CN201368351Y - LED lamp tube structure - Google Patents
LED lamp tube structure Download PDFInfo
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- CN201368351Y CN201368351Y CNU2009200067203U CN200920006720U CN201368351Y CN 201368351 Y CN201368351 Y CN 201368351Y CN U2009200067203 U CNU2009200067203 U CN U2009200067203U CN 200920006720 U CN200920006720 U CN 200920006720U CN 201368351 Y CN201368351 Y CN 201368351Y
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- led lamp
- lamp tube
- tube structure
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Abstract
The utility model relates to an LED lamp tube structure comprising a heat radiating seat body, a printing printed circuit board and a lamp shade. The heat radiating seat body takes the shape of a hollow tube and is provided with a plurality of heat radiating fins for improving heat radiating effect of the LED lamp tube structure and further improving light-emitting efficiency of the LED lamp tube structure. Two sides of the heat radiating seat body are respectively provided with a first fixing structure; two sides of the lamp shade are respectively provided with a second fixing structure; the second fixing structure is fixed at the first fixing structure; the lamp shade further comprises an outer light-emitting layer and an inner light-emitting layer, and an interval positioned between the outer light-emitting layer and the inner light-emitting layer forms a hollow part; and the inner light-emitting layer of the lamp shade presses the printing circuit board and fixes the printing circuit board on the radiating seat body instead of applying any component to fix the printing circuit board on the radiating seat body.
Description
Technical field
The utility model is about a kind of lamp tube structure, is meant a kind of LED lamp tube structure especially.
Background technology
Along with the lifting of living standard, illumination and lamp decoration are subjected to people's attention gradually, if can arrange in pairs or groups suitable lamp decoration in the decoration of indoor and outdoor, lamp decoration not only has utility function, has more the function of beautifying the environment.Present most of user still uses the light source of fluorescent tube as lamp decoration.
Fluorescent tube briefly is an airtight gas-discharge tube.Main gas in its pipe is argon gas, and air pressure is about 0.3% of atmosphere, more comprises several silver that drip, form the mercury vapour of trace, and mercury atom accounts for the millesimal ratio of all gas atom, by the electric current of conducting in the pipe, form the gas discharge state, and send light.Fluorescent tube is under long application, can cause the lamp tube ends blackening, main because the electrode of fluorescent tube is the two ends of fluorescent tube, therefore when two end electrodes is evaporated by bump, on the tube wall of meeting attached to the fluorescent tube both sides, cause the lamp tube ends blackening.When the two ends of fluorescent lamp pipe gradually after the blackening, the life-span of expression fluorescent tube, the light that fluorescent tube discharged lowered relatively gradually to coda.Except above-mentioned, fluorescent tube still has the advantage of big irradiated area, reaches short shortcoming in service life greatly but fluorescent tube has power consumption.
Yet the technology of light emitting diode (LED) is grown up and the scope used increases day by day in recent years, and the daily living article arround our life frequently occurs, light emitting diode utilizes the mode of the high electric current of low pressure luminous, and the long service life of light emitting diode, and has a low power consumption, the heat energy that light emitting diode produced is little, and light emitting diode has above-mentioned environmental protection advantage.So begin to research and develop the LED fluorescent tube.
But light emitting diode all has overheated problem always, and when overheated as if light emitting diode, the luminous efficiency of light emitting diode can reduce.So the LED fluorescent tube also can produce overheated problem, in order to solve the overheated problem of LED fluorescent tube, the utility model is provided with a plurality of radiating fins on the heat radiation pedestal, to promote the radiating effect of LED fluorescent tube, avoid light emitting diode overheated, and then promote the luminous efficiency of LED fluorescent tube.
Another problem of LED fluorescent tube is assembling, and when general LED fluorescent tube was assembled, printed circuit board (PCB) utilized gluing or locking mode to be fixed on the heat radiation pedestal, and the complexity in the time of so can increasing assembling more can increase assembly cost.Complexity and assembly cost when assembling in order to reduce, the utility model directly utilizes the lampshade fixed printed circuit board, therefore need not use any assembly fixed printed circuit board on the heat radiation pedestal, complexity and assembly cost when assembling to reduce.
Summary of the invention
One of the purpose of this utility model, be to provide a kind of LED lamp tube structure, in a heat radiation pedestal a plurality of radiating fins be set, to promote the radiating effect of this LED lamp tube structure, can avoid light emitting diode overheated, and then promote the luminous efficiency of LED lamp tube structure.
Two of the purpose of this utility model, again in a kind of LED lamp tube structure is provided, utilize a lampshade directly to fix a printed circuit board (PCB), and then need not use any assembly to fix this printed circuit board (PCB) on this heat radiation pedestal, complexity and assembly cost in the time of can reducing assembling.
Be achieved through the following technical solutions for realizing the purpose of this utility model and solving its technical problem.
A kind of LED lamp tube structure described in the utility model is characterized in that, comprises:
One heat radiation pedestal, it is a hollow tubular, and both sides have a first fixed structure and a plurality of radiating fin respectively;
One printed circuit board (PCB) is located at this heat radiation pedestal, and has a plurality of light emitting diodes; And
One lampshade, it is located at this heat radiation pedestal accordingly, and comprise a luminescent layer and an outer luminescent layer in one, be somebody's turn to do interior luminescent layer and be somebody's turn to do to have between the outer luminescent layer and form a hollow bulb at interval, the both sides of this lampshade have one second fixed structure respectively, this second fixed structure is corresponding and can be fixed in this first fixed structure with assembling, and luminescent layer is suppressed this printed circuit board (PCB) in this, and fixes this printed circuit board (PCB) in this pedestal that dispels the heat.
The beneficial effects of the utility model are: the utility model provides a kind of LED lamp tube structure, and it mainly is provided with a plurality of radiating fins in the heat radiation pedestal, with the radiating effect of increase LED lamp tube structure, and then the luminous efficiency of lifting LED lamp tube structure.When utilizing in addition lampshade to be fixed in the heat radiation pedestal again, the interior luminescent layer of lampshade can directly be suppressed printed circuit board (PCB) in the heat radiation pedestal, so directly fixed printed circuit board and need not utilize any other assembly fixed printed circuit board on the pedestal that dispels the heat.
Moreover, the utility model optical module is set again or a plurality of optical particles that mix in lampshade, the light of being launched with even a plurality of light emitting diode, perhaps change the wavelength of the light that a plurality of light emitting diode launches, even can promote the briliancy of the light that a plurality of light emitting diode launches.In addition, the utility model can form optical grains again in the lampshade surface, to increase the light direction of the light that a plurality of light emitting diode launched.
The utility model in order to promote the radiating effect of LED lamp tube structure, is set up the heat radiation groove in the heat radiation pedestal that is provided with those radiating fins again, with of the convection current of lifting heat radiation pedestal inside with outer gas stream, and then the radiating effect of lifting LED lamp tube structure.The utility model more is provided with two ends of two swivel joints in heat radiation pedestal and lampshade, and the rotation swivel joint can change the angle of two pins of joint, and then it is correct to guarantee to be installed in the direction of illumination of LED lamp tube structure of lamp socket.
The utility model more provides one to exchange switched power supply, exchanges switched power supply and can be arranged in the fluorescent tube, to provide stable output voltage to the LED lamp tube structure, so can avoid the light emitting source of LED lamp tube structure that the situation of flicker takes place.
Description of drawings
Fig. 1 is the stereo appearance figure of a preferred embodiment of the present utility model;
Fig. 2 is the decomposing schematic representation of a preferred embodiment of the present utility model;
Fig. 3 is the decomposing schematic representation of another preferred embodiment of the present utility model;
Fig. 4 is the decomposing schematic representation of another preferred embodiment of the present utility model;
Fig. 5 is the decomposing schematic representation of another preferred embodiment of the present utility model;
Fig. 6 is the decomposing schematic representation of another preferred embodiment of the present utility model;
Fig. 7 is the stereo appearance figure of another preferred embodiment of the present utility model;
Fig. 8 is the generalized section of another preferred embodiment of the present utility model;
Fig. 9 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;
Figure 10 is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model; And
Figure 11 is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model.
[figure number simple declaration]
1 LED lamp tube structure, 10 heat radiation pedestals
101 radiating fins, 103 recesses
105 heat radiation grooves, 107 first fixed structures
11 heat dissipating layers, 12 printed circuit board (PCB)s
121 light emitting diodes, 14 lampshades
140 outer luminescent layer 1401 inner surfaces
1403 outer surfaces, 141 optical grains
142 outer luminescent layer 1421 outer surfaces
1423 inner surfaces, 143 second fixed structures
144 hollow bulbs, 16 optical modules
18 joints, 181 rotating shafts
183 pin 183a, first pin
The 183b second pin 183c the 3rd pin
183d the 4th pin 2 exchanges 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
230 loads of 228 feedback control circuits
AC
IN1The first AC-input voltage AC
IN2Second AC-input voltage
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:
At first, seeing also Fig. 1 and Fig. 2, is to be the stereo appearance figure of a preferred embodiments of the present utility model and the decomposing schematic representation of a preferred embodiment of the present utility model.As shown in the figure, present embodiment provides a kind of LED lamp tube structure 1, LED lamp tube structure 1 is to comprise heat radiation pedestal 10, a printed circuit board (PCB) 12 and a lampshade 14, heat radiation pedestal 10 is a hollow tubular, heat radiation pedestal 10 can be a metal material, as the heat radiation purposes, the surface of heat radiation pedestal 10 has a plurality of radiating fins 101 and a recess 103, those radiating fins 101 and setting and the radiating effect of recess 103 as printed circuit board (PCB) 12, and the both sides of heat radiation pedestal 10 have a first fixed structure 107 respectively, can be used as fixed-purpose.Printed circuit board (PCB) 12 is arranged at the recess 103 of heat radiation pedestal 10, and has a plurality of light emitting diodes 121.Lampshade 14 comprises luminescent layer 142 in an outer luminescent layer 140 and, has the interval between outer luminescent layer 140 and the interior luminescent layer 142 and forms a hollow bulb 144.Lampshade 14 is the recesses 103 that are arranged at heat radiation pedestal 10 accordingly, the both sides of lampshade 14 have one second fixed structure 143 respectively, second fixed structure 143 is corresponding and can be fixed in the first fixed structure 107 of heat radiation pedestal 10 with assembling, and so lampshade 14 promptly is fixed in recess 103 positions of heat radiation pedestal 10 accordingly.Among the embodiment of the present utility model, first fixed structure 107 can be the slide rail surface, and second fixed structure 143 can be chute, and second fixed structure 143 is to be assembled in first fixed structure 107 slidably.By this, when second fixed structure 143 of lampshade 14 is fixed in the first fixed structure 107 of heat radiation pedestal 10, the interior luminescent layer 142 of lampshade 14 promptly can be suppressed printed circuit board (PCB) 12 on the recess 103 of heat radiation pedestal 10, need not utilize other fixation kit (such as: screw or rivet etc. are fixation kit similarly) effect fixes.
Seeing also Fig. 3, is the decomposing schematic representation of another preferred embodiment of the present utility model.As shown in the figure, the utility model is in order to promote the radiating effect of LED lamp tube structure 1, LED lamp tube structure 1 more comprises a heat dissipating layer 11, heat dissipating layer 11 is located in the recess 103 of heat radiation pedestal 10, printed circuit board (PCB) 12 then is fixed in heat dissipating layer 11, can effectively promote the heat energy that those light emitting diodes 121 of being located at printed circuit board (PCB) 12 be produced by heat dissipating layer 11, and then effectively promote the radiating effect of LED lamp tube structure 1.In the present embodiment, this heat dissipating layer 11 can be heat radiation paster or other heat radiation coating as media, and printed circuit board (PCB) 12 can effectively be directed to heat energy the recess 103 of heat radiation pedestal 10 via this dispel the heat paster or heat radiation coating, forms better heat radiating effect.
In addition, because each light emitting diode 121 is a point source of light, if evenly those light emitting diodes 121 launched light the time, light from the outer luminescent layer 140 of lampshade 14 and in luminescent layer 142 appear, and when exposing to a body surface, be to present a plurality of luminous points in body surface.So, the light of being launched for even those light emitting diodes 121 or promote the briliancy of the light that those light emitting diodes 121 are launched, the utility model can add at least one optical module in LED lamp tube structure 1, optical module can be a light diffusing sheet or a brightness enhancement film, wherein the even light launched of those light emitting diodes 121 of light diffusing sheet makes the light that appears from lampshade 14 not be a plurality of luminous points.Brightness enhancement film can be in order to reflect the light that those light emitting diodes 121 are launched again, promotes the briliancy of the light that a plurality of light emitting diodes 121 are launched.In addition, the utility model is in order to increase the variation of light, and above-mentioned optical module more can be flourescent sheet, the wavelength of the light that is sent by convertible those light emitting diodes 1211 of flourescent sheet, and the light of generation different colours, with the effective utilization of effective lifting LED lamp tube structure 1.Below be to exemplify embodiment, and explanation the utility model increase the mode of optical module.
Seeing also Fig. 4, is the decomposing schematic representation of another preferred embodiment of the present utility model.As shown in the figure, optical module 16 can be arranged at the outer luminescent layer 140 of lampshade 14, the outer luminescent layer 140 of lampshade 14 comprises an inner surface 1401 and an outer surface 1403, and the optical module 16 of present embodiment is the outer surface 1403 that is arranged at the outer luminescent layer 140 of lampshade 14.Yet optical module 16 also can be arranged at the inner surface 1401 of the outer luminescent layer 140 of lampshade 14, repeats no more in this.Consult Fig. 5 more in the lump, the optical module 16 of the foregoing description is an outer luminescent layer 140 of being located at lampshade 14, and the optical module 16 of present embodiment is an interior luminescent layer 142 of being located at lampshade 14, and the interior luminescent layer 142 of lampshade 14 comprises an outer surface 1421 and an inner surface 1423, the optical module 16 of present embodiment is the outer surface 1421 that is arranged at the interior luminescent layer 142 of lampshade 14, but do not limit to the outer surface 1421 that optical module 16 only can be arranged at interior luminescent layer 142, optical module 16 also can be arranged at the inner surface 1423 of the interior luminescent layer 142 of lampshade 14, repeats no more in this.In addition, optical module 16 also can be arranged at outer luminescent layer 140 and interior luminescent layer 142 simultaneously.In addition, optical module 16 also can be arranged at the hollow bulb 144 between outer luminescent layer 140 and the interior luminescent layer 142, for example different flourescent sheets is set in hollow bulb, and produces the light of different colours, with the effective utilization of effective lifting LED lamp tube structure 1.
Accept above-mentioned, except the light that optical module 16 even those light emitting diodes 121 are sent is set, change the wavelength of the light that those light emitting diodes 121 are sent or promote the briliancy of the light that those light emitting diodes 121 are sent, the utility model can mix a plurality of optical particles in lampshade 14, the light that those light emitting diodes 121 are launched sees through the lampshade 14 of those optical particles that mixed, the also even light launched of those light emitting diodes 121, change the wavelength of the light that those light emitting diodes 121 are launched or promote the briliancy of the light that those light emitting diodes 121 are launched, it is main because those optical particles can contain a plurality of smooth diffusion particles, a plurality of fluorescent particles or a plurality of blast particle, the wherein even light launched of those light emitting diodes 121 of those light diffusion particles.The wavelength of the light that convertible those light emitting diodes 121 of those fluorescent particles are launched.Those blast particles can reflect the light that those light emitting diodes 121 are launched again, to promote the briliancy of the light that those light emitting diodes 121 are launched.
Seeing also Fig. 6, is the decomposing schematic representation of another preferred embodiment of the present utility model.As shown in the figure, the utility model can design in the outer luminescent layer 140 of lampshade 14 or any surface of interior luminescent layer 142 and be carved with an optical grains 141 for the light direction of the light that increases those light emitting diodes 121 and launched.Present embodiment is carved with an optical grains 141 in the surface of the interior luminescent layer 142 of lampshade 14, optical grains 141 makes the rough surface of the interior luminescent layer 142 of lampshade 14, the light going direction changing that causes those light emitting diodes 121 to be launched, and then increase the light direction of the light that those light emitting diodes 121 are launched.In like manner, optical grains 141 also can be engraved on the surface of outer luminescent layer 140.
Seeing also Fig. 7, is the stereo appearance figure of another preferred embodiment of the present utility model.As shown in the figure, the embodiment of Fig. 1 has disclosed heat radiation pedestal 10 and has been provided with a plurality of radiating fins 101, make LED lamp tube structure 1 have the function of heat radiation, present embodiment is in order to promote the radiating effect of LED lamp tube structure 1, so the outer surface in heat radiation pedestal 10 is provided with at least one heat radiation groove 105, heat radiation groove 105 is offered along a longitudinally of heat radiation pedestal 10, and is connected in the inside of heat radiation pedestal 10.So, but the air-flow of the inside and outside portion of heat radiation groove 105 conductings heat radiation pedestal increases the inside and outside airflow convection of heat radiation pedestal 10, quickening to discharge the thermal current in the heat radiation pedestal 10, and then promotes the radiating effect of LED lamp tube structure 1.In addition, the cross sectional shape of an embodiment of heat radiation groove 105 can be the L type, so can avoid the outside of the common people from LED lamp tube structure 1, and directly sees the structure in the heat radiation pedestal 10, reaching effect attractive in appearance, and can avoid external dust to enter in the heat radiation pedestal 10.
Seeing also Fig. 8, is the generalized section of another preferred embodiment of the present utility model.As shown in the figure, the LED lamp tube structure 1 of present embodiment more comprises two ends that two joints, 18, two joints 18 are located at heat radiation pedestal 10 and lampshade 14 respectively, and the drawing of present embodiment is only drawn monolateral joint 18 and the connection status of heat radiation pedestal 10 with lampshade 14.The joint 18 of present embodiment is a swivel joint, and an end of joint 18 has a rotating shaft 181, and its other end has two pins 183, and rotating shaft 181 is fixed in heat radiation pedestal 10.When swivel 18, can adjust the angle of two pins 183, the illumination direction when guaranteeing that LED lamp tube structure 1 is installed on a lamp socket is correct.
In addition, the utility model further is provided for one of LED lamp tube structure and exchanges switched power supply, seeing also Fig. 9, 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 AC
IN2,, and light the light emitting diode of LED lamp tube structure 1 inside with the generation output voltage.
Seeing also Figure 10, 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 Figure 10 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, it is because power-switching circuit 220 of the present utility model provides 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 Figure 10 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 is 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 Figure 11, is the calcspar of the interchange switched power supply of another preferred embodiment of the present utility model.See also Figure 10, 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 provides a kind of LED lamp tube structure, and it mainly is provided with a plurality of radiating fins in the heat radiation pedestal, with the radiating effect of increase LED lamp tube structure, and then the luminous efficiency of lifting LED lamp tube structure.When utilizing in addition lampshade to be fixed in the heat radiation pedestal again, the interior luminescent layer of lampshade can directly be suppressed printed circuit board (PCB) in the heat radiation pedestal, so directly fixed printed circuit board and need not utilize any other assembly fixed printed circuit board on the pedestal that dispels the heat.Moreover, the utility model optical module is set again or a plurality of optical particles that mix in lampshade, the light of being launched with even a plurality of light emitting diode, perhaps change the wavelength of the light that a plurality of light emitting diode launches, even can promote the briliancy of the light that a plurality of light emitting diode launches.In addition, the utility model can form optical grains again in the lampshade surface, to increase the light direction of the light that a plurality of light emitting diode launched.The utility model in order to promote the radiating effect of LED lamp tube structure, is set up the heat radiation groove in the heat radiation pedestal that is provided with those radiating fins again, with of the convection current of lifting heat radiation pedestal inside with outer gas stream, and then the radiating effect of lifting LED lamp tube structure.The utility model more is provided with two ends of two swivel joints in heat radiation pedestal and lampshade, and the rotation swivel joint can change the angle of two pins of joint, and then it is correct to guarantee to be installed in the direction of illumination of LED lamp tube structure of lamp socket.The utility model more provides one to exchange switched power supply, exchanges switched power supply and can be arranged in the fluorescent tube, to provide stable output voltage to the LED lamp tube structure, so can avoid the light emitting source of LED lamp tube structure that the situation of flicker takes place.
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 (12)
1. a LED lamp tube structure is characterized in that, comprises:
One heat radiation pedestal, it is a hollow tubular, and both sides have a first fixed structure and a plurality of radiating fin respectively;
One printed circuit board (PCB) is located at this heat radiation pedestal, and has a plurality of light emitting diodes; And
One lampshade, it is located at this heat radiation pedestal accordingly, and comprise a luminescent layer and an outer luminescent layer in one, be somebody's turn to do interior luminescent layer and be somebody's turn to do to have between the outer luminescent layer and form a hollow bulb at interval, the both sides of this lampshade have one second fixed structure respectively, this second fixed structure is corresponding and can be fixed in this first fixed structure with assembling, and luminescent layer is suppressed this printed circuit board (PCB) in this, and fixes this printed circuit board (PCB) in this pedestal that dispels the heat.
2. LED lamp tube structure according to claim 1 is characterized in that, wherein this heat radiation pedestal is provided with a recess, and this printed circuit board (PCB) is located in this recess, has set up a heat dissipating layer between this printed circuit board (PCB) and the recess.
3. LED lamp tube structure according to claim 1 is characterized in that, more comprises:
At least one optical module, be located at this lampshade should outer luminescent layer an inner surface or an outer surface, and this optical module is a light diffusing sheet, a flourescent sheet or a brightness enhancement film.
4. LED lamp tube structure according to claim 1 is characterized in that, more comprises:
At least one optical module, be located at this lampshade should in an inner surface or an outer surface of luminescent layer, and this optical module is a light diffusing sheet, a flourescent sheet or a brightness enhancement film.
5. LED lamp tube structure according to claim 1 is characterized in that, more comprises:
At least one optical module is located at this hollow bulb, and this optical module is a light diffusing sheet, a flourescent sheet or a brightness enhancement film.
6. LED lamp tube structure according to claim 1 is characterized in that wherein this lampshade contains a plurality of optical particles, and those optical particles are the wherein a kind of of a plurality of smooth diffusion particles, a plurality of fluorescent particles or a plurality of blast particles.
7. LED lamp tube structure according to claim 1 is characterized in that, wherein the arbitrary surfaces of the interior luminescent layer of this lampshade or outer luminescent layer has an optical grains.
8. LED lamp tube structure according to claim 1 is characterized in that, wherein this heat radiation pedestal has at least one heat radiation groove, and this heat radiation groove is to offer along a longitudinally of this heat radiation pedestal, and is connected in the inside of this heat radiation pedestal.
9. LED lamp tube structure according to claim 1 is characterized in that, more comprises two joints, this two joint is located at two ends of this heat radiation pedestal and this lampshade respectively, and this two joint is respectively a swivel joint, and has two pins respectively, rotate this joint, to adjust the angle of this two pin.
10. LED lamp tube structure according to claim 1, it is characterized in that, more comprise one and exchange switched power supply, this interchange switched power supply 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.
11. LED lamp tube structure according to claim 10 is characterized in that wherein this power-switching circuit couples at least one LED, 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.
12. LED lamp tube structure according to claim 11 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200067203U CN201368351Y (en) | 2009-03-09 | 2009-03-09 | LED lamp tube structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200067203U CN201368351Y (en) | 2009-03-09 | 2009-03-09 | LED lamp tube structure |
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| CN201368351Y true CN201368351Y (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2009200067203U Expired - Fee Related CN201368351Y (en) | 2009-03-09 | 2009-03-09 | LED lamp tube structure |
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| CN (1) | CN201368351Y (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022652A (en) * | 2010-12-21 | 2011-04-20 | 东莞市华胜展鸿电子科技有限公司 | LED (light emitting diode) lamp |
| CN102147070A (en) * | 2011-05-17 | 2011-08-10 | 潘宇强 | Led lamp |
| CN102943986A (en) * | 2012-10-19 | 2013-02-27 | 岭南园林股份有限公司 | Solar power supply based LED (Light Emitting Diode) landscape lamp |
| CN102971574A (en) * | 2010-03-03 | 2013-03-13 | 克利公司 | Solid state lamp and bulb |
| CN102997174A (en) * | 2011-09-14 | 2013-03-27 | 湖南明和光电设备有限公司 | LED (Light Emitting Diode) lamp with double color change and adjustable beam angle |
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| CN103925507A (en) * | 2013-01-11 | 2014-07-16 | 雷师凯 | Led lamp tube device |
| TWI476343B (en) * | 2012-04-26 | 2015-03-11 | ||
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| CN102971574A (en) * | 2010-03-03 | 2013-03-13 | 克利公司 | Solid state lamp and bulb |
| CN102022652A (en) * | 2010-12-21 | 2011-04-20 | 东莞市华胜展鸿电子科技有限公司 | LED (light emitting diode) lamp |
| CN102147070B (en) * | 2011-05-17 | 2013-03-20 | 潘宇强 | Led lamp |
| CN102147070A (en) * | 2011-05-17 | 2011-08-10 | 潘宇强 | Led lamp |
| CN103562627A (en) * | 2011-05-27 | 2014-02-05 | 欧司朗股份有限公司 | LED luminaire |
| CN103562627B (en) * | 2011-05-27 | 2016-11-30 | 欧司朗股份有限公司 | LED light device |
| CN102997174A (en) * | 2011-09-14 | 2013-03-27 | 湖南明和光电设备有限公司 | LED (Light Emitting Diode) lamp with double color change and adjustable beam angle |
| TWI476343B (en) * | 2012-04-26 | 2015-03-11 | ||
| CN102943986A (en) * | 2012-10-19 | 2013-02-27 | 岭南园林股份有限公司 | Solar power supply based LED (Light Emitting Diode) landscape lamp |
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| CN103672778A (en) * | 2013-12-04 | 2014-03-26 | 四川格兰德科技有限公司 | Multifunctional LED lamp holder |
| WO2021121221A1 (en) * | 2019-12-19 | 2021-06-24 | 苏州欧普照明有限公司 | Linear light and linear light system |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20130309 |