CN101968175B - LED lamp tube - Google Patents
LED lamp tube Download PDFInfo
- Publication number
- CN101968175B CN101968175B CN2010105228213A CN201010522821A CN101968175B CN 101968175 B CN101968175 B CN 101968175B CN 2010105228213 A CN2010105228213 A CN 2010105228213A CN 201010522821 A CN201010522821 A CN 201010522821A CN 101968175 B CN101968175 B CN 101968175B
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- circuit board
- light
- tube body
- fluorescent tube
- arc bar
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Abstract
An LED lamp tube comprises a tube body, a circuit board arranged in the tube body, an LED module arranged on the circuit board, and electric plug-in components arranged at two ends of the tube body, wherein the tube body comprises an outer tube body and an inner arc-shaped strip, the outer tube body is an integrally formed tube with a hollow cavity, the back surface of the inner arc-shaped strip is attached to the inner wall of the outer tube body, and the front surface of the inner arc-shaped strip is provided with at least one group of supporting and positioning ribs consisting of two shin ribs along the length direction; the circuit board is in a strip shape, at least one group of light emitting diode modules are fixedly arranged on the front surface of the circuit board, and two sides of the circuit board are clamped by two shin ribs of the supporting and positioning ribs respectively so as to be fixed on the inner arc-shaped strip; the fluorescent tube has a firm assembly structure, is not easy to deform by heating, can achieve the integral luminescence of the tube body like the traditional fluorescent tube, and has a more excellent illumination effect.
Description
Technical field
The present invention relates to a kind of LED lamp, relate in particular to a kind of LED fluorescent tube.
Background technology
Fluorescent lamp is the lighting that people use always, and the LED fluorescent tube replaces traditional fluorescent lamp gradually because of advantages such as its environmental protection, energy-conservation, life-span length, efficient height in recent years, becomes the illuminating lamp tube of main flow.
Present LED light on the market, because of its architectural characteristic, and consider the characteristics that the LED caloric value is higher relatively, common assembling scheme, be that the LED wafer is installed on the circuit board, again circuit board is arranged in the body, standard inserted terminal by the body two ends, can be plugged in lamp tube socket to carry out illumination work, when LED is luminous, the heat that produces is delivered on the body by circuit board, is distributed by body again, and its middle tube body has had functions such as positive transparent light guide, internal fixation circuit board and heat radiation concurrently.And according to above-mentioned requirement, the pipe structure of LED fluorescent tube is broadly divided into two kinds: a kind of is the plastic cement pipe fitting, the pipe fitting front is transparent surface, and the inner card device, circuit board is when LED is luminous, light shines out by transparent surface, and heat then passes to pipe fitting by circuit board, is shed by pipe fitting; Another kind of then be the structure that the plastic tube body back fixation has aluminium section bar, circuit board is installed on the aluminium section bar, and the light that LED sends appears by plastic cement pipe front, heat then can be delivered on the aluminium section bar, shed by aluminium section bar, with by aluminium section bar, reach more better heat radiating effect.
The inserted terminal that the LED lamp tube ends is provided with, fluorescent tube can be fixed in the standard lamp socket, and obtain power supply by lamp socket, therefore under the use state, the LED fluorescent tube is for being that horizontal dress is fixed between two lamp sockets, only the body two ends are subjected to the lamp socket fixed support, make the body middle part influenced by deadweight, have a downward stress; Under this state, for first kind of LED fluorescent tube in the said structure scheme, in its course of work, the body of plastic cement is heated and can softens gradually, and in conjunction with the gravity effect, the body middle part is understood influenced and produced trickle deformation, thereby fluorescent tube is after long-term the use, middle one section can obviously be bent downwardly, and influences the good looking appearance of fluorescent tube, uses also no longer safe; And for second kind of LED fluorescent tube in the said structure scheme, because the effect of the aluminium section bar of body back institute combination, except possessing better radiating effect, under the work heating status, the support of back aluminium section bar is arranged, and body also is difficult for temperature distortion, can keep comparatively long-term good looking appearance, mounting structure is also more firm, yet this type of LED fluorescent tube can increase manufacturing cost greatly because use more aluminium, causes valuable product, lack competitiveness in market, and, fix circuit board by aluminium section bar, can make circuit board be positioned at the front of the more close pipe in position of body, thereby can reduce the irradiating angle of fluorescent tube, lighting effect descends.
As mentioned above, the LED fluorescent tube is that the inserted terminal by the body two ends is installed on lamp socket, to fix and work to take power, the metal connection terminal that inserted terminal has, must match with the interface that lamp socket has, normally power taking, this just needs inserted terminal must assemble accurately, and possesses enough intensity, assurance fixedly secures with body, can not rotate or displacement present basic scheme under certain torsion or external force, all be to adopt viscose glue that inserted terminal is bonded in the body end, the shortcoming of this mode is, cling fixing after, just non-dismountable, otherwise can cause the destruction of annexation, and the heat that produces in LED lamp works process can make viscose glue softening, viscous force descends, and inserted terminal is come off.
In addition, the LED fluorescent tube is applied in the on-the-spot illumination, generally there is civil power to change so that LED is powered through direct current, civil power is the unsettled situation of the frequency of occurrences in some cases, will influence the current value by the LED wafer, if excessive through the electric current of LED wafer, then can cause permanent light decay to the LED wafer, cause the permanent reduction of LED lamp luminescence brightness, do not satisfy the intensity of illumination requirement of needs.
Summary of the invention
At the problems referred to above, the invention provides the more outstanding LED light pipe of a kind of effect, possess firm assembly structure, be difficult for temperature distortion, and can form as traditional fluorescent tube to reach body integral body luminous, to obtain more outstanding lighting effect.
The present invention for the technical scheme that adopts for its technical problem of solution is:
One outer tube body is the one-body molded pipe of a hollow chamber, and its inwall is provided with the reinforcement integrally formed with this outer tube in the extending length direction;
One arc bar, the inwall of this arc bar back side and described outer tube body is fitted, its front is provided with the support positioning rib of two groups of position symmetries along its length, every group is supported positioning rib and grips a described circuit board, making two circuit boards be "/" type distributes, be provided with the rib that is shaped in arc bar front between two groups of support positioning ribs, the rib two ends are provided with lockhole;
Be installed on described circuit board between the body arc bar, this circuit board is provided with the light-emittingdiode module;
Be installed on the electrical connecting element at body two ends;
Wherein:
Described circuit board is elongated, fixedly installs at least one group of light-emittingdiode module on its front, and the circuit board both sides are respectively by supporting two shin rib clampings of positioning rib, to be fixed on the arc bar;
Described electrical grafting group has two protruding inserted terminals that can be plugged on the traditional fluorescent lamp socket, and wherein two protruding inserted terminals are short-circuit condition Lian Jie ﹔
Described reinforcement be used for clamping arc Tiao ﹔ and
Described electrical connecting element is locked by the lockhole of bolt and its respective side.
Above-mentioned arc bar is provided with the support positioning rib of two groups of position symmetries, and every group is supported positioning rib and grip a described circuit board, makes two circuit boards be "/" type and distributes.
Leave the space between two groups of above-mentioned support positioning ribs, folder is established rib is fixedly arranged in this space.
Above-mentioned rib two ends are provided with lockhole, and described electrical grafting group is locked by the lockhole of bolt and its respective side.
Being provided with along its length of above-mentioned outer tube body inwall is one-body molded, and in order to support the reinforcement of the described arc bar in location.
Has integrated wave striped on the above-mentioned outer tube body.
Above-mentioned light-emittingdiode module comprises the light-emitting diodes body unit of some series connection; The light-emittingdiode module that described circuit board is provided with one group of light-emittingdiode module or is in parallel more than two groups.
Above-mentioned circuit board is provided with the Wheatstone bridge rectifier that connects the light-emittingdiode module, and connects the Wheatstone bridge rectifier and connect with the constant-current source of current limliting with the light-emittingdiode module.
Above-mentioned constant-current source comprises a constant current performance element and a constant current driving unit.
Above-mentioned constant current performance element comprises a N-channel MOS pipe, this metal-oxide-semiconductor grid be connected with the Wheatstone bridge rectifier by voltage feedback resistance, its drain electrode is connected with the light-emittingdiode module, its source electrode is connected with constant current driving unit; Described constant current driving unit comprises a current feedback resistance and a NPN triode, and this triode actively connects the source electrode of metal-oxide-semiconductor, and by the current feedback resistance eutral grounding, its colelctor electrode connects the grid of metal-oxide-semiconductor.
The invention has the beneficial effects as follows: a kind of LED fluorescent tube provided by the present invention, the body formula that is formed in one, and can be used for fixing circuit board with the support positioning rib that arranges in the body, can adopt plastic material to guarantee cheaply simultaneously, make body possess enough intensity, structure is more solid and reliable, and is guaranteeing to be difficult under the lamp works febrile state producing distortion; And, by supporting positioning rib circuit board is fixed in rear side in the body, in conjunction with integrate shaped type body of the present invention, can make fluorescent tube possess bigger lighting angle, as traditional fluorescent tube, luminous for 360 ° of integral body during work, obtain better lighting effect; And the present invention adopts the fixedly structure of electrically grafting group of body two ends of lockhole, makes electrical grafting group possess and enough deals with the intensity of assembling and using torsion, and guarantee that it can not rotate or displacement because being subjected to external force, structural life-time is strengthened; In addition, in conjunction with light-emittingdiode module provided by the present invention, when guaranteeing illuminating effect, prevent that LED from producing permanent light decay, can possess desirable radiating effect and more superior service life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is further specified:
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the internal structure schematic diagram of first kind of embodiment body of the present invention;
Fig. 3 is the internal structure schematic diagram of second kind of embodiment body of the present invention;
Fig. 4 is the fractionation structural representation of second kind of embodiment of the present invention;
Fig. 5 is circuit block diagram of the present invention;
Fig. 6 is the circuit theory diagrams of preferred embodiment of the present invention;
Fig. 7 is the distortion of preferred embodiment circuit theory diagrams of the present invention;
Fig. 8 is the schematic diagram of second kind of embodiment of circuit of the present invention;
Fig. 9 is the schematic diagram of the third embodiment of circuit of the present invention;
Figure 10 is the schematic diagram of the 4th kind of embodiment of circuit of the present invention.
The specific embodiment
A kind of LED fluorescent tube as shown in Figures 1 and 2, comprise body 1, be installed on the circuit board 2 in the body 1, be arranged at the light-emittingdiode module 3 on the circuit board 2, body 1 two ends are provided with electrical grafting group 11, and wherein circuit board 2 connects this electrical grafting group 4, two pin structures of this electrical grafting group employing standard, have two protruding inserted terminals 41, wherein two protruding inserted terminals 41 are the short-circuit condition connection, become to insert on the traditional fluorescent lamp socket standard inserted terminal of power taking to connect extraneous power supply.
Body 1 mainly is made up of outer tube body 11 and arc bar 12, wherein has integrated wave striped on outer tube body 11 madial wall for one-body molded pipe outer tube body 11 fronts with hollow chamber, makes it have lens function, with the expansion lighting angle; Then fit with the outer tube body inwall in arc bar 12 back sides, its front is provided with at least one body formed by one group of support positioning rib 13 of being made up of two shin ribs along its length; This circuit board 2 is elongated, fixedly install at least one group of light-emittingdiode module 3 on its front, circuit board 2 both sides are respectively by supporting two shin rib clampings of positioning rib 13, to be fixed on the arc bar 12, overall structure, form arc bar 12 and fix circuit board 2 by supporting positioning rib 13,1 of outer tube body installs and fixes arc bar 12; And it is preferred, outer tube body 11 inwalls are provided with integrated reinforcement 14 along its length, this reinforcement 14 can be used for clamping arc bar 12, play the support positioning action with internal arc strip 12, under this configuration state, the assembling of body 1 internal structure does not all need extra more connecting, and structure comparatively simply reaches rationally, and reinforcement 14 plays the effect of the bulk strength of further reinforcement body 1 simultaneously.
In an embodiment of the present invention, this outer tube body 1 section adopts the PC tubes of material, is characterized in wear-resisting, high temperature resistant; and tough and tensile, light transmittance is good, uses as outer tube body 1; can guarantee the protection to components and parts in managing; and lighting effect is guaranteed, and arc bar 12 can adopt PVC plastic-steel material, and its hardness is enough strong; and it is relatively cheap; as playing fixing circuit board 2, and support the arc bar 12 of body 1 global shape, can guarantee the requirement of strength of using.
As shown in FIG., the position of supporting positioning rib 13 near with outer tube body 11 rear portions, therefore the area of light-emittingdiode module 3 corresponding bodys 1 that is arranged at circuit board 2 fronts is bigger than traditional LED fluorescent tube, thereby the light that sends during light-emittingdiode module 3 work can appear from body 1 more position, and because reflex, only slightly dark in the position of body 1 back institute mounting circuit boards 2, therefore make the fluorescent tube irradiating angle obtain increase, can reach 360 ° of illumination effects as traditional fluorescent tube.
Among a kind of embodiment as shown in Figure 2, arc bar 12 is provided with the support positioning rib 13 of two groups of position symmetries, every group is supported positioning rib 13 and grips a described circuit board 2, make between two circuit boards 2 and have certain angle, be mutually "/" the type distribution, when work, the light-emittingdiode module 3 in two circuit board 2 fronts is simultaneously luminous, lighting angle has intersection mutually, make intensity of illumination better, and can shine directly into the scope that the other side does not cover each other, make the angle of coverage of light also obtain further increase.And in the present embodiment, two groups are supported between the positioning ribs 13 and are provided with the rib 5 that is shaped in arc bar 12 fronts, and this rib 5 can be used in and supports body 1 and prevent distortion, and in lamp works and adstante febre plays certain transmission heat and thermolysis.
As shown in Figure 3, among second kind of embodiment of the present invention, basic structure is as shown in first kind of embodiment, has the support positioning rib 13 of two groups of mutual symmetries with two circuit boards 2 of clamping, and in the present embodiment, the end of rib 5 can arrange lockhole 51, its effect is to cooperate with electrical grafting group 4, be used for being locked electrical grafting group 4, its concrete structure as shown in Figure 4, electrically grafting group 4 is behind the end that is assemblied in body 1, penetrated by a bolt 42 forwards, and lock with the lockhole 51 of this side, so electrically grafting group 4 can be fixed in body 1 end, and do not need the mode that adopts viscose glue bonding, the structure that can realize repeating dismounting and can not destroy the LED fluorescent tube, and make the electrical grafting group 4 that fixes be subjected to the locking of bolt 42, when the LED fluorescent tube is installed, the torsion at fluorescent tube two is not enough to cause rotation or the movement of electrical grafting group 4 again, has guaranteed overall construction intensity and the serviceability of LED fluorescent tube.In addition as shown in FIG., this rib 5 can be provided with above semicircle and integrated end, and the structure that should surpass semicircle surrounds corresponding lockhole 51, makes very convenient.
The LED fluorescent tube of this law provides light source by light-emittingdiode module 3, and its light-emitting diodes body unit 31 by some series connection is formed; According to different illumination effect requirements, the light-emittingdiode module 3 that can be provided with one group of light-emittingdiode module 3 or be in parallel more than two groups at circuit board 2 is combined with the power supply conversion components and parts that circuit board provides, and reaches the intensity of illumination that needs during work.
As shown in Figure 5, the comparatively preferred scheme of the present invention, adopt the power supply of DC power supply, simultaneously for guaranteeing power supply stability, circuit board 2 is provided with the Wheatstone bridge rectifier 6 that connects light-emittingdiode module 3, and connect Wheatstone bridge rectifier 6 and connect with the constant-current source 7 of current limliting with light-emittingdiode module 3, wherein, described constant-current source 7 comprises a constant current performance element 71 and a constant current driving unit 72, constant current driving unit 72 is for being connected to obtain the unit of current signal with Wheatstone bridge rectifier 6,71 of constant current performance elements for control output to guarantee the stable control module of light-emittingdiode module 3 power supplies.
Be illustrated in figure 6 as circuit structure of the present invention comparatively preferred embodiment, described constant current performance element 71 comprises a N-channel MOS pipe Q1, the grid G of this metal-oxide-semiconductor Q1 is connected with Wheatstone bridge rectifier 6 by voltage feedback resistance R 2, its drain D is connected with light-emittingdiode module 2, and its source S is connected with constant current driving unit 72; Described constant current driving unit 72 comprises a current feedback resistance R 1 and a NPN triode Q2, the base stage b of this triode Q2 connects the source S of metal-oxide-semiconductor Q1, and by current feedback resistance R 1 ground connection, its colelctor electrode c connects the grid G of metal-oxide-semiconductor Q1, and its emitter e is ground connection then.Metal-oxide-semiconductor Q1 impedance is lower, so feedback speed is fast, and the efficient height possesses result of use preferably.
Operation principle with this constant-current source of qualitative analysis, when the electric current I through Wheatstone bridge rectifier 6 input light-emittingdiode modules 2 one tunnel increases because of certain reason, the ohmically electric current of R1 increases, and triode Q1 base voltage raises, under Q1 electric current amplification, the electric current that flows through R2 increases, make the Q2 source voltage diminish under the effect of R2, R1, the electric current that flows through the Q2 source electrode is little, under the amplification of Q2, electric current by the Q2 drain electrode reduces, and has just reduced the value of I; In like manner, under the situation that I diminishes, then situation is just opposite.
Certainly above-mentioned just the most basic preferred electrical architecture for, wherein constant-current source 7 is positioned at electronegative potential with respect to light-emittingdiode module 2, and be positioned at the situation of high potential with respect to light-emittingdiode module 2 when constant-current source 7, as shown in Figure 7, adopting Q1 is the P channel MOS tube, Q2 then is the circuit connecting of PNP triode, wherein, the grid G of Q1 is connected with Wheatstone bridge rectifier 6 by voltage feedback resistance R 2, its drain D is connected to the base stage b of Q2, its source S is connected with light-emittingdiode module 2, and the colelctor electrode c of Q2 then connects the grid G of Q1.The operation principle of this circuit is the same with the operation principle of Fig. 7.
As shown in Figure 8, in the circuit structure of the present invention, can also be substituted the current negative feedback circuit of metal-oxide-semiconductor Q1 by triode Q3; Or as shown in Figure 9, substituted the current negative feedback circuit of triode Q2 by the pipe Dz1 that opens the light; Or as shown in figure 10, constant current driving unit 72 adopts the current feedback circuit of amplifier LM358D, realize constant current, certainly Fig. 9 ~ Figure 11 has all only provided the situation that is in electronegative potential with respect to light-emittingdiode module 2, and be in the situation of high potential with respect to light-emittingdiode module 2, then be the distortion of the preferred embodiment the same with Fig. 8, do not repeat them here.
Certainly, above-mentioned just the present invention describes demonstration with reference to preferred embodiment, only will be appreciated that in the spirit that does not break away from the present invention and category for the persond having ordinary knowledge in the technical field of the present invention, still many variations and modification must be arranged.Therefore, the present invention is not restricted to disclosed embodiment, but is as the criterion with the literature record of claim protection domain, does not namely depart from the present patent application claim institute impartial variation and modification for it, should still belong to the present invention's covering scope.
Claims (5)
1. a LED fluorescent tube comprises
One outer tube body (11) is the one-body molded pipe of a hollow chamber, and its inwall is provided with the reinforcement integrally formed with this outer tube (14) in the extending length direction;
One arc bar (12), the inwall of this arc bar back side and described outer tube body (11) is fitted, its front is provided with the support positioning rib (13) of two groups of position symmetries along its length, every group is supported positioning rib (13) and grips a circuit board (2), making two circuit boards (2) be "/" type distributes, be provided with the rib (5) that is shaped in arc bar front between two groups of support positioning ribs, the rib two ends are provided with lockhole (51);
Be installed on described circuit board (2) between the body arc bar (12), (2) are provided with light-emittingdiode module (3) on this circuit board;
Be installed on the electrical connecting element (4) at body two ends;
It is characterized in that:
Described circuit board (2) is elongated, fixedly installs at least one group of light-emittingdiode module (3) on its front, and circuit board (2) both sides are respectively by supporting two shin rib clampings of positioning rib (13), to be fixed on the arc bar;
Described electrical connecting element (4) has two protruding inserted terminals that can be plugged on the traditional fluorescent lamp socket, and wherein two protruding inserted terminals are short-circuit condition Lian Jie ﹔
Described reinforcement (14) be used for clamping the arc bar (12) ﹔ and
Described electrical grafting group is locked by the lockhole (51) of bolt (42) with its respective side.
2. according to the described a kind of LED fluorescent tube of any claim in the claim 1, it is characterized in that: have integrated wave striped on the described outer tube body.
3. a kind of LED fluorescent tube according to claim 1, it is characterized in that: described light-emittingdiode module comprises the light-emitting diodes body unit of some series connection; The light-emittingdiode module that described circuit board is provided with one group of light-emittingdiode module or is in parallel more than two groups.
4. a kind of LED fluorescent tube according to claim 3 is characterized in that: described circuit board is provided with the Wheatstone bridge rectifier that connects the light-emittingdiode module, and connects the Wheatstone bridge rectifier and connect with the constant-current source of current limliting with the light-emittingdiode module.
5. a kind of LED fluorescent tube according to claim 4, it is characterized in that: described constant-current source comprises a constant current performance element and a constant current driving unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105228213A CN101968175B (en) | 2010-10-22 | 2010-10-22 | LED lamp tube |
| US13/105,171 US8602587B2 (en) | 2010-08-18 | 2011-05-11 | LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105228213A CN101968175B (en) | 2010-10-22 | 2010-10-22 | LED lamp tube |
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| Publication Number | Publication Date |
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| CN101968175A CN101968175A (en) | 2011-02-09 |
| CN101968175B true CN101968175B (en) | 2013-09-11 |
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| CN2010105228213A Expired - Fee Related CN101968175B (en) | 2010-08-18 | 2010-10-22 | LED lamp tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273382A (en) * | 2015-10-23 | 2016-01-27 | 扬州天喜塑胶有限公司 | Integrated lamp holder and production technology thereof |
| CN105419259A (en) * | 2015-12-24 | 2016-03-23 | 扬州天喜塑胶有限公司 | Integrated lamp bracket and production process thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102984841A (en) * | 2011-09-02 | 2013-03-20 | 台达电子工业股份有限公司 | LED illumination system structure |
| CN103244836A (en) * | 2012-02-03 | 2013-08-14 | 深圳市比格利电源科技有限公司 | Light-emitting diode (LED) fluorescent lamp with external driving power supply |
| CN104033772B (en) * | 2014-06-19 | 2016-06-08 | 宁波丽安电子有限公司 | The LED lamp tube of a kind of self-adaptation fan heat radiation |
| CN105440535A (en) * | 2015-12-22 | 2016-03-30 | 扬州天喜塑胶有限公司 | Integral lamp bracket and production technology thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201149212Y (en) * | 2007-07-09 | 2008-11-12 | 黄怡仁 | Package assembly of LED lamp tube |
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2010
- 2010-10-22 CN CN2010105228213A patent/CN101968175B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201149212Y (en) * | 2007-07-09 | 2008-11-12 | 黄怡仁 | Package assembly of LED lamp tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273382A (en) * | 2015-10-23 | 2016-01-27 | 扬州天喜塑胶有限公司 | Integrated lamp holder and production technology thereof |
| CN105273382B (en) * | 2015-10-23 | 2021-03-30 | 扬州天喜高新材料有限公司 | Integrated lamp bracket and production process thereof |
| CN105419259A (en) * | 2015-12-24 | 2016-03-23 | 扬州天喜塑胶有限公司 | Integrated lamp bracket and production process thereof |
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| Publication number | Publication date |
|---|---|
| CN101968175A (en) | 2011-02-09 |
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