CN205356767U - Luminance auto -change over device of LED lamps and lanterns - Google Patents
Luminance auto -change over device of LED lamps and lanterns Download PDFInfo
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- CN205356767U CN205356767U CN201521118675.2U CN201521118675U CN205356767U CN 205356767 U CN205356767 U CN 205356767U CN 201521118675 U CN201521118675 U CN 201521118675U CN 205356767 U CN205356767 U CN 205356767U
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Abstract
The utility model provides a luminance auto -change over device of LED lamps and lanterns, it comprises following: it triggers to be used for responding to external source the sensor that luminance is switched, a LED light source array for the illumination, with the electricity connect in load control circuit between sensor and the LED light source array is configured as: receive the drive signal of the sensor be connected with this load control circuit electricity and promotion the operating current of LED lamps and lanterns switches in order to carry out luminance. The utility model discloses in, can only use above characteristic subassembly, need not to use other electrical component, also need not to use singlechip or digital signal processor unit to control luminance and switch.
Description
Technical field
This utility model relates generally to and adopts the control LED lamp brightness switching device or integrated circuit that power supply improves and load change programme realizes.
Background technology
LED light source is used widely because of its advantage such as high light-emitting rate and low energy consumption.The job demand of LED light source accesses suitable power source and drives realization, usually, the manufacture and selection of power supply select Switching Power Supply to be converted to the unidirectional current for LED light source work after alternating current is carried out blood pressure lowering and rectification, so need different LED lamp is designed different types of power supply, Expenses Cost and heat dissipation problem easily occurs.On the other hand, the brightness flop in order to realize LED lamp is changed, and needs again to design special drive circuit and carrys out conversion electric power output power, and cost increases further.
Utility model content
This utility model embodiment solves power supply cost and the efficiency of LED lamp by being different from conventional art, in the brightness switching device embodiment that this utility model designs for LED lamp, Switching Power Supply is not used to transfer power inverter to, directly use LED light source as reduction voltage circuit, in order to enable to be obtained and rectification by alternating current, rectification circuit can be coupled further in LED light source front end, technical staff can use linear bridge rectifier or known waveform reverse circuit (such as, negative half period reverse circuit) arrange external AC current, so, the voltage inputing to this brightness switching device may be disposed at fixed value, thus achieving effective control.
It addition, the present inventor have studied use outside sources to encourage the brightness of this brightness switching device to switch on aforementioned base.The form of outside sources can be from human body sensing or other external sense signals, for instance sound, light or infrared-ray.Simultaneously, this utility model brightness switching device devises the static working current to LED light source or power, so, this static working current can as the stand-by operation electric current of LED light source (such as, the low light emission rate state of LED light source), it is also possible to as the starting current of the sensor device of sensing outside sources.In this manner it is achieved that as reduction voltage circuit use LED light source in will flow through smaller current, this smaller current can by the pressure drop of LED light source go offer sensor device running voltage.
In one embodiment, a kind of method controlling LED lamp brightness switching includes: the triggering pumping signal to the load control circuit being electrically connected to this sensor when the sensor sensing of installing is to outside sources in described LED lamp；And promote the operating current of described LED lamp to carry out brightness switching by described load control circuit.
In the present embodiment, sensor can be passed through start after sensing outside sources signal and export a pumping signal to the reverse triggering signal of load control circuit one, so that this load control circuit reversely promotes the supply voltage at LED light source two ends, to realize LED light source from relatively low light emission rate to the State Transferring of high light-emitting rate.
In an example of the method for this control LED lamp brightness switching, described sensor is to select infrared heat sensor or electro-optical pickoff, and described outside sources is to trigger the infrared signal of described infrared heat sensor or trigger the optical signal of described electro-optical pickoff.
Wherein, the method controlling LED lamp brightness switching farther includes: by the LED light source array of described LED lamp to the alternating voltage blood pressure lowering from the alternating current line of force, and by supplying the sensor running voltage after described load control circuit voltage stabilizing.
In another embodiment, the brightness switching device of a kind of LED lamp is by consisting of: for sensing outside sources to trigger the sensor of described brightness switching；For the LED light source array illuminated；And the load control circuit being electrically connected between described sensor and LED light source array, it is configured to: receive the pumping signal of sensor electrically connected with this load control circuit, and promotes the operating current of described LED lamp to carry out brightness switching.In the present embodiment, can only use features above assembly, it is not necessary to use other electric components, control brightness switching without using single-chip microcomputer or DSP unit.
In a kind of modification, described load control circuit is made up of manostat, stabilized switch, excitation switch, the 3rd resistance, the 4th resistance and diode, wherein said stabilized switch is connected to LED light source array, is tapped into again the feeder ear of described manostat input and sensor.
Wherein, the manostat of this load control circuit adopts low pressure difference linear voltage regulator.It addition, described stabilized switch and excitation switch select MOS switch to realize.
In an example, the outfan of described manostat is tapped into two-way path: the 4th resistance of wherein leading up to accesses described excitation switch, the 3rd resistance of separately leading up to accesses a LED, the further ground connection of described LED is arranged, and the triggering pin of wherein said sensor accesses described excitation switch with input signal.
In the present embodiment, described LED light source array is configured to: to the alternating voltage blood pressure lowering from the alternating current line of force, and by supplying the sensor running voltage after described load control circuit voltage stabilizing.
Further, described LED light source array is electrically connected to booster circuit further, and this booster circuit is configured to: boosted by the alternating voltage from the described alternating current line of force, and the arrangement to be satisfied with described LED light source array is arranged.
Wherein, described LED light source array is parallel with the shunt regulator circuit for stablizing this LED light source array both end voltage.
In another kind of modification, between described load control circuit and sensor, it is provided with the stabilized switch being connected to above-mentioned LED light source array outfan, is configured to the operating current of switching LED light source array.
As the improvement of this modification, described load control circuit is made up of manostat, excitation switch, the 3rd resistance, the 4th resistance and diode.Stabilized switch is connected in the power path of LED light source array, is tapped into again the feeder ear of manostat input and sensor.
As further improvement, described stabilized switch is electrically connected to again manostat, wherein one end of this manostat is provided with an excitation switch being electrically connected to the sensor outfan, described manostat is configured to: turn on the conducting state to change described stabilized switch by described excitation switch according to pumping signal so that promote the operating current of described LED lamp.
In foregoing individual embodiments, this brightness switching device can be encapsulated on a monolayer surface-mounted integrated circuit, can adopt pluggable mode electric property coupling in addition between itself and LED light source.
Wherein, described stabilized switch and excitation switch are to be installed on LED particle substrate in paster mode, to realize effective heat radiation.
This utility model above-described embodiment have employed linear voltage characteristic, devises static working current, and the alternating current of electric network power line is by being supplied to, after multiple LED light source granule blood pressure lowerings, the running voltage that sensor is suitable；Adopt load control circuit reversely to adjust the operating current of whole LED light source array simultaneously, known from the above, the operating current of sensor is a part for LED light source standby current, change by switching this load control circuit load to LED light source, adjust operating current or power, promote the brightness of LED lamp with this.As prominent effect of the present utility model, the circuit of this brightness switching device or method is more to simplify and reliable and stable and easy for installation, is suitable for promoting.
Accompanying drawing explanation
Fig. 1 is the local circuit principle schematic of the brightness switching device of this utility model LED lamp.
Detailed description of the invention
Prominent effect of the present utility model can adopt the mode of comparison accompanying drawing to carry out detailed embodiment, and embodiment of the present utility model is especially effectively control and easily install to realize for LED lamp tube or common fluorescent tube.With reference to Fig. 1, in one embodiment, the method controlling LED lamp (such as, LED lamp tube) brightness switching includes:
Step 1, the sensor 10 installed in described LED lamp trigger the pumping signal to the load control circuit being electrically connected to this sensor 10 when sensing outside sources.Wherein sensor 10 is triggered in pin OUT input extremely above-mentioned load control circuit by it.As it is shown in figure 1, the embodiment of load control circuit is made up of manostat U1, stabilized switch Q1, excitation switch Q2, the 3rd resistance R3, the 4th resistance R4 and diode D80.Wherein stabilized switch Q1 and excitation switch Q2 can be selected for MOS switch or the realization of other SPGAs, and stabilized switch Q1 is connected in the power path of LED light source array 30, is tapped into again the feeder ear VCC of manostat U1 input and sensor 10.The essential electrical assembly of this load control circuit is manostat U1, it can adopt (such as) low pressure difference linear voltage regulator (LDO) or similar linear voltage stabilization device/chip, its outfan is tapped into two-way path: the 4th resistance R4 of wherein leading up to accesses excitation switch Q2, the 3rd resistance R3 of separately leading up to accesses the further ground connection GND of LED D80, described LED D80 and arranges.The triggering pin OUT of sensor 10 accesses described excitation switch Q2 with input signal；And
Step 2, by described load control circuit promote described LED lamp operating current to carry out brightness switching.
In an example of the method for this control LED lamp brightness switching, described sensor 10 is to select infrared heat sensor or electro-optical pickoff, and described outside sources is to trigger the infrared signal of described infrared heat sensor or trigger the optical signal of described electro-optical pickoff.Technical staff is it should be appreciated that use other sensors to realize.Such as, radar sensor, light sensing switch etc. are used.
Wherein, above-mentioned steps 1 farther includes: by the LED light source array 30 of described LED lamp to the alternating voltage blood pressure lowering from the alternating current line of force, and by supplying the sensor 10 after described load control circuit voltage stabilizing with running voltage VCC.
In this example embodiment, described LED light source array 30 is parallel with the shunt regulator circuit for stablizing this LED light source array 30 both end voltage.Wherein, the first resistance R1, the second resistance R2 and Zener diode D2 are accessed in one end for the stabilized switch Q1 in above-mentioned load control circuit, first resistance R1, the second resistance R2 and Zener diode D2 are connected on and input between the DC voltage V+ of LED light source array 30 and V-end, and further ground connection GND, so, the DC voltage inputing to LED light source array 30 can be carried out voltage stabilizing, to export the running voltage VCC stable to sensor 10 by stabilized switch Q1.
Further, in the method for above-mentioned control LED lamp brightness switching, being boosted by the alternating voltage from the described alternating current line of force, the arrangement to be satisfied with described LED light source array is arranged.
In this example embodiment, as shown in Figure 1, for LED lamp tube, LED light source array 30 is to have concatenated multiple LED (or light-emitting particles) with cascade, for instance totally 79 LED D1, ..., D79, if can meet when electric current is certain with the array of source of cascade realization, each LED is impartial current limliting step by step, thus input is controlled to (such as)+12V to the DC voltage on stabilized switch Q1, meet the running voltage starting sensor 10.And for the LED of more arrangements, numerical value restriction due to the DC voltage V+ of input, then according to the requirement starting voltage, this DC voltage V+ can be boosted or blood pressure lowering, for instance during for 200 LED, can adopt and the DC voltage V+ of 200V is boosted to 330V.Therefore can install a booster circuit 20, DC voltage V+ is boosted, can also be reduction voltage circuit or linear DC translation circuit, isolated variable circuit etc. in other examples.
Additionally as a kind of modification, above-mentioned steps 1 further includes: arrange the static working current of LED light source array 30, to determine the relatively low Brightness Duty state of this LED light source array 30.According to above-described embodiment, the outfan of manostat U1 is tapped into two-way path: the 4th resistance R4 of wherein leading up to accesses excitation switch Q2, and the 3rd resistance R3 of separately leading up to accesses the further ground connection GND of LED D80, described LED D80 and arranges.Low current I can be set by the device property of the 3rd resistance R3 and LED D801, and by clamp voltage VCC after the blood pressure lowering of LED light source array 30, the input current of its correspondence is I2, therefore, the static working current I of LED light source array 300=I1+I2, in the above-described embodiments, the relatively low Brightness Duty state of LED light source array 30 can be low light emission rate state, it is also possible to is OFF state, but wherein yet suffers from electric current.In a preferred example, this static working current I of Indirect method can be carried out by adjustment the 3rd resistance R30。
And after sensor 10 receives outside sources, pin OUT will produce driving voltage, corresponding to excitation switch Q2 and R4, manostat U1 is triggered, feedback excitation electric current I on the path of LED light source array 303, thus, after switching light emission rate state, the operating current I of LED light source array 30OUT=I1+I2+I3, LED light source array 30 will be lit or brighter.In a preferred example, Indirect method operating current I can be carried out by adjustment the 4th resistance R4OUT。
Further, in step 2 above, if sensor 10 does not sense outside sources again in a Preset Time, or when entering holding state according to described Preset Time, pin OUT will export pick-off signal to excitation switch Q1, so, and the exciting current I that manostat U1 triggers3To disappear, LED light source array 30 returns back to low light emission rate or OFF state again.
In another embodiment, it is achieved the brightness switching device of the LED lamp of said method is by consisting of: for sensing outside sources to trigger the sensor 10 of described brightness switching；For the LED light source array 30 illuminated；And the load control circuit being electrically connected between described sensor 10 and LED light source array 30, this load control circuit is configured to: receive the pumping signal of sensor 10 electrically connected with this load control circuit, and promotes the operating current of described LED lamp to carry out brightness switching.
Application on radar fluorescent tube
Referring again to Fig. 1, an example of this brightness switching device can be radar fluorescent tube or LED radar fluorescent tube, and radar fluorescent tube is provided with radar sensor, can sense outside sources by means of electromagnetic waves.The present embodiment can be applicable to the places such as (such as) underground garage.Generally using under environment, light fixture works long hours at low power state, switches to the state that total power is lighted when sensing mobile object, and can delay-action.
Inventor studies and obtains the principal performance of radar fluorescent tube, and make improvement: low power LED light source array can be carried out when holding state and light, power, between 3 to 5W, carries out flat-out LED light source array and lights when sensing mobile object, and power is between 12 to 15W.Therefore, the load of load control circuit switching LED light source array 30 can being passed through, lighting thus realizing total power.
As it is shown in figure 1, improve as a kind of, load control circuit is made up of manostat U1, stabilized switch Q1, excitation switch Q2, the 3rd resistance R3, the 4th resistance R4 and diode D80.Wherein, stabilized switch Q1 and excitation switch Q2 can be selected for MOS switch or the realization of other SPGAs.Stabilized switch Q1 is connected in the power path of LED light source array 30, is tapped into again the feeder ear VCC of manostat U1 input and sensor 10.In an example, the essential electrical assembly of this load control circuit is manostat U1, it can adopt (such as) low pressure difference linear voltage regulator (LDO) or similar linear voltage stabilization device/chip, its outfan is tapped into two-way path: the 4th resistance R4 of wherein leading up to accesses excitation switch Q2, the 3rd resistance R3 of separately leading up to accesses the further ground connection GND of LED D80, described LED D80 and arranges.The triggering pin OUT of sensor 10 accesses described excitation switch Q2 with input signal.
Wherein, described LED light source array 30 is configured to: to the alternating voltage blood pressure lowering from the alternating current line of force, and by supplying the sensor 10 running voltage VCC after described load control circuit voltage stabilizing.
Further, described LED light source array 30 is electrically connected to booster circuit 20 further, and this booster circuit 20 is configured to: boosted by the alternating voltage from the described alternating current line of force, and the arrangement to be satisfied with described LED light source array is arranged.
Wherein, LED light source array 30 is to have concatenated multiple LED (or light-emitting particles) with cascade, such as totally 79 LED D1, ..., D79, if can meet when electric current is certain with the array of source of cascade realization, each LED is impartial current limliting step by step, thus input is controlled to (such as)+12V to the DC voltage on stabilized switch Q1, meet the running voltage starting sensor 10.
And for the LED of more arrangements, numerical value restriction due to the DC voltage V+ of input, then according to the requirement starting voltage, this DC voltage V+ can be boosted or blood pressure lowering, for instance during for 200 LED, can adopt and the DC voltage V+ of 200V is boosted to 330V.Therefore can install a booster circuit 20, DC voltage V+ is boosted, can also be reduction voltage circuit or linear DC translation circuit, isolated variable circuit etc. in other examples.
Improve as another kind, between described load control circuit and sensor, be provided with the stabilized switch Q1 being connected to above-mentioned LED light source array outfan, be configured to the operating current of switching LED light source array.This stabilized switch Q1 can be individually designed independent of above-mentioned load control circuit, it is possible to use the brightness switching switch of normal radar fluorescent tube.
In this improvement, load control circuit is made up of manostat U1, excitation switch Q2, the 3rd resistance R3, the 4th resistance R4 and diode D80.Stabilized switch Q1 is connected in the power path of LED light source array 30, is tapped into again the feeder ear VCC of manostat U1 input and sensor 10.
In an example, the essential electrical assembly of this load control circuit is manostat U1, its outfan is tapped into two-way path: the 4th resistance R4 of wherein leading up to accesses excitation switch Q2, the 3rd resistance R3 of separately leading up to accesses the further ground connection GND of LED D80, described LED D80 and arranges.The triggering pin OUT of sensor 10 accesses described excitation switch Q2 with input signal.In this example, manostat U1 is as the load to LED light source array 30, for instance the switching control assembly of the 3rd resistance R3, the 4th resistance R4 or each LED internal resistance above-mentioned.
In the above-described embodiments, LED D80 can be selected for each the LED D1 with LED light source array 30 ..., the components and parts of D79 same size, it is possible to use other diode components.
Further, described stabilized switch Q1 is electrically connected to again manostat U1, wherein one end of this manostat U1 is provided with an excitation switch Q2 being electrically connected to the sensor outfan, described manostat U1 is configured to: turn on the conducting state to change described stabilized switch Q1 by described excitation switch Q2 according to pumping signal so that promote the operating current of described LED lamp.
Wherein, first according under radar fluorescent tube small-power illuminating state (3 to 5W power), the static working current of LED light source array 30 should be set, to determine the relatively low Brightness Duty state of this LED light source array 30.According to above-described embodiment, the outfan of manostat U1 is tapped into two-way path: the 4th resistance R4 of wherein leading up to accesses excitation switch Q2, and the 3rd resistance R3 of separately leading up to accesses the further ground connection GND of LED D80, described LED D80 and arranges.Low current I can be set by the device property of the 3rd resistance R3 and LED D801, and by clamp voltage VCC after the blood pressure lowering of LED light source array 30, the input current of its correspondence is I2, therefore, the static working current I of LED light source array 300=I1+I2, in the above-described embodiments, the relatively low Brightness Duty state of LED light source array 30 can be low light emission rate state, it is also possible to is OFF state, but wherein yet suffers from electric current.In a preferred example, this static working current I of Indirect method can be carried out by adjustment the 3rd resistance R30。
And after sensor 10 receives outside sources, pin OUT will produce driving voltage, corresponding to excitation switch Q2 and R4, manostat U1 is triggered, feedback excitation electric current I on the path of LED light source array 303, thus, after switching light emission rate state, the operating current I of LED light source array 30OUT=I1+I2+I3, LED light source array 30 will be lighted (12 to 15W) or brighter by total power.In a preferred example, Indirect method operating current I can be carried out by adjustment the 4th resistance R4OUT。
If sensor 10 does not sense outside sources again in a Preset Time, or when entering holding state according to described Preset Time, pin OUT will export pick-off signal to excitation switch Q1, so, and the exciting current I that manostat U1 triggers3To disappear, LED light source array 30 returns back to low light emission rate or OFF state again.
Wherein, described stabilized switch Q1 and excitation switch Q2 is installed on LED particle substrate in paster mode, to realize effective heat radiation.It is preferred that this brightness switching device can be encapsulated on a monolayer surface-mounted integrated circuit, pluggable mode electric property coupling in addition between itself and LED light source, can be adopted.
Claims (12)
1. the brightness switching device of a LED lamp, it is characterised in that be by consisting of:
For sensing outside sources to trigger the sensor of described brightness switching；
For the LED light source array illuminated；With
It is electrically connected to the load control circuit between described sensor and LED light source array, is configured to: receive the pumping signal of sensor electrically connected with this load control circuit, and promote the operating current of described LED lamp to carry out brightness switching.
2. the brightness switching device of LED lamp according to claim 1, it is characterized in that, described load control circuit is made up of manostat, stabilized switch, excitation switch, the 3rd resistance, the 4th resistance and diode, wherein said stabilized switch is connected to LED light source array, is tapped into again the feeder ear of described manostat input and sensor.
3. the brightness switching device of LED lamp according to claim 2, it is characterised in that the manostat of this load control circuit adopts low pressure difference linear voltage regulator.
4. the brightness switching device of the LED lamp according to Claims 2 or 3, it is characterized in that, the outfan of described manostat is tapped into two-way path: the 4th resistance of wherein leading up to accesses described excitation switch, the 3rd resistance of separately leading up to accesses a LED, the further ground connection of described LED is arranged, and the triggering pin of wherein said sensor accesses described excitation switch with input signal.
5. the brightness switching device of LED lamp according to claim 2, it is characterised in that described stabilized switch and excitation switch select MOS switch to realize.
6. the brightness switching device of LED lamp according to claim 5, it is characterised in that described stabilized switch and excitation switch are to be installed on LED particle substrate in paster mode, to realize effective heat radiation.
7. the brightness switching device of LED lamp according to claim 1, it is characterised in that be provided with the stabilized switch being connected to above-mentioned LED light source array outfan between described load control circuit and sensor, is configured to the operating current of switching LED light source array.
8. the brightness switching device of LED lamp according to claim 7, it is characterized in that, described load control circuit is made up of manostat, excitation switch, the 3rd resistance, the 4th resistance and diode, described stabilized switch is connected in the power path of LED light source array, is tapped into again the feeder ear of manostat input and sensor.
9. the brightness switching device of LED lamp according to claim 8, it is characterized in that, the outfan of described manostat is tapped into two-way path: the 4th resistance of wherein leading up to accesses described excitation switch, the 3rd resistance of separately leading up to accesses a LED, the further ground connection of described LED is arranged, and the triggering pin of wherein said sensor accesses described excitation switch with input signal.
10. the brightness switching device of LED lamp according to claim 1, it is characterised in that described LED light source array is configured to the alternating voltage blood pressure lowering from the alternating current line of force, and by supplying the sensor running voltage after described load control circuit voltage stabilizing.
11. the brightness switching device of LED lamp according to claim 10, it is characterized in that, described LED light source array is electrically connected to booster circuit further, this booster circuit is configured to be boosted the alternating voltage from the described alternating current line of force, and the arrangement to be satisfied with described LED light source array is arranged.
12. the brightness switching device of the LED lamp according to claim 10 or 11, it is characterised in that described LED light source array is parallel with the shunt regulator circuit for stablizing this LED light source array both end voltage.
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| CN201521118675.2U CN205356767U (en) | 2015-12-30 | 2015-12-30 | Luminance auto -change over device of LED lamps and lanterns |
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| CN201521118675.2U CN205356767U (en) | 2015-12-30 | 2015-12-30 | Luminance auto -change over device of LED lamps and lanterns |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105517241A (en) * | 2015-12-30 | 2016-04-20 | 杭州鸿雁电器有限公司 | Method for switching brightness of LED lamp and LED lamp brightness switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105517241A (en) * | 2015-12-30 | 2016-04-20 | 杭州鸿雁电器有限公司 | Method for switching brightness of LED lamp and LED lamp brightness switching device |
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