hole on the electrical connection module, to allow the user can comply with the required pin that is provided with in diverse location, so can allow the user adjust the irradiating angle of LED fluorescent tube bright dipping, to increase the convenience that the LED fluorescent tube uses.

Be achieved through the following technical solutions for realizing the purpose of this utility model and solving its technical problem.

A kind of adjustable lamp tube joint described in the utility model, it is an end that is installed in a LED fluorescent tube, this adjustable lamp tube joint comprises:

One holder is provided with a plurality of perforation;

One revolving part is located at the front end of this holder;

One electrical connection module is located at the rear end of this holder and is had the plurality of fixed hole, and those fixing holes are corresponding to those perforation of this holder; And

A pair of pin relatively is arranged in the perforation of the part of this revolving part and this holder, and is located at the fixing hole of the part of this electrical connection module;

Wherein, this revolving part is with respect to those electing property of perforation ground rotation of this holder, and this relatively assembles the fixing hole of the perforation that is positioned part and part to pin, and changes this to the set position of pin, to change the location of diverse location.

The beneficial effects of the utility model are: by being rotated by revolving part of the present utility model those electing property of perforation ground with respect to holder, and this relatively assembles the perforation and fixing hole partly that is positioned part to pin, can change this to the set position of pin, to change the location of diverse location, so can allow the user adjust the irradiating angle of LED fluorescent tube bright dipping, to increase the convenience that the LED fluorescent tube uses.

Description of drawings

Figure 1A is mounted on the stereogram of LED fluorescent tube for the adjustable lamp tube joint of the utility model preferred embodiment;

Figure 1B is mounted on the exploded view of LED fluorescent tube for the adjustable lamp tube joint of the utility model preferred embodiment;

Fig. 2 is the stereogram of the adjustable lamp tube joint of the utility model preferred embodiment;

Fig. 3 A is the exploded view of the adjustable lamp tube joint of the utility model preferred embodiment;

Fig. 3 B is the exploded view of the adjustable lamp tube joint different visual angles of the utility model preferred embodiment;

Fig. 4 is the schematic diagram of the adjustment pin position of the utility model preferred embodiment;

Fig. 5 is the schematic diagram that the interchange switched power supply of the LED fluorescent tube of another preferred embodiment of the present utility model is arranged at the LED fluorescent tube;

Fig. 6 is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model; And

Fig. 7 is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model.

[figure number simple declaration]

1 LED fluorescent tube, 183 pins

The 183a first pin 183b second pin

183c the 3rd pin 183d the 4th pin

2 exchange switched power supply 210 first input rectifying/filtering circuits

220 power-switching circuits, 221 second input rectifying/filtering circuits

222 transformers, 223 commutation circuits

225 electrostatic discharge protection circuits, 226 output rectifying/filtering circuits

227 circuit for detecting, 228 feedback control circuits

230 load AC _IN1First AC-input voltage

AC _IN2Second AC-input voltage, 3 adjustable lamp tube joints

32 holders, 33 electrical connection modules

321 holding parts, 322 grooves

324 perforation, 326 first air-vents

34 first electrical connectors, 342 fixing holes

344 electrical connection sections, 36 second electrical connectors

362 fixing holes, 364 electrical connection sections

38 revolving parts 381 are adjusted the location division

382 first locating holes, 383 second locating holes

384 second air-vents

The specific embodiment

Further understand and understanding for making architectural feature of the present utility model and the effect reached had, in order to preferred embodiment and cooperate detailed explanation, be described as follows:

See also Figure 1A and Figure 1B; It is stereogram and exploded view that the adjustable lamp tube joint of the utility model preferred embodiment is mounted on the LED fluorescent tube.As shown in the figure, adjustable lamp tube joint 3 of the present utility model is installed in an end of LED fluorescent tube 1, Figure 1A only is provided with the schematic diagram of the adjustable lamp tube joint 3 of the utility model for an end of LED fluorescent tube 1, when reality is used, be that the adjustable lamp tube joint 3 of the utility model must all be set in the both ends of LED fluorescent tube 1.

See also Fig. 2, Fig. 3 A and Fig. 3 B; It is the stereogram of adjustable lamp tube joint 3 of the utility model preferred embodiment and the exploded view of different visual angles.As shown in the figure, the adjustable lamp tube joint 3 of the utility model comprises a holder 32, an electrical connection module 33, a revolving part 38 and a pair of pin 183, holder 32 is provided with a plurality of perforation 324, and electrical connection module 33 then includes one first electrical connector 34 and one second electrical connector 36.First electrical connector 34 is located at the rear end of holder 32 and is had plurality of fixed hole 342, and those fixing holes 342 are with respect to those perforation 324; Those fixing holes 362 that second electrical connector 36 is located at the rear end of holder 32 equally and is had plurality of fixed hole 362, the second electrical connectors 36 are equally with respect to those perforation 324.In addition, the rear end of holder 32 is provided with a holding part 321, to be used to be provided with electrical connection module 33.

Accept above-mentionedly, revolving part 38 is located at the front end of holder 32, and the front end of holder 32 is provided with a groove 322, is located in the groove 322 for revolving part 38, is arranged at the convenience of holder 32 to increase revolving part 38, and can makes revolving part 38 rotate in holder 32.Revolving part 38 is provided with one and adjusts location division 381, adjusts location division 381 and is provided with one first locating hole 382 and one second locating hole, 383, the first locating holes 382 and second locating hole 383 and optionally bores a hole 324 relative with those of holder 32.

Consult Fig. 3 A and Fig. 3 B again, of the present utility model this includes one first pin 183a and one second pin 183b to pin 183, the first pin 183a and the second pin 183b are arranged in first locating hole 382 and second locating hole 383 of revolving part 38 respectively, with the perforation 324 of the part that further relatively is arranged in holder 32 and the

fixing hole

342 and 362 of the part of electrical connection module 33, promptly the first pin 183a is arranged in first locating hole 382 of revolving part 38, and the one that relatively wears holder 32 front ends bores a hole 324, and relatively be located at one of fixing hole 342 of first electrical connector 34, the second pin 183b then is arranged in second locating hole 383 of revolving part 38, and relatively be arranged in the one perforation 324 of holder 32 front ends, and relatively be located at one of fixing hole 362 of second electrical connector 36.

Because, the first pin 183a of the present utility model and the second pin 183b see through first locating hole 382 and second locating hole 383 of revolving part 38, and only can be arranged at the fixing hole 362 of the one of the fixing hole 342 of one of first electrical connector 34 and second electrical connector 36 respectively, so can avoid the user to take place the first pin 183a and the second pin 183b connect and establish wrong situation.In addition, revolving part 38 of the present utility model has dust reduction capability, enters lamp tube joint inside with the dust of avoiding external environment condition, and the service life of improving lamp tube joint of the present utility model.In addition, first electrical connector 34 of the present utility model and second electrical connector 36 have an electrical connection section 344 and an electrical connection section 364 respectively, electrical connection section 344 is electrically connected with the circuit (figure does not show) of electrical connection section 364 with LED fluorescent tube 1, by joining with circuit and external power source, and provide LED fluorescent tube 1 required power supply with LED fluorescent tube 1 by electrical connection section 344,364.

From the above, because first electrical connector 34 and second electrical connector 36 of electrical connection module 33 of the present utility model have plurality of

fixed hole

342 and 362 respectively, therefore one of fixing hole 362 of user's one of fixing hole 342 that the first pin 183a and the second pin 183b can be arranged in first electrical connector 34 respectively and second electrical connector 36, so the user can freely adjust the position that is provided with of the first pin 183a and the second pin 183b according to demand, by the position that is provided with by the change first pin 183a and the second pin 183b, be can be when LED fluorescent tube 1 is mounted on a lamp socket, allow the irradiating angle of LED fluorescent tube 1 bright dipping change, so can allow the user adjust the irradiating angle of LED fluorescent tube 1 bright dipping, to increase the convenience that LED fluorescent tube 1 uses.

Consult Fig. 3 A again, the embodiment of the utility model Fig. 3 A only is provided with four perforation 324 with holder 32, and electrical connection module 33 has four

fixing holes

342 and 362 and explains, and it also can be provided with the perforation 342 and fixing

hole

342 and 362 of varying number according to different demands.First locating hole 382 of Fig. 3 A and second locating hole 383 are to be that the center of circle is horizontally disposed with revolving part 38 centers, after two pin 183a like this and 183b are inserted in first and second locating

hole

382 and 383, both spacings are identical with the spacing of the pin of general prior art fluorescent tube, so that LED fluorescent tube 1 can use in the fluorescent tube lamp socket of general prior art.In addition, the position of the perforation 324 on the holder 32 of the present utility model is that the center with holder 32 is the symmetrical manner setting, is the symmetrical manner setting and the position of first and second locating hole 382 on the revolving

part

38 and 383 is centers with revolving part 38.In the time of so just can making revolving part 38 rotate different angles, first and second locating hole 382 on the revolving part 38 still can be relative with wherein two perforation 324 of holder 32 with 383.

In addition, the utility model is provided with one first air-vent 326 in the center of holder 32, the center of revolving part 38 also is provided with second air-vent 384 with respect to first air-vent 326, the hot gas that LED fluorescent tube 1 is produced is scurried out via second air-vent 384 of revolving part 38 from first air-vent 326 of holder 32, to increase radiating effect of the present utility model.

See also Fig. 4, it is a schematic diagram of adjusting the pin position for the utility model preferred embodiment.The utility model is adjusted the mode of pin 183a and 183b, mainly be to utilize revolving part 38 those perforation 324 electing property ground rotations with respect to holder 32, with the position of selecting pin 183a and 183b to be provided with, promptly select those corresponding perforation 324, again pin 183a and 183b assembling are positioned selected those perforation 324 afterwards, so pin 183a and 183b promptly can be through selected those perforation 324, and be fixed in those

fixing holes

342 and 362 of selected those 324 pairing electrical connection modules 33 of boring a hole, so can change the position that pin 183a and 183b are arranged at electrical connection module 33, to change the location of diverse location.Shown in Fig. 4 and Fig. 3 A, by by above-mentioned mode, pin 183a and 183b are provided with the position and can change to position shown in Figure 4 from the position shown in Fig. 3 A, the embodiment of Fig. 4 is that to rotate 90 degree with revolving part 38 be that example explains, if increase the perforation 324 of holder 32 and the quantity of the fixing hole of electrical connection module 33, then can allow revolving part 38 rotational angles that more more options are arranged.

In addition, the utility model further is provided for one of LED lamp tube structure and exchanges switched power supply, seeing also Fig. 5 and Fig. 6, is the schematic diagram that the interchange switched power supply of the LED lamp tube structure of a preferred embodiment of the present utility model is arranged at the LED lamp tube structure.As shown in the figure, interchange switched power supply 2 of the present utility model can be installed in LED lamp tube structure 1 inside, and one first pin 183a, the one second pin 183b, one the 3rd pin 183c and one the 4th pin 183d that connect LED lamp tube structure 1 respectively, and the outside one first AC-input voltage AC that provides to LED lamp tube structure 1 both sides is provided _IN1With one second AC-input voltage A _CIN2,, and light the light emitting diode of LED lamp tube structure 1 inside with the generation output voltage.

Seeing also Fig. 6, is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model.As shown in the figure, the utility model more provides one to exchange switched power supply 2, exchanges switched power supply 2 and can be arranged in the LED lamp tube structure, can avoid the situation of the light emitting source generation flicker of LED lamp tube structure.Interchange switched power supply 2 of the present utility model comprises one first input rectifying/filtering circuit 210 and a power-switching circuit 220, and is used to receive one first AC-input voltage AC _IN1With one second AC-input voltage AC _IN2, to produce output voltage to a load 230.The load 230 of present embodiment is at least one light emitting diode.

First input rectifying/filtering circuit 210 receives the first AC-input voltage AC _IN1, and rectification/filtering first AC-input voltage AC _IN1, and produce first rectification/filtering voltage.Power-switching circuit 220 has one second input rectifying/filtering circuit 221, is used to receive the second AC-input voltage AC _IN2, and then rectification/filtering second AC-input voltage AC _IN2, to produce second rectification/filtering voltage.A first above-mentioned input rectifying/filtering circuit 210 and a preferred embodiment of second input rectifying/filtering circuit 221 are bridge rectifier/filter circuit.

Consult Fig. 6 again, power-switching circuit 220 more comprises a transformer 222 and and switches circuit 23, transformer 222 is used for the first rectification/filtering voltage of first input rectifying/filtering circuit 210 that coupled according to power-switching circuit 220 and the second rectification/filtering voltage of second input rectifying/filtering circuit 221, and produces output voltage.Commutation circuit 223 couples transformer 222, and it is used to produce one and switches signal, to control this transformer 222, promptly utilizes and switches signal switching transformer 222, to adjust the output voltage that transformer 222 is provided.Second rectification of first rectification of the first input rectifying/filtering circuit 210/filtering voltage and second input rectifying/filtering circuit 221/filtering voltage can provide a supply voltage to commutation circuit 223, with the required power supply of supply commutation circuit 223.One preferred embodiment of commutation circuit 223 is a pulse width modulation (Pulse WidthModulation, PWM) circuit.

In addition; power-switching circuit 220 of the present utility model more comprises an electrostatic discharge protection circuit 225; the one end is coupled to first input rectifying/filtering circuit 210 and second input rectifying/filtering circuit 221; and the other end is coupled to transformer 222; electrostatic discharge protection circuit 225 is to be used for transformer 222 is made electrostatic defending, avoids being subjected to the destruction of static with protection transformer 222.In addition, electrostatic discharge protection circuit 225 also couples commutation circuit 223, to be used for that equally commutation circuit 223 is made electrostatic defending, with protection commutation circuit 223.The utility model is under the design of setting up electrostatic discharge protection circuit 225, first input rectifying/filtering circuit 210 and second input rectifying/filtering circuit 221 are via electrostatic discharge protection circuit 225, and provide voltage behind the filter rectification to the primary side of transformer 222, make transformer 222 produce output voltage at its secondary side.Power-switching circuit 220 of the present utility model is an isolated power-switching circuit, its be since power-switching circuit 220 of the present utility model by providing output voltage by transformer 222, and the primary side of transformer 222 and secondary side are for being separated, the output voltage that voltage and secondary side produced that promptly separates primary side and received, it is for separating the design of high-pressure side and low-pressure end, so dangerous reduction relatively, use the common people to produce the situation of electric shock and can not cause, avoid the purpose of using the common people to cause danger to reach.

Consult Fig. 6 again, the output of the transformer 222 of power-switching circuit 220 of the present utility model more couples an output rectifying/filtering circuit 226, and it is used for the output voltage of rectification/filter transformer 222, to provide more stable output voltage to load 230.The utility model is for effective operating state in response to load 230, and adaptive automatic adjustment output voltage, to provide suitable output voltage to load 230, so power-switching circuit of the present utility model 220 more comprises a circuit for detecting 227 and a feedback control circuit 228.Circuit for detecting 227 is used to detect the operating state of load 230, such as circuit for detecting 227 promptly detects a state of side LED load 230, and a corresponding detection signal, above-mentioned state, for example luminosity of LED load 230 of producing.Feedback control circuit 228 is used for the corresponding back coupling control signal that produces according to detection signal, produce the switching signal with control commutation circuit 223, be that commutation circuit 223 is according to feedbacking control signal generation switching signal, just suitable modulation switches the pulse width of signal, with suitable control voltage device 222, so power-switching circuit 220 can be adjusted the size of output voltage adaptively according to the operating state of LED load 230.

Accepting above-mentionedly, below is to describe the utility model for example in detail how to utilize circuit for detecting 227 and feedback control circuit 228, and control commutation circuit 223, with the accommodation output voltage.If the luminosity deficiency of circuit for detecting 227 detecting LED loads 230, then circuit for detecting 227 can correspondingly produce detection signal, feedback control circuit 228 then produces to feedback according to detection signal controls signal, so commutation circuit 223 can increase the work period (Duty) of switching signal according to back coupling control signal, improve output voltage with control transformer 222, and then improve the luminosity of LED load 230.On the contrary, if the luminance of circuit for detecting 227 detecting LED loads 230 is spent by force, 228 of feedback control circuits can produce corresponding back coupling control signal according to the detection signal that circuit for detecting 227 is produced, shorten the work period of switching signal with control commutation circuit 223, reduce output voltage with control transformer 222, and then reduce the luminosity of LED load 230.

In addition, the utility model passes through by circuit for detecting 227 and feedback control circuit 228, but also the output current of control transformer 222 is a fixed value, so can reach the characteristic that electric current is decided in voltage stabilizing.Because power supply unit of the present utility model can reach the characteristic of voltage stabilizing, and output voltage can be along with the first AC-input voltage AC _IN1With one second AC-input voltage AC _IN2Change and change, so can provide stable output voltage to LED load 230, so LED load 230 promptly can not produce the situation of flicker, and the common people are provided comfortable lighting source, easily produces sense of fatigue with the eyes of avoiding the common people.

Seeing also Fig. 7, is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model.See also Fig. 6, as shown in the figure, this embodiment is different from an embodiment part and is that this embodiment does not utilize circuit for detecting 227, the feedback control circuit 228 of this embodiment couples the output of power-switching circuit 220, to be used for producing back coupling control signal, produce with control commutation circuit 223 and switch signal according to output voltage.The main difference of this embodiment and a last embodiment is that this embodiment directly utilizes feedback control circuit 228 according to output voltage, and control commutation circuit 223, be the pulse width of commutation circuit 223, and then control transformer 222 is to adjust the size of output voltage according to output voltage adjustment switching signal.If output voltage is less, commutation circuit 223 promptly can increase the work period of switching signal according to the back coupling control signal of feedback control circuit 228, increases output voltage with control transformer 222.On the contrary, if output voltage is excessive, 23 of commutation circuits can reduce output voltage with control transformer 222 according to feedbacking the control work period that signal reduces the switching signal.

In sum, the utility model relates to a kind of adjustable lamp tube joint, it comprises holder, revolving part, electrical connection module and a pair of pin, holder is provided with a plurality of perforation, and front end and rear end are provided with revolving part and electrical connection module respectively, electrical connection module also has the plurality of fixed hole, those fixing holes are with respect to those perforation of holder, this relatively is arranged in the perforation of the part of revolving part and holder to pin, and be located at the fixing hole of the part of electrical connection module respectively, by rotating by revolving part those electing property of perforation ground with respect to holder, and this relatively assembles the perforation and fixing hole partly that is positioned part to pin, can change this to the set position of pin, to change the location of diverse location.So can allow the user comply with the required position that this is set pin, and allow the user can adjust the irradiating angle of LED fluorescent tube bright dipping, to increase the convenience that the LED fluorescent tube uses.

In sum, it only is a preferred embodiment of the present utility model, be not to be used for limiting the scope that the utility model is implemented, all according to impartial for it variation of the described shape of the utility model claim scope, structure, feature and spiritual institute and modification, all should be included in the claim scope of the present utility model.

Claims

1. an adjustable lamp tube joint is characterized in that, it is an end that is installed in a LED fluorescent tube, and this adjustable lamp tube joint comprises:

One holder is provided with a plurality of perforation;

One revolving part is located at the front end of this holder, and this revolving part is provided with one and adjusts the location division;

A pair of pin relatively is arranged in the perforation of the part of the adjustment location division of this revolving part and this holder, and is located at the fixing hole of the part of this electrical connection module;

2. adjustable lamp tube joint according to claim 1 is characterized in that, wherein this holder front end is provided with a groove, and this revolving part is located in this groove, and this holder rear end is provided with a holding part, and this electrical connection module is located at this holding part.

3. adjustable lamp tube joint according to claim 1, it is characterized in that, wherein this adjustment location division has one first locating hole and one second locating hole, the position of this first locating hole and this second locating hole, be that center with this revolving part is symmetry, and this first locating hole and this second locating hole are optionally corresponding to those perforation, and this is arranged in this first locating hole and this second locating hole respectively to pin.

4. adjustable lamp tube joint according to claim 1 is characterized in that, wherein this electrical connection module comprises:

One first electrical connector is located at the rear end of this holder, and has those fixing holes, and those fixing holes are bored a hole with respect to those; And

One second electrical connector be located at the rear end of this holder, and adjacent to this first electrical connector, this second electrical connector has those fixing holes, and those fixing holes are bored a hole with respect to those.

5. adjustable lamp tube joint according to claim 4 is characterized in that, wherein this first electrical connector and this second electrical connector have an electrical connection section respectively, and a circuit of this electrical connection section and this LED fluorescent tube is electrically connected.

6. adjustable lamp tube joint according to claim 1 is characterized in that, the position of those perforation of this holder wherein is symmetry with the center of this holder.

7. adjustable lamp tube joint according to claim 1 is characterized in that wherein this holder has at least four perforation, and this electrical connection module has at least four fixing holes accordingly.

8. adjustable lamp tube joint according to claim 1, it is characterized in that, wherein this LED fluorescent tube more comprises an interchange switched power supply, it connects two pins at the two ends of this LED fluorescent tube respectively, and receive one first AC-input voltage and one second AC-input voltage, this interchange switched power supply includes:

One first input rectifying/filtering circuit, this first AC-input voltage of its rectification/filtering produces first rectification/filtering voltage; And

One power-switching circuit, it is coupled to this first input rectifying/filtering circuit and has one second input rectifying/filtering circuit, this this second AC-input voltage of second input rectifying/filtering circuit rectification/filtering, and produce second rectification/filtering voltage, this power-switching circuit is according to this first rectification/filtering voltage and this second rectification/filtering voltage, and produces an output voltage.

9. adjustable lamp tube joint according to claim 8 is characterized in that wherein this power-switching circuit couples at least one LED, and to provide this output voltage to this LED, this power-switching circuit comprises:

One transformer, it is according to this first rectification/filtering voltage and this second rectification/filtering voltage, and produces this output voltage; And

One switches circuit, and it couples this transformer, and produces a switching signal, to control this transformer.

10. adjustable lamp tube joint according to claim 9 is characterized in that, wherein this power-switching circuit more comprises:

One circuit for detecting, it detects the luminosity state of this LED, and the corresponding detection signal that produces; And

One feedback control circuit, it produces a back coupling control signal according to this detection signal, produces this switching signal to control this commutation circuit.